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1

Standard Products

 

UT63M1XX MIL-STD-1553A/B Bus Transceiver 

Data Sheet

      Sept. 1999

FEATURES

q Full conformance to MIL-STD-1553A and 1553B

q Completely monolithic bipolar technology

q Low power consumption

q Fit and functionally compatible to industry standard 631XX 

series

q Idle low encoding version

q Flexible power supply voltages: V

CC

=+5V, V

EE

=-12V or      -

15V, and V

CCA

=+5V to +12V or +5V to +15V

q Full military operating temperature range, -55

°

C to +125

°

C, 

screened to QML Q or QML V requirements

q Standard Military Drawing available

INTRODUCTION

The monolithic UT63M1XX Transceivers are complete 

transmitter and receiver pairs conforming fully to MIL-STD-

1553A and 1553B. Encoder and decoder interfaces are idle low. 

UTMC’s advanced bipolar technology allows the positive 

analog power to range from +5V to +12V or +5V to +15V, 

providing more flexibility in system power supply design. 

The receiver section of the UT63M1XX series accepts biphase-

modulated Manchester II bipolar data from a MIL-STD-1553 

data bus and produces TTL-level signal data at its RXOUT and 

RXOUT outputs. An external RXEN input enables or disables 

the receiver outputs. 

TXIN

RXOUT

RXEN

FROM ENCODER

TO DECODER

DRIVERS

COMPARE

FILTER

LIMITER

and

FILTER

TXIHB

Figure 1. Functional Block Diagram

RXIN

TXOUT

RXIN

TXOUT

RXOUT

TXIN

THRESHOLD

REFERENCE

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 2

   

Legend for TYPE field:

TI = TTL input

TO = TTL output

DO = Differential output 

DI = Differential input

() = Channel designator

TRANSMITTER

NAME

PACKAGE   PIN

TYPE

DESCRIPTION

SINGLE

DUAL

TXOUT

(A)

1

1

DO

Transmitter outputs: TXOUT and TXOUT are differential data signals.

TXOUT

(B)

N/A

10

DO

TXOUT

(A)

2

2

DO

TXOUT is the complement of TXOUT.

TXOUT

 (B)

N/A

11

DO

TXIHB

(A)

21

34

TI

Transmitter inhibit: this is an active high input signal.

TXINB

(B)

N/A

25

TI

TXIN

(A)

22

35

TI

Transmitter inputs: TXIN and  TXIN are complementary TTL-level

Manchester II encoder inputs.

TXIN

(B)

N/A

26

TI

TXIN

(A)

23

36

TI

TXIN is the complement of TXIN input.

TXIN

(B)

N/A

27

TI

The transmitter section accepts biphase TTL-level signal data 

at its TXIN and TXIN and produces MIL-STD-1553 data 

signals. The transmitter’s output voltage is typically 42V

PP

,   L-

L. Activating the TXIHB input or setting both data inputs to 

the same logic level disables the transmitter. 

The UT63M1XX series offers a monolithic transmitter and 

receiver packaged in either single channel (24-pin) or dual-

channel (36-pin) configurations designed for use in any MIL-

STD-1553 application.

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3

RECEIVER

NAME

PACKAGE   PIN

TYPE

DESCRIPTION

SINGLE

DUAL

RXOUT

(A)

7

5

TO

Receiver outputs: RXOUT and RXOUT are complementary 

Manchester II decoder outputs.

RXOUT

(B)

N/A

14

TO

RXOUT

(A)

10

8

TO

RXOUT is the complement of RXOUT output

RXOUT

(B)

N/A

17

TO

RXEN

(A)

8

6

TI

Receiver enable/disable: This is an active high input signal.

RXEN

(B)

N/A

15

TI

RXIN

(A)

15

29

DI

Receiver inputs: RXIN and RXIN are biphase-modulated Manchester 

II bipolar inputs from MIL-STD-1553 data bus.

RXIN

(B)

N/A

20

DI

RXIN

(A)

16

30

DI

RXIN is the complement of RXIN input.

RXIN

(B)

N/A

21

DI

POWER AND GROUND

NAME

PACKAGE   PIN

TYPE

DESCRIPTION

SINGLE

DUAL

V

CC

(A)

20

33

PWR

+5V

DC

 power (

±

10%)

V

CC

(B)

N/A

24

PWR

V

CCA

(A)

13

28

PWR

+5 to +12V

DC

 power or

+5 to +15V

DC 

power (

± 

5%)

V

CCA

(B)

N/A

19

PWR

V

EE

(A)

19

32

PWR

-12 or -15V

DC

 power (

± 

5%)

Recommended de-coupling capacitors 4.7

µ

F and.1

µ

F

V

EE

(B)

N/A

23

PWR

GND

(A)

3, 9, 18

3, 7, 31

GND

Ground reference

GND

(B)

N/A

12, 16, 22

GND

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 4

RXEN

RXOUT

TXOUT

RXIN

TXIN

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

NC

NC

GND

NC

NC

NC

GND

NC

NC

GND

NC

CHANNEL

Figure 2a. Functional Pin Diagram--Single Channel

TXIHB

TXOUT

RXOUT

TXIN

RXIN

V

CCA

V

CC

V

EE

         A

RXIN

TXIN

RXIN

TXIN

TXOUT

RXOUT

RXOUT

RXEN

RXEN

TXOUT

36

26

10

11

13

14

15

17

18

16

27

28

CHANNEL

35

34

33

32

31

30

29

26

25

24

23

22

B

21

20

19

CHANNEL

1

2

3

4

5

A

6

7

8

9

12

GND

GND

GND

NC

GND

NC

GND

NC

GND

NC

TXIHB

TXIHB

Figure 2b. Functional Pin Diagram--Dual Channel

TXOUT

RXOUT

TXIN

RXIN

TXOUT

RXIN

TXIN

RXOUT

V

CCA

V

CCA

V

CC

V

EE

V

CC

V

EE

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5

TRANSMITTER

The transmitter section accepts Manchester II biphase TTL data 

and converts this data into differential phase-modulated current 

drive. Transmitter current drivers are coupled to a MIL-STD-

1553 data bus via a transformer driven from the TXOUT and 

TXOUT terminals. Transmitter output terminals’ non-

transmitting state is enabled by asserting TXIHB (logic 1), or 

by placing both TXIN and TXIN at the same logic level. Table 

1, Transmit Operating Mode, lists the functions for the output 

data in reference to the state of TXIHB. Figure 3 shows typical 

transmitter waveforms.

RECEIVER

The receiver section accepts biphase differential data from a 

MIL-STD-1553 data bus at its RXIN and RXIN inputs. The 

receiver converts input data to biphase Manchester II TTL 

format and is available for decoding at the RXOUT and RXOUT 

terminals. The outputs RXOUT and RXOUT represent positive 

and negative excursions (respectively) of the inputs RXIN and 

RXIN. Figure 4 shows typical receiver output waveforms.

Models UT63M105, UT63M107, UT63M125, and UT63M127 

idle in the “0” state when disabled or receiving no signal. 

POWER SUPPLY VOLTAGES

The UT63M1XX series meets device requirements over a wide 

range of power supply voltages. Table 2 shows the overall 

capabilities of all available devices. Each channel of the dual 

transceiver is electrically and physically separate from the other 

and fully independent, including all power and signal lines. Thus 

there will be no interaction between the channels.

Notes:

1. x = Don’t care.

2. Transmitter output terminals are in the non-transmitting mode during Off 

time.

3. Transmitter output terminals are in the non-transmitting mode during Off 

time, independent of TXIHB status.

Table 1. Transmit Operating Mode

TXIN

TXIN

TXIHB

TXOUT

x

1

x

1

Off 

2

0

0

x

Off 

3

0

1

0

On

1

0

0

On

1

1

x

Off 

3

TXIN

Figure 3. Typical Transmitter Waveforms

TXIN

t

TXDD

90%

10%

TXOUT, TXOUT 

TXIN  

LINE-TO-LINE

DIFFERENTIAL 

OUTPUT

TXIN

TXIHB

BOTH HIGH

       OR

BOTH LOW

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 6

DATA BUS INTERFACE

The designer can connect the UT63M1XX to the data bus via a 

short-stub (direct-coupling) connection or a long-stub 

(transformer-coupling) connection. Use a short-stub connection 

when the distance from the isolation transformer to the data bus 

does not exceed a one-foot maximum. Use a long-stub 

connection when the distance from the isolation transformer 

exceeds the one-foot maximum and is less than twenty-five feet. 

Figure 5 shows various examples of bus coupling 

configurations. The UT63M1XX series transceivers are 

designed to function with MIL-STD-1553A and 1553B 

compatible transformers. 

RECOMMENDED THERMAL PROTECTION

All packages, single and dual, should mount to or contact a heat 

removal rail located in the printed circuit board. To insure proper 

heat transfer between the package and the heat removal rail, use 

a thermally conductive material between the package and the 

heat removal rail. Use a material such as Mereco XLN-589 or 

equivalent to insure heat transfer between the package and heat 

removal rail.

Figure 4. Typical Receiver Waveforms

QUIESCENT IDLE LOW 

RXOUT

RXOUT

LINE-TO-LINE

DIFFERENTIAL

INPUT

RXOUT

RXOUT

t

RXDD

Table 2. Transceiver Model Capabilities

MODEL

V

CC

V

EE

V

CCA

IDLE

UT63M105

+5V

-15V

+5 to +15V

Low

UT63M107

+5V

-12V

+5 to +12V

Low

UT63M125

+5V

-15V

+5 to +15V

Low

UT63M127

+5V

-12V

+5 to +12V

Low

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 7

20 FT MAX

Figure 5. Bus Coupling Configuration

OPERATION

55 OHMS

55 OHMS

1 FT MAX

SHORT-STUB

DIRECT COUPLING

LONG-STUB

TRANSFORMER COUPLING

1:1.4

OPERATION

55 OHMS

55 OHMS

1 FT MAX

20 FT MAX

SHORT-STUB

DIRECT COUPLING

LONG-STUB

TRANSFORMER COUPLING

1.4:1

2:1

1:1.4

1.2:1

1.66:1

Note:

Z

O

 defined per MIL-STD-1553B in section 4.5.1.5.2.1.

± 

15V

DC

± 

12V

DC

Z

O

.75Z

O

.75Z

O

Z

O

.75Z

O

.75Z

O

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 8

V

IN

R

L

 =

55 OHMS

55 OHMS

35 OHMS

A

2K OHMS

2K OHMS

RECEIVER

TRANSMITTER

TP

TP

*

1:1.4

1.4:1

RXIN

RXEN

TXIN

TXOUT

RXOUT

TXIHB

55 OHMS

55 OHMS

35 OHMS

Notes:

1.  TP = Test point.

2.  R

L

 removed for terminal input impedance test.

3.  TX and RX tied together.

RXIN

TXIN

TXOUT

15pF

15pF

V

CC

RXOUT

Figure 6. Direct-Coupled Transceiver with Load

V

IN

Figure 7. Transformer-Coupled Transceiver with Load

1:1.4

2K OHMS

2K OHMS

RECEIVER

TP

TP

TRANSMITTER

55 OHMS

55 OHMS

35 OHMS

A

TXIHB

TXIN

RXEN

TXOUT

N:L

L:N

1.4:1

RXIN

RXOUT

*

Notes: 

1.  TP = Test point. 

2.  N:L Ratio is dependent on power supply voltage.

3.  R

L

 removed for terminal input impedance test.

4.  TX and RX tied together.

RXIN

TXIN

TXOUT

RXOUT

15pF

15pF

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 9

ABSOLUTE MAXIMUM RATINGS

1

(Referenced to V

SS

)

RECOMMENDED OPERATING CONDITIONS

SYMBOL

PARAMETER

LIMITS

UNIT

V

CC

Supply Voltage

7.0

V

V

EE

Supply Voltage

-22

V

V

CCA

Supply Voltage

+22

V

V

IN

Input Voltage Range (Receiver)

42

V

PP

, L-L

V

IN

Logic Input Voltage

-0.3 to +5.5

V

I

O

Output Current (Transmitter)

190

mA

P

D

Power Dissipation (per Channel)

4

W

Q

JC

Thermal Impedance, Junction-to-Case

6

2

°

C/W

T

J

Operating Temperature, Junction

-55 to +150

°

C

T

C

Operating Temperature, Case

-55 to +125

°

C

T

STG

Storage Temperature

-65 to +150

°

C

Notes:

1. Stress outside the listed absolute maximum rating may cause permanent damage to the devices. This is a stress rating only, and functional operation of the  

device at these or any other conditions beyond limits indicated in the operational sections of this specification is not recommended. Exposure to absolute 

maximum rating conditions for extended periods may affect device reliability.

2. Mounting per MIL-STD-883, Method 1012.

PARAMETER

LIMITS

UNIT

Logic input voltage range

0 to +5.0

V

Receiver differential voltage

9.0

V

P-P

Driver peak output current

180

mA

Serial data rate

0.1 to 1

MHz

Case operating temperature range (T

C

)

-55 to +125

°

C

A

TERMINAL

TXOUT

Figure 8. Transceiver Test Circuit MIL-STD-1553B

Notes:

Transformer-Coupled Stub:

Terminal is defined as transceiver plus isolation transformer. Point A defined in figure 7.

Direct-Coupled Stub:

Terminal is defined as transceiver plus isolation transformer and fault resistors. Point A defined in figure 6.

TXOUT

R

L

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 10

DC ELECTRICAL CHARACTERISTICS

V

CC

 = +5V (

± 

10%)

V

CCA

 = +5V to + 12V (

± 

5%) or +5V to +15V (

± 

5%)

V

EE

 = -12V or -15V (

±

 5%)

-55

°

C < T

C

 < +125

°

C

SYMBOL

PARAMETER

MINIMUM

MAXIMUM

UNIT

CONDITION

V

IL

Input Low Voltage

0.8

V

RXEN, TXIHB, TXIN, TXIN

V

IH

Input High Voltage

2.0

V

RXEN, TXIHB, TXIN, TXIN

I

IL

Input Low Current

-1.6

mA

V

IL

 = 0.4V; RXEN, TXIHB, TXIN, 

TXIN

I

IH

Input High Current

40

µ

A

V

IL

 = 2.4V; RXEN, TXIHB, TXIN, 

TXIN

V

OL

Output Low Voltage

0.55

V

I

OL 

= 4.0 mA; RXOUT, RXOUT

V

OH

Output High Voltage

2.4

V

I

OH 

= 0.4 mA; RXOUT, RXOUT

I

CC

V

CC

 Supply Current

60

60

60

60

60

60

mA

mA

mA

mA

mA

mA

V

EE

 = -12V V

CC

 = 5V 

V

CCA

 = +5V to +12V

0% duty cycle (non-transmitting)

50% duty cycle (

ƒ

 = 1MHz)

100% duty cycle (

ƒ

 = 1MHz)

V

EE

 = -15V V

CC

 = 5V

V

CCA

 = +5V to +15V

0% duty cycle (non-transmitting)

50% duty cycle (

ƒ

 = 1MHz)

100% duty cycle (

ƒ 

= 1MHz)

I

CCA

V

CCA

 Supply Current

10

10

10

10

10

10

mA

mA

mA

mA

mA

mA

V

EE

 = -12V V

CC

 = 5V 

V

CCA

 = +5V to +12V

0% duty cycle (non-transmitting)

50% duty cycle (

ƒ

 = 1MHz)

100% duty cycle (

ƒ

 = 1MHz)

V

EE

 = -15V V

CC

 = 5V

V

CCA

 = +5V to +15V

0% duty cycle (non-transmitting)

50% duty cycle (

ƒ

 = 1MHz)

100% duty cycle (

ƒ

 = 1MHz)

I

EE

V

EE

 Supply Current

40

140

230

40

130

230

mA

mA

mA

mA

mA

mA

V

EE

 = -12V V

CC

 = 5V 

V

CCA

 = +5V to +12V

0% duty cycle (non-transmitting)

50% duty cycle (

ƒ

 = 1MHz)

100% duty cycle (

ƒ

 = 1MHz)

V

EE

 = -15V V

CC

 = 5V

V

CCA

 = +5V to +15V

0% duty cycle (non-transmitting)

50% duty cycle (

ƒ

 = 1MHz)

100% duty cycle (

ƒ

 = 1MHz)

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 11

P

CD

Power Dissipation

0.9

2.1

3.3

1.0

2.5

3.8

W

W

W

W

W

W

V

EE

 = -12V V

CC

 = 5V 

V

CCA

 = +5V to +12V

0% duty cycle (non-transmitting)

50% duty cycle (

ƒ

 = 1MHz)

100% duty cycle (

ƒ

 = 1MHz)

V

EE

 = -15V V

CC

 = 5V

V

CCA

 = +5V to +15V

0% duty cycle (non-transmitting)

50% duty cycle (

ƒ

 = 1MHz)

100% duty cycle (

ƒ

 = 1MHz)

Notes:

1. All tests guaranteed per test figure 6.

2. As specified in test conditions.

DC ELECTRICAL CHARACTERISTICS

V

CC

 = +5V (

± 

10%)

V

CCA

 = +5V to + 12V (

± 

5%) or +5V to +15V (

± 

5%)

V

EE

 = -12V or -15V (

±

 5%)

-55

°

C < T

C

 < +125

°

C

SYMBOL

PARAMETER

MINIMUM

MAXIMUM

UNIT

CONDITION

1

2

2

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 12

RECEIVER ELECTRICAL CHARACTERISTICS

 

1

V

CC

 = +5V (

± 

10%)

V

CCA

 = +5V to + 12V (

± 

5%) or +5V to +15V (

± 

5%)

V

EE

 = -12V or -15V (

±

 5%)

-55

°

C < T

C

 < +125

°

C

SYMBOL

PARAMETER

MINIMUM

MAXIMUM

UNIT

CONDITION

R

IZ

2

Differential (Receiver)

Input Impedance

15

K Ohms

Input 

ƒ

 = 1MHz (no transformer 

in circuit)

C

IN

2

Input Capacitance

10

pF

RXEN; input 

ƒ

 = 1MHz @ 0V

V

IC

2

Common Mode Input Volt-

age

-10

+10

V

Direct-coupled stub: input 

1.2V

PP,

 200ns rise/fall time 

± 

25ns, 

ƒ

 = 1MHz.

V

TH

Input Threshold Voltage 

(No Response)

2

Input Threshold Voltage 

(No Response)

Input Threshold Voltage 

(Response)

2

Input Threshold Voltage 

(Response)

0.86

1.20

0.20

0.28

14.0

20.0

2

V

PP,

L-L

V

PP,

L-L

V

PP,

L-L

V

PP,

L-L

Transformer-coupled stub: input 

at 

ƒ

 = 1MHz, rise/fall time 200ns 

at (Receiver output 0 

 1 

transition).

Direct-coupled stub: input at 

ƒ

 = 

1MHz, rise/fall time 200ns at 

(Receiver output 0 

 1 

transition).

Transformer-coupled stub: input 

at 

ƒ

 = 1MHz, rise/fall time 200ns 

output at (Receiver output 0 

 1 

transition).

Direct-coupled stub: input at 

ƒ

 = 

1MHz, rise/fall time 200ns output 

at (Receiver output 0 

 1 

transition).

CMMR

2

Common Mode Rejection 

Ratio

Pass/Fail

3

N/A

Notes:

1. All tests guaranteed per test figure 6.

2. Guaranteed by device characterization.

3. Pass/fail criteria per the test method described in MIL-HDBK-1553 Appendix A, RT Validation Test Plan, Section 5.1.2.2, Common Mode Rejection.

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 13

TRANSMITTER ELECTRICAL CHARACTERISTICS

1

V

CC

 = +5V (

± 

10%)

V

CCA

 = +5V to + 12V (

± 

5%) or +5V to +15V (

± 

5%)

V

EE

 = -12V or -15V (

±

 5%)

-55

°

C < T

C

 < +125

°

SYMBOL

PARAMETER

MINIMUM

MAXIMUM

UNIT

CONITION

V

O

Output Voltage Swing per 

MIL-STD-1553B 

2

          

(See figure 9)

per MIL-STD-1553B     

(See figure 9)

per MIL-STD-1553A 

2

 

(See figure 9)

18

6

6

27

9

20

V

PP, 

L-L

V

PP, 

L-L

V

PP, 

L-L

Transformer-coupled stub, Figure 

8, Point A: input 

ƒ

 = 1MHz,           

R

L

 = 70 ohms.

Direct-coupled stub, Figure 8, 

Point A: input 

ƒ

 = 1MHz,                

R

L

 = 35 ohms.

Figure 7, Point A:

input 

ƒ

 = 1MHz, R

L

 = 35 ohms.

V

NS  

2

Output Noise

Voltage Differential

(See figure 9)

14

5

mV-RMS, 

L-L

mV-RMS, 

L-L

Transformer-coupled stub, Figure 

8, Point A: input 

ƒ

 = DC to 10MHz, 

R

L

 = 70 ohms.

Direct-coupled stub, Figure 8, 

Point A: input 

ƒ

 = DC to 10MHz, 

R

L

 = 35 ohms.

Output Symmetry             

(See figure 9)

-250

-90

+250

+90

mV

PP

, L-L

mV

PP

, L-L

Transformer-coupled stub, Figure 

8, Point A: R

L

 = 70 ohms, measure-

ment taken 2.5

µ

s after end of trans-

mission

Direct-coupled stub, Figure 8, 

Point A: R

L

 = 35 ohms, measure-

ment taken 2.5

µ

s after end of trans-

mission

Output voltage distortion 

(overshoot or ring)        

 (See figure 9)

-900

-300

+900

+300

mV peak, 

L-L

mV peak, 

L-L

Transformer-coupled stub, Figure 

8, Point A: R

L

 = 70 ohms.

Direct-coupled stub, Figure 8, 

Point A: R

L

 = 35 ohms.

C

IN

  

2

Input Capacitance

10

pF

TXIHB, TXIN, TXIN; input              

ƒ

 = 1MHz @ 0 V

Terminal Input Impedance

1

2

Kohm

Kohm

Transformer-coupled stub, Figure 

7, Point A: input 

ƒ

 = 75KHz to 

1MHz (power on or power off: non-

transmitting, R

L

 removed from 

circuit).

Direct-coupled stub, Figure 6, 

Point A: input 

ƒ

 = 75KHz to 1MHz 

(power on or power off: non-trans-

mitting, R

L

 removed from circuit).

Notes:

1. All tests guaranteed per test figure 6.

2. Guaranteed by device characterization.

V

OS  

2

T

IZ 

2

V

DIS  

2

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 14

AC ELECTRICAL CHARACTERISTICS

 

1

V

CC

 = +5V (

± 

10%)

V

CCA

 = +5V to + 12V (

± 

5%) or +5V to +15V (

± 

5%) 

V

EE

 = -12V or -15V (

±

 5%)

-55

°

C < T

C

 < +125

°

C

SYMBOL

PARAMETER

MINIMUM

MAXIMUM

UNIT

CONDITION

Transmitter Output 

Rise/Fall Time

(See figure 10)

100

300

ns

Input 

ƒ

 = 1MHz 50% duty cycle: 

direct-coupled R

L

 = 35 ohms output at 

10% through 90% points TXOUT, 

TXOUT. Figure 3.

t

RXDD

RXOUT Delay

-200

+200

ns

RXOUT to RXOUT; Figure 4.

t

TXDD 

 3

TXIN Skew

-25

+25

ns

TXIN to TXIN; Figure 4.

t

RZCD

Zero Crossing

-150

+150

ns

Direct-coupled stub; input 

ƒ

 = 1MHz, 

3V

PP

 (skew INPUT 

± 

150ns), rise/fall 

time 200ns.

t

TZCS

2

Zero Crossing 

Stability

(See figure 10)

-25

+25

ns

Input TXIN and TXIN should create 

transmitter output zero crossings at 

500ns, 1000ns, 1500ns, and 2000ns. 

These zero crossings should not devi-

ate more than 

± 

25ns.

t

DXOFF

3,4

Transmitter Off; 

Delay from Inhibit 

Active

400

ns

TXIN and TXIN toggling @ 1MHz; 

TXIHB transitions from logic zero to 

one.

t

DXON

3,5

Transmitter On; 

Delay from Inhibit 

Inactive

250

ns

TXIN and TXIN toggling @ 1MHz; 

TXIHB transitions from logic one to 

zero.

Notes:

1. All tests guaranteed per test figure 6.

2. Guaranteed by device characterization.

3. Supplied as a design limit but not guaranteed or tested.

4. Delay time from transmit inhibit (1.5V) to transmit off (280mV).

5. Delay time from not transmit inhibit (1.5V) to transmit on (1.2V).

Table 3. Transformer Requirements Versus Power Supplies

COUPLING TECHNIQUE

± 

12V

DC

± 

15V

DC

DIRECT-COUPLED:

Isolation Transformer Ratio

1.2:1

1.4:1

TRANSFORMER-COUPLED:

Isolation Transformer Ratio

1.66:1

2:1

Coupling Transformer Ratio

1:1.4

1:1.4

t

R

, t

F

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 15

Figure 10. Transmitter Output Zero Crossing Stability (t

TZCS

, t

R

, t

F

)

Figure 9. Transmitter Output Characteristics (V

DIS

, V

NS, 

V

O

)

V

DIS

(Overshoot)

(Ring)

V

DIS

t

R

t

F

Zero Crossing 

Stability 

± 

25ns

Figure 11. Receiver Input Zero Crossing Distortion (t

RZCD

)

Zero Crossing 

Distortion 

± 

150ns

0 Volts

V

O

V

O

V

IN

0 Volts

t

TZCS

t

RZCD

90%

10%

10%

90%

V

NS

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 16

Figure 12. 36-Pin Side-Brazed DIP, Dual Cavity

Notes:

1. Package material: opaque ceramic.

2. All package finishes are per MIL-PRF-38535.

3. It is recommended that package ceramic be mounted on a heat removal

    rail in the printed circuit board. A thermally conductive material should

    be used.

LEAD 1

INDICATOR

0.005 MIN.

.610 MAX.

.570 MIN.

.015 MAX.

.008 MIN.

.620 MAX

.590 MIN.

(AT SEATING PLANE)

1.89 MAX

0.001 MIN.

.023 MAX.

.014 MIN.

0.155

MAX.

0.150

MIN.

0.100

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 17

Notes:

1. All package finishes are per MIL-M-38510.

2. It is recommended that package ceramic be mounted on a heat removal

    rail in the printed circuit board. A thermally conductive material such as

    MERECO XLN-589 or equivalent should be used.

3.  Letter designations are for cross-reference to MIL-M-38510.

Figure 13. 24-Pin Side-Brazed DIP, Single Cavity

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 18

Notes:

1. All package finishes are per MIL-M-38510.

2. It is recommended that package ceramic be mounted on a heat removal

    rail in the printed circuit board. A thermally conductive material such as

    MERECO XLN-589 or equivalent should be used.

3. Letter designations are for cross-refernce to MIL-M-38510.

Figure 14. 36-Pin Lead Flatpack

(100-MIL Lead Spacing)

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 19

Figure 15. 36-Lead Flatpack, Dual Cavity

(50-Mil Lead Spacing)

Notes:

1. Package material: opaque ceramic.

2. All package plating finishes are per MIL-M-38510.

3. Lid is not connected to any electrical potential.

4. It is recommended that package ceramic be mounted to a heat removal rail located in the

    printed circuit board. A thermally conductive material such as Mereco XLN-589 or

    equivalent should be used.

1.00+.025

E

0.700

±

0.015

LEAD 1 INDICATOR

A

0.130 MAX.

0.070

±

0.010

(AT CERAMIC BODY)

D

-

e

.050 

b

0.016

±

.002

C

0.007

-0.001

+0.002

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 20

ORDERING INFORMATION

UT63M Single Channel MIL-STD-1553 Monolithic Transceiver: SM

Lead Finish:

(A) =    Solder 

(C) =

Gold

(X) =

Optional

Case Outline:

(U) =

24 pin DIP

Class Designator:

(-)

=

Bland or No field is QML Q

(Q) =

QML

Device Type

(01) =

+\-15V, idle low

(02) =

+\-12V, Idle low

Drawing Number: 88644

Total Dose: None

(R) =

1E5 (100KRad)

Federal Stock Class Designator: No options

5962      *      *      *      *     *      *

Notes:

1. Lead finish (A, C, or X) must be specified.

2. If an “X” is specified when ordering, part marking will match the lead finish and will be either “A” (solder) or “C” (gold).

3. RadHard offered only on 01 device type. Cobalt 60testing required.

4. For QML Q product, the Q designator is intentionally left blank in the SMD number (e.g. 5962-8864401UX).

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 21

UT63M Single Channel MIL-STD-1553 Monolithic Transceiver

Radiation:

5       =    1E5 rads(Si)

  -      =    None

Lead Finish:

(A) =

Solder 

(C)

=

Gold

(X) =

Optional

Screening:

(C)    =    Military Temperature

(P)

=

Prototype 

(Q)     =    QML-Q

(V)     =    QML-V

Package Type:

(P)

=

24-pin DIP

Device Type Modifier:

105     =      +\-15V, Idle low

107     =      +\- 12V, Idle Low 

UT63M     *     *       *     *      *      

Notes:

1. Lead finish (A, C, or X) must be specified.

2. If an “X” is specified when ordering, part marking will match the lead finish and will be either “A” (solder) or “C” (gold).

3. Military Temperature range devices are burned-in and are tested at -55

°

C, room temperature, and 125

°

C. Radiation characteristics are neither tested

    nor guaranteed and may not be specified. 

4. Devices have prototype assembly and are tested at 25

°

C only. Radiation characteristics are neither tested nor guaranteed and may not be specified. Lead

    finish is at UTMC’s option and an “X” must be specified when ordering.

5. The 63M105 only may be ordered with 1E5 rads(Si) total dose. Co60 testing is required. Contact factory for details.

6. SEU and neutron irradiation limits will be added when available.

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Appendix 1 - 22

ORDERING INFORMATION

UT63M Dual Monolithic Transceiver: SMD

Lead Finish:

(A) =    Solder 

(C) =

Gold

(X) =

Optional

Case Outline:

(X) =

36 pin DIP

(Y) =

36 pin FP (.100)

(Z ) =

36 pin FP (.50)

Class Designator:

(-)

=

Blank orNo field is QML Q

(V) =

QML V

Device Type

(05) =

+\-15V, idle low

(06) =

+\-12V, Idle low

Drawing Number: 88644

(-)

=

None

(R) =

1E5 (100Krad)

Federal Stock Class Designator: No options

5962      *      *      *      *     *

Notes:

1. Lead finish (A, C, or X) must be specified.

2. If an “X” is specified when ordering, part marking will match the lead finish and will be either “A” (solder) or “C” (gold).

3. RadHard offered only on 05 device type. Cobalt 60testing required.

4. For QML Q product, the Q designator is intentionally left blank in the SMD number (e.g. 5962-8864405YX).

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 23

UT63M Dual Multichip Monolithic Transceiver

Radiation:

None

Lead Finish:

(A) =

Solder 

(C)

=

Gold

(X) =

Optional

Screening:

(C)    =    Military Temperature

(P)

=

Prototype 

(Q)     =    QML-Q

(V)     =    QML-V

Package Type:

(B)

=

36-pin DIP

(D) =

36-pin FP (.100)

(C)

=

36-pin FP (.50)

Device Type Modifier:

125     =      +\-15V, Idle low

127     =     +\- 12V, Idle Low 

UT63M-    *     *     *     *      

Notes:

1. Lead finish (A, C, or X) must be specified.

2. If an “X” is specified when ordering, part marking will match the lead finish and will be either “A” (solder) or “C” (gold).

3. Military Temperature range devices are burned-in and tested at -55

°

C, room temperature, and 125

°

C. Radiation characteristics are neither tested nor

guaranteed and may not be specified. 

4. Devices have prototype assembly and are tested at 25

°

C only. Radiation characteristics are neither tested nor guaranteed and may not be specified. Lead

finish is GOLD only.