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CIRCUIT TECHNOLOGY

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EROFLEX CIRCUIT TECHNOLOGY - Data Bus Modules for the Future ©SCD4404 REV D 10/27/99

Features

• ARX4404 Transceiver meets MIL-STD-1553A & B, 

Macair A3818, A4905, A5232 and A5690 specs

• ARX4407 Transceiver meets MIL-STD-1553 specs

• Bipolar Supply ±15V to ±12V, Logic Supply +5V

• Direct replacement for CT3231 and CT3232

• Voltage source output for higher bus drive power 

• Plug-in, flat package or low profile flat package

• Monolithic construction using linear ASICs

• Variable receiver threshold capability 

• Low receiver data level versions, ARX4440, 4467

• Processed and screened to MIL-STD-883 specs 

• DESC SMD (Standard Military Drawing)

• MIL-PRF-38534 Compliant Devices Available

General Description

The Aeroflex Laboratories

transceiver models ARX4404 and

ARX4407 are new generation

monolithic transceivers which provide

full compliance with Macair and

MIL-STD-1553 data bus

requirements 

The model ARX4404 and model

ARX4407 perform the front-end

analog function of inputting and

outputting data through a transformer

to a MIL-STD-1553 or Macair data

bus. The ARX4404 can be

considered a "Universal" Transceiver

in that it is compatible with

MIL-STD-1553A, B, Macair A-3818,

A-4905, A-5232 and A-5690. The

ARX4407 is compatible with

MIL-STD-1553A and B.

Design of these transceivers

reflects particular attention to active

filter performance.This results in low

bit and word error rate with superior

waveform purity and minimal zero

crossover distortion. The ARX4404

series active filter design has

additional high frequency roll-off to

provide the required Macair low

harmonic distortion waveform without

increasing the pulse delay

characteristics significantly. 

Efficient transmitter electrical and

thermal design provides low internal

power dissipation and heat rise at

high and well as low duty cycles.

An optional receiver input threshold

adjustment can be accomplished by

the use of the "Set Internal

Threshold" terminals.

 Transmitter

The Transmitter section accepts

bi-phase TTL data at the input and

when coupled to the data bus with a

ARX4404FP/4404 Transceivers 

Block Diagram (without Transformer)

 

SHAPING

OUTPUT 

STAGE

COMP.

COMP.

ACTIVE

FILTER

INPUT

 AMP

DRIVER

TX  DATA  IN 

TX  DATA  IN

TX  INHIBIT

+5 V

RX DATA IN 

RX DATA IN 

STROBE

TX DATA OUT 

TX DATA  OUT 

RX DATA OUT

RX DATA OUT

-12V or -15V

EX THRESHOLD

DATA

SET INTERNAL

DATA

DATA

EX THRESHOLD 

DATA

+15V or +12V

V+

V-

 THRESHOLD

ARX4404 & 4407 Transceivers for

MACAIR  A3818, A5690, A5232, A4905

&  MIL-STD-1553

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Aeroflex Circuit Technology

SCD4404 REV D  10/27/99  Plainview NY (516) 694-6700

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1:1 transformer, isolated on the data

bus side with two 52.5 Ohm fault

isolation resistors, and loaded by

two 70 Ohm terminations plus

additional receivers, the data bus

signal produced is 7.0 Volts

minimum P-P at A-A’. (See

Figure 5.) When both DATA and

DATA inputs are held low or high, the

transmitter output becomes a high

impedance and is “removed” from

the line. In addition, an overriding

“INHIBIT" input provides for the

removal of the transmitter output

from the line. A logic “1” applied to

the “INHIBIT” takes priority over the

condition of the data inputs and

disables the transmitter. (See

Transmitter Logic Waveforms,

Figure 1.)

The transmitter utilizes an active

filter to suppress harmonics above

1 MHz to meet Macair specifications

A-3818, A-4905, A-5232 and

A-5690. The transmitter may be

safely operated for an indefinite

period at 100% duty cycle into a

data bus short circuit.

Receiver

The Receiver section accepts

bi-phase differential data at the input

and produces two TTL signals at the

output. The outputs are DATA and

DATA, and represent positive and

negative excursions of the input

beyond a pre-determined threshold.

(See Receiver Logic Waveforms,

Figure 2.) 

The internal threshold is nominally

set to detect data bus signals

exceeding 1.05 Volts P-P and

reject signals less than 0.6 Volts

P-P when used with a 1:1 turns

ratio transformer. (See Figure 5 for

transformer data and typical

connection.) This threshold setting

can be held by grounding the

appropriate pins or modified with

the use of external resistors.

A low level at the Strobe input

inhibits the DATA and DATA

outputs. If unused, a 2K Ohm

pull-up to +5 Volts is

recommended.

DATA IN 

DATA  IN

INHIBIT

LINE TO LINE 

OUTPUT

Notes:

2. DATA  and DATA  inputs must be complementary waveforms or 50% duty cycle average, with no delays between them.

3. DATA  and DATA  must be in the same state during off time (both high or low).

Figure 1 - Transmitter Logic Waveforms

Figure 2 - Receiver Logic Waveforms 

Note overlap

NOTE

:

 Waveforms shown are for normally low devices. For normally high receiver output 

devices, the receiver outputs are swapped as shown by the dashed lines

                   

level

LINE TO LINE 

     INPUT

DATA OUT

DATA OUT

1. Line to line waveforms illustrate Macair signals, MIL-STD-1553 signals are trapezoidal

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Absolute Maximum Ratings

Operating case temperature

-55°C to +125°C

Storage Case Temperature

-65°C to +150°C

Power Supply Voltages

±16 V

+7 V

Logic Input Voltage

-0.3 V to +5.5 V

Receiver Differential Input

±40 V

Receiver Input Voltage (Common Mode)

±10V

Driver Peak Output Current

300 mA

Total Package Power Dissipation over the Full 

Operating Case Temperature Range

3.6 Watts

Maximum Junction to Case Temperature

18°C

Junction-Case, Thermal Resistance

5°C/W 

Electrical Characteristics, Transmitter Section

   Input Characteristics, TX DATA IN or TX DATA IN 

Parameter

Condition

Symbol

Min

Typ

Max

Unit

"0" Input Current

V

IN

 = 0.4 V

I

ILD

-

-0.2

-0.4

mA

"1" Input Current

V

IN 

= 2.7 V

I

IHD

-

1.0

40

µA

"0" Input Voltage

V

IHD

-

-

0.7

V

"1" Input Voltage

V

IHD

2.0

-

-

V

Inhibit Characteristics

"0" Input Current

V

IN 

= 0.4 V

I

ILI

-

-0.2

-0.4

mA

"1" Input Current

V

IN 

= 2.7 V

I

IHI

-

1.0

40

µA

"0" Input Voltage

V

ILI

-

-

0.7

V

"1" Input Voltage

V

IHI

2

-

-

V

Delay from TX inhibit(0¡1) to inhibited output

Note 1

t

DXOFF

-

300

450

nS

Delay from TX inhibit, (1¡0) to active output

Note 1

t

DXON

-

300

450

nS

Differential output noise, inhibit mode

V

NOI

-

0.8

10

mVp-p

Differential output impedance (inhibited)

Note 2

Z

OI

2K

-

-

Output Characteristics

Differential output level

R

L

 = 35 

 

V

O

7

7.5

9

Vp-p

Rise and fall times

(10% to 90% of p-p output)

ARX4404

t

R

 & t

F

200

250

300

nS

ARX4407

100

180

300

Output offset at point A-A’ on Fig 5., 2.5 µS 

after midpoint crossing of the parity bit of the 

last word of a 660 µS message 

R

L

 = 35 

 

V

OS

±90

mVpeak

Delay from 50% point of TX DATA or 

TX DATA input to zero crossing of 

differential signal.  (Note 1)

ARX4404

t

DTX

240

300

nS

ARX4407

150

300

nS

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Aeroflex Circuit Technology

SCD4404 REV D  10/27/99  Plainview NY (516) 694-6700

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Electrical Characteristics, Receiver Section

Parameter

Condition

Symbol

Min

Typ

Max

Unit

Differential Input Impedance

f = 1MHz

Z

IN

20K

100K

Differential Input Voltage Range

V

IDR

-

-

40 

Vp-p

Input Common Mode Voltage Range

Note 1

V

ICR

10

-

-

Vp-p

Common Mode Rejection Ratio   Note 3

Note 1

CMRR

40

-

-

dB

Strobe Characteristics (Logic "0" Inhibits Output)

 

"0" Input Current

V

= 0.4 V

I

IL

-

-0.2

-0.4

mA

"1" Input Current

V

= 2.7 V

I

IH

-

-1.0

+40

µA

"0" Input Voltage

V

IL

-

-

0.7

V

"1" Input Voltage

V

IH

2.0

-

-

V

 Strobe Delay (Turn-on or Turn-off)

Note 1

t

SD

-

-

150

nS

Threshold Characteristics (Sinewave Input )

Internal Threshold Voltage 

(Referred to the bus) Pins 6 and 11 grounded 

100KHz-1MHz

V

TH

0.60

0.80

1.15

Vp-p

External Threshold

Pins 6 & 11 open,

Pin 5 with a 5.9K resistor to GND,

Pin 12 with a 6.65K resistor to GND,

1MHZ Sinewave applied to point A-A"

V

TH(EXT)

1.5

1.9

2.3

Vp-p

Output Characteristics, RX DATA and RX DATA

"1" State

I

OH 

= -0.4 mA

V

OH

2.5

3.6

-

V

"0" State

I

OL

 = 4 mA

V

OL

-

0.35

0.5

V

Delay (average), from differential input zero 

crossings to RX DATA and RX DATA output 

50% points

Note 1

t

DRX

-

300

450

nS

Power Data

    Power Supply Currents (Power Supplies set at +15V, -15V, +5V)

Transmitter Standby 

I

CC

I

EE

I

L

30

50

25

60

75

35

mA

 25% duty cycle 

I

CC

I

EE

I

L

50

70

25

85

105

35

50% duty cycle

I

CC

I

EE

I

L

75

45

25

110

130

35

100% duty cycle 

I

CC

I

EE

I

L

120

140

25

160

180

35

Recommended Power Supply Voltage Range

+V

+11.4 Volts to +15.75 Volts

-V

-11.4 Volts to -15.75 Volts

Logic

+4.5 Volts to +5.5 Volts

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5

Notes:

1. Characteristics guaranteed by design, not production tested.

2. Measured from 75KHz to 1MHz at point A-A’ with transformer self impedance of 3K

minimum, power on or off.

3. Specifications apply over the temperature range of -55°C to +125°C (case temperature)

unless otherwise noted.

4. All typical values are measured at +25°C

 

The information contained in this data sheet is believed to be accurate; however, Aeroflex Circuit Technology.

assumes no responsibility for its use, and no licence or rights are granted by implication or otherwise in connection

therewith.

Figure 3 - Transmitter (TX) Output Wave form

Figure 4 - Transmitter (TX) Output offset

Figure 5 - Typical Transformer connection

Figure 6 - Power Dissipation vs. Duty Cycle

0     10     20    30    40    50    60    70    80    90   100

4.0

3.5

3.0

2.5

  2.0

  1.5

  1.0

  0.5

      0

DUTY CYCLE, PERCENT

P

O

W

E

R

 D

IS

S

IP

A

T

IO

N

 

  

  

  

 W

A

T

T

S

6.5V P-P MIN

8.5V P-P MAX

90%

10%

t

r

*

t

f

*

* Rise and fall times measured at point A-A’ in Fig 5 

0 Volts

OUTPUT OFFSET

*

 

OUTPUT OFFSET

*

 

Last Bit

2.5 µsec

 *Offset measured at point A-A’ in Fig 5

N1:N2

A

A’

B’

B

TX DATA OUT

TX DATA OUT

RX DATA IN 

RX DATA IN 

70

70

52.5

52.5

Ctr

 tap

Transformer turns ratios:

N1:N2 = 1:1

N1:N3 = 1:0.71

Use Aeroflex  25T1553-1

N1:N3 for 

   stub 

coupling

0 Volts

Magnified View

(TYPICAL)

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Aeroflex Circuit Technology

SCD4404 REV D  10/27/99  Plainview NY (516) 694-6700

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Configurations and Ordering Information

DESC No.

Model No.

Receiver Data level

 Case

Specs.

5962-9174909HXC

ARX4404-001-1

Normally High

Plug In

1553 & Macair

5962-9174909HXA

ARX4404-001-2

Normally High

Plug In

1553 & Macair

5962-9174909HYC

ARX4404-201-1

Normally High

Flat Pack

1553 & Macair

5962-9174909HYA

ARX4404-201-2

Normally High

Flat Pack

1553 & Macair

5962-9174908HXC

ARX4407-001-1

Normally High

Plug In

1553

5962-9174908HXA

ARX4407-001-2

Normally High

Plug In

1553

5962-9174908HYC

ARX4407-201-1

Normally High

Flat Pack

1553

5962-9174908HYA

ARX4407-201-2

Normally High

Flat Pack

1553

To Be Assigned

ARX4440 

Normally Low

Plug In

1553 & Macair

To Be Assigned

ARX4440-FP

Normally Low

Flat Pack

1553 & Macair

To Be Assigned

ARX4467

Normally Low

Plug In

1553

To Be Assigned

ARX4467-FP

Normally Low

Flat Pack

1553

Special Note

Please note that Pins 6 and 11 must be GROUNDED in order for the receiver to operate. These Pins were

No Connect in the 3400 Series, because the External Variable Threshold was not an option.

If using the

4404

To replace the  3404

"

4440

"

3464

"

4407

"

3407

"

4467

"

3467

1.27

MAX

24

13

12

FLAT PACKAGE 

1.10

MAX

0.24

MIN

0.018 DIA.

±0.002

0.10 Typ

±0.002

1.27 MAX

0.080 ±0.015

0.009

±0.002

Notes 1. Dimensions shown are in inches

2. Pins are equally spaced at 0.100±0.002 tolerance non-cumulative each row. 

1.27 MAX

1.10

1.27 MAX

0.017

0.400

MAX

2 sides

PLUG-IN PACKAGE

0.100

0.167 for Low Profile Flat Pack

0.200 for Std Flat Pack

1. TX DATA OUT

2. TX DATA OUT

3. TX GND (+5V)

4. +15V (TX)

5. EXT. DATA THRES

6. INT. DATA THRES

7. RX DATA OUT

8. STROBE

9. RX GND (+5V)

10. RXDATA OUT

11. INT DATA THRES

12. EXT DATA THRES

13. +15V (RX)

14. N.C.

15. RX DATA IN 

16. RX DATA IN

17. GND

18. CASE GND

19. -15V (RX)

20. +5V

21. TX INHIBIT

22. TX DATA IN

23. TX DATA IN

24. -15V (TX)

Pin Connections

0.175

Pin 1 & ESD

Designator

Pin 1 & ESD

Designator

C I R C U I T   T E C H N O L O G Y

Aeroflex Circuit Technology 

35 South Service Road 

Plainview New York 11803                 

Telephone: (516) 694-6700

FAX:           (516)  694-6715

Toll Free Inquiries: (800) 843-1553

Specifications subject to change without notice

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