background image

IDT74FCT163245/A/C

3.3V CMOS 16-BIT BIDIRECTIONAL TRANSCEIVERS

COMMERCIAL TEMPERATURE RANGE

8.2

1

Integrated Device Technology, Inc.

The FCT163245/A/C 16-bit transceivers are built using

advanced dual metal CMOS technology.  These high-speed,

low-power transceivers are ideal for synchronous communi-

cation between two busses (A and B).  The Direction and

Output Enable controls are designed to operate these devices

as either two independent 8-bit transceivers or one 16-bit

transceiver.   The direction control pin (xDIR) controls the

direction of data flow.  The output enable pin (x

OE

) overrides

the direction control and disables both ports. All inputs are

designed with hysteresis for improved noise margin.

DESCRIPTION:

The IDT logo is a registered trademark of Integrated Device Technology, Inc.

FEATURES:

• 0.5 MICRON CMOS Technology

• Typical t

SK

(o) (Output Skew) < 250ps

• ESD > 2000V per MIL-STD-883, Method 3015;

> 200V using machine model (C = 200pF, R = 0)

• Packages include 25 mil pitch SSOP, 19.6 mil pitch

TSSOP and 15.7 mil pitch TVSOP

• Extended commercial range of -40

°

C to +85

°

C

• V

CC

 = 3.3V 

±

0.3V, Normal Range or

V

CC

 = 2.7 to 3.6V, Extended Range

• CMOS power levels (0.4

µ

W typ. static)

• Rail-to-Rail output swing for increased noise margin

• Low Ground Bounce (0.3V typ.)

• Inputs (except I/O) can be driven by 3.3V or 5V

components

FUNCTIONAL BLOCK DIAGRAM

DIR

2

OE

2

A

1

2

A

2

2

A

3

2

A

4

2

A

5

2

A

6

2

A

7

2

A

8

2

B

1

2

B

2

2

B

3

2

B

4

2

B

5

2

B

6

2

B

7

2

B

8

2554 drw 02

3.3V CMOS 16-BIT

BIDIRECTIONAL

TRANSCEIVERS

IDT74FCT163245/A/C

1

 

DIR

1

OE

1

A

1

1

A

2

1

A

3

1

A

4

1

A

5

1

A

6

1

A

7

1

A

8

1

B

1

1

B

2

1

B

3

1

B

4

1

B

5

1

B

6

1

B

7

1

B

8

2554 drw 01

1

COMMERCIAL TEMPERATURE RANGE

AUGUST 1996

©

1996 Integrated Device Technology, Inc.

8.2

        DSC-2554/6

1

background image

IDT74FCT163245/A/C

3.3V CMOS 16-BIT BIDIRECTIONAL TRANSCEIVERS

COMMERCIAL TEMPERATURE RANGE

8.2

2

PIN CONFIGURATIONS

1

DIR

1

B

1

GND

1

B

3

V

CC

GND

2

B

2

GND

V

CC

GND

1

B

2

1

B

4

1

B

5

1

B

6

1

B

7

1

B

8

2

B

1

2

B

3

2

B

4

2

B

5

2

B

7

2

B

8

2

B

6

2

DIR

1

A

1

1

A

2

GND

1

A

3

1

A

4

V

CC

1

A

5

1

A

6

1

A

7

1

A

8

2

A

1

2

A

2

2

A

3

2

A

4

V

CC

2

A

5

2

A

7

2

A

8

2

A

6

GND

GND

GND

2

OE

1

OE

2554 drw 03

39

29

30

31

32

33

34

35

36

37

38

25

26

27

28

48

47

41

42

43

44

45

46

40

1

2

3

4

5

6

7

8

9

10

12

13

14

15

16

17

18

19

20

11

21

22

23

24

SSOP/

TSSOP/TVSOP

TOP VIEW

SO48-1

SO48-2

SO48-3

PIN DESCRIPTION

2554 tbl 01

Pin Names

Description

x

OE

Output Enable Input (Active LOW)

xDIR

Direction Control Input

xAx

Side A Inputs or 3-State Outputs

xBx

Side B Inputs or 3-State Outputs

ABSOLUTE MAXIMUM RATINGS

(1)

NOTES:

1. Stresses greater than those listed under ABSOLUTE MAXIMUM RAT-

INGS may cause permanent damage to the device.  This is a stress rating

only and functional operation of the device at these or any other condi-

tions above those indicated in the operational sections of this specifica-

tion is not implied.  Exposure to absolute maximum rating conditions for

extended periods may affect reliability.

2. Vcc  terminals.

3. Input terminals.

4. Output and I/O terminals.

2554 lnk 03

2554 tbl 02

CAPACITANCE 

(T

= +25

°

C, f = 1.0MHz)

Symbol

Parameter

(1)

Conditions

Typ.

Max.

Unit

C

IN

Input

Capacitance

V

IN

  = 0V

3.5

6.0

pF

C

I/O

I/O

Capacitance

V

OUT 

= 0V

3.5

8.0

pF

NOTE:

1. This parameter is measured at characterization but not tested.

2554 lnk 04

Symbol

Description

Max.

Unit

V

TERM(2)

Terminal Voltage with

Respect to GND

–0.5 to +4.6

V

V

TERM(3)

Terminal Voltage with

Respect to GND

–0.5 to +7.0

V

V

TERM(4)

Terminal Voltage with

Respect to GND

–0.5 to  

V

CC

 + 0.5  

V

T

STG

Storage Temperature

–65 to +150

°

C

I

OUT

DC Output Current

–60 to +60   

mA

FUNCTION TABLE

(1)

Inputs

x

OE

OE

xDIR

Outputs

L

L

Bus B Data to Bus A

L

H

Bus A Data to Bus B

H

X

High Z State

NOTE:

1. H = HIGH Voltage Level

L = LOW Voltage Level

X = Don't Care

Z = High Impedance

background image

IDT74FCT163245/A/C

3.3V CMOS 16-BIT BIDIRECTIONAL TRANSCEIVERS

COMMERCIAL TEMPERATURE RANGE

8.2

3

DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE

Following Conditions Apply Unless Otherwise Specified:

Commercial: T

A

 = –40

°

C to +85

°

C, V

CC 

= 2.7V to 3.6V

2554 lnk 05

Symbol

Parameter

Test Conditions

(1)

Min.

Typ.

(2)

Max.

Unit

V

IH

Input HIGH Level  (Input pins)

Guaranteed Logic HIGH Level

2.0

5.5

V

Input HIGH Level  (I/O  pins)

2.0

V

CC

+0.5

V

IL

Input LOW Level

Guaranteed Logic LOW Level

–0.5

0.8

V

(Input and I/O pins)

I

I H

Input HIGH Current (Input pins)

V

CC

 = Max.

V

I

 = 5.5V

±

1

µ

A

Input HIGH Current (I/O pins)

V

I

 = V

CC

±

1

I

I L

Input LOW Current (Input pins)

V

I

 = GND

±

1

Input LOW Current (I/O pins)

V

I

 = GND

±

1

I

OZH

High Impedance Output Current

V

CC

 = Max.

V

= V

CC

±

1

µ

A

I

OZL

(3-State Output pins)

V

O

 = GND

±

1

V

IK

Clamp Diode Voltage

V

CC

 = Min., I

IN  

= –18mA

0.7

1.2

V

I

ODH

Output HIGH Current

V

CC

 = 3.3V, V

IN 

= V

IH 

or V

IL,  

V

= 1.5V

(3)

–36

–60

–110

mA

I

ODL

Output LOW Current

V

CC

 = 3.3V, V

IN 

= V

IH 

or V

IL,  

V

= 1.5V

(3)

50

90

200

mA

V

OH

Output HIGH Voltage

V

CC

 = Min.

I

OH

 = –0.1mA  

V

CC

0.2

V

V

IN

 = V

IH 

or V

IL

I

OH

 = –3mA  

2.4

3.0

V

CC

 = 3.0V

V

IN

 = V

IH 

or V

IL

I

OH

 = –8mA  

2.4

(5)

3.0

V

OL

Output LOW Voltage

V

CC

 = Min.

I

OL

 = 0.1mA

0.2

V

V

IN

 = V

IH 

or V

IL

I

OL

 = 16mA

0.2

0.4

I

OL

 = 24mA

0.3

0.55

V

CC

 = 3.0V

V

IN

 = V

IH 

or V

IL

I

OL

 = 24mA

0.3

0.50

I

OS

Short Circuit Current

(4)

V

CC

 = Max.,  V

= GND

(3)

–60

135

–240

mA

V

H

Input Hysteresis

                                         —

150

mV

I

CCL

I

CCH

Quiescent Power Supply Current

V

CC

 = Max.,  

V

IN

 = GND or V

CC

0.1

10

µ

A

I

CCZ

NOTES:

1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.

2. Typical values are at Vcc = 3.3V, +25

°

C ambient.

3. Not more than one output should be tested at one time.   Duration of the test should not exceed one second.

4. This parameter is guaranteed but not tested.

5. V

OH

 = V

CC

 –0.6V at rated current.

background image

IDT74FCT163245/A/C

3.3V CMOS 16-BIT BIDIRECTIONAL TRANSCEIVERS

COMMERCIAL TEMPERATURE RANGE

8.2

4

POWER SUPPLY  CHARACTERISTICS

NOTES:

1. For conditions shown as max. or min., use appropriate value specified under Electrical Characteristics for the applicable device type.

2. Typical values are at V

CC 

= 3.3V, +25

°

C ambient.

3. Per TTL driven input; all other inputs at V

CC 

or GND.

4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.

5. Values for these conditions are examples of the I

CC

 formula.   These limits are guaranteed but not tested.

6. I

C

 = I

QUIESCENT

 + I

INPUTS

 + I

DYNAMIC

I

C

 = I

CC

 + 

I

CC

 D

H

N

T

 + I

CCD 

 (f

CP

N

CP

/2 + fiNi)

I

CC

 = Quiescent Current (I

CCL,  

I

CCH 

and 

 

I

CCZ

)

I

CC

 = Power Supply Current for a TTL High Input

D

H

 = Duty Cycle for TTL Inputs High

N

T

 = Number of TTL Inputs at D

H

I

CCD

 = Dynamic Current Caused by an Input Transition Pair (HLH or LHL)

f

CP

 = Clock Frequency for Register Devices (Zero for Non-Register Devices)

N

CP

 = Number of Clock Inputs at f

CP

f

i

 = Input Frequency

N

= Number of Inputs at fi

2554 tbl 06

Symbol

Parameter

Test Conditions

(1)

Min.

Typ.

(2)

Max.

Unit

I

CC

Quiescent Power Supply Current

V

CC

 = Max.

V

IN

 = V

CC  

– 0.6V

(3)

2.0

30

µ

A

TTL Inputs HIGH

I

CCD

Dynamic Power Supply  

Current

(4)

V

CC

 = Max.

Outputs Open

x

OE

 = xDIR = GND   

One Input Toggling

50% Duty Cycle

V

IN

 = V

CC

  

V

IN

 = GND

50

75

µ

A/

MHz

I

C

Total Power Supply Current

(6)

V

CC

 = Max.

V

IN

 = V

CC

0.5

0.8

mA

Outputs Open

V

IN

 = GND

fi =10MHz

50% Duty Cycle

V

IN

 = V

CC 

–0.6V

0.5

0.8

x

OE

 = xDIR = GND   

One Bit Toggling

V

IN

 = GND

V

CC

 = Max.

Outputs Open

fi = 2.5MHz

V

IN

 = V

CC

V

IN

 = GND

2.0

3.0

(5)

50% Duty Cycle

x

OE

 = xDIR = GND   

Sixteen Bits Toggling

V

IN

 = V

CC 

–0.6V

V

IN

 = GND

2.0

3.3

(5)

background image

IDT74FCT163245/A/C

3.3V CMOS 16-BIT BIDIRECTIONAL TRANSCEIVERS

COMMERCIAL TEMPERATURE RANGE

8.2

5

SWITCHING CHARACTERISTICS OVER OPERATING RANGE

(4)

FCT163245

FCT163245A

FCT163245C

Symbol

Parameter

Condition

(1)

Min

.

(2)

Max.

Min.

(2)

Max.

Min

.

(2)

Max

.

Unit

t

PLH

t

PHL

Propagation Delay

A to B, B to A

C

L

 = 50pF

R

L

 = 500

1.5

7.0

1.5

4.6

1.5

4.1

ns

t

PZH

t

PZL

Output Enable Time

x

OE

 to A or B

1.5

9.5

1.5

6.2

1.5

5.8

ns

t

PHZ

t

PLZ

Output Disable Time

x

OE

 to A or B

1.5

7.5

1.5

5.0

1.5

4.8

ns

t

PZH

t

PZL

Output Enable Time

xDIR to A or B

(5)

1.5

9.5

1.5

6.2

1.5

5.8

ns

t

PHZ

t

PLZ

Output Disable Time

xDIR to A or B

(5)

1.5

7.5

1.5

5.0

1.5

4.8

ns

t

SK

(o)

Output Skew

(3)

0.5

0.5

0.5

ns

2554 tbl 07

NOTES:

1. See test circuit and waveforms.

2. Minimum limits are guaranteed but not tested on Propagation Delays.

3. Skew between any two outputs, of the same package, switching in the same direction.  This parameter is guaranteed by design.

4. Propagation Delays and Enable/Disable times are with V

CC

 = 3.3V 

±

0.3V, Normal Range.  For V

CC

 = 2.7V to 3.6V, Extended Range, all Propagation Delays

and Enable/Disable times should be degraded by 20%.

5. This parameter is guaranteed but not tested.

background image

IDT74FCT163245/A/C

3.3V CMOS 16-BIT BIDIRECTIONAL TRANSCEIVERS

COMMERCIAL TEMPERATURE RANGE

8.2

6

DEFINITIONS:

C

L

=

Load capacitance: includes jig and probe capacitance.

R

=

Termination resistance: should be equal to Z

OUT 

of the Pulse

Generator.

3V

1.5V

0V

3V

1.5V

0V

3V

1.5V

0V

3V

1.5V

0V

DATA

INPUT

TIMING 

INPUT

ASYNCHRONOUS CONTROL

PRESET

CLEAR

ETC.

SYNCHRONOUS CONTROL

t

SU

t

H

t

REM

t

SU

t

H

HIGH-LOW-HIGH

PULSE

LOW-HIGH-LOW

PULSE

t

W

1.5V

1.5V

SAME PHASE

INPUT TRANSITION

3V

1.5V

0V

1.5V

V

OH

t

PLH

OUTPUT

OPPOSITE PHASE

INPUT TRANSITION

3V

1.5V

0V

t

PLH

t

PHL

t

PHL

V

OL

CONTROL

INPUT

3V

1.5V

0V

3V

0V

OUTPUT

NORMALLY

LOW

OUTPUT

NORMALLY

HIGH

SWITCH

      6V

SWITCH

GND

V

OL

0.3V

0.3V

t

PLZ

t

PZL

t

PZH

t

PHZ

3V

0V

1.5V

1.5V

ENABLE

DISABLE

V

OH

PRESET

CLEAR

CLOCK ENABLE

ETC.

Pulse

Generator

R

T

D.U.T.

V

CC

V

IN

C

L

V

OUT

50pF

500

500

GND

6V

Open

ENABLE AND DISABLE TIMES

PROPAGATION DELAY

SET-UP, HOLD AND RELEASE TIMES

PULSE WIDTH

SWITCH POSITION

TEST CIRCUITS AND WAVEFORMS

TEST CIRCUITS FOR ALL OUTPUTS

2554 drw 09

2554 drw 05

2554 drw 06

2554 drw 08

2554 drw 07

Test

Switch

Open Drain

Disable Low

Enable Low

6V

Disable High

Enable High

GND

All Other tests

Open

2554 lnk 08

NOTES:

1. Diagram shown for input Control Enable-LOW and input Control

Disable-HIGH.

2. Pulse Generator for All Pulses: Rate 

 1.0MHz; t

F

 

 2.5ns; t

R

 

 2.5ns.

3. If V

CC

 is below 3V, input voltage swings should be adjusted not to

exceed V

CC

.

background image

IDT74FCT163245/A/C

3.3V CMOS 16-BIT BIDIRECTIONAL TRANSCEIVERS

COMMERCIAL TEMPERATURE RANGE

8.2

7

ORDERING INFORMATION

IDT         XX

Temp. Range

      XXXX

Device Type

X

Package

74

–40

°

C to +85

°

C

PV

PA

PF

163245

163245A

163245C

Shrink Small Outline Package (SO48-1)

Thin Shrink Small Outline Package (SO48-2)

Thin Very Small Outline Package (SO48-3)

Non-Inverting 16-Bit Bidirectional Transceiver

FCT

2554 drw 10