2

INDUSTRIALTEMPERATURERANGE

IDT74FCT16543AT/CT

FASTCMOS 16-BITLATCHEDTRANSCEIVER

PI N CON FI GU RAT I ON

TOP VIEW

1

1

GND

1

1

1

1

1

OEBA

1

1

2

2

GND

2

2

2

GND

2

2

2

GND

2

OEBA

GND

1

1

1

1

GND

1

1

1

1

GND

2

2

2

2

2

2

GND

2

2

2

OEAB

2

LEAB

2

CEAB

1

CEAB

1

LEAB

1

OEAB

1

LEBA

1

CEBA

2

LEBA

2

CEBA

47

37

38

39

40

41

42

43

44

45

46

33

34

35

36

56

55

49

50

51

52

53

54

48

1

2

3

4

5

6

7

8

9

10

12

13

14

15

16

17

18

19

20

11

21

22

23

24

29

30

31

32

25

26

27

28

PI N DESCRI PT I ON

Pin Names

Description

xOEAB

A-to-B Output Enable Input (Active LOW)

xOEBA

B-to-A Output Enable Input (Active LOW)

xCEAB

A-to-B Enable Input (Active LOW)

xCEBA

B-to-A Enable Input (Active LOW)

xLEAB

A-to-B Latch Enable Input (Active LOW)

xLEBA

B-to-A Latch Enable Input (Active LOW)

x A x

A-to-B Data Inputs or B-to-A 3-State Outputs

x B x

B-to-A Data Inputs or A-to-B 3-State Outputs

Package Type

Package Code

Order Code

TSSOP

PAG56

PAG

SSOP

PVG56

PVG

Symbol

Description

Max

Unit

–0.5 to 7

V

V

Storage Temperature

–65 to +150

° C

DC Output Current

–60 to +120

mA

NOTES:

1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause

permanent damage to the device. This is a stress rating only and functional operation

of the device at these or any other conditions above those indicated in the operational

sections of this specification is not implied. Exposure to absolute maximum rating

conditions for extended periods may affect reliability.

2. All device terminals except FCT162XXX Output and I/O terminals.

3. Outputs and I/O terminals for FCT162XXX.

Symbol

Conditions

Typ.

Max.

Unit

Input Capacitance

3.5

6

pF

Output Capacitance

3.5

8

pF

NOTE:

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

NOTES:

1. * Before xLEAB LOW-to-HIGH Transition

H = HIGH Voltage Level

L = LOW Voltage Level

X = Don’t Care

2. A-to-B data flow shown; B-to-A flow control is the same, except using xCEBA, xLEBA

and xOEBA.

For A-to-B (Symmetric with B-to-A)

Latch

Output

Inputs

Status

Buffers

xCEAB

xLEAB

xOEAB

xAx to xBx

xBx

H

X

X

Storing

Z

X

H

X

Storing

X

L

L

L

Transparent

Current A Inputs

L

H

L

Storing

Previous* A Inputs

L

L

H

Transparent

Z

L

H

H

Storing

Z