2

INDUSTRIALTEMPERATURERANGE

IDT74FCT16543AT/CT

FAST CMOS 16-BIT LATCHED TRANSCEIVER

PIN CONFIGURATION

TOP VIEW

1

B1

1

B2

GND

1

B3

1

B4

VCC

1

B5

1

B6

1

OEBA

1

B7

1

B8

2

B1

2

B2

GND

2

B3

2

B4

VCC

2

B5

GND

2

B7

2

B6

2

B8

GND

2

OEBA

GND

1

A1

1

A2

VCC

1

A3

1

A4

GND

1

A5

1

A6

1

A7

1

A8

GND

2

A1

2

A2

VCC

2

A3

2

A5

2

A4

2

A7

GND

2

A8

2

A6

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

PIN DESCRIPTION

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)

xAx

A-to-BDataInputsorB-to-A3-StateOutputs

xBx

B-to-ADataInputsorA-to-B3-StateOutputs

PackageType

PackageCode

Order Code

TSSOP

PAG56

PAG

SSOP

PVG56

PVG

Symbol

Description

Max

Unit

VTERM(2) Terminal Voltage with Respect to GND

–0.5 to 7

V

VTERM(3) Terminal Voltage with Respect to GND

–0.5 to VCC+0.5

V

TSTG

Storage Temperature

–65 to +150

°C

IOUT

DC Output Current

–60 to +120

mA

ABSOLUTE MAXIMUM RATINGS(1)

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

Parameter(1)

Conditions

Typ.

Max.

Unit

CIN

Input Capacitance

VIN = 0V

3.5

6

pF

COUT

Output Capacitance

VOUT = 0V

3.5

8

pF

CAPACITANCE (TA=+25°C,f=1.0MHz)

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.

FUNCTION TABLE(1,2)

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