INDUSTRIALTEMPERATURERANGE

2

IDT74LVCH16543A

3.3VCMOS16-BITREGISTEREDTRANSCEIVERWITH3-STATEOUTPUTS

TSSOP

TOP VIEW

PIN CONFIGURATION

Symbol

Description

Max

Unit

Terminal Voltage with Respect to GND

–0.5 to +6.5

V

Storage Temperature

–65 to +150

°C

DC Output Current

–50 to +50

mA

Continuous Clamp Current,

–50

mA

Continuous Current through each

±100

mA

NOTE:

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.

NOTE:

1. These pins have "Bus-Hold". All other pins are standard inputs, outputs, or I/Os.

NOTE:

1. As applicable to the device type.

Symbol

Conditions

Typ.

Max.

Unit

Input Capacitance

4.5

6

pF

Output Capacitance

6.5

8

pF

I/O Port Capacitance

6.5

8

pF

1

OEAB

GND

1

1

1

1

GND

1

1

GND

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

48

49

50

51

52

53

54

55

56

1

GND

2

CEAB

25

26

27

28

32

31

30

29

1

LEAB

1

CEAB

1

1

2

2

2

2

2

2

2

2

2

LEAB

2

OEAB

1

OEBA

GND

1

1

1

1

GND

1

1

GND

GND

2

CEBA

1

LEBA

1

CEBA

1

1

2

2

2

2

2

2

2

2

2

LEBA

2

OEBA

NOTES:

1. H = HIGH Voltage Level

L = LOW Voltage Level

X = Don’t Care

Z = High-Impedance

2. A-to-B data flow is shown. B-to-A data flow is similar but uses xCEBA, xLEBA, and

xOEBA

.

3. Before xLEAB LOW-to-HIGH transition.

Inputs

Latch Status

Output Buffers

xCEAB

xLEAB

xOEAB

xAx to xBx

xBx

H

X

X

Storing

High Z

X

X

H

Storing

High Z

L

L

L

Transparent

Current A Inputs

L

H

L

Storing

Previous

L

L

H

Transparent

High Z

L

H

H

Storing

High Z

X

H

X

Storing

NotRecommended

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

xBx

PIN DESCRIPTION