2

INDUSTRIALTEMPERATURERANGE

IDT74FCT162500AT/CT

FASTCMOS18-BITREGISTEREDTRANSCEIVER

SSOP

TOP VIEW

PIN CONFIGURATION

GND

B2

B3

GND

B4

B5

VCC

B6

B7

B1

B8

B9

B10

B11

GND

B12

B13

VCC

B14

GND

CLKAB

B16

B15

B17

GND

B18

GND

CLKBA

OEAB

LEAB

A1

GND

A2

A3

VCC

A4

A5

GND

A6

A7

A8

A9

GND

A10

A11

VCC

A12

A18

A14

A13

A16

GND

A17

LEBA

A15

OEBA

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

OEAB

A-to-B Output Enable Input

OEBA

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

LEAB

A-to-B Latch Enable Input

LEBA

B-to-A Latch Enable Input

CLKAB

A-to-B Clock Input (Active LOW)

CLKBA

B-to-A Clock Input (Active LOW)

A x

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

B x

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

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)

(1)

(1)

(1)

(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. Output 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.

FUNCTION TABLE(1, 4)

NOTES:

1. A-to-B data flow is shown. B-to-A data flow is similar but uses

OEBA, LEBA,

and

CLKBA.

2. Output level before the indicated steady-state input conditions were established.

3. Output level before the indicated steady-state input conditions were established,

provided that

CLKAB was LOW before LEAB went LOW.

4. H = HIGH Voltage Level

L = LOW Voltage Level

X = Don't Care

Z = High-impedance

↓ = HIGH-to-LOW Transition

Inputs

Outputs

OEAB

LEAB

CLKAB

Ax

Bx

LX

X

X

Z

HH

X

L

L

HH

X

H

H

HL

↓

LL

HL

↓

HH

HL

H

X

B(2)

HL

L

X

B(3)