8.6

2

IDT74FCT163501/A/C

3.3V 18-BIT REGISTERED TRANSCEIVER

COMMERCIAL TEMPERATURE RANGE

PIN CONFIGURATIONS

2776 drw 02

GND

GND

GND

GND

CLKAB

GND

CLKBA

GND

OEAB

LEAB

GND

GND

GND

GND

LEBA

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

SSOP/

TSSOP/TVSOP

TOP VIEW

SO56-1

SO56-2

SO56-3

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

CLKBA

B-to-A Clock Input

Ax

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

Bx

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

2776 tbl 01

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 conditions

above those indicated in the operational sections of this specification is

not implied. Exposure to absolute maximum rating conditions for ex-

tended periods may affect reliability.

2. Vcc terminals.

3. Input terminals.

4. Output and I/O terminals.

2776 lnk 03

Symbol

Description

Max.

Unit

Terminal Voltage with

Respect to GND

–0.5 to +4.6

V

Terminal Voltage with

Respect to GND

–0.5 to +7.0

V

Terminal Voltage with

Respect to GND

–0.5 to

V

Storage Temperature

–65 to +150

°C

DC Output Current

–60 to +60

mA

°C, f = 1.0MHz)

NOTE:

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

2776 lnk 04

Symbol

Conditions

Typ.

Max.

Unit

Input

Capacitance

3.5

6.0

pF

I/O

Capacitance

3.5

8.0

pF

NOTES:

2776 tbl 02

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 HIGH before LEAB went LOW.

4. H = HIGH Voltage Level

L = LOW Voltage Level

X = Don't Care

Z = High Impedance

↑ = LOW-to-HIGH Transition

FUNCTION TABLE

(1,4)

Inputs

Outputs

OEAB

LEAB

CLKAB

Ax

Bx

LX

X

X

Z

HH

X

L

L

HH

X

H

H

HL

↑

LL

HL

↑

HH

HL

L

X

HL

H

X