PI74ALVCH1622601A データシートの表示（PDF） - Pericom Semiconductor Corporation

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PI74ALVCH1622601A

18-Bit Universal Bus Transceiver With 3-State Outputs

Pericom Semiconductor Corporation 

PI74ALVCH1622601

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Product Pin Description

Pin Name

CLKEN

OE

LE

CLK

Ax

Bx

GND

VCC

Description

Clock Enable Input (Active LOW)

Output Enable Input (Active LOW)

Latch Enable (Active HIGH)

Clock Input (Active HIGH)

Data I/O

Data I/O

Ground

Power

Product Pin Configuration

OEAB

LEAB

A1

GND

A2

A3

VCC

A4

A5

A6

GND

A7

A8

A9

A10

A11

A12

GND

A13

A14

A15

VCC

A16

A17

GND

A18

OEBA

LEBA

1

56

2

55

3

54

4

53

5

52

6

51

7 56-PIN 50

8 A-56 49

V-56

9

48

10

47

11

46

12

45

13

44

14

43

15

42

16

41

17

40

18

39

19

38

20

37

21

36

22

35

23

34

24

33

25

32

26

31

27

30

28

29

CLKENAB

CLKAB

B1

GND

B2

B3

VCC

B4

B5

B6

GND

B7

B8

B9

B10

B11

B12

GND

B13

B14

B15

VCC

B16

B17

GND

B18

CLKBA

CLKENBA

Truth Table(1)†

Inputs

Output

CLKENAB OEAB LEAB CLKAB A

B

X

H

X

X

X

Z

X

L

H

X

L

L

X

L

H

S

H

H

H

L

L

X

X

B0‡

H

L

L

X

X

B0‡

L

L

L

­

L

L

L

L

L

­

H

H

L

L

L

L

X

B0‡

L

L

L

H

X

B0§

Notes:

1. H = High Signal Level

L = Low Signal Level

Z = High Impedance

↑ = LOW-to-HIGH Transition

† A-to-B data flow is shown:

B-to-A flow is similar but uses OEBA, LEBA,

CLKBA, and CLKENBA.

‡ Output level before the indicated steady-state input

conditions were established.

§ Output level before the indicated steady-state input

conditions were established, provided that CLKAB is

LOW before LEAB goes LOW.

2

PS8115B 02/03/98

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