PI74LCX16646 查看數據表（PDF） - Pericom Semiconductor

零件编号

产品描述 (功能)

生产厂家

PI74LCX16646

Fast CMOS 3.3V 16-Bit Registered Transceivers

Pericom Semiconductor 

PI74LCX16646

123456789012345678901234567890121234567890123456789012345678901212345678901F23a45s6t78C90M123O45S67839.0312V12314656-7B89i0t12R34e5g67i8s9t0e1r23e4d567T89r0a12n1s2c34e5i6v78e9r0s12

Product Pin Description

Pin Name

xOE, xDIR

xCLKAB, xCLKBA

xSAB, xSBA

xAx

xBx

GND

VCC

Description

Output Enable Inputs (Active LOW)

Clock Pulse Inputs

Output Data Source Select Inputs

Data Register A Inputs

Data Register B Outputs

Data Register B Inputs

Data Register A Outputs

Ground

Power

Product Pin Configuration

1DIR

1CLKAB

1SAB

GND

1A1

1A2

VCC

1A3

1A4

1A5

GND

1A6

1A7

1A8

2A1

1A2

1A3

GND

2A4

2A5

2A6

VCC

2A7

2A8

GND

2SAB

2CLKAB

2DIR

1

56

2

55

3

54

4

53

5

52

6

51

7

50

8

49

9

48

10

47

11

46

12

45

13 56-Pin 44

14 V56 43

15 A56 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

1OE

1CLKBA

1SBA

GND

1B1

1B2

VCC

1B3

1B4

1B5

GND

1B6

1B7

1B8

2B1

2B2

2B3

GND

2B8

2B7

2B6

VCC

2B7

2B8

GND

2SBA

2CLKBA

2OE

Truth Table(2)

Inputs

Function

xOE xDIR xCLKAB xCLKBA xSAB xSBA

Isolation

Store A and B Data

H

X

H or L

H

X

↑

H or L

↑

X

X

X

X

Real Time B Data to A Bus

L

L

X

Stored B Data to A Bus

L

L

X

X

H or L

X

L

X

H

Real Time A Data to B Bus

L

H

X

Stored A Data to B Bus

L

H

H or L

X

L

X

X

H

X

Data I/O(1)

xAx

xBx

Input

Input

Output

Input

Input

Output

Notes:

1. The data output functions may be enabled or disabled by various signals at the xOE or xDIR inputs. Data input functions are

always enabled, i.e., data at the bus pins will be stored on every LOW-to-HIGH transition on the clock inputs.

2. H = High Voltage Level, X = Don't Care,

L = Low Voltage Level, ↑ = LOW-to-HIGH Transition

2

PS2093B 09/20/02

Share Link: