74HC194 查看數據表（PDF） - Philips Electronics

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产品描述 (功能)

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74HC194

4-bit bidirectional universal shift register

Philips Electronics 

Philips Semiconductors

4-bit bidirectional universal shift register

ORDERING INFORMATION

See “74HC/HCT/HCU/HCMOS Logic Package Information”.

PIN DESCRIPTION

PIN NO.

1

2

3, 4, 5, 6

7

8

9, 10

11

15, 14, 13, 12

16

SYMBOL

MR

DSR

D0 to D3

DSL

GND

S0, S1

CP

Q0 to Q3

VCC

NAME AND FUNCTION

asynchronous master reset input (active LOW)

serial data input (shift right)

parallel data inputs

serial data input (shift left)

ground (0 V)

mode control inputs

clock input (LOW-to-HIGH edge-triggered)

parallel outputs

positive supply voltage

Product specification

74HC/HCT194

Fig.1 Pin configuration.

Fig.2 Logic symbol.

Fig.3 IEC logic symbol.

December 1990

3

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