74HC401 데이터 시트보기 (PDF) - Philips Electronics

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74HC401

8-bit synchronous BCD down counter

Philips Electronics 

Philips Semiconductors

8-bit synchronous BCD down counter

Product specification

74HC/HCT40102

2. For HC the condition is VI = GND to VCC

For HCT the condition is VI = GND to VCC − 1.5 V

ORDERING INFORMATION

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

PIN DESCRIPTION

PIN NO.

1

2

3

4, 5, 6, 7, 10, 11, 12, 13

8

9

14

15

16

SYMBOL

CP

MR

TE

P0 to P7

GND

PL

TC

PE

VCC

NAME AND FUNCTION

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

asynchronous master reset input (active LOW)

terminal enable input

jam inputs

ground (0 V)

asynchronous preset enable input (active LOW)

terminal count output (active LOW)

synchronous preset enable input (active LOW)

positive supply voltage

Fig.1 Pin configuration.

Fig.2 Logic symbol.

Fig.3 IEC logic symbol.

December 1990

3

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