74HC/HCT192 데이터 시트보기 (PDF) - Philips Electronics

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74HC/HCT192

Presettable synchronous BCD decade up/down counter

Philips Electronics 

Philips Semiconductors

Presettable synchronous BCD decade

up/down counter

Product specification

74HC/HCT192

PIN DESCRIPTION

PIN NO.

SYMBOL

3, 2, 6, 7

4

5

8

11

12

13

14

15, 1, 10, 9

16

Q0 to Q3

CPD

CPU

GND

PL

TCU

TCD

MR

D0 to D3

VCC

Note

1. LOW-to-HIGH, edge triggered

NAME AND FUNCTION

flip-flop outputs

count down clock input(1)

count up clock input(1)

ground (0 V)

asynchronous parallel load input (active LOW)

terminal count up (carry) output (active LOW)

terminal count down (borrow) output (active LOW)

asynchronous master reset input (active HIGH)

data inputs

positive supply voltage

Fig.1 Pin configuration.

Fig.2 Logic symbol.

Fig.3 IEC logic symbol.

December 1990

4

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