Datasheet > HD74HC4518/HD74HC4520

HD74HC4518/HD74HC4520

更新时间： 2024-11-26 23:55:27

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HD74HC4518/HD74HC4520 数据手册

HD74HC4518/HD74HC4520

Dual BCD Up Counters/Dual Binary Up Counters

ADE-205-542 (Z)

1st. Edition

Sep. 2000

Description

The HD74HC4518 dual BCD counter and the HD74HC4520 dual binary counter consist of two identical,

independent, internally synchronous 4-stage counters. The counter stages are type D flip-flops, with

interchangeable Clock and Enable lines for incrementing on either the positive-going or negative-going

transition as required when cascading multiple stages. Each counter can be cleared by applying a high

level on the Reset line. In addition, the HD74HC4518 will count out of all undefined states within two

clock periods. These complementary MOS up counters find primary use in multi-stage synchronous or

ripple counting applications requiring low power dissipation and/or high noise immunity.

Features

•

High Speed Operation

High Output Current: Fanout of 10 LSTTL Loads

Wide Operating Voltage: V_CC= 2 to 6 V

Low Input Current: 1 µA max

Low Quiescent Supply Current: I_CC(static) = 4 µA max (Ta = 25°C)

Function Table

Clock

Enable

Reset

Operation

Increment counter

No change

Q₀to Q₃= L

12 3 4 5 6 7...9

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型号	品牌	获取价格	描述	数据表
HD74HC4518FP	RENESAS	获取价格	HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP DECADE COUNTER, PDSO16, FP-16DA
HD74HC4518FP-E	RENESAS	获取价格	HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP DECADE COUNTER, PDSO16, FP-16DA
HD74HC4518FPEL	RENESAS	获取价格	Dual BCD Up Counters
HD74HC4518P	RENESAS	获取价格	Dual BCD Up Counters
HD74HC4518T	RENESAS	获取价格	HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP DECADE COUNTER, PDSO16, TSSOP-16
HD74HC4520	RENESAS	获取价格	Dual BCD Up Counters
HD74HC4520	HITACHI	获取价格	Dual BCD Use Converters/Dual Binary Up Converters
HD74HC4520FP	RENESAS	获取价格	HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, PDSO16, FP-16DA
HD74HC4520FP-E	RENESAS	获取价格	HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, PDSO16, FP-16DA
HD74HC4520FPEL	RENESAS	获取价格	Dual BCD Up Counters