Datasheet > 54HC4538A

54HC4538A

更新时间： 2022-11-24 20:48:32

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		振荡器
页数	文件大小	规格书
13页	371K
描述
Dual Precision Monostable Multivibrator(Retiggerable, Resettable)

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54HC4538A 数据手册

SEMICONDUCTOR TECHNICAL DATA

J SUFFIX

CERAMIC PACKAGE

CASE 620–10

The MC54/74HC4538A is identical in pinout to the MC14538B. The device

inputs are compatible with standard CMOS outputs; with pullup resistors,

they are compatible with LSTTL outputs.

This dual monostable multivibrator may be triggered by either the positive

or the negative edge of an input pulse, and produces a precision output

pulse over a wide range of pulse widths. Because the device has conditioned

trigger inputs, there are no trigger–input rise and fall time restrictions. The

N SUFFIX

PLASTIC PACKAGE

CASE 648–08

output pulse width is determined by the external timing components, R and

C . The device has a reset function which forces the Q output low and the Q

output high, regardless of the state of the output pulse circuitry.

D SUFFIX

SOIC PACKAGE

CASE 751B–05

•

Unlimited Rise and Fall Times Allowed on the Trigger Inputs

Output Pulse is Independent of the Trigger Pulse Width

± 10% Guaranteed Pulse Width Variation from Part to Part (Using the

Same Test Jig)

ORDERING INFORMATION

MC54HCXXXXAJ

MC74HCXXXXAN

MC74HCXXXXAD

Ceramic

Plastic

SOIC

•

Output Drive Capability: 10 LSTTL Loads

Outputs Directly Interface to CMOS, NMOS and TTL

Operating Voltage Range: 3.0 to 6.0 V

Low Input Current: 1.0 µA

High Noise Immunity Characteristic of CMOS Devices

In Compliance with the Requirements Defined by JEDEC Standard

No. 7A

PIN ASSIGNMENT

GND

1/R

GND

•

Chip Complexity: 145 FETs or 36 Equivalent Gates

RESET 1

C 2/R 2

X X

RESET 2

LOGIC DIAGRAM

R 1

GND

TRIGGER

INPUTS

R 2

FUNCTION TABLE

RESET 1

Inputs

Outputs

Reset

TRIGGER

INPUTS

Not Triggered

RESET 2

L,H,

Not Triggered

PIN 16 = V

PIN 8 = GND

AND C ARE EXTERNAL COMPONENTS

PIN 1 AND PIN 15 MUST BE HARD WIRED TO GND

Not Triggered

10/95

Motorola, Inc. 1995

REV 6

3–1

12 3 4 5 6 7...13

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