MC14534BCLDS

更新时间： 2024-11-27 13:11:15

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		计数器
页数	文件大小	规格书
9页	229K
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数据手册

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MC14534BCLDS 数据手册

SEMICONDUCTOR TECHNICAL DATA

L SUFFIX

CERAMIC

CASE 623

The MC14534B is composed of five BCD ripple counters that have their

respective outputs multiplexed using an internal scanner. Outputs of each

counter are selected by the scanner and appear on four (BCD) pins.

Selection is indicated by a logic high on the appropriate digit select pin. Both

BCD and digit select outputs have three–state controls providing an

“open–circuit” when these controls are high and allowing multiplexing.

Cascading may be accomplished by using the carry–out pin. The counters

and scanner can be independently reset by applying a high to the counter

master reset (MR) and the scanner reset (SR). The MC14534B was

specifically designed for application in real time or event counters where

continual updating and multiplexed displays are used.

P SUFFIX

PLASTIC

CASE 709

DW SUFFIX

SOIC

CASE 751E

•

Four Operating Modes (See truth table)

Input Error Detection Circuit

Clock Conditioning Circuits for Slow Transition Inputs

Counter Sequences on Positive Transition of Clock A

Supply Voltage Range = 3.0 Vdc to 18 Vdc

Capable of Driving Two Low–power TTL Loads or One Low–power

Schottky TTL Load Over the Rated Temperature Range

ORDERING INFORMATION

MC14XXXBCP

MC14XXXBCL

MC14XXXBDW

Plastic

Ceramic

SOIC

= – 55° to 125°C for all packages.

BLOCK DIAGRAM

TO CAPACITORS

= PIN 24

= PIN 12

CLOCK B

CLOCK A

PULSE ERROR

DETECTOR

ERROR OUT

PULSE

SHAPER

TEST

CONTROL

MASTER

RESET

UNITS

TENS

HUNDREDS

THOUSANDS

TEN

THOUSANDS

CARRY

CARRY OUT

n+4

CONTROL

MODE A

MODE B

OUTPUT

MUX

CONTROL

MUX

BCD

OUT

SCANNER

RESET

SCANNER

CLOCK

SCANNER

3–STATE BCD

CONTROL

3–STATE DIGIT

CONTROL

3–State Control

Out

DS5

DS1

DS2

DS3

DS4

NOTE:

Q or DS

High Impedance

= 3–STATE

DIGIT SELECT

OUTPUT BUFFER

REV 3

1/94

Motorola, Inc. 1995

MOTOROLA CMOS LOGIC DATA

MC14534B

12 3 4 5 6 7...9

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