MC74AC190N 데이터 시트보기 (PDF) - Motorola => Freescale

부품명

상세내역

일치하는 목록

MC74AC190N

Up/Down Counter with Preset and Ripple Clock

Motorola => Freescale 

MC74AC190

Up/Down Counter

with Preset and Ripple Clock

The MC74AC190 is a reversible BCD (8421) decade counter which features

synchronous counting and asynchronous presetting. The preset feature allows

the MC74AC190 to be used in programmable dividers. The Count Enable input,

the Terminal Count output and the Ripple Clock output make possible a variety

of methods of implementing multistage counters. In the counting modes, state

changes are initiated by the rising edge of the clock.

• High-Speed — 120 MHz Typical Count Frequency

• Synchronous Counting

• Asynchronous Parallel Load

• Cascadable

• Outputs Source/Sink 24 mA

VCC P0 CP RC TC PL P2 P3

16 15 14 13 12 11 10 9

12345678

P1 Q1 Q0 CE U/D Q2 Q3 GND

PIN NAMES

CE

CP

P0–P3

PL

U/D

Q0–Q3

RC

TC

Count Enable Input

Clock Pulse Input

Parallel Data Inputs

Asynchronous Parallel Load Input

Up/Down Count Control Input

Flip-Flop Outputs

Ripple Clock Output

Terminal Count Output

UP/DOWN COUNTER

WITH PRESET

AND RIPPLE CLOCK

N SUFFIX

CASE 648-08

PLASTIC

D SUFFIX

CASE 751B-05

PLASTIC

LOGIC SYMBOL

PL P0 P1 P2 P3

U/D

RC

CE

CP

TC

Q0 Q1 Q2 Q3

FACT DATA

5-1

Share Link: