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부품번호 | 93L14DMQB 기능 |
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기능 | Quad Latch | ||
제조업체 | National Semiconductor | ||
로고 | |||
전체 6 페이지수
June 1989
93L14 Quad Latch
General Description
The 93L14 is a multifunctional 4-bit latch designed for gen-
eral purpose storage applications in high speed digital sys-
tems All outputs have active pull-up circuitry to provide high
capacitance drive and to provide low impedance in both
logic states for good noise immunity
Features
Y Can be used as single input D latches or set reset
latches
Y Active low enable gate input
Y Overriding master reset
Connection Diagram
Dual-In-Line Package
Logic Symbol
TL F 9612 – 1
Order Number 93L14DMQB or 93L14FMQB
See NS Package Number J16A or W16A
VCC e Pin 16
GND e Pin 8
Pin Names
E
D0 – D3
S0 – S3
MR
Q0 – Q3
Description
Enable Input (Active LOW)
Data Inputs
Set Inputs (Active LOW)
Master Reset Input (Active LOW)
Latch Outputs
TL F 9612 – 2
C1995 National Semiconductor Corporation TL F 9612
RRD-B30M105 Printed in U S A
Functional Description
The 93L14 consists of four latches with a common active
LOW Enable input and active LOW Master Reset input
When the Enable goes HIGH data present in the latches is
stored and the state of the latch is no longer affected by the
Sn and Dn inputs The Master Reset when activated over-
rides all other input conditions forcing all latch outputs LOW
Each of the four latches can be operated in one of two
modes
D-TYPE-LATCH For D-type operation the S input of a
latch is held LOW While the common Enable is active the
latch output follows the D input Information present at the
latch output is stored in the latch when the Enable goes
HIGH
SET RESET LATCH During set reset operation when the
common Enable is LOW a latch is reset by a LOW on the D
input and can be set by a LOW on the S input if the D input
is HIGH If both S and D inputs are LOW the D input will
dominate and the latch wil be reset When the Enable goes
HIGH the latch remains in the last state prior to disable-
ment The two modes of latch operation are shown in the
Truth Table
Logic Diagram
Truth Table
MR E D S
H LLL
H LHL
H HXX
H LLL
H LHL
H LLH
H LHH
H HXX
L XXX
H e HIGH Voltage Level
L e LOW Voltage Level
X e Immaterial
Qnb1 e Previous Output State
Qn e Present Output State
Qn
L
L
Qnb1
L
H
L
Qnb1
Qnb1
L
Operation
D Mode
R S Mode
RESET
TL F 9612 – 3
4
4페이지 | |||
구 성 | 총 6 페이지수 | ||
다운로드 | [ 93L14DMQB.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
93L14DMQB | Quad Latch | National Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |