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NXP Semiconductors Electronic Components Datasheet



4043B

Quadruple R/S latch with 3-state outputs


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4043B pdf
INTEGRATED CIRCUITS
DATA SHEET
For a complete data sheet, please also download:
The IC04 LOCMOS HE4000B Logic
Family Specifications HEF, HEC
The IC04 LOCMOS HE4000B Logic
Package Outlines/Information HEF, HEC
HEF4043B
MSI
Quadruple R/S latch with 3-state
outputs
Product specification
File under Integrated Circuits, IC04
January 1995



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4043B pdf
Philips Semiconductors
Quadruple R/S latch with 3-state outputs
DESCRIPTION
The HEF4043B is a quadruple R/S latch with 3-state
outputs with a common output enable input (EO). Each
latch has an active HIGH set input (S0 to S3), an active
HIGH reset input (R0 to R3) and an active HIGH 3-state
output (O0 to O3).
When EO is HIGH, the state of the latch output (On) can be
determined from the function table below. When EO is
LOW, the latch outputs are in the high impedance
OFF-state. EO does not affect the state of the latch.
The high impedance off-state feature allows common
busing of the outputs.
Product specification
HEF4043B
MSI
Fig.2 Pinning diagram.
Fig.1 Functional diagram.
HEF4043BP(N): 16-lead DIL; plastic (SOT38-1)
HEF4043BD(F): 16-lead DIL; ceramic (cerdip) (SOT74)
HEF4043BT(D): 16-lead SO; plastic (SOT109-1)
( ): Package Designator North America
PINNING
EO
S0 to S3
R0 to R3
O0 to O3
common output enable input
set inputs (active HIGH)
reset inputs (active HIGH)
3-state buffered latch outputs
FUNCTION TABLE
INPUTS
EO Sn
LX
HL
HH
HL
Rn
X
H
X
L
OUTPUT
On
Z
L
H
latched
Notes
1. H = HIGH state (the more positive voltage)
L = LOW state (the less positive voltage)
X = state immaterial
Z = high impedance state
FAMILY DATA, IDD LIMITS category MSI
See Family Specifications
January 1995
2



Part Number 4043B
Description Quadruple R/S latch with 3-state outputs
Maker NXP - NXP
Total Page 5 Pages
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