CD4043 IC Quad NOR R/S Latch with 3-State Outputs

CD4043 IC Quad NOR R/S
Latch

with 3-State Outputs

The CD4043 IC is a CMOS quad cross-coupled NOR R/S latch with 3-state outputs. It contains four independently controlled latches, each providing separate SET and RESET inputs along with a dedicated Q output. A common ENABLE input allows simultaneous control of all latch outputs, supporting direct bus interface without the need for additional components.

Features:

Wide supply voltage range: 3V to 15V

Low power: 100 nW (typ.)

High noise immunity: 0.45 VDD (typ.)

Separate SET and RESET inputs for each latch

NOR and NAND configuration

3-STATE output with common output enable

Specifications:

Supply Voltage: 3 ~ 15V

Supply Current: 40 nA

Product Category: Latches

Number of Circuits: 1 Circuit

Type: S-R Type

Number of Channels: 4 Channels

Number of Input Lines: 8 Line

Output Type: 3-State

Product Type: Latches

Reset Type: No Reset

Polarity: Non-Inverting

Quiescent Current: 20 uA

Number of Output Lines: 4 Line

High Level Output Current: -4.2 mA

Low Level Output Current: 32 mA

Propagation Delay Time: 300 ns at 5V, 140 ns at 10V, 100 ns at 15V

Logic Type: CMOS Quad NOR S/R Latch with 3-State Output

Minimum Operating Temperature: -55 ~ +125C

Mounting Style: Through Hole

Package/Case: PDIP-16

CD4043 Pinout

Pin No

Pin Name

Description

1

Q4

output of latch 4

2

Q1

output of latch 1

3

R1

reset input latch 1

4

S1

set input latch 1

5

ENB

enable pin

6

S2

set input latch 2

7

R2

reset input latch 2

8

VSS

source supply

9

Q2

output of latch 2

10

Q3

output of latch 3

11

R3

reset input latch 3

12

S3

set input latch 3

13

NC

no connection

14

S4

set input latch 4

15

R4

reset input latch 4

16

VDD

Drain supply

Applications:

Temporary data storage elements.

Multiple bus storage systems.

Strobed register designs.

Four-bit independent latch circuits with enable control.

General digital logic and timing applications.

Datasheet:

CD4043