CD4723BMN NSC [National Semiconductor], CD4723BMN Datasheet

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CD4723BMN

Manufacturer Part Number
CD4723BMN
Description
Dual 4-Bit, 8-Bit Addressable Latch
Manufacturer
NSC [National Semiconductor]
Datasheet
C 1995 National Semiconductor Corporation
CD4723BM CD4723BC Dual 4-Bit Addressable Latch
CD4724BM CD4724BC 8-Bit Addressable Latch
General Description
The CD4723B is a dual 4-bit addressable latch with com-
mon control inputs including two address inputs (A0 A1)
an active low enable input (E) and an active high clear input
(CL) Each latch has a data input (D) and four outputs (Q0–
Q3) The CD4724B is an 8-bit addressable latch with three
address inputs (A0–A2) an active low enable input (E) ac-
tive high clear input (CL) a data input (D) and eight outputs
(Q0 –Q7)
Data is entered into a particular bit in the latch when that is
addressed by the address inputs and the enable (E) is low
Data entry is inhibited when enable (E) is high
When clear (CL) and enable (E) are high all outputs are low
When clear (CL) is high and enable (E) is low the channel
demultiplexing occurs The bit that is addressed has an ac-
tive output which follows the data input while all unad-
dressed bits are held low When operating in the address-
Connection Diagrams
Truth Table
Dual-In-Line Package
E
H
H
L
L
CD4723B
Top View
CL
H
H
L
L
TL F 6003–1
TL F 6003
Follows Data
Hold Previous Data
Follows Data
Reset to ‘0’’
Addressed
Latch
Dual-In-Line Package
Mode Selection
CD4724B
Top View
Holds Previous Data
Holds Previous Data
Reset to ‘‘0’’
Reset to ‘‘0’’
able latch mode (E
bit of the address could impose a transient wrong address
Therefore this should only be done while in the memory
mode (E
Features
Y
Y
Y
Y
Y
Y
Y
Y
Unaddressed
compatibility
Wide supply voltage range
High noise immunity
Low power TTL
Serial to parallel capability
Storage register capability
Random (addressable) data entry
Active high demultiplexing capability
Common active high clear
Latch
TL F 6003 – 2
e
high CL
e
e
CL
low)
Order Number CD4723B or
e
Addressable Latch
Memory
Demultiplexer
Clear
low) changing more than one
Mode
CD4724B
fan out of 2 driving 74L
RRD-B30M105 Printed in U S A
or 1 driving 74LS
0 45 V
February 1988
3 0V to 15V
DD
(typ )

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CD4723BMN Summary of contents

Page 1

CD4723BM CD4723BC Dual 4-Bit Addressable Latch CD4724BM CD4724BC 8-Bit Addressable Latch General Description The CD4723B is a dual 4-bit addressable latch with com- mon control inputs including two address inputs (A0 A1) an active low enable input (E) and an ...

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Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications DC Supply Voltage ( Input Voltage ( Storage ...

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DC Electrical Characteristics Symbol Parameter Conditions I Quiescent Device Current V 10V 15V Low Level Output Voltage ...

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AC Electrical Characteristics 200k Input Symbol Parameter t Propagation Delay PHL tPLH Data to Output t t Propagation Delay PLH PHL Enable to Output t Propagation ...

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Logic Diagrams CD4723B 6003 – 3 ...

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Logic Diagrams (Continued) CD4724B 6003 – 4 ...

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Switching Time Waveforms 7 ...

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... Physical Dimensions inches (millimeters) Order Number CD4723BMJ CD4723BCJ CD4724BMJ or CD4724BCJ Order Number CD4723BMN CD4723BCN CD4724BMN or CD4724BCN LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL ...

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