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Número de pieza | CD4099BC | |
Descripción | 8-Bit Addressable Latch | |
Fabricantes | National Semiconductor | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de CD4099BC (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
No Preview Available ! February 1988
CD4099BM CD4099BC 8-Bit Addressable Latch
General Description
The CD4099B is an 8-bit addressable latch with three ad-
dress inputs (A0–A2) an active low enable input (E) active
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 bit
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-
able latch mode (E e CL e low) changing more than one
bit of the address could impose a transient wrong address
Therefore this should only be done while in the memory
mode (E e high CL e low)
Features
Y Wide supply voltage range
3 0V to 15V
Y High noise immunity
Y Low power TTL
compatibility
0 45 VDD (typ )
fan out of 2 driving 74L
or 1 driving 74LS
Y Serial to parallel capability
Y Storage register capability
Y Random (addressable) data entry
Y Active high demultiplexing capability
Y Common active high clear
Connection Diagram
CD4099B
Dual-In-Line Package
Order Number CD4099B
Top View
TL F 5984 – 1
Truth Table
E CL
LL
HL
LH
HH
Mode Selection
Addressed
Latch
Unaddressed
Latch
Follows Data
Holds Previous Data
Follows Data
Reset to ‘‘0’’
Holds Previous Data
Holds Previous Data
Reset to ‘‘0’’
Reset to ‘‘0’’
Mode
Addressable Latch
Memory
Demultiplexer
Clear
C1995 National Semiconductor Corporation TL F 5984
RRD-B30M105 Printed in U S A
1 page Switching Time Waveforms
Physical Dimensions inches (millimeters)
TL F 5984 – 3
Ceramic Dual-In-Line Package (J)
Order Number CD4099BMJ or CD4099BCJ
NS Package Number J16A
5
5 Page |
Páginas | Total 6 Páginas | |
PDF Descargar | [ Datasheet CD4099BC.PDF ] |
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