CD4099BCN

CD4099BCN Datasheet

CD4099BC 8-Bit Addressable Latch

Part	Datasheet
CD4099BCN	CD4099BCN (pdf)

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CD4099BC 8-Bit Addressable Latch CD4099BC 8-Bit Addressable Latch The CD4099BC is an 8-bit addressable latch with three address inputs an active low enable input E , active high clear input CL , a data input D , and eight outputs 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 active output which follows the data input while all unaddressed bits are held LOW. When operating in the addressable latch mode E = CL = 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 = HIGH, CL = LOW . s Wide supply voltage range 3.0V to 15V s High noise immunity VDD typ. s Low power TTL fan out of 2 driving 74L compatibility or 1 driving 74LS s Serial to parallel capability s Storage register capability s Random addressable data entry s Active high demultiplexing capability s Common active high clear Ordering Code: Order Number Package Number Package Description CD4099BCN N16E 16-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide Connection Diagram Truth Table Top View Mode Selection Addressed Unaddressed Mode Latch Latch L Follows Data Holds Previous Data Addressable Latch H L Holds Previous Data Holds Previous Data Memory L H Follows Data Reset to “0” Demultiplexer H Reset to “0” Reset to “0” Clear 2002 Fairchild Semiconductor Corporation DS005984 CD4099BC Logic Diagram CD4099BC Absolute Maximum Ratings Note 1 Note 2 DC Supply Voltage VDD Input Voltage VIN Storage Temperature Range TS Power Dissipation PD Dual-In-Line Small Outline Lead Temperature TL Soldering, 10 seconds to +18 VDC to VDD VDC −65°C to +150°C 700 mW 500 mW 260°C Recommended Operating Conditions Note 2 DC Supply Voltage VDD

PDF Datasheet Preview

CD4099BC 8-Bit Addressable Latch

CD4099BC 8-Bit Addressable Latch

The CD4099BC is an 8-bit addressable latch with three address inputs an active low enable input E , active high clear input CL , a data input D , and eight outputs

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 active output which follows the data input while all unaddressed bits are held LOW. When operating in the addressable latch mode E = CL = 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 = HIGH, CL = LOW .
s Wide supply voltage range 3.0V to 15V s High noise immunity VDD typ. s Low power TTL fan out of 2 driving 74L
compatibility or 1 driving 74LS s Serial to parallel capability s Storage register capability s Random addressable data entry s Active high demultiplexing capability s Common active high clear
Ordering Code:

Order Number Package Number

Package Description

CD4099BCN

N16E
16-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide

Connection Diagram

Truth Table

Top View

Mode Selection

Addressed

Unaddressed

Mode

Latch

Latch

L Follows Data

Holds Previous Data Addressable Latch

H L Holds Previous Data Holds Previous Data Memory

L H Follows Data

Reset to “0”

Demultiplexer

H Reset to “0”

Reset to “0”

Clear
2002 Fairchild Semiconductor Corporation DS005984

CD4099BC

Logic Diagram

CD4099BC

Absolute Maximum Ratings Note 1

Note 2

DC Supply Voltage VDD Input Voltage VIN Storage Temperature

Range TS Power Dissipation PD

Dual-In-Line

Small Outline Lead Temperature TL

Soldering, 10 seconds
to +18 VDC to VDD VDC
−65°C to +150°C
700 mW 500 mW
260°C

Recommended Operating Conditions Note 2

DC Supply Voltage VDD

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Datasheet ID: CD4099BCN 513581