HCF4099B datasheet(2/14 Pages) STMICROELECTRONICS

部件名	HCF4099B

功能描述	8 BIT ADDRESSABLE LATCH

PDF	14 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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2 / 14 page

HCF4099B

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IINPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION

FUNCTIONAL DIAGRAM

TRUTH TABLE

D: The level at the data input ; Qi0 The level before the indicated steady state input conditions were established, (i=0, 1,...7)

PIN No

SYMBOL

NAME AND FUNCTION

5, 6, 7

A0 to A2

Address Inputs

9, 10, 11, 12,

13, 14, 15, 1

Q0 to Q7

Latch Outputs

DATA

Data Inputs

RESET

Reset Input

WRITE

DISABLE

Write Disable Input

VSS

Negative Supply Voltage

VDD

Positive Supply Voltage

SELECT INPUTS

LATCH ADDRESSED

CBA

LLL

LHL

HLH

HHH

INPUTS

OUTPUTS OF

ADDRESSED

LATCH

EACH OTHER

OUTPUT

FUNCTION

WRITE DISABLE

RESET

Qi0

ADDRESSABLE LATCH

Qi0

MEMORY

DEMULTIPLEXER

CLEAR ALL BITS TO "0"

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