8.4 Device Functional Modes

The Function Tableand Latch Selection Table below list the functional modes of the SN74HCS259-Q1.

Table 8-1. Function Table

INPUTS(1)

OUTPUT OF

ADDRESSED

LATCH(2)

EACH OTHER

OUTPUT(2)

FUNCTION

CLR

G

H

L

D

Addressable

latch

H

H

Memory

L

L

D

L

8-line

demultiplexer

L

H

L

L

Clear

(1)

H = High voltage level, L = Low voltage level

(2)

logic value

Table 8-2. Latch Selection Table

SELECT INPUTS(1)

LATCH

ADDRESSED

S2

S1

S0

L

L

L

0

L

L

H

1

L

H

L

2

L

H

H

3

H

L

L

4

H

L

H

5

H

H

L

6

H

H

H

7

(1)

H = High Voltage Level, L = Low Voltage Level

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SN74HCS259-Q1

SCLS815A – JULY 2020 – REVISED DECEMBER 2021

Copyright © 2021 Texas Instruments Incorporated

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