5.6 Timing Characteristics (continued)

over recommended operating free-air temperature range (unless otherwise noted)

PARAMETER

DESCRIPTION

CONDITION

VCC

-40°C to 125°C

UNIT

MIN

MAX

tSU

Setup time

Data before CLK↑

2.5 V ± 0.2 V

4.5

ns

tSU

Setup time

CLR inactive before CLK↑

2.5 V ± 0.2 V

5.9

ns

tH

Hold time

SER data after CLK↑

2.5 V ± 0.2 V

0.5

ns

tH

Hold time

Parallel data after SH/LD↓

2.5 V ± 0.2 V

0

ns

tH

Hold time

SH/LD high after CLK↑

2.5 V ± 0.2 V

0.1

ns

tH

Hold time

CLK INH high after CLK↑

2.5 V ± 0.2 V

0.3

ns

tH

Hold time

Data after CLK↑

2.5 V ± 0.2 V

1.5

ns

tW

Pulse duration

CLR low

3.3 V ± 0.3 V

4.3

ns

tW

Pulse duration

SH/LD low

3.3 V ± 0.3 V

4.3

ns

tW

Pulse duration

CLK

3.3 V ± 0.3 V

4.3

ns

tSU

Setup time

SH/LD high before CLK↑

3.3 V ± 0.3 V

3.5

ns

tSU

Setup time

SER before CLK↑

3.3 V ± 0.3 V

4

ns

tSU

Setup time

CLK INH before CLK↑

3.3 V ± 0.3 V

1

ns

tSU

Setup time

Data before CLK↑

3.3 V ± 0.3 V

2.9

ns

tSU

Setup time

CLR inactive before CLK↑

3.3 V ± 0.3 V

4

ns

tH

Hold time

SER data after CLK↑

3.3 V ± 0.3 V

0.5

ns

tH

Hold time

Parallel data after SH/LD↓

3.3 V ± 0.3 V

0

ns

tH

Hold time

SH/LD high after CLK↑

3.3 V ± 0.3 V

0.2

ns

tH

Hold time

CLK INH high after CLK↑

3.3 V ± 0.3 V

0.5

ns

tH

Hold time

Data after CLK↑

3.3 V ± 0.3 V

1.5

ns

SH/LD

CLK

CLK INH

SER

VCC

H

QH

A, C, E, G held LOW

B, D, F held HIGH

INHIBIT

LOAD

SHIFT

SHIFT

STARTUP

CLR

CLEAR

Figure 5-1. Timing Diagram

www.ti.com

SN74LVC166A

SCLSA15 – MAY 2024

Copyright © 2024 Texas Instruments Incorporated

Submit Document Feedback

7

Product Folder Links: SN74LVC166A