SN74ALS166

PARALLEL-LOAD 8-BIT SHIFT REGISTER

SDAS156D – APRIL 1982 – REVISED AUGUST 2000

4

POST OFFICE BOX 655303

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

VIK

VCC = 4.5 V,

II = –18 mA

–1.5

V

VOH

VCC = 4.5 V to 5.5 V,

IOH = –0.4 mA

VCC–2

V

VOL

VCC =4 5V

IOL = 4 mA

0.25

0.4

V

VOL

VCC = 4.5 V

IOL = 8 mA

0.35

0.5

V

II

VCC = 5.5 V,

VI = 7 V

0.1

mA

IIH

VCC = 5.5 V,

VI = 2.7 V

20

µA

IIL

VCC = 5.5 V,

VI = 0.4 V

–0.1

mA

IO‡

VCC = 5.5 V,

VO = 2.25 V

–30

–112

mA

ICC

VCC = 5.5 V,

See Note 2

14

24

mA

† All typical values are at VCC = 5 V, TA = 25°C.

‡ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.

NOTE 2: With 4.5 V applied to SER and all other inputs, except the clock, grounded, ICC is measured after a clock transition from 0 V to 4.5 V.

timing requirements over recommended operating free-air temperature range (unless otherwise

noted)

MIN

MAX

UNIT

fclock

Clock frequency

45

MHz

CLR low

9

tw

Pulse duration

CLK high

10

ns

CLK low

10

↑

SH/LD

16

tsu

Setup time before CLK

↑

Data

7

ns

CLR inactive

11

th

Hold time, data after CLK

↑

3

ns

switching characteristics over recommended operating conditions (unless otherwise noted)

(see Figure 1)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

MIN

TYP†

MAX

UNIT

fmax

45

MHz

tPHL

CLR

QH

4

9

14

ns

tPLH

CLK

QH

2

7

12

ns

tPHL

CLK

QH

2

9

13

ns

† All typical values are at VCC = 5 V, TA = 25°C.