SN54ALS161B, SN54ALS162B, SN54ALS163B, SN54AS161, SN54AS163

SN74ALS161B, SN74ALS163B, SN74AS161, SN74AS163

SYNCHRONOUS 4-BIT DECADE AND BINARY COUNTERS

SDAS276 – DECEMBER 1994

7

POST OFFICE BOX 655303

7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SN54ALS163B

– 55

°C to 125°C

. . . . . . . . . . . . . . . . . . . . . . . . . . .

SN74ALS161B, SN74ALS163B

0

°C to 70°C

. . . . . . . . . . . . . . . . .

Storage temperature range

– 65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

recommended operating conditions

SN54ALS161B

SN54ALS162B

SN54ALS163B

SN74ALS161B

SN74ALS163B

UNIT

MIN

NOM

MAX

MIN

NOM

MAX

VCC

Supply voltage

4.5

5

5.5

4.5

5

5.5

V

VIH

High-level input voltage

2

2

V

VIL

Low-level input voltage

0.7

0.8

V

IOH

High-level output current

– 0.4

– 0.4

mA

IOL

Low-level output current

4

8

mA

fclock

Clock frequency

0

22

0

40

MHz

t

Pulse duration

CLR high or low

20

12.5

ns

tw

Pulse duration

′ALS161B

CLR low

20

15

ns

A, B, C, D

50

15

LOAD

20

15

St

ti

′ALS161B

ENP ENT

25

15

tsu

Setup time

before CLK

↑

SN54ALS162B,

′ALS163B

ENP, ENT

20

15

ns

before CLK

↑

′ALS161B

CLR inactive

10

10

SN54ALS162B

′ALS163B

CLR low

20

15

SN54ALS162B,

′ALS163B

CLR high

20

10

th

Hold time, all synchronous inputs after CLK

↑

0

0

ns

TA

Operating free-air temperature

–55

125

0

70

°C