SN54ALS161B, SN54ALS162B, SN54ALS163B, SN54AS161, SN54AS163

SN74ALS161B, SN74ALS163B, SN74AS161, SN74AS163

SYNCHRONOUS 4-BIT DECADE AND BINARY COUNTERS

SDAS276A – DECEMBER 1994 – REVISED JULY 2000

9

POST OFFICE BOX 655303

recommended operating conditions

SN54AS161

SN54AS163

SN74AS161

SN74AS163

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

0.8

0.8

V

IOH

High-level output current

–2

–2

mA

IOL

Low-level output current

20

20

mA

TA

Operating free-air temperature

–55

125

0

70

°C

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

otherwise noted)

PARAMETER

TEST CONDITIONS

SN54AS161

SN54AS163

SN74AS161

SN74AS163

UNIT

MIN

TYP†

MAX

MIN

TYP†

MAX

VIK

VCC = 4.5 V,

II = – 18 mA

– 1.2

– 1.2

V

VOH

VCC = 4.5 V to 5.5 V,

IOH = – 2 mA

VCC –2

VCC –2

V

VOL

VCC = 4.5 V,

IOL = 20 mA

0.25

0.5

0.25

0.5

V

LOAD

0.3

0.3

II

ENT

VCC = 5.5 V,

VI = 7 V

0.2

0.2

mA

All others

0.1

0.1

LOAD

60

60

IIH

ENT

VCC = 5.5 V,

VI = 2.7 V

40

40

µA

All others

20

20

LOAD

–1.5

–1.5

IIL

ENT

VCC = 5.5 V,

VI = 0.4 V

–1

–1

mA

All others

– 0.5

– 0.5

IO‡

VCC = 5.5 V,

VO = 2.25 V

–30

–112

–30

–112

mA

ICC

VCC = 5.5 V

35

53

35

53

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.