SN74AS298A

QUADRUPLE 2-INPUT MULTIPLEXER

WITH STORAGE

SDAS219B – DECEMBER 1983 – REVISED DECEMBER 1994

3

POST OFFICE BOX 655303

7 V

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

7 V

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

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

MIN

NOM

MAX

UNIT

VCC

Supply voltage

4.5

5

5.5

V

VIH

High-level input voltage

2

V

VIL

Low-level input voltage

0.8

V

IOH

High-level output current

–2

mA

IOL

Low-level output current

20

mA

TA

Operating free-air temperature

0

70

°C

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

– 1.2

V

VOH

VCC = 4.5 V to 5.5 V,

IOH = – 2 mA

VCC –2

V

VOL

VCC = 4.5 V,

IOL = 20 mA

0.35

0.5

V

II

VCC = 5.5 V,

VI = 7 V

0.1

mA

IIH

WS

VCC =5 5V

VI =2 7V

40

µA

IIH

All others

VCC = 5.5 V,

VI = 2.7 V

20

µA

IIL

WS

VCC =5 5V

VI =0 4V

– 0.75

mA

IIL

All others

VCC = 5.5 V,

VI = 0.4 V

– 0.5

mA

IO§

VCC = 5.5 V,

VO = 2.25 V

–30

–112

mA

ICCH

VCC = 5.5 V

21

33

mA

ICCL

VCC = 5.5 V

22

36

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.

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

noted)

MIN

MAX

UNIT

fclock

Clock frequency

0

62

MHz

tw

Pulse duration, CLK high or low

8

ns

t

Setup time before CLK

↓

Data

4.5

ns

tsu

Setup time before CLK

↓

WS

13

ns

th

Hold time after CLK

↓

Data

3.5

ns

th

Hold time after CLK

↓

WS

1

ns