4.4 Electrical Characteristics

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

PARAMETER

TEST CONDITIONS(1)

VCC

TA = 25°C

SN54HC157

SN74HC157

UNIT

MIN

TYP

MAX

MIN

MAX

MIN

MAX

VOH

IOH = −20 μA

2 V

1.9

1.998

1.9

1.9

V

4.5 V

4.4

4.499

4.4

4.4

6 V

5.9

5.999

5.9

5.9

IOH = −6 mA

4.5 V

3.98

4.3

3.7

3.7

IOH = −7.8 mA

6 V

5.48

5.8

5.2

5.2

VOL

IOL = 20 μA

2 V

0.002

0.1

0.1

0.1

V

4.5 V

0.001

0.1

0.1

0.1

6 V

0.001

0.1

0.1

0.1

IOL = 6 mA

4.5 V

0.17

0.26

0.4

0.4

IOL = 7.8 mA

6 V

0.15

0.26

0.4

0.4

II

VI = VCC or 0

6 V

±0.1

±100

±1000

±1000

nA

ICC

VI = VCC or 0 IO = 0

6 V

8

160

160

μA

Ci

2 V to 6 V

3

10

10

10

pF

(1)

VI = VIH or VIL, unless otherwise noted.

4.5 Switching Characteristics

over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (See Mechanical, Packaging,

and Orderable Information

PARAMETER

FROM

(INPUT)

TO (OUTPUT)

VCC

(V)

TA = 25°C

SN54HC157

SN74HC157

UNIT

MIN

TYP

MAX

MIN

MAX

MIN

MAX

tpd

Propagation delay

A or B

Y

2

63

125

190

190

ns

4.5

13

25

38

38

6

11

21

32

32

A/B

Y

2

67

125

190

190

ns

4.5

18

25

38

38

6

14

21

32

32

G

Y

2

59

115

170

170

ns

4.5

16

23

34

34

6

13

20

29

29

tt

Transition time

Y

2

28

60

90

90

ns

4.5

8

12

18

18

6

6

10

15

15

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SN54HC157, SN74HC157

SCLS113F – DECEMBER 1982 – REVISED FEBRUARY 2025

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