74LS151 查看數據表（PDF） - ON Semiconductor

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74LS151

8-Input Multiplexer

ON Semiconductor 

SN74LS151

DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)

Limits

Symbol

Parameter

Min Typ Max Unit

Test Conditions

VIH

Input HIGH Voltage

2.0

V

Guaranteed Input HIGH Voltage for

All Inputs

VIL

Input LOW Voltage

0.8

V

Guaranteed Input LOW Voltage for

All Inputs

VIK

Input Clamp Diode Voltage

– 0.65 – 1.5

V

VCC = MIN, IIN = – 18 mA

VOH

Output HIGH Voltage

2.7

3.5

V

VCC = MIN, IOH = MAX, VIN = VIH

or VIL per Truth Table

VOL

Output LOW Voltage

0.25 0.4

0.35 0.5

V

IOL = 4.0 mA

V

IOL = 8.0 mA

VCC = VCC MIN,

VIN = VIL or VIH

per Truth Table

IIH

Input HIGH Current

IIL

Input LOW Current

IOS

Short Circuit Current (Note 1)

– 20

20

µA VCC = MAX, VIN = 2.7 V

0.1

mA VCC = MAX, VIN = 7.0 V

– 0.4 mA VCC = MAX, VIN = 0.4 V

– 100 mA VCC = MAX

ICC

Power Supply Current

10

mA VCC = MAX

Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.

AC CHARACTERISTICS (TA = 25°C)

Symbol

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

Parameter

Propagation Delay

Select to Output Z

Propagation Delay

Select to Output Z

Propagation Delay

Enable to Output Z

Propagation Delay

Enable to Output Z

Propagation Delay

Data to Output Z

Propagation Delay

Data to Output Z

Limits

Min Typ Max Unit

27

43

18

30

ns

14

23

20

32

ns

26

42

20

32

ns

15

18

24

30

ns

20

32

16

26

ns

13

12

21

20

ns

Test Conditions

VCC = 5.0 V

CL = 15 pF

AC WAVEFORMS

VIN

VOUT

1.3 V

tPHL

1.3 V

1.3 V

tPLH

1.3 V

Figure 1.

VIN

VOUT

1.3 V

tPHL tPLH

1.3 V

1.3 V

1.3 V

Figure 2.

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