SN74LS155D datasheet(4/4 Pages) MOTOROLA

No. de pieza	SN74LS155D

Descripción Electrónicos	DUAL 1-OF-4 DECODER/ DEMULTIPLEXER

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Fabricante Electrónico	MOTOROLA [Motorola, Inc]

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5-4

FAST AND LS TTL DATA

SN54/74LS156

GUARANTEED OPERATING RANGES

Symbol

Parameter

Min

Typ

Max

Unit

VCC

Supply Voltage

54

74

4.5

4.75

5.0

5.5

5.25

V

TA

Operating Ambient Temperature Range

54

74

–55

0

25

125

70

°C

VOH

Output Voltage — High

54, 74

5.5

V

IOL

Output Current — Low

54

74

4.0

8.0

mA

DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)

Sb l

P

Limits

Ui

T

C

di i

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

54

0.7

V

Guaranteed Input LOW Voltage for

VIL

Input LOW Voltage

74

0.8

V

pg

All Inputs

VIK

Input Clamp Diode Voltage

– 0.65

– 1.5

V

VCC = MIN, IIN = – 18 mA

IOH

Output HIGH Current

54, 74

100

µA

VCC = MIN, VOH = MAX

VOL

Output LOW Voltage

54, 74

0.25

0.4

V

IOL = 4.0 mA

VCC = VCC MIN,

VIN =VIL or VIH

VOL

Output LOW Voltage

74

0.35

0.5

V

IOL = 8.0 mA

VIN = VIL or VIH

per Truth Table

IIH

Input HIGH Current

20

µA

VCC = MAX, VIN = 2.7 V

IIH

Input HIGH Current

0.1

mA

VCC = MAX, VIN = 7.0 V

IIL

Input LOW Current

– 0.4

mA

VCC = MAX, VIN = 0.4 V

ICC

Power Supply Current

10

mA

VCC = MAX

AC CHARACTERISTICS (TA = 25°C)

Sb l

P

Limits

Ui

T

C

di i

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions

tPLH

tPHL

Propagation Delay

Address, Ea or Eb to Output

25

34

40

51

ns

Figure 1

V5 0 V

tPLH

tPHL

Propagation Delay

Address to Output

31

34

46

51

ns

Figure 2

VCC = 5.0 V

CL = 15 pF

RL = 2.0 kΩ

tPLH

tPHL

Propagation Delay

Ea to Output

32

48

ns

Figure 1

RL = 2.0 kΩ

AC WAVEFORMS

Figure 1

Figure 2

VIN

VOUT

1.3 V

tPHL

1.3 V

tPLH

VIN

VOUT

1.3 V

tPHL

1.3 V

tPLH

1.3 V

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