SN74LS155 datasheet(3/4 Pages) ONSEMI

3 / 4 page

SN74LS155

http://onsemi.com

SN54/74LS156

GUARANTEED OPERATING RANGES

Symbol

Parameter

Min

Typ

Max

Unit

VCC

Supply Voltage

4.5

4.75

5.0

5.5

5.25

Operating Ambient Temperature Range

−55

125

°C

VOH

Output Voltage — High

54, 74

5.5

IOL

Output Current — Low

4.0

8.0

DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)

Symbol

Parameter

Limits

Unit

Test Conditions

Min

Typ

Max

VIH

Input HIGH Voltage

2.0

Guaranteed Input HIGH Voltage for

All Inputs

VIL

Input LOW Voltage

0.7

Guaranteed Input LOW Voltage for

All Inputs

0.8

VIK

Input Clamp Diode Voltage

−0.65

−1.5

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

IOL = 4.0 mA

VCC = VCC MIN,

VIN = VIL or VIH

per Truth Table

0.35

0.5

IOL = 8.0 mA

IIH

Input HIGH Current

μA

VCC = MAX, VIN = 2.7 V

0.1

VCC = MAX, VIN = 7.0 V

IIL

Input LOW Current

−0.4

VCC = MAX, VIN = 0.4 V

ICC

Power Supply Current

VCC = MAX

AC CHARACTERISTICS (TA = 25°C)

Symbol

Parameter

Limits

Unit

Test Conditions

Min

Typ

Max

tPLH

tPHL

Propagation Delay

Address, Ea or Eb to Output

Figure 1

VCC = 5.0 V

CL = 15 pF

RL = 2.0 kΩ

tPLH

tPHL

Propagation Delay

Address to Output

Figure 2

tPLH

tPHL

Propagation Delay

Ea to Output

Figure 1

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

SN74LS155 датащи(PDF) 3 Page - ON Semiconductor

SN74LS155 датащи(HTML) 3 Page - ON Semiconductor

Html Pages

1 2 3 4

датащи скачать

ссылки URL