74LS147 datasheet(4/8 Pages) ONSEMI

4 / 8 page

SN74LS147 SN74LS148

http://onsemi.com

DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)

Limits

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions

VIH

Input HIGH Voltage

2.0

Guaranteed Input HIGH Voltage for

All Inputs

VIL

Input LOW Voltage

0.8

Guaranteed Input LOW Voltage for

All Inputs

VIK

Input Clamp Diode Voltage

– 0.65

– 1.5

VCC = MIN, IIN = – 18 mA

VOH

Output HIGH Voltage

2.7

3.5

VCC = MIN, IOH = MAX, VIN = VIH

or VIL per Truth Table

Output LOW Voltage

0.25

0.4

IOL = 4.0 mA

VCC = VCC MIN,

VIN =VIL or VIH

VOL

Output LOW Voltage

0.35

0.5

IOL = 8.0 mA

VIN = VIL or VIH

per Truth Table

IIH

Input HIGH Current

All Others

Inputs 1 – 7 (LS148)

µA

VCC = MAX, VIN = 2.7 V

All Others

Inputs 1 – 7 (LS148)

0.1

0.2

VCC = MAX, VIN = 7.0 V

IIL

Input LOW Current

All Others

Inputs 1 – 7 (LS148)

– 0.4

– 0.8

VCC = MAX, VIN = 0.4 V

IOS

Short Circuit Current (Note 1)

–20

– 100

VCC = MAX

ICCH

Power Supply Current Output HIGH

VCC = MAX, All Inputs = 4.5 V

ICCL

Output LOW

VCC = MAX, Inputs 7 & E1 = GND

All Other Inputs = 4.5 V

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

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