5-5

FAST AND LS TTL DATA

SN54/74LS90

• SN54/74LS92 • SN54/74LS93

GUARANTEED OPERATING RANGES

Symbol

Parameter

Min

Typ

Max

Unit

VCC

Supply Voltage

54

74

4.5

4.75

5.0

5.0

5.5

5.25

V

TA

Operating Ambient Temperature Range

54

74

–55

0

25

25

125

70

°C

IOH

Output Current — High

54, 74

– 0.4

mA

IOL

Output Current — Low

54

74

4.0

8.0

mA

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

VOH

Output HIGH Voltage

54

2.5

3.5

V

VCC = MIN, IOH = MAX, VIN = VIH

VOH

Output HIGH Voltage

74

2.7

3.5

V

CC

, OH

,

IN

IH

or VIL per Truth Table

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

MS, MR

CP0

CP1 (LS90, LS92)

CP1 (LS93)

– 0.4

– 2.4

– 3.2

– 1.6

mA

VCC = MAX, VIN = 0.4 V

IOS

Short Circuit Current (Note 1)

–20

–100

mA

VCC = MAX

ICC

Power Supply Current

15

mA

VCC = MAX

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