5-248

FAST AND LS TTL DATA

SN54/74LS147

• SN54/74LS148 • SN54/74LS748

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

Symbol

Parameter

Limits

Unit

Test Conditions

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

All Inputs

VIL

Input LOW Voltage

74

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

54

2.5

3.5

V

VCC = MIN, IOH = MAX, VIN = VIH

or VIL per Truth Table

VOH

Output HIGH Voltage

74

2.7

3.5

V

VCC = MIN, IOH = MAX, VIN = VIH

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

per Truth Table

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

All Others

Input 0 (LS748)

Inputs 1 – 7 (LS148)

Inputs 1 – 7 (LS748)

20

40

40

60

µA

VCC = MAX, VIN = 2.7 V

IIH

All Others

Input 0 (LS748)

Inputs 1 – 7 (LS148)

Inputs 1 – 7 (LS748)

0.1

0.2

0.2

0.3

mA

VCC = MAX, VIN = 7.0 V

IIL

Input LOW Current

All Others

Input 0 (LS748)

Inputs 1 – 7 (LS148)

Inputs 1 – 7 (LS748)

– 0.4

– 0.8

– 0.8

– 1.2

mA

VCC = MAX, VIN = 0.4 V

IOS

Short Circuit Current (Note 1)

– 20

– 100

mA

VCC = MAX

ICCH

Power Supply Current Output HIGH

17

mA

VCC = MAX, All Inputs = 4.5 V

ICCL

Output LOW

20

mA

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.