54LS190J 查看數據表（PDF） - Motorola => Freescale

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54LS190J

PRESETTABLE BCD/DECADE PRESETTABLE 4-BIT BINARY UP/DOWN COUNTERS

Motorola => Freescale 

SN54/74LS190 • SN54/74LS191

GUARANTEED OPERATING RANGES

Symbol

Parameter

VCC

Supply Voltage

TA

Operating Ambient Temperature Range

IOH

Output Current — High

IOL

Output Current — Low

Min

Typ

Max

Unit

54

4.5

5.0

5.5

V

74

4.75

5.0

5.25

54

– 55

25

125

°C

74

0

25

70

54, 74

– 0.4

mA

54

4.0

mA

74

8.0

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

V

All Inputs

54

VIL

Input LOW Voltage

74

0.7

Guaranteed Input LOW Voltage for

0.8

V

All Inputs

VIK

VOH

Input Clamp Diode Voltage

54

Output HIGH Voltage

74

– 0.65 – 1.5

2.5

3.5

2.7

3.5

V

VCC = MIN, IIN = – 18 mA

V

VCC = MIN, IOH = MAX, VIN = VIH

V

or VIL per Truth Table

VOL

Output LOW Voltage

54, 74

74

0.25 0.4

0.35 0.5

V

IOL = 4.0 mA

VCC = VCC MIN,

VIN = VIL or VIH

V

IOL = 8.0 mA

per Truth Table

Input HIGH Current

Other Inputs

IIH

CE

Other Inputs

CE

20

µA VCC = MAX, VIN = 2.7 V

60

0.1

0.3

mA VCC = MAX, VIN = 7.0 V

Input LOW Current

IIL

Other Inputs

CE

– 0.4 mA VCC = MAX, VIN = 0.4 V

– 1.2

IOS

Short Circuit Current (Note 1)

– 20

– 100 mA VCC = MAX

ICC

Power Supply Current

35

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

mA VCC = MAX

FAST AND LS TTL DATA

5-345

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