SN74LS279 データシートの表示（PDF） - Motorola => Freescale

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SN74LS279

QUAD SET-RESET LATCH

Motorola => Freescale 

QUAD SET-RESET LATCH

SN54/74LS279

VCC S1 R Q S1 S2 R

Q

16 15 14 13 12 11 10 9

QUAD SET-RESET LATCH

LOW POWER SCHOTTKY

1

2

3

4

56

78

R S1 S2 Q R S1 Q GND

TRUTH TABLE

INPUT

S1 S2 R

L LL

L XH

X LH

HHL

H HH

OUTPUT

(Q)

h

H

H

L

No Change

L = LOW Voltage Level

H = HIGH Voltage Level

X = Don’t Care

h = The output is HIGH as long as

h = S1 or S2 is LOW. If all inputs go

h = HIGH simultaneously, the output

h = state is indeterminate; otherwise,

h = it follows the Truth Table

GUARANTEED OPERATING RANGES

Symbol

Parameter

VCC

Supply Voltage

TA

Operating Ambient Temperature Range

IOH

Output Current — High

IOL

Output Current — Low

16

1

16

1

16

1

J SUFFIX

CERAMIC

CASE 620-09

N SUFFIX

PLASTIC

CASE 648-08

D SUFFIX

SOIC

CASE 751B-03

ORDERING INFORMATION

SN54LSXXXJ

SN74LSXXXN

SN74LSXXXD

Ceramic

Plastic

SOIC

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

FAST AND LS TTL DATA

5-452

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