74LS12 datasheet(1/12 Pages) ONSEMI

Part #	74LS12

Description	LOW POWER SCHOTTKY

PDF	12 Pages

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Manufacturer	ONSEMI [ON Semiconductor]

Direct Link	http://www.onsemi.com

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December, 1999 – Rev. 6

1

Publication Order Number:

SN74LS122/D

SN74LS122 SN74LS123

Retriggerable Monostable

Multivibrators

These dc triggered multivibrators feature pulse width control by

three methods. The basic pulse width is programmed by selection of

external resistance and capacitance values. The LS122 has an internal

timing resistor that allows the circuits to be used with only an external

capacitor. Once triggered, the basic pulse width may be extended by

retriggering the gated low-level-active (A) or high-level-active (B)

inputs, or be reduced by use of the overriding clear.

• Overriding Clear Terminates Output Pulse

• Compensated for V

CC and Temperature Variations

• DC Triggered from Active-High or Active-Low Gated Logic Inputs

• Retriggerable for Very Long Output Pulses, up to 100% Duty Cycle

• Internal Timing Resistors on LS122

GUARANTEED OPERATING RANGES

Symbol

Parameter

Min

Typ

Max

Unit

VCC

Supply Voltage

4.75

5.0

5.25

V

TA

Operating Ambient

Temperature Range

0

25

70

°C

IOH

Output Current – High

– 0.4

mA

IOL

Output Current – Low

8.0

mA

Rext

External Timing Resistance

5.0

260

k

W

Cext

External Capacitance

No Restriction

Rext/Cext

Wiring Capacitance at

Rext/Cext Terminal

50

pF

LOW POWER SCHOTTKY

Device

Package

Shipping

ORDERING INFORMATION

SN74LS123N

16 Pin DIP

SN74LS123D

16 Pin

SOIC

D SUFFIX

CASE 751A

http://onsemi.com

PLASTIC

N SUFFIX

CASE 646

14

1

14

1

SOIC

D SUFFIX

CASE 751B

PLASTIC

N SUFFIX

CASE 648

16

1

16

1

SN74LS122N

14 Pin DIP

2000 Units/Box

SN74LS122D

14 Pin

2500/Tape & Reel

2000 Units/Box

2500/Tape & Reel

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