SN74LS122 Datasheet, PDF (1/12 Pages) ON Semiconductor – LOW POWER SCHOTTKY

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
V_CC
Supply Voltage
T_A
Operating Ambient
Temperature Range
4.75 5.0 5.25
V
0
25
70
°C
I_OH
Output Current – High
– 0.4 mA
I_OL
Output Current – Low
R_ext
External Timing Resistance 5.0
8.0
mA
260 kW
C_ext
External Capacitance
No Restriction
R_ext/C_ext Wiring Capacitance at
R_ext/C_ext Terminal
50
pF
http://onsemi.com
LOW POWER SCHOTTKY
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CASE 646
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SOIC
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CASE 751A
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CASE 648
© Semiconductor Components Industries, LLC, 1999
December, 1999 – Rev. 6
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CASE 751B
ORDERING INFORMATION
Device
Package
Shipping
SN74LS122N 14 Pin DIP 2000 Units/Box
SN74LS122D
14 Pin
2500/Tape & Reel
SN74LS123N 16 Pin DIP 2000 Units/Box
SN74LS123D
16 Pin
2500/Tape & Reel
1
Publication Order Number:
SN74LS122/D