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SN74LS122

ON Semiconductor
Part Number SN74LS122
Manufacturer ON Semiconductor
Description Retriggerable Monostable Multivibrator
Published May 20, 2005
Detailed Description SN74LS122, SN74LS123 Retriggerable Monostable Multivibrators These dc triggered multivibrators feature pulse width cont...
Datasheet PDF File SN74LS122 PDF File

SN74LS122
SN74LS122

Overview
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 VCC 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 TA Operating Ambient Temperature Range 4.
75 5.
0 5.
25 V 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 kW Cext External Capacitance No Restriction Rext/Cext Wiring Capacitance at Rext/Cext Terminal 50 pF http://onsemi.
com LOW POWER SCHOTTKY 14 1 14 1 16 1 16 1 16 1 PLASTIC N SUFFIX CASE 646 SOIC D SUFFIX CASE 751A PLASTIC N SUFFIX CASE 648 SOIC D SUFFIX CASE 751B SOEIAJ M SUFFIX CASE 966 ORDERING INFORMATION Device Package Shipping SN74LS122N 14 Pin DIP 2000 Units/Box SN74LS122D SOIC−14 55 Units/Rail SN74LS122DR2 SOIC−14 2500/Tape & Reel SN74LS123N 16 Pin DIP 2000 Units/Box SN74LS123D SOIC−16 38 Units/Rail SN74LS123DR2 SOIC−16 2500/Tape & Reel SN74LS123M SOEIAJ−16 See Note 1 SN74LS123MEL SOEIAJ−16 See Note 1 1.
For ordering information on the EIAJ version of the SOIC package, please contact your local ON Semiconductor representative.
© Semiconductor Components Industries, LLC, 2006 1 June, 2006 − Rev.
8 Publication Order Number: SN74LS122/D SN74LS122, SN74LS123 SN74LS123 (TOP VIEW) (...


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