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HD74LS221

Part Number	HD74LS221
Manufacturer	Renesas
Description	Dual Monostable Multivibrators
Published	Dec 4, 2017
Detailed Description	HD74LS221 Dual Monostable Multivibrators REJ03D0458–0300 Rev.3.00 Jul.15.2005 This multivibrator features a negative-...
Datasheet	HD74LS221 PDF File

Overview

HD74LS221 Dual Monostable Multivibrators REJ03D0458–0300 Rev.
3.
00 Jul.
15.
2005 This multivibrator features a negative-transition-triggered input and a positive-transition-triggered input either of which can be used as an inhibit input.
Pulse triggering occurs at a particular voltage level and is not directly related to the transition time of the input pulse.
Schmitt-trigger input circuitry (TTL hysteresis) for B input allows jitter-free triggering from inputs with transition rates as slow as 1 V/s, providing the circuit with excellent noise immunity of typically 1.
2 V.
A high immunity to VCC noise of typically 1.
5 V is also provided by internal latching circuitry.
Once fired, the outputs a...

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