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Partname:SN54LS221W
Description:DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS
Manufacturer:Texas Instruments
Datasheet:PDF (621K).
Click here to download *)

The '221 and 'LS221 devices are dual multivibrators with performance characteristics virtually identical to those of the '121 devices. Each multivibrator features a negative-transitiontriggered input and a positive-transition-triggered input, either of which can be used as an inhibit input.

Click here to download SN54LS221W Datasheet
Click here to download SN54LS221W Datasheet
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