SN 74LS122 Monostable Multivibrator w/Schmitt Trigger input

4pk 74221N Dual Monostable Multivibrators w/ Schmitt-Trigger Inputs by Signetics

SN74221N Texas Instruments Monostable Multivibrator 2-Func PDIP16 IC

SN 74121 Monostable Multivibrator

SN74LS221N DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS

SN74LS221N Motorola Monostable Multivibrator, LS Series, 2-Func, TTL, PDIP16 IC

SN74LS123N Motorola Monostable Multivibrator, LS Series, 2-Func, TTL, PDIP16 IC