M54HC221/221A M74HC221/221A DUAL MONOSTABLE MULTIV.
ST Microelectronics
M54HC221A - DUAL MONOSTABLE MULTIVIBRATOR
M54HC221/221A M74HC221/221A DUAL MONOSTABLE MULTIVIBRATOR . . . . . . . . . HIGH SPEED tPD = 25 ns (TYP) at VCC = 5V LOW POWER DISSIPATION STANDBY S.