HD74HC221

HD74HC221 Dual Monostable Multivibrators (with Schmitt Trigger Input) REJ03D0591–0200 (Previous ADE-205-468) Rev.2.00 Jan 31, 2006 Description Each multivibrator features both a negative, A, and a positive, B, transition triggered input, either of which can be used as an inhibit. Also included is a clear input that when taken low resets the one shot. The HD74HC221 can be triggered on the positive transition of the clear while A is held low and B is held high. This device is a non-retriggerable, and therefore cannot be retriggered until the output pulse times out. The output pulse equation is simply: tW = 0.7·(Rext)·(Cext) Features High Speed Operation High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current Ordering Information Part Name Package Type Package Code (Previous Code) Package Abbreviation HD74HC221P DILP-16 pin PRDP0016AE-B (DP-16FV) P HD74HC22...