onsemi 74VHC221AMX

FAIRCHILD SEMICONDUCTOR 74VHC221AMX IC, MONO MULTIVIBRATOR, 9.6NS, SOIC-16

e3 74VHC221 2007 74VHC multivibrator 2V~5.5V 10.3mm 8mA 8mA 8.1ns

Monostable Multivibrator Dual 16-Pin SOIC N T/R

Dual Non-Retriggerable Monostable Multivibrator

Monostable Multivibrator, AHC/VHC Series, 2-Func, CMOS, PDSO16

MULTIVIBRATOR DUAL MONO 16SOIC

Multivibrator Logic IC; Logic Type:Monostable Multivibrator; Logic Family:VHC; Logic Base Number:74221; Rise Time:100ns; Fall Time, tf:100ns; Supply Voltage Min:2V; Supply Voltage Max:5.5V; Termination Type:SMD; Package/Case:16-SOIC ;RoHS Compliant: Yes

The VHC221A is an advanced high speed CMOS Monostable Multivibrator fabricated with silicon gate CMOS technology. It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. Each multivibrator features both a negative, A, and a positive, B, transition triggered input, either of which can be used as an inhibit input. Also included is a clear input that when taken LOW resets the one-shot. The VHC221A can be triggered on the positive transition of the clear while A is held LOW and B is held HIGH. The VHC221A is non-retriggerable, and therefore cannot be retriggered until the output pulse times out. The output pulse width is determined by the equation: PW = (Rx)(Cx); where PW is in seconds, R is in ohms, and C is in farads. Limits for Rx and Cx are: External capacitor, Cx: No limit External resistors, Rx:VCC= 2.0V, 5 kohm min VCC > 3.0V, 1 kohm min An input protection circuit ensures that 0 to 7V can be applied to the input pins without regard to the supply voltage. This device can be used to interface 5V to 3V systems and two supply systems such as battery back up. This circuit prevents device destruction due to mismatched supply and input voltages.