PC74HC221D Dual non-retriggerable monostable multivibrator with reset SOIC16 SMD

This product data sheet is originally written in English.


PC74HC221D Dual non-retriggerable monostable multivibrator with reset SOIC16 SMD

Manufactured by Philips - PC74HC221D - SOIC16 SMD Package

Product Overview

The 74HC221D is a dual non-retriggerable monostable Multivibrator with reset is a high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL ). They are specified in compliance with JEDEC standard no-7A. The Multivibrator are dual non-retriggerable monostable multivibrators. Each multivibrator features an active low-going edge input (nA) and an active high-going edge input (nB), either of which can be used as an enable input. Pulse triggering occurs at a particular voltage level and is not directly related to the transition time of the input pulse. Schmitt-trigger input circuitry for the nB inputs allow jitter-free triggering from inputs with slow transition rates, providing the circuit with excellent noise immunity. Once triggered, the outputs (nQ, nQ) are independent of further transitions of nA and nB inputs and are a function of the timing components.
  • Pulse width variance is typically less than ±5%
  • Pin-out identical to 123
  • Over-riding reset terminates output pulse
  • nB Inputs have hysteresis for improved noise immunity
  • Standard output capability

Our REF# 2488 - B79

Combined Postage

I will combine postage where several different items are purchased at the same time.

If you purchase more than one product please add it to your basket (if possible) and then request a total for your combined purchases. (I believe this only works on ebay.co.uk desktop website and not on mobile devices or some other country websites). I will then send you a total with just the one postage charge. If you cannot follow this process then I will refund the excess postage when I process the order.

In most cases you can order as many of a single item as you want for the same postage as buying one, and combine other items within this single charge. For some heavier items such as transformers, there may be an additional postage charge for the second and subsequent items. Please feel free to contact us if you have any queries

International Postage

Standard AirMail is NOT tracked - If you want your package tracked the option is available at checkout by selecting the appropriate postage option.

We are usually happy to ship items throughout Europe and N America.

Orders placed by 1pm Mon - Fri will usually be shipped the same day but this is not guaranteed.

The 74HC221D is a dual non-retriggerable monostable Multivibrator with reset is a high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL ). They are specified in compliance with JEDEC standard no-7A. The Multivibrator are dual non-retriggerable monostable multivibrators. Each multivibrator features an active low-going edge input (nA) and an active high-going edge input (nB), either of which can be used as an enable input. Pulse triggering occurs at a particular voltage level and is not directly related to the transition time of the input pulse. Schmitt-trigger input circuitry for the nB inputs allow jitter-free triggering from inputs with slow transition rates, providing the circuit with excellent noise immunity. Once triggered, the outputs (nQ, nQ) are i
Brand Other
Type Dual non-retriggerable monostable multivibrator
Unit Type Unit
MPN PC74HC221D
Unit Quantity 1
Country/Region of Manufacture Thailand
EAN Does not apply