DM74LS221 Datasheet PDF (Dual Non-Retriggerable One-Shot) | Download National Semiconductor DM74LS221

DM74LS221 - Dual Non-Retriggerable One-Shot

Description

The DM74LS221 is a dual monostable multivibrator with Schmitt-trigger input Each device has three inputs permitting the choice of either leading-edge or trailing-edge triggering Pin (A) is an active-low trigger transition input and pin (B) is an active-high transition Schmitt-trigger input that allo

Features

Y A dual highly stable one-shot Y Compensated for VCC and temperature variations Y Pin-out identical to ’LS123 (Note 1) Y Output pulse width range from 30 ns to 70 seconds Y Hysteresis provided at (B) input for added noise immunity Y Direct reset terminates output pulse Y Triggerable from CLEAR input Y DTL TTL compatible Y Input clamp diodes Note 1 The pin-out is identical to ’LS123 but functionally it is not refer to Operating Rules 10 in this datasheet Functional.

Datasheet Details

Part number	DM74LS221
Manufacturer	National Semiconductor
File Size	130.10 KB
Description	Dual Non-Retriggerable One-Shot
Datasheet	DM74LS221 Datasheet
Additional preview pages of the DM74LS221 datasheet.

📁 Similar Datasheet

DM74LS221 - Dual Non-Retriggerable One-Shot (Fairchild Semiconductor)

DM74LS20 - Dual 4-Input NAND Gate (Fairchild Semiconductor)

DM74LS240 - Octal 3-STATE Buffer/Line Driver/Line Receiver (Fairchild Semiconductor)

DM74LS241 - Octal 3-STATE Buffer/Line Driver/Line Receiver (Fairchild Semiconductor)

DM74LS243 - Quadruple Bus Transceiver (Fairchild Semiconductor)

DM74LS244 - Octal 3-STATE Buffer/Line Driver/Line Receiver (Fairchild Semiconductor)

DM74LS245 - 3-STATE Octal Bus Transceiver (Fairchild Semiconductor)

DM74LS247 - BCD to 7-Segment Decoder/Driver (Fairchild Semiconductor)

DM74LS251 - 3-STATE 1-of-8 Line Data Selector/Multiplexer (Fairchild Semiconductor)

DM74LS253 - 3-STATE Data Selector/Multiplexer (Fairchild Semiconductor)

Full PDF Text Transcription

Click to expand full text

DM74LS221 Dual Non-Retriggerable One-Shot with Clear and Complementary Outputs February 1992 DM74LS221 Dual Non-Retriggerable One-Shot with Clear and Complementary Outputs General Description The DM74LS221 is a dual monostable multivibrator with Schmitt-trigger input Each device has three inputs permitting the choice of either leading-edge or trailing-edge triggering Pin (A) is an active-low trigger transition input and pin (B) is an active-high transition Schmitt-trigger input that allows jitter free triggering for inputs with transition rates as slow as 1 volt second This provides the input with excellent noise immunity Additionally an internal latching circuit at the input stage also provides a high immunity to VCC noise The clear (CLR) input can terminate the output pulse at a prede

Published: Jun 23, 2016 |