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SN74LS221DR AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

SN74LS221DR product

SN74LS221DR

Multivibrators

MonostableMultivibratorSchmitt-TriggerLogic

The SN74LS221DR is a dual monostable multivibrator with Schmitt-trigger inputs, ideal for pulse generation and timing applications requiring high noise immunity.

Best for

  • Pulse generation
  • Timing delay circuits
  • Reset signal generation

Avoid if

  • Applications requiring extremely low power consumption (consider CMOS alternatives)

Check before use

  • External timing resistor and capacitor values
  • Input signal transition rates

Key specifications

Supply Voltage
4.75 V to 5.25 V
Input Type
Schmitt Trigger
Package
SOIC-16

Compliance & Environment

RoHS
ROHS3 Compliant
REACH
-
MSL
Level-1-260C-UNLIM
ECCN
-
HTSUS
-

Application

Industrial ControlGeneral Timing

Datasheet

Texas-Instruments-company-64.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for SN74LS221DR: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
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PCB Footprint
Land pattern for PCB layout
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3D Model
STEP file for mechanical design
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Where to Buy

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Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

It is a dual monostable multivibrator IC from Texas Instruments, featuring Schmitt-trigger inputs for jitter-free triggering.