CD74HC221MG4 Equivalent & Substitute Parts

Part Overview

The CD74HC221MG4 is a monostable multivibrator logic IC manufactured by Texas Instruments, housed in a 16-SOIC surface mount package. This component features dual independent circuits with Schmitt trigger inputs and an 18 ns propagation delay, operating across a 2 V to 6 V supply voltage range. The CD74HC221MG4 is currently discontinued at DiGi Electronics, making identification of compatible substitute parts essential for ongoing design support and procurement.

Substiute Parts

CD74HC221MG4

Texas InstrumentsIn Stock: 1070CD74HC221MG4 Datasheet

Current PartRFQ

CD74HC221M96

Texas InstrumentsIn Stock: 19712CD74HC221M96 Datasheet

DirectRFQ

CD74HC221M

Texas InstrumentsIn Stock: 3380CD74HC221M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CD74HC221MG4 are qualified based on strict electrical and mechanical parameter matching within the 74HC221 product family. All substitute candidates maintain identical logic functionality, propagation delay specifications, output current ratings, supply voltage range, and operating temperature range. Package compatibility is maintained through the 16-SOIC form factor across all qualified substitutes. Substitution validity is determined exclusively by these parameters: logic type (monostable multivibrator), independent circuit count (2), Schmitt trigger input presence, propagation delay (18 ns), output current characteristics (5.2 mA), supply voltage tolerance (2 V ~ 6 V), and thermal operating range (-55°C ~ 125°C).

Parameter Comparison

Engineering Selection Recommendations

CD74HC221M96 is the primary substitute for CD74HC221MG4 applications. This part maintains full electrical and mechanical equivalence while offering active product status and dual packaging availability in Cut Tape and Digi-Reel formats, ensuring reliable long-term procurement. CD74HC221M is a secondary substitute option, providing identical electrical specifications and ROHS3 compliance, though it carries discontinued status at DiGi Electronics and is packaged in Tube format. Both substitutes are manufactured by Texas Instruments and comply with REACH and RoHS3 requirements, matching the original part's regulatory certifications.

Frequently Asked Questions (FAQ)

Q: Can CD74HC221M96 directly replace CD74HC221MG4 in existing designs? A: Yes. CD74HC221M96 is electrically and mechanically equivalent, with identical logic type, propagation delay, output current, supply voltage range, operating temperature, and 16-SOIC package specifications. Pin-for-pin compatibility is maintained.

Q: What is the difference between CD74HC221M96 and CD74HC221M? A: Both parts are electrically identical. The primary difference is product status and packaging format. CD74HC221M96 is active with Cut Tape and Digi-Reel packaging options, while CD74HC221M is discontinued at DiGi Electronics and supplied in Tube format.

Q: Are all three parts ROHS3 compliant? A: Yes. CD74HC221MG4, CD74HC221M96, and CD74HC221M are all ROHS3 compliant with MSL rating of 1 (Unlimited), meeting environmental and regulatory requirements.

Q: Does packaging format affect electrical performance? A: No. Packaging format (Digi-Reel, Cut Tape, or Tube) does not affect electrical performance or functional characteristics. Selection should be based on procurement and assembly process requirements.

Q: What supply voltage range do these parts support? A: All three parts operate across 2 V to 6 V supply voltage range with identical electrical specifications at all voltage levels within this range.