CD74HC221MT Equivalent & Substitute Parts

Part Overview

The CD74HC221MT is a monostable multivibrator logic integrated circuit manufactured by Texas Instruments. This device features dual independent circuits with Schmitt trigger inputs, designed for timing and pulse generation applications. The part is currently in active production status with 1298 units available in new original inventory. Alternative equivalent parts may be required due to inventory constraints, procurement lead times, or specific packaging preferences in manufacturing workflows.

Substiute Parts

CD74HC221MT

Texas InstrumentsIn Stock: 1399CD74HC221MT Datasheet

Current PartRFQ

CD74HC221M96

Texas InstrumentsIn Stock: 19712CD74HC221M96 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Equivalent substitution for the CD74HC221MT is determined by strict alignment of the following critical parameters:

• Logic type and circuit configuration (monostable multivibrator with 2 independent circuits)
• Propagation delay specification (18 ns)
• Schmitt trigger input functionality
• Output current ratings (5.2 mA high and low)
• Supply voltage range (2 V ~ 6 V)
• Operating temperature range (-55°C ~ 125°C)
• Package type and pin configuration (16-SOIC)
• Surface mount mounting type
• Compliance certifications (ROHS3, REACH Unaffected)

The CD74HC221M96 meets all these criteria and is classified as a direct equivalent substitute. The primary distinction between these parts is packaging format availability and inventory levels.

Parameter Comparison

Engineering Selection Recommendations

Both the CD74HC221MT and CD74HC221M96 are active production parts from Texas Instruments with identical electrical and mechanical specifications. Selection between these parts should be based on:

• Packaging format requirements: CD74HC221M96 offers both Cut Tape and Digi-Reel® packaging options, providing greater flexibility for automated assembly processes
• Inventory availability: CD74HC221M96 maintains significantly higher stock levels (19622 units versus 1298 units)
• Supply chain continuity: Both parts carry ROHS3 compliance and REACH Unaffected status, ensuring regulatory compliance across manufacturing regions

The CD74HC221M96 is the preferred substitute when inventory or packaging format constraints affect the primary part selection.

Frequently Asked Questions (FAQ)

Q: Are CD74HC221MT and CD74HC221M96 pin-compatible? A: Yes. Both parts use the 16-SOIC package with identical pin configuration and electrical characteristics. Direct board-level substitution is supported without design modification.

Q: What is the difference between Cut Tape and Digi-Reel® packaging? A: Cut Tape packaging supplies individual components on tape segments suitable for manual handling and small-volume assembly. Digi-Reel® packaging provides continuous tape format optimized for automated pick-and-place equipment in high-volume manufacturing. The CD74HC221M96 supports both formats, while the CD74HC221MT is available in Cut Tape only.

Q: Do these parts require different handling procedures? A: No. Both parts carry Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture control requirements during storage or handling. Standard ESD precautions apply to both variants.

Q: Can I use CD74HC221M96 as a direct replacement in existing designs? A: Yes. Electrical performance, timing characteristics, and package dimensions are identical. No circuit redesign or PCB layout modification is necessary.

Q: Are there any compliance differences between these parts? A: No. Both parts maintain identical ROHS3 compliance, REACH Unaffected status, and regulatory certifications. Manufacturing and supply chain compliance is equivalent.