CD74ACT20M NAND Gate IC Equivalent & Substitute Parts

Part Overview

The CD74ACT20M is a dual 4-input NAND gate logic IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This component is classified as Last Time Buy, indicating limited future availability. The CD74ACT20M operates within the 74ACT logic family standard, providing two independent NAND gate circuits with 4 inputs each. Identifying equivalent and substitute parts is necessary due to the Last Time Buy status and to ensure design flexibility for procurement and production planning.

Substiute Parts

CD74ACT20M

Texas InstrumentsIn Stock: 1778CD74ACT20M Datasheet

Current PartRFQ

CD74ACT20M96

Texas InstrumentsIn Stock: 2599CD74ACT20M96 Datasheet

MFR RecommendedRFQ

MC74ACT20DG

onsemiIn Stock: 1708MC74ACT20DG Datasheet

MFR RecommendedRFQ

MC74ACT20DR2G

onsemiIn Stock: 4613MC74ACT20DR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CD74ACT20M are qualified based on the following critical parameters that must remain constant:

• Logic Type: NAND Gate (2 channels, 4 inputs per channel)
• Package Type: 14-SOIC surface mount
• Voltage Supply Range: 4.5V ~ 5.5V
• Output Current Capability: 24mA high and low
• Input Logic Levels: 0.8V low, 2V high
• Base Product Number: 74ACT20
• RoHS3 Compliance and MSL 1 rating

Substitute parts may differ in:

• Packaging format (Tube vs. Tape & Reel)
• Product Status (Active vs. Last Time Buy)
• Propagation Delay performance
• Operating Temperature range (within acceptable limits for the 74ACT family)
• Manufacturer (Texas Instruments or onsemi)

Parameter Comparison

Engineering Selection Recommendations

CD74ACT20M96 (Texas Instruments, Tape & Reel): This is the primary substitute for the CD74ACT20M. It maintains identical electrical specifications and temperature range while offering Active product status. The only difference is packaging format (Tape & Reel vs. Tube), which is suitable for automated assembly environments. This part is recommended for new designs and high-volume production.

MC74ACT20DG (onsemi, Tube): This substitute provides Active product status with improved propagation delay performance (9ns vs. 14.6ns). The operating temperature range is narrower (-40°C ~ 85°C vs. -55°C ~ 125°C), which may be acceptable for most commercial and industrial applications. Tube packaging matches the original part format. This option is suitable when onsemi supply chain preference is established.

MC74ACT20DR2G (onsemi, Tape & Reel): This substitute combines onsemi manufacturing with Tape & Reel packaging and improved propagation delay (9ns). It is the optimal choice for high-volume automated assembly requiring Active product status and superior timing performance. The narrower operating temperature range applies as with the MC74ACT20DG variant.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and identical logic functionality, ensuring direct compatibility in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can I use CD74ACT20M96 as a direct replacement for CD74ACT20M?

A: Yes. CD74ACT20M96 is electrically and functionally identical to CD74ACT20M. The only difference is packaging format (Tape & Reel vs. Tube). Both parts are manufactured by Texas Instruments and share identical electrical specifications, temperature range, and performance characteristics.

Q: What is the difference between onsemi MC74ACT20DG and MC74ACT20DR2G?

A: Both parts are manufactured by onsemi with identical electrical specifications and improved propagation delay (9ns). The difference is packaging format: MC74ACT20DG uses Tube packaging, while MC74ACT20DR2G uses Tape & Reel packaging. Select based on your assembly process requirements.

Q: Are there temperature range limitations with onsemi substitutes?

A: onsemi parts (MC74ACT20DG and MC74ACT20DR2G) operate from -40°C to 85°C, compared to the CD74ACT20M range of -55°C to 125°C. If your application requires operation below -40°C or above 85°C, use Texas Instruments parts (CD74ACT20M or CD74ACT20M96).

Q: Do all substitute parts have the same package footprint?

A: Yes. All substitute parts use 14-SOIC surface mount packaging with identical dimensions (0.154", 3.90mm width). PCB layout and footprints are interchangeable across all listed parts.

Q: Why is CD74ACT20M marked as Last Time Buy?

A: Last Time Buy status indicates Texas Instruments is discontinuing this part number. CD74ACT20M96 is the recommended long-term replacement, offering identical specifications with Active product status for continued availability.

Q: Are all parts RoHS3 compliant?

A: Yes. All listed parts (CD74ACT20M, CD74ACT20M96, MC74ACT20DG, and MC74ACT20DR2G) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.