CD74AC32M OR Gate IC Equivalent & Substitute Parts

Part Overview

The CD74AC32M is a 4-channel 2-input OR gate logic IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This part is discontinued at DiGi Electronics, making substitute parts necessary for ongoing production and maintenance applications. The 74AC32 logic family provides standard OR gate functionality across the industrial temperature range with ROHS3 compliance and unlimited moisture sensitivity rating.

Substiute Parts

CD74AC32M

Texas InstrumentsIn Stock: 1191CD74AC32M Datasheet

Current PartRFQ

CD74AC32M96

Texas InstrumentsIn Stock: 2667CD74AC32M96 Datasheet

DirectRFQ

MC74AC32DR2G

onsemiIn Stock: 1575MC74AC32DR2G Datasheet

DirectRFQ

74AC32SCX

onsemiIn Stock: 1884274AC32SCX Datasheet

MFR RecommendedRFQ

MC74AC32DG

onsemiIn Stock: 4427MC74AC32DG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74AC32M is determined by strict equivalence in the following parameters:

• Logic function: 4-channel 2-input OR gate
• Package: 14-SOIC surface mount form factor
• Pin count and pinout: 14 pins with identical signal routing
• Output drive capability: 24mA high and low
• Quiescent current: 4µA maximum
• Propagation delay: 9.5ns @ 5V, 50pF load
• Series classification: 74AC logic family
• Compliance: ROHS3, REACH Unaffected, EAR99

The substitute parts listed maintain functional and electrical equivalence within the 74AC32 base product family. Differences in supply voltage range and operating temperature reflect manufacturer-specific specifications but do not affect pin-level compatibility or logic operation in standard applications.

Parameter Comparison

Engineering Selection Recommendations

CD74AC32M96 (Texas Instruments): Direct substitute with identical electrical specifications and extended supply voltage range (1.5V ~ 5.5V). Available in active status with higher inventory. Packaging in Cut Tape & Digi-Reel format supports automated assembly. Recommended for applications requiring Texas Instruments sourcing continuity.

MC74AC32DR2G (onsemi): Active substitute with faster propagation delay (7.5ns vs 9.5ns). Supply voltage range 2V ~ 6V and operating temperature -40°C ~ 85°C. Cut Tape & Digi-Reel packaging. Suitable for standard industrial temperature applications.

74AC32SCX (onsemi): Active substitute with lowest quiescent current (2µA) and faster propagation delay (7.5ns). Highest inventory availability (18,786 pcs). Recommended for power-sensitive applications. Cut Tape & Digi-Reel packaging.

MC74AC32DG (onsemi): Active substitute with identical quiescent current and propagation delay to MC74AC32DR2G. Tube packaging matches original CD74AC32M format. Suitable for applications requiring tube packaging for manual assembly or specific handling requirements.

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 classification identical to the original part.

Frequently Asked Questions (FAQ)

Q: Can CD74AC32M96 be used as a direct replacement for CD74AC32M?

A: Yes. CD74AC32M96 is a direct functional equivalent with identical logic specifications, output drive capability, and propagation delay. Both are Texas Instruments products with the same 14-SOIC package and pin configuration. The primary difference is packaging format (Tube vs. Cut Tape & Digi-Reel) and product status (Discontinued vs. Active).

Q: What is the difference between Texas Instruments and onsemi 74AC32 variants?

A: Texas Instruments variants (CD74AC32M, CD74AC32M96) specify supply voltage 1.5V ~ 5.5V and operating temperature -55°C ~ 125°C. onsemi variants (MC74AC32DR2G, 74AC32SCX, MC74AC32DG) specify supply voltage 2V ~ 6V and operating temperature -40°C ~ 85°C. All maintain identical logic function, pin count, and output drive specifications. Selection depends on application temperature and voltage requirements.

Q: Are there differences in propagation delay between substitute parts?

A: Yes. CD74AC32M and CD74AC32M96 specify 9.5ns propagation delay @ 5V, 50pF load. MC74AC32DR2G, 74AC32SCX, and MC74AC32DG specify 7.5ns propagation delay under identical conditions. The faster onsemi variants are suitable for timing-critical applications but are functionally equivalent for standard logic operations.

Q: Which substitute part has the lowest power consumption?

A: 74AC32SCX has the lowest quiescent current at 2µA maximum, compared to 4µA for all other variants. This makes 74AC32SCX the preferred choice for battery-powered or power-constrained applications.

Q: Can I use onsemi parts in place of Texas Instruments parts in existing designs?

A: Yes, provided your application operates within the onsemi supply voltage range (2V ~ 6V) and temperature range (-40°C ~ 85°C). Pin configuration and logic function are identical. If your design requires the extended low-voltage capability (1.5V) or extended temperature range (-55°C) of Texas Instruments parts, use CD74AC32M96 instead.

Q: What packaging options are available for the 74AC32 logic family?

A: Tube packaging is available from CD74AC32M (discontinued) and MC74AC32DG (active). Cut Tape & Digi-Reel packaging is available from CD74AC32M96, MC74AC32DR2G, and 74AC32SCX. Select based on assembly method: Tube for manual assembly, Cut Tape & Digi-Reel for automated pick-and-place systems.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (CD74AC32M96, MC74AC32DR2G, 74AC32SCX, MC74AC32DG) are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited) and REACH unaffected status, matching the original CD74AC32M specifications.