CD74ACT32E-NG Equivalent & Substitute Parts

Part Overview

The CD74ACT32E-NG is a 4-channel 2-input OR gate logic integrated circuit manufactured by Texas Instruments in 14-PDIP through-hole packaging. This device implements four independent OR logic functions with advanced CMOS technology (ACT series), operating across a 4.5V to 5.5V supply voltage range. The part is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and production continuity. Substitute parts maintain identical logic functionality and electrical performance while offering different packaging formats or active product status from alternative manufacturers.

Substiute Parts

CD74ACT32E-NG

Texas InstrumentsIn Stock: 1120CD74ACT32E-NG Datasheet

Current PartRFQ

CD74ACT32M96

Texas InstrumentsIn Stock: 3001CD74ACT32M96 Datasheet

MFR RecommendedRFQ

CD74ACT32E

Harris CorporationIn Stock: 3350CD74ACT32E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74ACT32E-NG is determined by strict equivalence across the following critical parameters:

Logic Function Equivalence: All substitute parts must implement 4-channel 2-input OR gate logic with identical truth table behavior.

Electrical Specifications: Supply voltage range (4.5V ~ 5.5V), quiescent current (4 µA maximum), output drive capability (24mA high and low), input logic thresholds (0.8V low, 2V high), and propagation delay (12.1ns @ 5V, 50pF) must remain unchanged.

Series Classification: All substitutes belong to the 74ACT logic family, ensuring compatibility with existing 74ACT-based circuit designs.

Packaging Compatibility: Substitutes are grouped by mounting technology (through-hole or surface-mount) to accommodate different PCB assembly requirements. Pin count and functional pin assignment remain constant at 14 pins.

Product Status: Active substitutes are prioritized for new designs; obsolete alternatives serve as direct replacements for legacy systems.

Parameter Comparison

Engineering Selection Recommendations

For New Designs with Surface-Mount Assembly: Select CD74ACT32M96. This part is manufactured by Texas Instruments with active product status, ensuring long-term availability and supply chain stability. It maintains all electrical and functional specifications identical to the main part while offering 14-SOIC surface-mount packaging. ROHS3 compliance satisfies modern environmental and regulatory requirements. Higher inventory availability (2,900 pieces) supports production schedules.

For Through-Hole Assembly Requiring Active Status: CD74ACT32M96 requires conversion to surface-mount assembly. If through-hole mounting is mandatory, CD74ACT32E serves as a parametric equivalent with identical 14-PDIP packaging and electrical performance. However, this part carries obsolete status and RoHS non-compliance, limiting its use to legacy system maintenance or retrofit applications where regulatory compliance is not required.

For Legacy System Replacement: CD74ACT32E provides direct form-fit-function replacement for existing CD74ACT32E-NG installations in through-hole PCB designs. Electrical performance and pin configuration are identical, enabling direct socket substitution without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can CD74ACT32M96 be used as a direct replacement for CD74ACT32E-NG in existing through-hole PCB designs?

A: No. CD74ACT32M96 uses 14-SOIC surface-mount packaging, while CD74ACT32E-NG requires 14-PDIP through-hole mounting. PCB layout and assembly process modifications are necessary. For through-hole designs, use CD74ACT32E instead.

Q: Are all three parts electrically interchangeable?

A: Yes, regarding logic function and electrical specifications. All three parts implement identical 4-channel 2-input OR gate logic with matching supply voltage (4.5V ~ 5.5V), output drive (24mA), propagation delay (12.1ns @ 5V, 50pF), and operating temperature range (-55°C ~ 125°C). Differences exist only in packaging format and product status.

Q: What is the significance of "Active" versus "Obsolete" product status?

A: Active products (CD74ACT32M96) have ongoing manufacturing and guaranteed long-term availability from the manufacturer. Obsolete products (CD74ACT32E-NG, CD74ACT32E) have discontinued production; availability depends on remaining distributor inventory. New designs should specify active parts to ensure supply continuity.

Q: Does RoHS compliance affect functional compatibility?

A: No. RoHS compliance relates to material composition and environmental standards, not electrical function. ROHS3-compliant parts (CD74ACT32E-NG, CD74ACT32M96) meet modern regulatory requirements. RoHS non-compliant parts (CD74ACT32E) function identically but may not satisfy procurement policies for new products or regulated industries.

Q: Can CD74ACT32E replace CD74ACT32M96 in a surface-mount design?

A: No. CD74ACT32E uses 14-PDIP through-hole packaging, incompatible with surface-mount PCB designs. Package format determines mounting technology; electrical equivalence does not override physical incompatibility.

Q: What inventory considerations apply to part selection?

A: CD74ACT32M96 has 2,900 pieces in stock, supporting immediate production needs. CD74ACT32E-NG has 1,061 pieces available. CD74ACT32E has 3,340 pieces in stock. Inventory levels should be verified with suppliers before final procurement decisions for high-volume production.