DM74AS32N Equivalent & Substitute Parts

Part Overview

The DM74AS32N is a 4-channel 2-input OR gate logic IC manufactured by onsemi in a 14-MDIP package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The DM74AS32N operates within the 74AS logic family standard, providing digital logic gating functionality for TTL-compatible applications.

Substiute Parts

DM74AS32N

onsemiIn Stock: 1142DM74AS32N Datasheet

Current PartRFQ

SN74AS1032AN

Texas InstrumentsIn Stock: 2357SN74AS1032AN Datasheet

SimilarRFQ

SN74AS32N

Texas InstrumentsIn Stock: 3761SN74AS32N Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DM74AS32N is determined by strict equivalence across the following critical parameters:

• Logic Type: OR Gate (4-channel, 2-input configuration)
• Voltage Supply Range: 4.5V ~ 5.5V
• Input Logic Levels: Low 0.8V, High 2V
• Operating Temperature Range: 0°C ~ 70°C
• Package Type: 14-DIP through-hole mounting
• Series Classification: 74AS logic family

Two substitute parts meet these criteria:

1. SN74AS32N (Texas Instruments) - Parametric equivalent with identical electrical specifications and output current ratings
2. SN74AS1032AN (Texas Instruments) - Similar equivalent with different output current specifications (48mA vs 2mA/20mA) and quiescent current rating

Parameter Comparison

Engineering Selection Recommendations

SN74AS32N (Texas Instruments) is the primary substitute for the DM74AS32N. This part maintains identical electrical specifications including output current ratings (2mA, 20mA) and propagation delay (5.8ns), ensuring direct functional equivalence. The SN74AS32N carries active product status and ROHS3 compliance, supporting long-term design continuity.

SN74AS1032AN (Texas Instruments) serves as an alternative substitute when higher output current capability is required. This part provides 48mA output current (both high and low) compared to the original 2mA/20mA specification, with a marginally increased propagation delay of 6.3ns. Selection of this variant depends on circuit load requirements and output drive specifications.

Both substitutes are manufactured by Texas Instruments, maintain the 74AS logic family standard, and are packaged in identical 14-DIP through-hole configuration. Both are ROHS3 compliant and REACH unaffected.

Frequently Asked Questions (FAQ)

Q: Can SN74AS32N be used as a direct replacement for DM74AS32N?

A: Yes. The SN74AS32N is a parametric equivalent with identical electrical specifications across all critical parameters: supply voltage, input logic levels, output current ratings, propagation delay, operating temperature range, and package configuration.

Q: What is the difference between SN74AS32N and SN74AS1032AN?

A: Both are 4-channel 2-input OR gates in 14-DIP packages. The primary difference is output current capability: SN74AS32N provides 2mA/20mA (matching the original DM74AS32N), while SN74AS1032AN provides 48mA for both high and low outputs. The SN74AS1032AN also has a slightly higher propagation delay of 6.3ns versus 5.8ns.

Q: Are the packages physically identical?

A: Yes. Both substitute parts use 14-DIP (0.300", 7.62mm) through-hole packaging, identical to the DM74AS32N. Direct board-level substitution is possible without layout modifications.

Q: Which substitute should I select for new designs?

A: For new designs requiring direct electrical equivalence to the original specification, select SN74AS32N. If your circuit requires higher output current drive capability, select SN74AS1032AN. Both parts are active products with established supply chains.

Q: Are there compliance differences between the substitutes?

A: Both SN74AS32N and SN74AS1032AN are ROHS3 compliant and REACH unaffected. The original DM74AS32N is REACH unaffected but does not carry RoHS certification due to its obsolete status.