DM74ALS38AN Equivalent & Substitute Parts

Part Overview

The DM74ALS38AN is a NAND Gate IC with 4 channels and 2 inputs per channel, featuring open collector output configuration in a 14-MDIP package. Manufactured by onsemi, this component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The DM74ALS38AN operates within the 74ALS logic family standard, making direct substitution possible with compatible parts from active manufacturers.

Substiute Parts

DM74ALS38AN

onsemiIn Stock: 1064DM74ALS38AN Datasheet

Current PartRFQ

SN74ALS38BN

Texas InstrumentsIn Stock: 3210SN74ALS38BN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DM74ALS38AN is determined by strict equivalence across the following parameters:

• Logic Type: NAND Gate configuration
• Circuit Count: 4 channels
• Input Count: 2 inputs per channel
• Output Configuration: Open Collector
• Supply Voltage Range: 4.5V ~ 5.5V
• Output Current Capability: 24mA low
• Input Threshold Levels: 0.8V low, 2V high
• Propagation Delay: 33ns @ 5V, 50pF
• Operating Temperature Range: 0°C ~ 70°C
• Package Type: 14-DIP form factor with 0.300" (7.62mm) pitch
• Mounting: Through Hole

The SN74ALS38BN from Texas Instruments meets all specified parameters and maintains identical electrical and mechanical characteristics, enabling direct functional substitution.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS38BN is the qualified substitute for the DM74ALS38AN. Selection is based on the following factors:

• Product Status: The SN74ALS38BN maintains Active status, ensuring continued availability and manufacturing support, whereas the DM74ALS38AN is Obsolete.
• Compliance: The SN74ALS38BN is ROHS3 Compliant, meeting current regulatory requirements. Both parts maintain REACH Unaffected status and EAR99 classification.
• Electrical Equivalence: All electrical parameters, including supply voltage, output current, input thresholds, and propagation delay, are identical.
• Mechanical Compatibility: Both parts utilize the 14-DIP package with identical pitch and through-hole mounting, enabling direct PCB substitution without layout modification.
• Inventory Availability: The SN74ALS38BN is available in higher quantities (3100 Pcs) compared to the DM74ALS38AN (1053 Pcs).

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS38BN replace the DM74ALS38AN in existing designs?

A: Yes. The SN74ALS38BN is electrically and mechanically equivalent to the DM74ALS38AN. All functional parameters, including logic operation, timing, voltage levels, and output current, are identical. The 14-DIP package dimensions and through-hole mounting are the same, permitting direct substitution on existing PCBs.

Q: Are there differences in packaging between these parts?

A: Both parts use the 14-DIP (0.300", 7.62mm) package. The DM74ALS38AN is supplied in standard packaging, while the SN74ALS38BN is supplied in Tube packaging. This difference does not affect electrical performance or mechanical fit.

Q: What is the significance of the DM74ALS38AN being Obsolete?

A: Obsolete status indicates that onsemi has discontinued manufacturing. The SN74ALS38BN, with Active status from Texas Instruments, ensures long-term availability and continued manufacturing support for new designs and production runs.

Q: Are there compliance differences between the two parts?

A: The SN74ALS38BN is ROHS3 Compliant, meeting current environmental regulations. Both parts are REACH Unaffected and classified as EAR99 for export purposes. The SN74ALS38BN is the preferred choice for applications requiring current compliance certifications.

Q: Do the input and output characteristics differ?

A: No. Both parts have identical input logic levels (0.8V low, 2V high), output current capability (24mA low), and propagation delay (33ns @ 5V, 50pF). They operate within the same supply voltage range (4.5V ~ 5.5V) and temperature range (0°C ~ 70°C).