DM74LS132N NAND Gate IC Equivalent & Substitute Parts

Part Overview

The DM74LS132N is a 4-channel NAND gate IC with Schmitt trigger inputs, manufactured by onsemi in a 14-MDIP package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The DM74LS132N operates within the standard 74LS logic family, providing reliable switching performance for digital logic applications requiring noise immunity through Schmitt trigger input conditioning.

Substiute Parts

DM74LS132N

onsemiIn Stock: 1639DM74LS132N Datasheet

Current PartRFQ

SN74LS132N

Texas InstrumentsIn Stock: 13850SN74LS132N Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DM74LS132N is determined by strict equivalence across the following critical parameters:

• Logic function: 4-channel NAND gate with 2 inputs per gate
• Schmitt trigger input feature
• Supply voltage range: 4.75V ~ 5.25V
• Output current specifications: 400µA (high), 8mA (low)
• Input logic thresholds: 0.5V (low), 1.9V (high)
• Operating temperature range: 0°C ~ 70°C
• Through-hole mounting in 14-DIP package format

The SN74LS132N from Texas Instruments meets all functional and electrical requirements for direct substitution. Both parts share identical logic family classification (74LS), pin configuration, and core electrical characteristics. Package compatibility is confirmed through matching 14-DIP physical specifications.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS132N from Texas Instruments is the direct equivalent for the obsolete DM74LS132N. Selection should be based on the following factors:

Product Status: The DM74LS132N is classified as obsolete. The SN74LS132N maintains active product status, ensuring continued availability and manufacturing support.

Compliance and Certifications: The SN74LS132N is ROHS3 compliant, whereas the DM74LS132N is RoHS non-compliant. Both parts share identical REACH and ECCN classifications (REACH Unaffected, EAR99). For applications requiring RoHS compliance, the SN74LS132N is the appropriate selection.

Electrical Performance: Both parts meet identical electrical specifications for logic operation. The SN74LS132N demonstrates improved propagation delay performance (22ns versus 33ns at 5V with 50pF load), providing enhanced switching speed without compromising functional compatibility.

Inventory and Supply: The SN74LS132N is available in significantly higher quantities (13,752 pieces) compared to the DM74LS132N (1,543 pieces), supporting long-term production requirements.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS132N directly replace the DM74LS132N without circuit modifications?

A: Yes. Both parts are pin-compatible 14-DIP packages with identical electrical specifications for supply voltage, input/output logic levels, and output current ratings. No circuit modifications are required for direct substitution.

Q: What is the difference in propagation delay between these parts?

A: The SN74LS132N exhibits 22ns maximum propagation delay at 5V with 50pF load, compared to 33ns for the DM74LS132N. This represents improved switching performance while maintaining full functional compatibility.

Q: Are there packaging differences between the DM74LS132N and SN74LS132N?

A: Both parts use 14-DIP (0.300", 7.62mm) through-hole packages. Physical dimensions and pin spacing are identical, ensuring compatibility with existing PCB layouts and socket configurations.

Q: Why is RoHS compliance important for this substitution?

A: The SN74LS132N is ROHS3 compliant, meeting environmental and regulatory requirements for many applications and markets. The obsolete DM74LS132N is RoHS non-compliant. For new designs or applications with RoHS requirements, the SN74LS132N is the appropriate selection.

Q: What is the Schmitt trigger feature and why does it matter?

A: Schmitt trigger inputs provide hysteresis in the input switching threshold, improving noise immunity in noisy environments. Both the DM74LS132N and SN74LS132N include this feature with identical input logic level specifications (0.5V low, 1.9V high).

Q: Are there any temperature or supply voltage limitations when substituting?

A: No. Both parts operate across the identical temperature range (0°C ~ 70°C) and supply voltage range (4.75V ~ 5.25V). Operating conditions remain unchanged during substitution.