SN74S20NG4 Equivalent & Substitute Parts

Part Overview

The SN74S20NG4 is a NAND Gate IC featuring 2 channels with 4 inputs per channel in a 14-PDIP package, manufactured by Texas Instruments. This component is classified as a logic gate and operates within the 74S series of TTL logic devices. The SN74S20NG4 is currently discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing design support and component procurement.

Substiute Parts

SN74S20NG4

Texas InstrumentsIn Stock: 927SN74S20NG4 Datasheet

Current PartRFQ

SN74S20N

Texas InstrumentsIn Stock: 16871SN74S20N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74S20NG4 is determined by strict equivalence across the following critical parameters:

• Logic Type: NAND Gate configuration
• Number of Circuits: 2 channels
• Number of Inputs: 4 inputs per channel
• Voltage - Supply: 4.75V ~ 5.25V
• Current - Output High, Low: 1mA, 20mA
• Input Logic Level - Low: 0.8V
• Input Logic Level - High: 2V
• Max Propagation Delay @ V, Max CL: 5ns @ 5V, 50pF
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 14-DIP (0.300", 7.62mm)
• Base Product Number: 74S20

The SN74S20N qualifies as a direct substitute based on identical electrical specifications and package configuration. Packaging format differences (tube vs. other formats) do not affect functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

The SN74S20N is the primary substitute for the discontinued SN74S20NG4. Both components are manufactured by Texas Instruments and maintain identical electrical and mechanical specifications across all critical parameters. The SN74S20N carries Active product status, ensuring continued availability and supply chain reliability.

Both parts maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for industrial and commercial applications. The SN74S20N is currently available in higher inventory quantities, supporting procurement needs for replacement and new designs.

Pin-to-pin compatibility and functional equivalence are confirmed across all logic operations, timing characteristics, and thermal operating ranges. Direct substitution in existing PCB designs requires no circuit modifications.

Frequently Asked Questions (FAQ)

Q: Can the SN74S20N directly replace the SN74S20NG4 without circuit modifications?

A: Yes. Both components share identical electrical specifications, pin configurations, and package dimensions. Direct substitution is supported without design changes.

Q: What is the difference between SN74S20NG4 and SN74S20N?

A: The primary difference is product status. The SN74S20NG4 is discontinued, while the SN74S20N remains active. Electrical performance and packaging are equivalent.

Q: Are there any compliance or certification differences between these parts?

A: Both parts maintain ROHS3 compliance and REACH Unaffected status. No compliance differences exist.

Q: What is the 14-DIP package specification?

A: The 14-DIP package is a through-hole dual inline package with 0.300-inch row spacing and 7.62mm pitch, standard for TTL logic devices in the 74S series.

Q: Is the SN74S20N available in different packaging formats?

A: The SN74S20N is supplied in tube packaging. Packaging format does not affect functional compatibility or electrical performance.