SN74HC139NG4 Equivalent & Substitute Parts

Part Overview

The SN74HC139NG4 is a decoder/demultiplexer logic integrated circuit manufactured by Texas Instruments, featuring a 1 x 2:4 circuit configuration in a 16-DIP package. This part is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design requirements and component procurement. The functional architecture remains consistent across qualified substitutes, enabling direct replacement in applications requiring decoder/demultiplexer functionality with identical electrical and mechanical specifications.

Substiute Parts

SN74HC139NG4

Texas InstrumentsIn Stock: 1042SN74HC139NG4 Datasheet

Current PartRFQ

SN74HC139AN

Texas InstrumentsIn Stock: 1244SN74HC139AN Datasheet

Parametric EquivalentRFQ

SN74HC139N

Texas InstrumentsIn Stock: 9861SN74HC139N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74HC139NG4 is determined by strict equivalence across the following critical parameters:

• Circuit configuration: 1 x 2:4 decoder/demultiplexer topology
• Independent circuits: 2 circuits per device
• Output current specifications: 5.2mA high and low
• Supply voltage range: 2V ~ 6V single supply
• Operating temperature range: -40°C ~ 85°C
• Package type: 16-DIP through-hole mounting
• Electrical characteristics: Identical functional behavior

The substitute parts SN74HC139AN and SN74HC139N maintain full parametric equivalence with the main part number across all specified electrical and mechanical criteria. Both substitutes are manufactured by Texas Instruments within the 74HC series and share the identical base product number (74HC139), confirming functional interchangeability.

Parameter Comparison

Engineering Selection Recommendations

Both SN74HC139AN and SN74HC139N are qualified substitutes for the discontinued SN74HC139NG4. Selection between these alternatives is based on product availability and supply chain considerations:

SN74HC139N is the manufacturer-recommended substitute, with 9800 pieces in stock, providing the highest availability for immediate procurement. This part maintains active product status and full compliance with ROHS3 and REACH requirements.

SN74HC139AN is a parametric equivalent with 1213 pieces in stock, also maintaining active product status and identical compliance certifications. This part is supplied in tube packaging and represents an alternative source for applications requiring the 74HC139 decoder/demultiplexer function.

Both substitutes are electrically and mechanically identical to the original part number and require no circuit modifications or design changes for implementation.

Frequently Asked Questions (FAQ)

Q: Can SN74HC139AN and SN74HC139N be used interchangeably with SN74HC139NG4?

A: Yes. Both substitute parts maintain identical electrical specifications, circuit configuration, package type, and operating parameters. Direct substitution is possible without circuit modification.

Q: What is the difference between SN74HC139AN and SN74HC139N?

A: Both parts are functionally equivalent with identical electrical and mechanical specifications. The primary difference is packaging format (tube) and inventory availability. SN74HC139N has higher stock levels (9800 pieces versus 1213 pieces).

Q: Are there any compliance or certification differences between the main part and substitutes?

A: No. All three part numbers maintain ROHS3 compliance, REACH unaffected status, and identical ECCN and HTSUS classifications.

Q: Does the 16-DIP package remain the same across all three part numbers?

A: Yes. All three parts use the 16-DIP (0.300", 7.62mm) through-hole package with identical pin configuration and mechanical dimensions.

Q: What supply voltage range is supported by these decoder/demultiplexer parts?

A: All three parts operate with a single supply voltage range of 2V to 6V, maintaining identical output current specifications of 5.2mA for both high and low states.

Q: Are these parts suitable for the full -40°C to 85°C operating temperature range?

A: Yes. All three part numbers are rated for the complete -40°C to 85°C operating temperature range without derating.