SN74HC157NG4 Equivalent & Substitute Parts

Part Overview

The SN74HC157NG4 is a 4 x 2:1 multiplexer logic integrated circuit manufactured by Texas Instruments in 16-DIP packaging. This component is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design and production requirements. The part operates across a 2V to 6V supply range with output currents of 7.8mA for both high and low states, suitable for general-purpose digital logic applications requiring multiplexing functionality.

Substiute Parts

SN74HC157NG4

Texas InstrumentsIn Stock: 945SN74HC157NG4 Datasheet

Current PartRFQ

SN74HC258N

Texas InstrumentsIn Stock: 1272SN74HC258N Datasheet

Parametric EquivalentRFQ

SN74HC157N

Texas InstrumentsIn Stock: 3600SN74HC157N Datasheet

MFR RecommendedRFQ

SN74HC158N

Texas InstrumentsIn Stock: 2270SN74HC158N Datasheet

Parametric EquivalentRFQ

SN74HC257N

Texas InstrumentsIn Stock: 2567SN74HC257N Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74HC157NG4 is determined by strict equivalence across the following critical parameters:

• Circuit configuration: 4 x 2:1 multiplexer topology
• Output current specifications: 7.8mA high and low
• Supply voltage range: 2V ~ 6V single supply
• Operating temperature range: -40°C ~ 85°C
• Package type: 16-DIP (0.300", 7.62mm)
• Mounting method: Through Hole
• Series classification: 74HC logic family
• Compliance standards: ROHS3 and REACH requirements

All substitute parts listed maintain identical electrical and mechanical parameters across these criteria. Differences in product status and packaging format (tube vs. other configurations) do not affect functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

SN74HC157N is the manufacturer-recommended substitute, maintaining active product status with 3584 units in stock. All four substitute parts—SN74HC157N, SN74HC158N, SN74HC257N, and SN74HC258N—are currently active products from Texas Instruments and meet ROHS3 and REACH compliance requirements identical to the original part.

Selection between active substitutes should be based on inventory availability and supply chain lead times. SN74HC157N and SN74HC257N offer the highest inventory levels at 3584 and 2460 units respectively. All substitutes are functionally equivalent for applications requiring 4 x 2:1 multiplexer logic with the specified electrical and thermal parameters.

Frequently Asked Questions (FAQ)

Q: Can SN74HC157N directly replace SN74HC157NG4 in existing designs?

A: Yes. Both parts share identical electrical specifications, operating temperature range, supply voltage requirements, output current ratings, and 16-DIP package dimensions. Direct pin-for-pin substitution is supported.

Q: What is the difference between SN74HC157N and SN74HC258N?

A: Both parts are parametrically equivalent 4 x 2:1 multiplexers with identical electrical and thermal characteristics. The difference lies in product status and inventory availability. SN74HC258N is active with 1208 units in stock, while SN74HC157N is active with 3584 units in stock.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitutes—SN74HC157N, SN74HC158N, SN74HC257N, and SN74HC258N—are ROHS3 compliant and REACH unaffected, matching the compliance profile of the original SN74HC157NG4.

Q: Does packaging format affect substitution eligibility?

A: All substitute parts use identical 16-DIP (0.300", 7.62mm) through-hole packaging. Packaging format differences (tube vs. other configurations) do not affect electrical or mechanical compatibility.

Q: What is the operating temperature range for all substitutes?

A: All substitute parts operate across -40°C to 85°C, identical to the original SN74HC157NG4.

Q: Can these parts be used in applications requiring 2V to 6V supply voltage?

A: Yes. All substitute parts support the full 2V to 6V single supply voltage range with 7.8mA output current capability for both high and low states.