SN74HC157PW Equivalent & Substitute Parts

Part Overview

The SN74HC157PW is a 4 x 2:1 multiplexer logic integrated circuit manufactured by Texas Instruments in a 16-TSSOP surface mount package. This part is currently discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and production requirements. The SN74HC157PW operates across a 2V to 6V supply range with output currents of 7.8mA (high and low) and supports operating temperatures from -40°C to 85°C. Equivalent alternatives maintain the same functional circuit topology while substitute parts may offer enhanced specifications or different manufacturer sources.

Substiute Parts

SN74HC157PW

Texas InstrumentsIn Stock: 7157SN74HC157PW Datasheet

Current PartRFQ

SN74HC157PWR

Texas InstrumentsIn Stock: 2066SN74HC157PWR Datasheet

DirectRFQ

MC74HC157ADTR2G

onsemiIn Stock: 30260MC74HC157ADTR2G Datasheet

DirectRFQ

74HC157PW,118

Nexperia USA Inc.In Stock: 273274HC157PW,118 Datasheet

UpgradeRFQ

74HC157PW-Q100,118

Nexperia USA Inc.In Stock: 345274HC157PW-Q100,118 Datasheet

MFR RecommendedRFQ

SN74HC158PW

Texas InstrumentsIn Stock: 2822SN74HC158PW Datasheet

Parametric EquivalentRFQ

SN74HC257PW

Texas InstrumentsIn Stock: 1310SN74HC257PW Datasheet

Parametric EquivalentRFQ

SN74HC258PW

Texas InstrumentsIn Stock: 2679SN74HC258PW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74HC157PW is determined by the following critical parameters:

Functional Equivalence Parameters:

• Circuit configuration: 4 x 2:1 multiplexer topology
• Package type: 16-TSSOP surface mount
• Voltage supply range: 2V ~ 6V minimum compatibility
• Output current capability: 7.8mA or greater (high and low)
• Mounting type: Surface mount

Allowed Variation Parameters:

• Manufacturer source (Texas Instruments, onsemi, Nexperia USA Inc.)
• Packaging format (Tube, Cut Tape, Tape & Reel)
• Operating temperature range (may exceed -40°C to 85°C)
• Output current (may exceed 7.8mA specification)
• Product status (Active, Last Time Buy, or Discontinued)

Non-Substitutable Parameters:

• Package case type (must remain 16-TSSOP)
• Circuit topology (must remain 4 x 2:1)
• Voltage supply range (must support 2V ~ 6V minimum)

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Identical Specifications): SN74HC157PWR is the primary direct replacement for SN74HC157PW. Both parts are manufactured by Texas Instruments with identical electrical specifications (7.8mA output current, -40°C to 85°C operating range). The only difference is packaging format: SN74HC157PWR is supplied in Cut Tape & Digi-Reel format instead of Tube, making it suitable for automated assembly processes. This part is currently Active and maintains full compatibility.

Equivalent with Extended Temperature Range: MC74HC157ADTR2G (onsemi) provides identical functional and electrical specifications with an extended operating temperature range (-55°C to 125°C). This part is Active and supplied in Tape & Reel format. Selection of this part is appropriate when designs require broader temperature performance margins.

Upgraded Specifications (Lower Output Current): 74HC157PW,118 and 74HC157PW-Q100,118 (Nexperia USA Inc.) are Active parts with reduced output current specifications (5.2mA versus 7.8mA) and extended operating temperature range (-40°C to 125°C). The Q100 variant includes AEC-Q100 automotive qualification. These parts are suitable for applications where lower output current is acceptable and extended temperature performance is required. Both are supplied in Tape & Reel format.

Parametric Equivalents (Same Base Function, Different Part Numbers): SN74HC158PW, SN74HC257PW, and SN74HC258PW maintain the 4 x 2:1 multiplexer circuit topology and 16-TSSOP package with identical electrical specifications to the main part. These represent alternative part numbers within the 74HC multiplexer family. SN74HC158PW and SN74HC258PW are in Last Time Buy status, while SN74HC257PW is Discontinued at DiGi Electronics, limiting their suitability for new designs.

Compliance and Certifications: All listed parts maintain ROHS3 compliance, Moisture Sensitivity Level 1 (Unlimited), and REACH Unaffected status, ensuring regulatory compatibility across all substitution options.

Frequently Asked Questions (FAQ)

Q: Can I use SN74HC157PWR as a direct replacement for SN74HC157PW? A: Yes. SN74HC157PWR is electrically and functionally identical to SN74HC157PW. The difference is packaging format: SN74HC157PWR uses Cut Tape & Digi-Reel format suitable for automated assembly, while SN74HC157PW uses Tube format. Both maintain identical specifications for voltage supply (2V ~ 6V), output current (7.8mA), and operating temperature (-40°C ~ 85°C).

Q: What is the difference between the Texas Instruments and onsemi versions? A: MC74HC157ADTR2G (onsemi) provides identical output current (7.8mA) and voltage specifications but extends the operating temperature range to -55°C ~ 125°C compared to the Texas Instruments -40°C ~ 85°C range. Both maintain the same 4 x 2:1 circuit topology and 16-TSSOP package.

Q: Why do the Nexperia parts have lower output current (5.2mA)? A: The Nexperia 74HC157PW,118 and 74HC157PW-Q100,118 parts are functionally equivalent but specify reduced output current capability (5.2mA versus 7.8mA). These parts are suitable for applications where the lower current specification meets design requirements. The Q100 variant includes automotive-grade qualification (AEC-Q100).

Q: Can I substitute SN74HC158PW or SN74HC257PW for SN74HC157PW? A: These parts maintain the same 4 x 2:1 multiplexer circuit topology, 16-TSSOP package, and electrical specifications. However, SN74HC158PW is in Last Time Buy status and SN74HC257PW is Discontinued at DiGi Electronics, making them unsuitable for new production designs. Use SN74HC157PWR or MC74HC157ADTR2G for active alternatives.

Q: What packaging formats are available? A: Substitute parts are available in three formats: Tube (SN74HC157PW, SN74HC158PW, SN74HC257PW, SN74HC258PW), Cut Tape & Digi-Reel (SN74HC157PWR), and Tape & Reel (MC74HC157ADTR2G, 74HC157PW,118, 74HC157PW-Q100,118). Selection depends on assembly process requirements and volume.

Q: Are all parts RoHS compliant? A: Yes. All listed parts maintain ROHS3 compliance, Moisture Sensitivity Level 1 (Unlimited), and REACH Unaffected status.

Q: Which part should I select for automotive applications? A: The 74HC157PW-Q100,118 (Nexperia) is qualified to AEC-Q100 automotive standards. This part provides extended operating temperature (-40°C ~ 125°C) and is suitable for automotive-grade designs.