SN74HC151PW Equivalent & Substitute Parts

Part Overview

The SN74HC151PW is a 1 x 8:1 multiplexer logic integrated circuit manufactured by Texas Instruments in a 16-TSSOP surface mount package. This part is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and procurement. The SN74HC151PW operates from a single supply voltage of 2V to 6V with an operating temperature range of -40°C to 85°C, delivering 7.8mA output current capability for both high and low states.

Substiute Parts

SN74HC151PW

Texas InstrumentsIn Stock: 1219SN74HC151PW Datasheet

Current PartRFQ

SN74HC151PWR

Texas InstrumentsIn Stock: 4140SN74HC151PWR Datasheet

DirectRFQ

SN74HC251PW

Texas InstrumentsIn Stock: 6499SN74HC251PW Datasheet

Parametric EquivalentRFQ

MC74HC151ADTR2G

onsemiIn Stock: 1938MC74HC151ADTR2G Datasheet

DirectRFQ

74HC151PW,118

Nexperia USA Inc.In Stock: 1319674HC151PW,118 Datasheet

MFR RecommendedRFQ

74HC151PW-Q100,118

Nexperia USA Inc.In Stock: 611574HC151PW-Q100,118 Datasheet

MFR RecommendedRFQ

MC74HC151ADTG

onsemiIn Stock: 1522MC74HC151ADTG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74HC151PW are grouped based on strict electrical and mechanical compatibility. The primary substitution criteria are:

Critical Parameters for Substitution:

• Circuit configuration: 1 x 8:1 multiplexer topology
• Package type: 16-TSSOP surface mount
• Supply voltage range: 2V ~ 6V
• Independent circuits: 1
• RoHS compliance: ROHS3 Compliant

Substitution Categories:

Direct Manufacturer Equivalent (Packaging Variant): SN74HC151PWR differs from the main part only in packaging format (Cut Tape & Digi-Reel versus Tube), maintaining identical electrical specifications and active product status.

Parametric Equivalent (Base Number Variant): SN74HC251PW shares the same 1 x 8:1 multiplexer circuit and electrical parameters but uses a different base product number within the 74HC series. This part is discontinued at DiGi Electronics.

Cross-Manufacturer Direct Equivalents: MC74HC151ADTR2G (onsemi, Tape & Reel) and MC74HC151ADTG (onsemi, Tube) provide identical 1 x 8:1 multiplexer functionality with active product status. Output current is 5.2mA (versus 7.8mA for Texas Instruments variants), and operating temperature extends to 125°C.

Manufacturer Recommended Alternatives: 74HC151PW,118 and 74HC151PW-Q100,118 (Nexperia USA Inc.) are manufacturer-recommended substitutes with active product status. The Q100 variant includes AEC-Q100 automotive qualification. Both deliver 5.2mA output current and support -40°C to 125°C operating range.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Active Product Status): SN74HC151PWR is the primary recommendation as a direct Texas Instruments equivalent with identical electrical specifications and active product status. This part maintains the 7.8mA output current and -40°C to 85°C operating range of the original SN74HC151PW, differing only in packaging format (Cut Tape & Digi-Reel).

For Extended Temperature Range Applications: MC74HC151ADTR2G and MC74HC151ADTG (onsemi) or 74HC151PW,118 and 74HC151PW-Q100,118 (Nexperia) support operating temperatures to 125°C. These parts reduce output current to 5.2mA and are suitable for applications requiring wider temperature operation. All four options maintain active product status and ROHS3 compliance.

For Automotive Applications: 74HC151PW-Q100,118 is the only substitute with AEC-Q100 automotive qualification, making it the required choice for automotive-grade designs. This part combines extended temperature range (-40°C to 125°C) with automotive qualification.

For Parametric Equivalence: SN74HC251PW provides identical electrical performance as the main part but uses a different base product number. This part is discontinued at DiGi Electronics and should be selected only when existing designs specifically reference the 74HC251 variant.

Frequently Asked Questions (FAQ)

Q: Can SN74HC151PWR be used as a direct replacement for SN74HC151PW?

A: Yes. SN74HC151PWR is electrically identical to SN74HC151PW with the same 7.8mA output current, 2V to 6V supply voltage, and -40°C to 85°C operating temperature. The only difference is packaging format: SN74HC151PWR is supplied in Cut Tape & Digi-Reel format while SN74HC151PW is supplied in Tube format. Both are 16-TSSOP surface mount packages with identical pinouts.

Q: What is the difference between the Texas Instruments and onsemi versions?

A: Texas Instruments SN74HC151PW and SN74HC151PWR deliver 7.8mA output current with -40°C to 85°C operating range. onsemi MC74HC151ADTR2G and MC74HC151ADTG deliver 5.2mA output current with extended -55°C to 125°C operating range. Both maintain identical 1 x 8:1 multiplexer circuit topology and 16-TSSOP packaging. The reduced output current and extended temperature range of onsemi parts may require circuit evaluation for current-sensitive applications.

Q: Are the Nexperia parts suitable for automotive applications?

A: The 74HC151PW-Q100,118 variant includes AEC-Q100 automotive qualification and is suitable for automotive applications. The standard 74HC151PW,118 does not carry automotive qualification. Both Nexperia parts deliver 5.2mA output current and support -40°C to 125°C operating temperature.

Q: What does the ",118" designation in Nexperia part numbers indicate?

A: The ",118" designation indicates the specific packaging and tape format used by Nexperia for this part. It is part of the complete manufacturer part number and must be included when ordering.

Q: Can I substitute SN74HC251PW for SN74HC151PW?

A: SN74HC251PW is a parametric equivalent with identical electrical specifications and 16-TSSOP packaging. However, it uses a different base product number (74HC251 versus 74HC151) and is discontinued at DiGi Electronics. Substitution is possible from an electrical standpoint but not recommended due to discontinued status. Active alternatives such as SN74HC151PWR or Nexperia 74HC151PW,118 are preferred.

Q: What is the impact of reduced output current (5.2mA versus 7.8mA) when using onsemi or Nexperia substitutes?

A: The 5.2mA output current from onsemi and Nexperia parts is lower than the 7.8mA from Texas Instruments variants. Applications with high-impedance loads or long signal paths may require circuit evaluation to ensure adequate signal integrity and noise margins. Low-impedance loads typical in standard logic applications are generally unaffected.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed—SN74HC151PWR, SN74HC251PW, MC74HC151ADTR2G, MC74HC151ADTG, 74HC151PW,118, and 74HC151PW-Q100,118—are ROHS3 compliant and REACH unaffected.