SN74HC151PWT Equivalent & Substitute Parts

Part Overview

The SN74HC151PWT 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 SN74HC151PWT operates from a single 2V to 6V supply with output currents of 7.8mA (high and low), serving applications requiring data selection and routing in digital logic circuits.

Substiute Parts

SN74HC151PWT

Texas InstrumentsIn Stock: 1182SN74HC151PWT Datasheet

Current PartRFQ

SN74HC151PWR

Texas InstrumentsIn Stock: 4140SN74HC151PWR Datasheet

Parametric EquivalentRFQ

SN74HC251PWR

Texas InstrumentsIn Stock: 5402SN74HC251PWR Datasheet

Parametric EquivalentRFQ

SN74HC251PWT

Texas InstrumentsIn Stock: 2176SN74HC251PWT 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

Substitution for the SN74HC151PWT is determined by the following critical parameters: multiplexer circuit configuration (1 x 8:1), package type (16-TSSOP surface mount), voltage supply range (2V ~ 6V), and RoHS3 compliance. Parts are grouped into three categories based on substitution relationship and product status:

Parametric Equivalents (Texas Instruments 74HC151 Series): SN74HC151PWR and SN74HC251PWR maintain identical electrical specifications and package dimensions. SN74HC151PWR is active and available in higher quantities. SN74HC251PWR differs only in base product number but shares all functional and electrical parameters.

Direct Manufacturer Alternatives (onsemi 74HC151 Series): MC74HC151ADTR2G and MC74HC151ADTG provide functional equivalence with extended operating temperature range (-55°C ~ 125°C) and reduced output current specifications (5.2mA vs. 7.8mA). Both are active products from onsemi.

Manufacturer Recommended Alternatives (Nexperia 74HC151 Series): 74HC151PW,118 and 74HC151PW-Q100,118 are Nexperia equivalents with identical circuit configuration and package. The Q100 variant includes AEC-Q100 automotive qualification. Output current is 5.2mA, and operating temperature extends to 125°C.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): SN74HC151PWR is the primary active equivalent from Texas Instruments, maintaining all electrical and thermal specifications of the SN74HC151PWT. This part is available in higher inventory (4034 pcs) and carries active product status.

For Extended Temperature Range Applications: MC74HC151ADTR2G and MC74HC151ADTG from onsemi extend the operating temperature range to -55°C ~ 125°C, suitable for industrial and wide-temperature applications. Output current is reduced to 5.2mA, which is acceptable for most logic-level applications.

For Automotive and High-Reliability Applications: 74HC151PW-Q100,118 from Nexperia includes AEC-Q100 automotive qualification and extends operating temperature to 125°C. This variant is recommended for automotive-grade designs requiring formal qualification documentation.

For Packaging Flexibility: SN74HC251PWR and SN74HC251PWT provide functional equivalence with Tape & Reel packaging, suitable for high-volume automated assembly. MC74HC151ADTG is available in Tube packaging for lower-volume or manual assembly processes.

All substitute parts maintain RoHS3 compliance, REACH unaffected status, and identical 16-TSSOP package dimensions, ensuring PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can SN74HC151PWR be used as a direct replacement for SN74HC151PWT? A: Yes. SN74HC151PWR is a direct parametric equivalent with identical voltage supply range (2V ~ 6V), output current (7.8mA), operating temperature (-40°C ~ 85°C), and 16-TSSOP package. The primary difference is product status (active vs. discontinued) and packaging format (Cut Tape & Digi-Reel vs. standard reel).

Q: What is the difference between SN74HC151 and SN74HC251? A: Both are 1 x 8:1 multiplexers with identical electrical specifications and package dimensions. The base product numbers differ, but they are functionally equivalent for this application. SN74HC251PWR is available in higher quantities.

Q: Can onsemi MC74HC151ADTR2G replace the SN74HC151PWT in all applications? A: MC74HC151ADTR2G is functionally compatible with identical circuit configuration and voltage supply range. However, output current is reduced from 7.8mA to 5.2mA, and operating temperature extends to -55°C ~ 125°C. Verify that reduced output current meets your load requirements before substitution.

Q: What is the significance of the AEC-Q100 qualification on 74HC151PW-Q100,118? A: AEC-Q100 qualification indicates the part meets automotive industry reliability and quality standards. This variant is required for automotive applications or designs requiring formal automotive-grade component certification.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts maintain RoHS3 compliance and REACH unaffected status, matching the environmental compliance of the original SN74HC151PWT.

Q: Does packaging format (Cut Tape vs. Tape & Reel vs. Tube) affect electrical performance? A: No. Packaging format affects only handling, storage, and assembly processes. Electrical specifications and performance are identical across all packaging formats for the same part number base.

Q: Which substitute offers the best availability? A: 74HC151PW,118 from Nexperia has the highest inventory (13,164 pcs) and active product status, making it the most readily available substitute for immediate procurement.