74HCT251D-Q100J Equivalent & Substitute Parts

Part Overview

The 74HCT251D-Q100J is a logic multiplexer IC manufactured by Nexperia USA Inc., configured as a 1 x 8:1 multiplexer in a 16-SOIC surface mount package. This component is classified as an active product with automotive-grade qualification (AEC-Q100) and is ROHS3 compliant. Equivalent and substitute parts are identified based on matching electrical specifications, package compatibility, and operational parameters to ensure direct functional replacement in circuit designs.

Substiute Parts

74HCT251D-Q100J

Nexperia USA Inc.In Stock: 73874HCT251D-Q100J Datasheet

Current PartRFQ

74HCT151D,653

Nexperia USA Inc.In Stock: 349374HCT151D,653 Datasheet

Parametric EquivalentRFQ

74HCT251D,653

Nexperia USA Inc.In Stock: 315274HCT251D,653 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74HCT251D-Q100J are identified based on the following critical parameters that determine functional equivalence:

• Circuit Configuration: 1 x 8:1 multiplexer topology
• Output Current Capability: 4mA high and low output current
• Supply Voltage Range: 4.5V ~ 5.5V single supply operation
• Operating Temperature Range: -40°C ~ 125°C
• Package Compatibility: 16-SOIC surface mount package (0.154", 3.90mm width)
• Compliance Standards: ROHS3 compliant, REACH unaffected, EAR99 classification

The 74HCT251D,653 and 74HCT151D,653 meet all specified electrical and mechanical parameters and are therefore classified as parametric equivalents. Both parts maintain identical supply voltage specifications, output current ratings, temperature operating range, and package form factor.

Parameter Comparison

Engineering Selection Recommendations

All three parts—74HCT251D-Q100J, 74HCT251D,653, and 74HCT151D,653—are active products with identical electrical specifications and package compatibility. Selection between these parts is based on availability and product status:

• 74HCT251D-Q100J: Primary specification with automotive-grade qualification (AEC-Q100). Recommended for applications requiring explicit automotive certification.
• 74HCT251D,653: Parametric equivalent with identical specifications. Suitable for direct substitution where automotive qualification is not mandated.
• 74HCT151D,653: Parametric equivalent with identical specifications. Suitable for direct substitution where automotive qualification is not mandated.

All parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 export classification. No additional testing or design modification is required for substitution between these parts.

Frequently Asked Questions (FAQ)

Q: Can 74HCT151D,653 be used as a direct replacement for 74HCT251D-Q100J?

A: Yes. Both parts share identical electrical specifications including 1 x 8:1 multiplexer configuration, 4mA output current capability, 4.5V ~ 5.5V supply voltage range, -40°C ~ 125°C operating temperature, and 16-SOIC package form factor. The primary difference is the automotive-grade qualification (AEC-Q100) on the 74HCT251D-Q100J variant.

Q: What is the difference between 74HCT251D,653 and 74HCT151D,653?

A: Both parts are parametric equivalents with identical electrical and mechanical specifications. The difference lies in the base product number designation (74HCT251 versus 74HCT151), but they maintain the same circuit configuration, output current ratings, supply voltage, temperature range, and package compatibility.

Q: Are all three parts compatible with the same PCB layout?

A: Yes. All three parts use the 16-SOIC surface mount package with identical pin spacing (0.154", 3.90mm width). PCB layouts and footprints are directly interchangeable.

Q: Does substitution require any circuit design changes?

A: No. All three parts operate within identical voltage supply ranges (4.5V ~ 5.5V), output current specifications (4mA), and temperature ranges (-40°C ~ 125°C). No circuit modifications are necessary for substitution.

Q: What is the significance of the AEC-Q100 qualification on 74HCT251D-Q100J?

A: AEC-Q100 is an automotive-grade qualification standard. The 74HCT251D-Q100J meets this certification, making it suitable for automotive applications requiring explicit qualification documentation. The other variants are not marked with this qualification.

Q: Are all parts ROHS3 compliant?

A: Yes. All three parts—74HCT251D-Q100J, 74HCT251D,653, and 74HCT151D,653—are ROHS3 compliant and REACH unaffected.