74HC154DB,118 Equivalent & Substitute Parts

Part Overview

The 74HC154DB,118 is a decoder/demultiplexer integrated circuit manufactured by Nexperia USA Inc., designed for 1 x 4:16 logic decoding applications. This component operates as a single-supply device with output capabilities of 5.2mA for both high and low states. The part is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design requirements and procurement planning.

Substiute Parts

74HC154DB,118

Nexperia USA Inc.In Stock: 79074HC154DB,118 Datasheet

Current PartRFQ

74HC154PW,118

Nexperia USA Inc.In Stock: 2870874HC154PW,118 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74HC154DB,118 is determined by the following critical parameters:

• Functional Circuit Configuration: 1 x 4:16 decoder/demultiplexer topology
• Output Current Specifications: 5.2mA high and low output current capability
• Supply Voltage Range: 2V ~ 6V single-supply operation
• Operating Temperature Range: -40°C ~ 125°C
• Base Product Number: 74HC154 series designation
• Electrical Compliance: RoHS3 compliance and REACH unaffected status

The 74HC154PW,118 qualifies as a direct functional substitute based on identical electrical specifications and circuit configuration. The primary distinction lies in packaging format and product status, not in electrical performance or functional capability.

Parameter Comparison

Engineering Selection Recommendations

The 74HC154PW,118 is the qualified substitute for the obsolete 74HC154DB,118. Both components maintain identical electrical specifications, functional circuit configuration, and compliance certifications. The substitute part carries active product status, ensuring continued availability and supply chain reliability.

The primary design consideration is the package format difference: the substitute uses 24-TSSOP (0.173" width) versus the original 24-SSOP (0.209" width). This represents a narrower package footprint and requires PCB layout verification to confirm physical compatibility with existing board designs.

Both parts satisfy RoHS3 compliance requirements and carry unlimited moisture sensitivity classification, indicating no special handling requirements during assembly and storage.

Frequently Asked Questions (FAQ)

Q: Can the 74HC154PW,118 be used as a direct replacement for the 74HC154DB,118?

A: Yes, from an electrical and functional standpoint. Both parts share identical circuit configuration (1 x 4:16), output current specifications (5.2mA), supply voltage range (2V ~ 6V), and operating temperature range (-40°C ~ 125°C). PCB layout modification is required due to package width difference (24-TSSOP versus 24-SSOP).

Q: What is the primary difference between these two parts?

A: The 74HC154DB,118 uses a 24-SSOP package with 0.209" width, while the 74HC154PW,118 uses a 24-TSSOP package with 0.173" width. The substitute offers a more compact footprint. Electrical performance is identical.

Q: Why is the original part listed as obsolete?

A: The 74HC154DB,118 carries obsolete product status. The 74HC154PW,118 maintains active status, providing continued manufacturer support and supply availability.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 (unlimited) moisture sensitivity classification.

Q: What packaging formats are available for each part?

A: The 74HC154DB,118 is supplied in standard packaging. The 74HC154PW,118 is available in Cut Tape (CT) and Digi-Reel® formats, offering flexibility for different procurement volumes and assembly processes.