CD74HC154ENG4 Equivalent & Substitute Parts

Part Overview

The CD74HC154ENG4 is a 1 x 4:16 decoder/demultiplexer logic IC manufactured by Texas Instruments in the 74HC series. This component features a single supply voltage range of 2V to 6V and operates across an extended temperature range of -55°C to 125°C. The device is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The 24-DIP through-hole package has been superseded by surface-mount alternatives that maintain identical electrical functionality while offering improved manufacturing efficiency and board density.

Substiute Parts

CD74HC154ENG4

Texas InstrumentsIn Stock: 866CD74HC154ENG4 Datasheet

Current PartRFQ

CD74HC154M96

Texas InstrumentsIn Stock: 26048CD74HC154M96 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74HC154ENG4 is determined by the following criteria:

• Functional Equivalence: Identical decoder/demultiplexer configuration (1 x 4:16) with one independent circuit
• Electrical Compatibility: Matching output current specifications (5.2mA high and low), identical supply voltage range (2V to 6V), and equivalent operating temperature range (-55°C to 125°C)
• Series Compatibility: Membership in the 74HC logic family ensures pin-compatible operation
• Compliance Alignment: ROHS3 compliance and unlimited moisture sensitivity level (MSL 1) maintained across substitutes
• Package Consideration: Substitutes may differ in mounting type (surface mount vs. through-hole) and physical package dimensions, but electrical pinout remains functionally equivalent

The primary substitute CD74HC154M96 maintains all electrical parameters while transitioning from 24-DIP through-hole to 24-SOIC surface-mount packaging.

Parameter Comparison

Engineering Selection Recommendations

The CD74HC154M96 is the direct electrical equivalent for the obsolete CD74HC154ENG4. Both components maintain identical functional specifications, electrical performance, and compliance certifications. The transition from through-hole to surface-mount packaging reflects current manufacturing standards and improves board-level integration density.

Selection of the CD74HC154M96 is appropriate for new designs and production transitions. The active product status ensures long-term availability and supply chain continuity. ROHS3 compliance and unlimited moisture sensitivity level (MSL 1) confirm suitability for standard manufacturing and storage conditions without special handling requirements.

For applications requiring through-hole mounting, alternative 74HC154 variants in DIP packaging from the same manufacturer may be evaluated, provided they maintain the specified electrical parameters and compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can the CD74HC154M96 directly replace the CD74HC154ENG4 in existing designs?

A: Electrical substitution is direct. The CD74HC154M96 maintains identical decoder/demultiplexer functionality, output current specifications, supply voltage range, and operating temperature range. Board-level integration requires accommodation of the different package type: 24-SOIC surface-mount versus 24-DIP through-hole.

Q: What are the key differences between these parts?

A: The primary differences are product status (obsolete vs. active) and packaging format (through-hole vs. surface-mount). All electrical parameters, including output current, supply voltage, temperature range, and logic configuration, remain identical.

Q: Are there compliance or certification differences?

A: No. Both parts maintain ROHS3 compliance, unlimited moisture sensitivity level (MSL 1), and identical REACH and ECCN classifications.

Q: What packaging considerations apply to substitution?

A: The CD74HC154ENG4 uses 24-DIP through-hole packaging (0.300", 7.62mm), while the CD74HC154M96 uses 24-SOIC surface-mount packaging (0.295", 7.50mm width). PCB layout and assembly process modifications are required for package transition.

Q: Is the CD74HC154M96 suitable for high-temperature applications?

A: Yes. The CD74HC154M96 operates across the same extended temperature range as the original part: -55°C to 125°C, maintaining full electrical specifications throughout this range.