CD74HC154E Equivalent & Substitute Parts

Part Overview

The CD74HC154E is a 1 x 4:16 decoder/demultiplexer logic integrated circuit manufactured by Texas Instruments in the 74HC series. This device is classified as obsolete, making equivalent substitute parts necessary for new designs and production applications. The CD74HC154E operates as a single decoder/demultiplexer circuit with 24-pin DIP through-hole packaging, suitable for applications requiring address decoding and signal demultiplexing in digital logic systems.

Substiute Parts

CD74HC154E

Texas InstrumentsIn Stock: 1746CD74HC154E Datasheet

Current PartRFQ

CD74HC154M96

Texas InstrumentsIn Stock: 26048CD74HC154M96 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74HC154E is determined by the following critical parameters that must remain constant across equivalent parts:

• Circuit configuration: 1 x 4:16 decoder/demultiplexer topology
• Output current specifications: 5.2mA high and low
• Supply voltage range: 2V to 6V single supply
• Operating temperature range: -55°C to 125°C
• Base product number: 74HC154
• Regulatory compliance: ROHS3 and REACH status

The primary substitute, CD74HC154M96, maintains identical electrical specifications and functional performance while differing only in packaging format (24-SOIC surface mount versus 24-DIP through hole) and product status (active versus obsolete). This substitution is valid for applications where surface-mount assembly is acceptable.

Parameter Comparison

Engineering Selection Recommendations

The CD74HC154M96 is the direct functional equivalent to the CD74HC154E. Selection between these parts is determined by assembly methodology and board design requirements:

For through-hole assembly applications, the CD74HC154E remains available with 1645 pieces in stock, though its obsolete status indicates limited future availability.

For surface-mount assembly applications, the CD74HC154M96 is the appropriate selection. This part maintains identical electrical performance and regulatory compliance while offering active product status and significantly higher inventory availability (25,990 pieces in stock). The 24-SOIC package is compatible with standard surface-mount assembly processes.

Both parts satisfy ROHS3 and REACH compliance requirements and operate across the full -55°C to 125°C temperature range with identical supply voltage specifications.

Frequently Asked Questions (FAQ)

Q: Can CD74HC154M96 replace CD74HC154E in existing designs?

A: Electrical and functional replacement is complete. The CD74HC154M96 provides identical decoder/demultiplexer performance with matching output current, supply voltage range, and operating temperature specifications. Board-level integration requires surface-mount assembly capability instead of through-hole assembly.

Q: What is the primary difference between these parts?

A: The CD74HC154E uses 24-DIP through-hole packaging while the CD74HC154M96 uses 24-SOIC surface-mount packaging. All electrical specifications, circuit configuration, and performance parameters are identical.

Q: Why is the CD74HC154E listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production. The CD74HC154M96 maintains the same 74HC154 base product number in an active, currently manufactured package format.

Q: Are there compatibility concerns with package substitution?

A: Package substitution requires corresponding changes to printed circuit board layout and assembly process. Through-hole and surface-mount packages are not interchangeable on the same board design without redesign.

Q: Do both parts meet current regulatory requirements?

A: Both the CD74HC154E and CD74HC154M96 are ROHS3 compliant and REACH unaffected, meeting current regulatory standards for electronic component manufacturing and use.

Q: What output current specifications apply to both parts?

A: Both parts provide 5.2mA output current for high and low logic states, maintaining identical drive capability for connected logic circuits.