74HC154N,652 Equivalent & Substitute Parts

Part Overview

The 74HC154N,652 is a decoder/demultiplexer logic integrated circuit manufactured by NXP USA Inc. in a 24-DIP through-hole package. This component functions as a 1 x 4:16 decoder, converting 4-bit binary input to 16 individual output lines. The product is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements.

Substiute Parts

74HC154N,652

NXP USA Inc.In Stock: 94974HC154N,652 Datasheet

Current PartRFQ

CD74HC154M

Texas InstrumentsIn Stock: 1485CD74HC154M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HC154N,652 is determined by the following critical parameters:

• Functional Equivalence: Decoder/Demultiplexer type with 1 x 4:16 circuit configuration
• Electrical Compatibility: Output current (5.2mA high/low), supply voltage range (2V ~ 6V), and operating temperature range
• Series Compatibility: 74HC logic family designation
• Package Consideration: Original through-hole 24-DIP package; surface-mount alternatives available with identical electrical specifications

The CD74HC154M from Texas Instruments meets all electrical and functional requirements while offering improved availability as a last-time-buy product. This substitute maintains the same decoder/demultiplexer functionality, output current ratings, and voltage supply specifications, with an extended operating temperature range of -55°C ~ 125°C.

Parameter Comparison

Engineering Selection Recommendations

The CD74HC154M is a direct functional substitute for the 74HC154N,652 based on identical electrical specifications and 74HC series compatibility. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Selection between these parts depends on application requirements:

• Through-Hole Applications: The 74HC154N,652 maintains the original 24-DIP package format. Availability is limited due to obsolete status.
• Surface-Mount Applications: The CD74HC154M in 24-SOIC package provides equivalent functionality with extended temperature range (-55°C ~ 125°C) and improved availability as a last-time-buy product.

Both components operate within identical voltage supply ranges (2V ~ 6V) and deliver equivalent output current specifications (5.2mA high/low). The choice between DIP and SOIC packaging depends on PCB design and manufacturing capabilities.

Frequently Asked Questions (FAQ)

Q: Can CD74HC154M replace 74HC154N,652 in existing through-hole designs?

A: CD74HC154M is electrically equivalent but uses 24-SOIC surface-mount packaging instead of 24-DIP through-hole. Direct board-level substitution requires PCB redesign or use of an adapter. For through-hole applications, the 74HC154N,652 remains the appropriate choice if available.

Q: What is the functional difference between these decoder/demultiplexer parts?

A: Both parts perform identical 1 x 4:16 decoder/demultiplexer functions with matching output current ratings and voltage supply specifications. No functional difference exists between the two components.

Q: Are there temperature range differences between these parts?

A: The CD74HC154M operates across -55°C ~ 125°C, while the 74HC154N,652 operates across -40°C ~ 125°C. The CD74HC154M provides extended low-temperature operation, making it suitable for wider environmental applications.

Q: Do both parts meet current compliance standards?

A: Yes. Both the 74HC154N,652 and CD74HC154M are ROHS3 compliant, REACH unaffected, and carry EAR99 ECCN classification.

Q: What packaging considerations apply to substitution?

A: The primary difference is mounting type: 74HC154N,652 uses through-hole 24-DIP (0.600", 15.24mm), while CD74HC154M uses surface-mount 24-SOIC (0.295", 7.50mm width). Package selection depends on PCB design methodology and manufacturing equipment.