CD74HC154EN Equivalent & Substitute Parts

Part Overview

The CD74HC154EN 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 CD74HC154EN operates as a single-supply decoder with 24 pins in a through-hole DIP package configuration. Identifying compatible substitutes requires matching the core functional specifications while accounting for packaging and mounting differences.

Substiute Parts

CD74HC154EN

Texas InstrumentsIn Stock: 1261CD74HC154EN Datasheet

Current PartRFQ

CD74HC154M96

Texas InstrumentsIn Stock: 26048CD74HC154M96 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74HC154EN is determined by matching the following critical parameters:

• Functional Circuit: 1 x 4:16 decoder/demultiplexer configuration
• Base Product Number: 74HC154 series
• Electrical Specifications: Output current (5.2mA high/low), supply voltage range (2V ~ 6V), operating temperature (-55°C ~ 125°C)
• Compliance: RoHS3 compliance, REACH unaffected status, EAR99 classification

The primary substitute CD74HC154M96 maintains identical electrical and functional specifications while differing only in mounting technology (surface mount SOIC package versus through-hole DIP package). This substitution is valid for applications where PCB assembly methods support surface-mount components.

Parameter Comparison

Engineering Selection Recommendations

The CD74HC154M96 is the direct functional equivalent of the CD74HC154EN. Both devices share identical electrical specifications, functional circuit configuration, and compliance certifications. The CD74HC154M96 carries active product status from Texas Instruments, ensuring continued availability and support compared to the obsolete CD74HC154EN.

Selection between these parts depends on PCB assembly capability and design requirements:

• CD74HC154EN: Through-hole DIP package suitable for breadboard prototyping, legacy designs, or manual assembly processes. Obsolete status limits future availability.
• CD74HC154M96: Surface-mount SOIC package suitable for automated PCB assembly and modern production environments. Active product status ensures long-term availability.

Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating, making them suitable for standard industrial and commercial applications within the specified operating temperature and voltage ranges.

Frequently Asked Questions (FAQ)

Q: Can CD74HC154M96 replace CD74HC154EN in existing designs?

A: Functionally, yes. Both devices implement identical 1 x 4:16 decoder/demultiplexer logic with matching electrical specifications. The primary difference is packaging: CD74HC154M96 uses surface-mount SOIC while CD74HC154EN uses through-hole DIP. PCB layout and assembly method must accommodate the surface-mount package.

Q: What is the significance of the obsolete status for CD74HC154EN?

A: Obsolete status indicates Texas Instruments has discontinued active production and support. CD74HC154M96 maintains active status, ensuring continued manufacturing, technical support, and long-term availability for new designs and production runs.

Q: Are the electrical specifications identical between these parts?

A: Yes. Both devices operate at 2V ~ 6V supply voltage, deliver 5.2mA output current (high and low), and function across -55°C ~ 125°C operating temperature. Functional circuit configuration, pin count, and logic behavior are identical.

Q: What compliance certifications apply to both parts?

A: Both CD74HC154EN and CD74HC154M96 are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. Both carry unlimited moisture sensitivity rating (MSL 1).

Q: Does package size affect electrical performance?

A: No. The 24-DIP and 24-SOIC packages contain identical silicon dies with equivalent electrical performance. Package selection is determined by PCB assembly technology and design requirements, not electrical capability.