74VHC153MTCX Equivalent & Substitute Parts

Part Overview

The 74VHC153MTCX is a dual 4:1 multiplexer logic integrated circuit manufactured by onsemi in a 16-TSSOP surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 74VHC series operates across a 2V to 5.5V supply range with symmetric output drive capabilities of 8mA for both high and low states, suitable for general-purpose logic multiplexing applications requiring low-power operation.

Substiute Parts

74VHC153MTCX

onsemiIn Stock: 395774VHC153MTCX Datasheet

Current PartRFQ

CD74AC153M96

Texas InstrumentsIn Stock: 1210CD74AC153M96 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74VHC153MTCX is determined by the following critical parameters:

• Functional equivalence: Both parts must implement a 2 x 4:1 multiplexer configuration with identical pin functionality
• Logic family compatibility: The 74AC series maintains functional compatibility with 74VHC logic families through common TTL/CMOS interface standards
• Supply voltage overlap: Substitute parts must operate within or encompass the 2V to 5.5V range
• Package compatibility: Physical package dimensions and pin counts must match or be compatible with the original 16-TSSOP footprint
• Output drive capability: Substitute parts must provide sufficient output current for the intended application
• Operating temperature range: Substitute parts should meet or exceed the original temperature specifications

The CD74AC153M96 from Texas Instruments qualifies as a functional substitute based on identical circuit configuration (2 x 4:1 multiplexer), compatible logic family standards, overlapping supply voltage range, and equivalent pin functionality despite different packaging.

Parameter Comparison

Engineering Selection Recommendations

The CD74AC153M96 is suitable as a functional substitute for the obsolete 74VHC153MTCX based on the following engineering criteria:

Functional Compatibility: Both parts implement identical 2 x 4:1 multiplexer logic with equivalent pin assignments and signal routing, ensuring direct functional replacement at the circuit level.

Supply Voltage: The CD74AC153M96 operates across 1.5V to 5.5V, which encompasses the original 2V to 5.5V range. This extended lower voltage limit provides additional design flexibility without compromising compatibility in standard 5V and 3.3V systems.

Output Drive Enhancement: The CD74AC153M96 provides 24mA output drive capability compared to the original 8mA, offering improved fanout capacity and reduced propagation delay characteristics typical of the 74AC logic family.

Temperature Performance: The CD74AC153M96 extends the operating range to -55°C to 125°C, exceeding the original -40°C to 85°C specification and providing broader environmental coverage.

Product Status and Compliance: The CD74AC153M96 maintains active production status with ROHS3 compliance and REACH unaffected designation, ensuring long-term availability and regulatory alignment.

Package Consideration: The CD74AC153M96 uses a 16-SOIC package (0.154", 3.90mm width) compared to the original 16-TSSOP (0.173", 4.40mm width). Both are standard surface mount packages with identical pin counts and compatible footprint spacing, though PCB layout modifications may be required for direct physical replacement.

Frequently Asked Questions (FAQ)

Q: Can the CD74AC153M96 directly replace the 74VHC153MTCX in existing designs?

A: Functional replacement is supported due to identical multiplexer configuration and pin assignments. Physical replacement requires PCB layout adjustment due to different package types (16-SOIC vs. 16-TSSOP). Electrical compatibility is confirmed across the overlapping supply voltage range.

Q: What are the key differences between the 74VHC and 74AC logic families?

A: Both families implement compatible TTL/CMOS logic standards with identical functional behavior. The 74AC family typically provides higher output drive current (24mA vs. 8mA) and extended temperature ranges. Supply voltage ranges overlap sufficiently for direct functional substitution in standard applications.

Q: Does the higher output current of the CD74AC153M96 affect circuit design?

A: The increased output drive capability (24mA vs. 8mA) is a performance enhancement that does not negatively impact existing designs. It provides improved fanout capacity and reduced propagation delays, making it suitable for applications requiring higher current delivery or longer signal paths.

Q: Are there any compliance or regulatory concerns with substitution?

A: Both parts maintain REACH unaffected status and equivalent moisture sensitivity levels (MSL 1). The CD74AC153M96 adds ROHS3 compliance, meeting modern regulatory requirements. No compliance barriers exist for substitution.

Q: What package considerations apply to this substitution?

A: The original 74VHC153MTCX uses 16-TSSOP packaging while the CD74AC153M96 uses 16-SOIC packaging. Both are standard surface mount packages with identical pin counts and compatible pin spacing. PCB footprint modification is required for physical replacement, though electrical and functional compatibility is maintained.

Q: Is the extended temperature range of the CD74AC153M96 beneficial?

A: The CD74AC153M96 operates from -55°C to 125°C compared to the original -40°C to 85°C range. This extended specification provides additional design margin and supports applications requiring broader environmental operation, though it is not required for standard industrial temperature range applications.