74VCX16601MTDX Equivalent & Substitute Parts

Part Overview

The 74VCX16601MTDX is an 18-bit universal bus transceiver manufactured by onsemi, designed for low-voltage logic applications. This component operates across a supply voltage range of 1.4V to 3.6V and is housed in a 56-TSSOP surface mount package. The product is currently classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

74VCX16601MTDX

onsemiIn Stock: 102174VCX16601MTDX Datasheet

Current PartRFQ

SN74ALVCH16601DGGR

Texas InstrumentsIn Stock: 2625SN74ALVCH16601DGGR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74VCX16601MTDX is determined by strict alignment of the following critical parameters:

• Logic Function: Both parts must operate as 18-bit universal bus transceivers
• Output Current Capability: Maintained at 24mA for both high and low outputs
• Package Configuration: Identical 56-TFSOP surface mount package with 0.240" width (6.10mm)
• Pin Count and Pinout: 56-pin TSSOP configuration with compatible signal routing
• Operating Temperature Range: -40°C to 85°C operational window
• Supply Voltage Compatibility: Overlapping voltage ranges that support the system requirements

The SN74ALVCH16601DGGR from Texas Instruments meets all substitution criteria through functional equivalence and package compatibility, despite originating from a different manufacturer and product series.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALVCH16601DGGR is a direct functional equivalent for the obsolete 74VCX16601MTDX. Selection of this substitute is supported by:

• Active Product Status: The Texas Instruments part maintains active production status, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: Both components share identical REACH and ECCN classifications, maintaining compliance posture across supply chains
• RoHS3 Compliance: The SN74ALVCH16601DGGR carries RoHS3 certification, meeting modern environmental standards
• Electrical Equivalence: Matching output current specifications (24mA), operating temperature range (-40°C to 85°C), and identical package footprint enable direct PCB-level substitution
• Supply Voltage Overlap: The substitute's 1.65V to 3.6V range encompasses the critical upper operating window of the original part, with the lower threshold difference immaterial for most 3.3V and 5V logic systems

Frequently Asked Questions (FAQ)

Q: Can the SN74ALVCH16601DGGR be used as a direct replacement on existing PCBs designed for the 74VCX16601MTDX?

A: Yes. Both components share identical 56-TFSOP package geometry, pinout configuration, and electrical output characteristics (24mA drive capability). PCB layout and routing require no modification.

Q: What is the significance of the supply voltage difference (1.4V vs. 1.65V minimum)?

A: The 74VCX16601MTDX supports operation down to 1.4V, while the SN74ALVCH16601DGGR minimum is 1.65V. For systems operating at 3.3V or 5V logic levels, this difference is not functionally relevant. Applications requiring sub-1.65V operation must retain the original part or identify alternative solutions.

Q: Why is the original part classified as obsolete?

A: Obsolescence reflects onsemi's discontinuation of this product line. The Texas Instruments 74ALVCH series represents the active equivalent technology, offering improved supply chain availability and long-term support.

Q: Are there any thermal or reliability differences between these parts?

A: Both components operate across the identical -40°C to 85°C temperature range and carry MSL 1 (unlimited moisture sensitivity) ratings. No thermal or reliability trade-offs are introduced by substitution.

Q: What packaging format is the SN74ALVCH16601DGGR supplied in?

A: The SN74ALVCH16601DGGR is supplied in Tape & Reel (TR) format, standard for high-volume production environments. The component itself maintains the 56-TSSOP package specification.