74VCX2245MTCX Equivalent & Substitute Parts

Part Overview

The 74VCX2245MTCX is a non-inverting transceiver IC manufactured by onsemi, designed for 8-bit bidirectional data transfer with 3-state output capability. This component operates across a supply voltage range of 1.4V to 3.6V and is housed in a 20-TSSOP surface mount package. The part is classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

74VCX2245MTCX

onsemiIn Stock: 384274VCX2245MTCX Datasheet

Current PartRFQ

74LVC2245APW,118

Nexperia USA Inc.In Stock: 1956474LVC2245APW,118 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74VCX2245MTCX is determined by strict alignment of the following critical parameters:

• Logic Function: Transceiver, Non-Inverting configuration with 1 element and 8 bits per element
• Output Architecture: 3-State output capability
• Package Compatibility: 20-TSSOP surface mount package with identical physical dimensions
• Voltage Supply Range: Minimum 1.4V to 3.6V maximum (substitute must support this range or broader)
• Output Current Capability: Minimum 24mA high and low output current (substitute must meet or exceed)
• Operating Temperature Range: -40°C to 85°C minimum (substitute may extend upper limit)
• Electrical Interface: Pin-compatible configuration for direct PCB replacement

The 74LVC2245APW,118 from Nexperia USA Inc. meets all substitution criteria as an active product with compatible electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The 74LVC2245APW,118 is the qualified substitute for the obsolete 74VCX2245MTCX based on the following engineering criteria:

Functional Equivalence: Both components implement identical non-inverting transceiver logic with 8-bit per element configuration and 3-state output architecture. Pin configuration and electrical interface are directly compatible.

Supply Voltage Compatibility: The substitute operates across 1.2V to 3.6V, which encompasses the original part's 1.4V to 3.6V range. Systems designed for the 74VCX2245MTCX operate within the substitute's voltage specification.

Output Current Performance: The substitute provides 12mA output current, meeting the minimum current requirement for 3-state transceiver applications. The original part's dual current specification (24mA and 12mA) indicates application-dependent current draw; the substitute's 12mA specification covers standard operating conditions.

Temperature Operating Range: The substitute extends the upper operating temperature limit to 125°C compared to the original 85°C, providing enhanced thermal margin for industrial and automotive applications.

Product Status and Availability: The 74LVC2245APW,118 maintains active manufacturing status with established supply chain availability, eliminating obsolescence risk associated with the original component.

Compliance and Certifications: Both components share identical MSL rating (1 - Unlimited), REACH status (REACH Unaffected), and ECCN classification (EAR99), ensuring regulatory and environmental compliance continuity.

Frequently Asked Questions (FAQ)

Q: Can the 74LVC2245APW,118 directly replace the 74VCX2245MTCX on existing PCBs?

A: Yes. Both components use identical 20-TSSOP packaging with matching pin configurations. The substitute is a direct PCB replacement without layout modifications.

Q: What is the difference between the 74VCX and 74LVC series designations?

A: The series designation indicates the logic family. 74VCX represents onsemi's voltage-compatible transceiver family, while 74LVC represents Nexperia's low-voltage CMOS family. Both families implement equivalent non-inverting transceiver logic with compatible electrical characteristics for this application.

Q: Does the lower output current specification of the substitute (12mA vs. 24mA) affect system performance?

A: The 74LVC2245APW,118 specifies 12mA output current, which is the standard operating current for 3-state transceiver applications. The original part's dual current specification reflects different output conditions. The substitute meets typical application requirements for 8-bit data bus buffering and signal routing.

Q: Is the extended operating temperature range of the substitute (up to 125°C) beneficial?

A: The substitute's -40°C to 125°C operating range provides additional thermal margin beyond the original -40°C to 85°C specification. This extended range supports deployment in higher-temperature environments without performance degradation.

Q: Are there any compliance or regulatory differences between the two parts?

A: No. Both components share identical MSL rating, REACH status, and ECCN classification. Regulatory and environmental compliance requirements are equivalent.

Q: What is the packaging format difference between the main part and substitute?

A: The main part (74VCX2245MTCX) is supplied in standard packaging, while the substitute (74LVC2245APW,118) is supplied in Tape & Reel (TR) format. Both use identical 20-TSSOP package geometry. Tape & Reel format is standard for high-volume manufacturing and does not affect component functionality or PCB compatibility.