74VCX2245WM Equivalent & Substitute Parts

Part Overview

The 74VCX2245WM is a non-inverting transceiver logic IC manufactured by onsemi, designed for 8-bit data bus applications with 3-state output capability. This device operates across a supply voltage range of 1.4V to 3.6V and is housed in a 20-SOIC package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

74VCX2245WM

onsemiIn Stock: 76974VCX2245WM Datasheet

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74ALVC245D,118

NXP USA Inc.In Stock: 911874ALVC245D,118 Datasheet

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SN74ALVC245DW

Texas InstrumentsIn Stock: 1592SN74ALVC245DW Datasheet

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SN74ALVC245DWR

Texas InstrumentsIn Stock: 2309SN74ALVC245DWR Datasheet

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SN74ALVCH245DW

Texas InstrumentsIn Stock: 1324SN74ALVCH245DW Datasheet

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SN74ALVCH245DWR

Texas InstrumentsIn Stock: 2922SN74ALVCH245DWR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74VCX2245WM is determined by the following critical parameters:

• Logic Function: Non-inverting transceiver with 1 element, 8 bits per element, and 3-state output capability
• Package Compatibility: 20-SOIC form factor with identical 0.295" (7.50mm) width
• Electrical Characteristics: Output current capability of 24mA (high and low), operating temperature range of -40°C to 85°C
• Supply Voltage Range: Minimum 1.65V to 3.6V (substitute parts operate within or above the original 1.4V minimum)
• Mounting Type: Surface mount configuration

All identified substitute parts maintain functional equivalence across these parameters. The 74ALVC and 74ALVCH series from Texas Instruments and NXP USA Inc. provide direct functional replacement with active product status and modern compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain functional and electrical equivalence to the 74VCX2245WM. Selection among alternatives should be based on the following factors:

Product Status: All substitute parts carry active product status, ensuring long-term availability and manufacturing support. The original 74VCX2245WM is obsolete and should not be specified for new designs.

Compliance and Certifications: Texas Instruments SN74ALVC245DW, SN74ALVC245DWR, SN74ALVCH245DW, and SN74ALVCH245DWR variants are ROHS3 compliant with REACH unaffected status. The NXP 74ALVC245D,118 does not specify RoHS compliance in the provided data.

Packaging Options: Texas Instruments offers both tube (DW suffix) and tape & reel (DWR suffix) packaging. NXP provides bulk packaging. Selection depends on assembly requirements and volume considerations.

Supply Voltage Consideration: Substitute parts operate at a minimum of 1.65V compared to the original 1.4V minimum. Applications requiring operation below 1.65V cannot use these substitutes.

Series Selection: The 74ALVC series provides standard performance, while the 74ALVCH series offers enhanced characteristics. Both are functionally equivalent for the specified parameters.

Frequently Asked Questions (FAQ)

Q: Can the 74ALVC245 series directly replace the 74VCX2245WM in existing designs?

A: Yes, the 74ALVC245 and 74ALVCH245 series provide direct functional replacement. All critical parameters including logic type, bit width, output type, current capability, operating temperature, and package form factor are equivalent. The primary consideration is the minimum supply voltage: substitute parts require 1.65V minimum versus 1.4V for the original part.

Q: What is the difference between the DW and DWR packaging suffixes?

A: DW indicates tube packaging, while DWR indicates tape & reel packaging. Both contain identical die and functionality. Selection depends on assembly process requirements and volume handling.

Q: Are the Texas Instruments and NXP parts interchangeable?

A: Yes, all substitute parts listed are functionally interchangeable based on the provided electrical and mechanical parameters. Selection can be based on availability, packaging preference, and compliance certifications.

Q: Why do substitute parts specify 1.65V minimum supply voltage instead of 1.4V?

A: The 74ALVC and 74ALVCH series are designed with a higher minimum supply voltage specification. Applications operating at 1.4V to 1.65V require the original 74VCX2245WM or equivalent parts with matching low-voltage specifications.

Q: What is the significance of ROHS3 compliance?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting the use of specific hazardous materials. This is relevant for applications subject to environmental regulations in the European Union and similar jurisdictions.

Q: Can I use these parts interchangeably in the same PCB assembly?

A: Yes, all substitute parts use the identical 20-SOIC package with matching pin configuration and spacing. PCB layouts and assembly processes require no modification.