74LVC623ADB,112 Equivalent & Substitute Parts

Part Overview

The 74LVC623ADB,112 is a non-inverting transceiver IC manufactured by NXP USA Inc., designed for 8-bit data transmission with 3-state output capability. This component operates across a supply voltage range of 1.2V to 3.6V and is housed in a 20-SSOP surface mount package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations where legacy compatibility is required.

Substiute Parts

74LVC623ADB,112

NXP USA Inc.In Stock: 107274LVC623ADB,112 Datasheet

Current PartRFQ

SN74LVC245ADBR

Texas InstrumentsIn Stock: 25190SN74LVC245ADBR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74LVC623ADB,112 is determined by strict equivalence across the following critical parameters:

• Logic type: Non-inverting transceiver configuration
• Bit width: 8-bit per element
• Output architecture: 3-state output capability
• Output current capability: 24mA minimum for both high and low states
• Supply voltage range: Minimum 1.2V to 3.6V maximum
• Package form factor: 20-SSOP surface mount
• Operating temperature range: -40°C to 125°C

The substitute part SN74LVC245ADBR from Texas Instruments meets all functional and electrical requirements for direct replacement. Both parts belong to the 74LVC logic family and share identical pin configurations, electrical characteristics, and thermal specifications.

Parameter Comparison

Engineering Selection Recommendations

The SN74LVC245ADBR is the primary substitute for the obsolete 74LVC623ADB,112. Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The substitute part maintains active product status with Texas Instruments, ensuring long-term availability and supply chain continuity.

The minimum supply voltage specification differs between the two parts: the original NXP part operates from 1.2V, while the Texas Instruments substitute operates from 1.65V minimum. Applications requiring operation below 1.65V cannot use the substitute without circuit redesign. For all other applications within the 1.65V to 3.6V range, the SN74LVC245ADBR provides direct functional equivalence with identical pin configuration and electrical performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can the SN74LVC245ADBR replace the 74LVC623ADB,112 in all applications?

A: The SN74LVC245ADBR is functionally equivalent for applications operating at supply voltages of 1.65V or higher. Applications requiring operation below 1.65V require alternative solutions, as the substitute part does not support this lower voltage range.

Q: Are the pin configurations identical between these parts?

A: Yes. Both parts use the 20-SSOP package with identical pin assignments, enabling direct PCB-level substitution without layout modifications.

Q: What is the significance of the product status difference?

A: The 74LVC623ADB,112 is obsolete, meaning NXP has discontinued production and support. The SN74LVC245ADBR maintains active status with Texas Instruments, providing assured availability, technical support, and compliance with current manufacturing standards.

Q: Are there compliance differences between the two parts?

A: Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity ratings. No compliance barriers exist for substitution.

Q: What is the output current capability of these transceivers?

A: Both parts deliver 24mA output current for high and low states, supporting standard TTL-compatible load requirements across the 74LVC logic family.