74ABT16500CSSC Universal Bus Transceiver 18-Bit Equivalent & Substitute Parts

Part Overview

The 74ABT16500CSSC is a universal bus transceiver IC manufactured by onsemi, designed for 18-bit bidirectional data transfer applications. This component operates within the 4.5V to 5.5V supply voltage range and supports surface mount integration in a 56-BSSOP package. The part is currently classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

74ABT16500CSSC

onsemiIn Stock: 338374ABT16500CSSC Datasheet

Current PartRFQ

SN74ABT162500DL

Texas InstrumentsIn Stock: 854SN74ABT162500DL Datasheet

SimilarRFQ

SN74ABT16500BDGGR

Texas InstrumentsIn Stock: 3860SN74ABT16500BDGGR Datasheet

SimilarRFQ

SN74ABT16500BDL

Texas InstrumentsIn Stock: 2205SN74ABT16500BDL Datasheet

SimilarRFQ

SN74ABT16500BDLR

Texas InstrumentsIn Stock: 3792SN74ABT16500BDLR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74ABT16500CSSC are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Logic type: Universal Bus Transceiver
• Number of circuits: 18-Bit configuration
• Voltage supply range: 4.5V ~ 5.5V
• Operating temperature range: -40°C ~ 85°C
• Mounting type: Surface Mount
• Moisture sensitivity level: 1 (Unlimited)

Package Compatibility Considerations: Substitutes are grouped into two package categories: 56-BSSOP (0.295", 7.50mm Width) and 56-TFSOP (0.240", 6.10mm Width). Both packages are surface mount configurations with identical pin counts and electrical functionality. The primary difference is physical footprint width, which affects PCB layout compatibility.

Output Current Specifications: The main part specifies 3mA output high and 64mA output low. Substitute parts from Texas Instruments specify 32mA output high and 64mA output low, representing enhanced output drive capability while maintaining the same low-side current specification.

Parameter Comparison

Engineering Selection Recommendations

All Texas Instruments substitute parts (SN74ABT162500DL, SN74ABT16500BDGGR, SN74ABT16500BDL, SN74ABT16500BDLR) are classified as active products with ROHS3 compliance, providing long-term availability and regulatory alignment compared to the obsolete onsemi part.

Package Selection:

• For direct footprint compatibility with existing 56-BSSOP designs: SN74ABT16500BDL or SN74ABT16500BDLR
• For compact layout requirements with 56-TFSOP package: SN74ABT16500BDGGR

Packaging Format Selection:

• Tube packaging: SN74ABT162500DL or SN74ABT16500BDL
• Tape & Reel (TR) packaging: SN74ABT16500BDGGR or SN74ABT16500BDLR

All substitutes maintain identical electrical specifications for supply voltage, operating temperature range, and logic functionality. The enhanced output high current (32mA vs. 3mA) in Texas Instruments parts provides improved drive capability without compromising compatibility.

Frequently Asked Questions (FAQ)

Q: Can SN74ABT16500BDGGR replace 74ABT16500CSSC directly on the PCB? A: SN74ABT16500BDGGR uses a 56-TFSOP package (0.240" width) versus the original 56-BSSOP package (0.295" width). While pin count and electrical function are identical, the physical footprint differs. PCB layout modification is required for this substitution.

Q: What is the difference between SN74ABT162500DL and SN74ABT16500BDL? A: Both parts are functionally equivalent 18-bit universal bus transceivers with identical electrical specifications. The primary difference is the base product number designation (74ABT162500 vs. 74ABT16500). Both are available in 56-BSSOP packages and are suitable substitutes for the obsolete onsemi part.

Q: Are all substitute parts RoHS compliant? A: Yes. All Texas Instruments substitute parts (SN74ABT162500DL, SN74ABT16500BDGGR, SN74ABT16500BDL, SN74ABT16500BDLR) are ROHS3 compliant, whereas the original onsemi part does not specify RoHS status.

Q: Does the increased output high current (32mA vs. 3mA) affect circuit design? A: The enhanced output drive capability in Texas Instruments substitutes is backward compatible. Circuits designed for the original 3mA specification will operate correctly with the higher 32mA output. This improvement reduces propagation delays and improves signal integrity.

Q: Which substitute part offers the best long-term availability? A: All Texas Instruments substitutes are classified as active products, ensuring ongoing availability. SN74ABT16500BDL and SN74ABT16500BDLR in 56-BSSOP packages provide direct footprint compatibility with the original design, minimizing redesign effort.

Q: Are moisture sensitivity levels identical across all parts? A: Yes. The original part and all substitutes share MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage or handling.