Original Part
Transceiver, Non-Inverting 2 Element 8 Bit per Element 3-State Output 48-TSSOP
Alternative Part
Transceiver, Non-Inverting 2 Element 8 Bit per Element 3-State Output 48-SSOP
Transceiver, Non-Inverting 2 Element 8 Bit per Element 3-State Output 48-TSSOP
1. Substitution Conclusion for SN74ABT16245ADLR
This part is functionally viable as a substitute but presents significant physical compatibility risks. Its core logic function, supply voltage, and high-level output drive current (32mA) are fully compatible with the original part. Its superior low-level drive capability (64mA vs. 12mA) offers better performance and reduced voltage drop when driving heavy loads, such as multiple bus lines. The critical discrepancy lies in its package: it uses a wider 48-SSOP (7.50mm body width), while the original part is in a 48-TSSOP (6.10mm body width). The difference in package dimensions and potential pin pitch mismatch will almost certainly prevent it from fitting the existing PCB footprint. A board re-spin would be required for implementation.
2. Substitution Conclusion for SN74ABT162245DGGR
This part is physically compatible as a drop-in replacement, but there is uncertainty regarding its key electrical parameters, requiring verification via the datasheet before a final determination can be made. It uses the identical 48-TSSOP package as the original, ensuring direct board-level compatibility. However, its listed specifications include two distinct sets of output drive currents (12mA/12mA and 32mA/64mA), indicating it covers different variants or performance grades within the family. One set (12mA low-level drive) matches the original part, while the other (64mA) is stronger. The exact drive capability of the specific device must be precisely confirmed from its official datasheet. This verification is a mandatory step prior to substitution to ensure that timing and noise margin requirements in the target application are met.
Analysis ID: E03A-8C7E000
Based on part parameters and for reference only. Not to be used for procurement or production.
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