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-TSSOP
Transceiver, Non-Inverting 2 Element 8 Bit per Element 3-State Output 48-TSSOP
1. 74FCT162245ATPAG Substitution Conclusion
From the perspective of core functionality, supply voltage, and physical package, this part can serve as a direct drop-in replacement for the original. Both are 16-bit non-inverting 3-state transceivers, utilizing the same 48-TSSOP package and operating within an identical voltage range.
The key difference lies in the output drive strength. The original part (TI) features asymmetric drive (32mA high, 64mA low), whereas this part (Renesas) provides symmetric drive at 24mA. Consequently, this substitute has a slightly weaker capability when driving heavy loads, particularly those requiring high sink current. However, the symmetric current profile may simplify board-level power supply design.
For applications where the load current demand does not exceed 24mA, this part is a viable substitute. If the original design relies on the high sink current (64mA) capability, a re-evaluation of the load or the need for additional buffering is required.
2. 74FCT162245CTPAG8 Substitution Conclusion
The substitution conclusion for this part is identical to that for the 74FCT162245ATPAG. It is fully compatible with the original part in terms of basic function, package, and voltage specifications, and is also manufactured by Renesas.
The critical differentiating factor remains the output drive current: it changes the original part's asymmetric drive (32mA/64mA) to a symmetric 24mA drive. This change reduces the maximum available drive margin, particularly for ground sink current, when driving low-impedance loads or long traces compared to the original.
In summary, for most standard logic interfacing and signal buffering applications, this part is a feasible direct replacement. However, in scenarios where drive strength is a critical design boundary, it is essential to verify that the 24mA drive current is sufficient for all load conditions.
Analysis ID: 6AAE-2787000
Based on part parameters and for reference only. Not to be used for procurement or production.
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