Original Part
Transceiver, Non-Inverting 2 Element 8 Bit per Element 3-State Output 48-SSOP
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-SSOP
1. CY74FCT162245ATPVC Substitution Conclusion
From the perspectives of core functionality, logic, power supply, and package, the CY74FCT162245ATPVC can serve as a replacement for the original part. The key difference lies in the output drive capability: the original part provides asymmetric drive (32mA source, 64mA sink), whereas the TI part offers symmetric drive (24mA for both). Upon substitution, the device's high-level sourcing and low-level sinking capabilities are both reduced, with the low-level drive capability particularly weakened by approximately 62%. The feasibility of this substitution depends entirely on the actual circuit load. If the original design operates with loads below 24mA, or if the PCB trace loading is light, the substitution can be made safely. However, if the original design relies on the stronger drive capability of the original part (especially its 64mA low-level strength) to drive heavy loads or long traces, a direct replacement may lead to degraded signal integrity (e.g., increased rise/fall times, reduced noise margin) or, in extreme cases, an inability to drive the load correctly.
2. CY74FCT162245TPVC Substitution Conclusion
The CY74FCT162245TPVC is identical to the aforementioned ATPVC part in all provided specifications. Consequently, its substitution conclusion is the same: it is functionally and mechanically compatible, but is similarly limited by its output drive current (symmetric 24mA) being lower than that of the original part (asymmetric 32mA/64mA). The absence of the "A" in the part number typically indicates it is the standard version, while the "A" version may have subtle optimizations in unspecified characteristics (such as switching speed, power consumption, or ESD rating). However, concerning the given critical parameters, both parts present the same core issue for replacing the original part—namely, whether the drive capability meets the original design requirements. Provided the drive capability is assessed as sufficient, both can be considered viable replacement options.
Analysis ID: DC9B-9CF5000
Based on part parameters and for reference only. Not to be used for procurement or production.
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