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-SSOP
1. 74FCT162H245ATPVC Substitution Conclusion
From the perspective of core logic functionality, voltage, and drive capability parameters, this part number can serve as a functional replacement for the original. The key differences are as follows: First, the package physical dimensions are incompatible. The original part is in a 48-TFSOP package (6.10mm width), whereas this part is in a 48-BSSOP package (7.50mm width). This prevents direct installation on the original PCB pads, necessitating a board design modification. Second, the "H" in the part number typically indicates a high-speed version, suggesting its AC parameters, such as propagation delay, may be superior to the original. This generally constitutes a beneficial performance improvement for most systems. However, if the system has extremely stringent timing margin requirements, a thorough re-validation of timing margins is necessary. While the electrical functionality is fully compatible for direct substitution, a PCB redesign is mandatory to accommodate the wider package.
2. 74FCT162H245CTPVC Substitution Conclusion
This part number is nearly identical to the `74FCT162H245ATPVC` in terms of function and parameters, but its substitution feasibility requires more careful evaluation. Beyond the two shared differences mentioned above—incompatible package dimensions and potentially superior AC performance (denoted by the "H")—the most critical distinction lies in the leading "C" in the prefix. Under TI's naming convention, a leading "C" typically denotes a Commercial temperature range (0°C to +70°C). In contrast, the original part (from Renesas) and TI parts without the "C" prefix (e.g., ATPVC) are typically specified for the Industrial temperature range (-40°C to +85°C). The operating temperature range of this part may therefore be narrower than the original's. If the application environment temperature could potentially fall below 0°C or exceed 70°C, this part is not suitable and poses a reliability risk. Provided the application environment is confirmed to remain strictly within the Commercial temperature range, its electrical functionality is compatible. However, similar to the first case, PCB design modifications are required to adapt to the different package.
Analysis ID: C5E2-20D2000
Based on part parameters and for reference only. Not to be used for procurement or production.
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