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-TSSOP
1. 74FCT163245CPVG Substitution Conclusion
Direct substitution is not recommended. The key differences lie in the supply voltage range (2.7V to 3.6V versus 4.5V to 5.5V) and the high-level output drive capability (8mA versus 24mA). This device is designed for 3.3V low-voltage systems. If used directly in the original 5V system, it will face power incompatibility, rendering it inoperable. Furthermore, its high-level output voltage (maximum approximately 3.6V) may fail to meet the high-level logic threshold requirements of a 5V system. Its weaker drive strength may also be insufficient to reliably drive the same load.
2. 74FCT162245CTPAG Substitution Conclusion
This device is highly substitutable from an electrical parameter standpoint, but package compatibility requires attention. The difference lies in the package outline dimensions (48-TSSOP width of 6.10mm versus 48-BSSOP width of 7.50mm). The pin-to-pin functionality and core electrical characteristics (5V supply, 24mA symmetrical drive) are identical, allowing for seamless integration into the original circuit logic. However, the narrower TSSOP package is not a match for the original BSSOP footprint pattern, preventing it from being a direct drop-in replacement. PCB layout redesign or the use of an adapter footprint is necessary for substitution.
Analysis ID: B0B4-6D64000
Based on part parameters and for reference only. Not to be used for procurement or production.
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