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 feasible. The primary differences lie in the supply voltage (the original part is designed for 5V systems, while the substitute operates at 3.3V) and drive capability (the original provides 32mA/64mA output current, whereas the substitute offers only 8mA/24mA). If used in a 5V-level interface, the substitute may fail to meet the required high-level threshold and lacks sufficient drive strength, potentially leading to signal integrity issues or inadequate load driving. It is only suitable for applications with a 3.3V supply and lower drive requirements.
2. 74FCT162245ATPAG8 Substitution Conclusion
This part can serve as a functional replacement, but attention must be paid to package compatibility. Both devices operate at 5V and share identical logic functionality. However, the substitute provides symmetrical output current (24mA/24mA), compared to the original’s asymmetrical drive (32mA/64mA). This means the substitute delivers lower current when driving high, which may affect rise time or high-level load capability. Additionally, the package changes from a 48-BSSOP to a narrower 48-TSSOP (6.1mm width vs. 7.5mm), so PCB layout compatibility must be verified.
Analysis ID: A91B-C07F000
Based on part parameters and for reference only. Not to be used for procurement or production.
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