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-TSSOP
Transceiver, Non-Inverting 2 Element 8 Bit per Element 3-State Output 48-SSOP
1. 74FCT162245ATPACT Substitution Conclusion
Substitution is possible, but requires evaluation of drive capability and confirmation of PCB footprint compatibility. The key differences are: 1) Drive Current: The original part's output current is 32mA (high) / 64mA (low), whereas this TI part is symmetrical at 24mA / 24mA. The TI part's low-level drive (sink current) capability is significantly weaker than the original. This may lead to insufficient margin or elevated output voltage when driving heavy loads (e.g., multiple bus lines or inputs), necessitating a review against the actual load current. 2) Package Outline: The original part is in a 48-BSSOP (wide body, 7.50mm) package, while this TI part is in a 48-TSSOP (narrow body, 6.10mm) package. Their pad layouts and package widths differ, making direct pin-to-pin PCB soldering impossible. The board footprint design must be modified or an adapter solution used for replacement.
2. 74FCT162245ATPVCT Substitution Conclusion
This part presents a higher feasibility for direct substitution, though verification of drive capability against requirements is still necessary. The difference lies in the drive current: Compared to the original part, this TI part also changes the output current from 32mA (high) / 64mA (low) to a symmetrical 24mA / 24mA. Its low-level drive capability is only about 37.5% of the original device, which is the most critical risk factor. If the original design fully utilized the robust low-level drive of the original part (e.g., for driving backplane buses or long transmission lines), direct substitution could degrade signal integrity (e.g., increased low-level voltage). If the original design load is light, substitution is typically not an issue. The package is identical (48-BSSOP, 7.50mm wide), enabling a physical pin-to-pin direct replacement.
Analysis ID: 7301-4C0A000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com