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. CY74FCT16245TPVCT Substitution Conclusion
The CY74FCT16245TPVCT can serve as a replacement for the original part 74FCT162245ATPVG, with attention required to the difference in output current capability. The key distinction lies in the output drive strength: the TI device specifies a high-level output current of 32 mA and a low-level output current of 64 mA, whereas the original part offers symmetrical 24 mA sourcing and sinking. The CY74FCT16245TPVCT provides higher drive capability, which can support heavier loads or improve signal integrity in high-load applications; this may, however, lead to a slight increase in system power dissipation, requiring evaluation of power supply and thermal design compatibility. Given that logic function, supply voltage range (4.5 V to 5.5 V), and package (48‑BSSOP, 7.50 mm width) are identical, the device is a direct electrical and physical drop-in replacement. Nevertheless, it is recommended to verify the original system’s sensitivity to the increased drive current to ensure reliable operation.
2. 74FCT162245ATPACT Substitution Conclusion
The 74FCT162245ATPACT is not a direct replacement for the original 74FCT162245ATPVG, primarily due to package incompatibility. The technical difference lies in the package outline: the TI device uses a 48‑TFSOP (6.10 mm width), while the original part is housed in a 48‑BSSOP (7.50 mm width). The thinner TFSOP package may result in PCB pad mismatch, preventing direct soldering or mechanical mounting. Although electrical characteristics—including output current (24 mA high and low), supply voltage (4.5 V to 5.5 V), and logic function—are fully consistent, the package discrepancy is the critical barrier to substitution. Unless the PCB layout allows for package adaptation or an interposer is used, a direct replacement is not recommended without modifying the board design.
Analysis ID: 3B59-EA09000
Based on part parameters and for reference only. Not to be used for procurement or production.
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