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
When substituting the original CY74FCT162245CTPVC with the 74FCT163245CPVG, the key differences lie in the supply voltage range of 2.7V–3.6V (versus 4.5V–5.5V for the original) and the output high current of 8mA (compared to the original’s symmetrical 24mA high/low drive). This device is only suitable for 3.3V low-voltage systems, and its high-level drive capability is significantly reduced, which may not meet high-load requirements. If used directly in the original 5V system, the voltage mismatch could lead to electrical overstress, functional failure, or logic errors. Therefore, substitution may be considered only if the system supply can be adjusted to 3.3V and high-level drive demands are low; otherwise, it is not feasible.
2. 74FCT162245CTPAG Substitution Conclusion
When substituting the original part with the 74FCT162245CTPAG, the difference is in the package: 48-TSSOP (6.10mm width) versus the original 48-BSSOP (7.50mm width). However, the supply voltage (4.5V–5.5V) and output current (24mA high/low) match the original specifications. Electrical characteristics are fully compatible, and performance is identical, but the smaller footprint and potentially different pin pitch will cause PCB layout incompatibility, requiring redesign or pad adaptation. If the existing board can accommodate the thinner package or allow mechanical adjustments, direct substitution is possible; otherwise, layout modifications are necessary.
Analysis ID: 0EB5-419E000
Based on part parameters and for reference only. Not to be used for procurement or production.
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