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-TSSOP
1. 74FCT16245CTPAG8 Substitution Conclusion
From a core electrical performance perspective, the 74FCT16245CTPAG8 is a highly viable direct replacement for the CY74FCT16245TPVC. Their key parameters are identical, including drive strength (32mA source / 64mA sink) and supply voltage range (4.5V to 5.5V). This ensures seamless interchangeability at the signal level, fan-out capability, and power consumption. The primary difference lies in the package: the original part uses a wider 48-BSSOP (7.50mm body width), while the substitute comes in a narrower 48-TSSOP/TFSOP (6.10mm body width). Consequently, the substitute is not physically footprint-compatible and requires PCB layout redesign or package adjustment. However, it provides a complete functional and performance match electrically.
2. 74FCT162245CTPAG Substitution Conclusion
The 74FCT162245CTPAG presents lower feasibility as a direct replacement and carries clear technical risks. The key discrepancy is its significantly different output drive capability: it sources and sinks 24mA, compared to the original part's 32mA source / 64mA sink current (the difference in low-level sink current is particularly substantial). The substitute's weaker current sourcing and sinking capability may lead to increased signal rise/fall times and greater voltage droop when driving identical loads. This could potentially cause signal integrity or timing issues in applications involving high capacitive loads or multi-point fanout. Additionally, a similar physical incompatibility exists, transitioning from a wide-body BSSOP to a narrow-body TSSOP. This substitute should only be considered with caution in applications with minimal drive strength requirements and where PCB layout modification is possible.
Analysis ID: 3AD7-4F67000
Based on part parameters and for reference only. Not to be used for procurement or production.
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