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. 74FCT162245ATPAG Substitution Conclusion
The 74FCT162245ATPAG is functionally compatible with the original CY74FCT16245TPVCT in terms of logic function, supply voltage range (4.5V–5.5V), and output type (3‑State). It can therefore serve as a drop‑in replacement for basic operation. Key differences lie in output drive capability and package dimensions: the original device offers asymmetric drive with 32 mA source and 64 mA sink current, whereas the substitute provides symmetric 24 mA source/sink. The lower drive of the substitute may not be adequate for high‑current loads, such as driving heavily loaded buses or long transmission lines. Additionally, the package changes from a 48‑pin BSSOP (7.50 mm width) to a 48‑pin TFSOP (6.10 mm width). While pin‑out is likely compatible, the PCB layout must be adjusted to accommodate the narrower footprint. Substitution is acceptable if the application does not exceed 24 mA drive and the PCB can be modified for the smaller package; otherwise, load conditions should be carefully reviewed.
2. 74FCT162245CTPAG8 Substitution Conclusion
The 74FCT162245CTPAG8 matches the original CY74FCT16245TPVCT in core parameters—logic type, voltage range, and output structure—enabling basic functional substitution. Differences again center on output current and package: the substitute provides symmetric 24 mA source/sink drive, compared to the original’s 32 mA source and 64 mA sink. This reduction in drive may lead to insufficient performance in applications requiring strong or asymmetric drive. The package shifts from a 48‑pin BSSOP (7.50 mm width) to a 48‑pin TFSOP (6.10 mm width), necessitating verification of pin compatibility and PCB redesign. Although the suffix “CTPAG8” may indicate unspecified characteristics such as speed or temperature grade, based on available parameters, substitution is feasible if the application current demand is ≤ 24 mA and the package change is acceptable. Otherwise, validation under actual operating conditions is recommended.
Analysis ID: B746-5E5D000
Based on part parameters and for reference only. Not to be used for procurement or production.
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