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. 74FCT162245CTPACT Substitution Conclusion
From an electrical functionality and basic parameter perspective, the 74FCT162245CTPACT is fully compatible with the original part 74FCT16245ETPVG in terms of logic type (non-inverting transceiver), element count (2 elements, 8-bit per element), voltage range (4.5V to 5.5V), and output type (tri-state), making it a suitable replacement. The differences lie in output drive current and package dimensions: this device offers a symmetrical 24mA high / 24mA low drive, whereas the original part features an asymmetrical 32mA high / 64mA low drive. Consequently, the replacement part has weaker drive capability, with its low-level sink current reduced by nearly 60%, which may impact performance in high-load or high-speed signaling applications. Additionally, the package has changed from a 48-BSSOP (7.50mm wide) to a 48-TFSOP (6.10mm wide). The narrower footprint may cause PCB layout incompatibility, requiring pad redesign or spacing adjustments. Substitution is viable if the target application does not demand high drive current (e.g., light-load digital interfaces) and the PCB can accommodate the smaller package; otherwise, signal degradation or mounting issues may arise.
2. 74FCT162H245ATPACT Substitution Conclusion
The 74FCT162H245ATPACT is nearly identical to the 74FCT162245CTPACT in the given parameters, including output current (24mA high / 24mA low), voltage range, and package (48-TFSOP). Therefore, its feasibility as a replacement for the original part yields a similar conclusion: it can directly substitute in core logic function and power supply compatibility. The differences likewise center on output current (reduced drive capability compared to the original) and package size (narrower), which may lead to insufficient performance in applications with heavy loads or high sink current requirements, and the package change necessitates PCB compatibility evaluation. Furthermore, the "H" suffix in the part number may indicate high-speed optimized characteristics, such as faster propagation delay, though these parameters are not explicitly listed. It is advisable to consult the detailed datasheet before actual substitution to confirm any unlisted differences (e.g., power consumption, speed grade) and ensure a comprehensive match with the original design requirements.
Analysis ID: 53EB-E4BD000
Based on part parameters and for reference only. Not to be used for procurement or production.
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