Original Part
Transceiver, Non-Inverting 2 Element 8 Bit per Element 3-State Output 48-TSSOP
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-SSOP
1. 74FCT162245CTPACT Substitution Conclusion
This part demonstrates a relatively high feasibility as a direct substitute, though its drive capability requires verification. The primary difference lies in its output drive current, which has changed from the original 32mA (high)/64mA (low) to a symmetrical 24mA/24mA. Consequently, its ability to drive heavy loads, particularly on the low-side, is diminished. If the original circuit design operates with loads close to or exceeding the new device's drive limits, it may lead to degraded signal integrity or device overheating. Therefore, it is essential to confirm that the actual load current falls within its rated specifications before substitution. In all other aspects—logic function (non-inverting transceiver, tri-state outputs), supply voltage (4.5-5.5V), and package (48-TFSOP, pin-compatible)—it is fully consistent with the original part.
2. 74FCT162245CTPVCG4 Substitution Conclusion
This part has low feasibility as a direct substitute and is not recommended for drop-in replacement in existing designs. Beyond sharing the same drive current limitation (24mA/24mA) as the CTPACT variant, the most critical distinction is the package change from a 48-TFSOP (6.10mm wide) to a 48-BSSOP (7.50mm wide). The difference in pin pitch and overall package footprint means it cannot be directly soldered onto existing PCB pads, necessitating a board layout redesign. Although its electrical logic function is identical, the physical package incompatibility precludes its use as a "plug-and-play" alternative to the original component.
Analysis ID: BD22-261D000
Based on part parameters and for reference only. Not to be used for procurement or production.
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