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-SSOP
1. 74FCT162245ATPACT Substitution Conclusion
Functionally compatible, but two critical differences must be noted. First, its output drive current (24 mA) is lower than that of the original part (64 mA low-level). When driving heavy capacitive or low-impedance loads, this may result in insufficient drive capability or slower switching speeds, necessitating a reevaluation of the load conditions. Second, while its pinout is compatible with the original device, its package (48-TFSOP, 6.10 mm wide) is narrower than the original (48-BSSOP, 7.50 mm wide). Therefore, a direct drop-in replacement on the existing footprint is not possible, and the PCB layout must be redesigned accordingly.
2. 74FCT162245ATPVCT Substitution Conclusion
This device is a preferred direct replacement option due to its close alignment in key specifications and physical packaging. It shares the same supply voltage, logic functionality, and pin-compatible package (48-BSSOP, 7.50 mm wide) as the original part, allowing for a true drop-in replacement. The only technical variance lies in its symmetrical output drive current (24 mA), which is lower than the original (particularly the 64 mA low-level drive). For applications requiring high current sinking, such as driving backplanes or multiple loads, its drive capability should be verified against system margin requirements. In most standard load scenarios, however, it can be substituted directly.
Analysis ID: 88FA-4050000
Based on part parameters and for reference only. Not to be used for procurement or production.
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