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. 74FCT162245ATPAG Substitution Conclusion
Functionally, this device can serve as a direct replacement. However, two critical differences exist: reduced drive strength and a mismatched package footprint. The Renesas part's output drive current (24mA) is lower than that of the original TI device (32mA High / 64mA Low). This results in weaker capability when driving heavy capacitive or high-current loads, potentially impacting signal integrity or fan-out. Furthermore, its 48-TSSOP package (6.10mm wide) is narrower than the original 48-BSSOP package (7.50mm wide). Direct substitution therefore requires a redesign of the PCB pad layout. While functionally compatible, the actual load current must be evaluated to ensure it falls within the 24mA drive capability. Additionally, PCB modifications are mandatory to accommodate the new package; otherwise, a direct drop-in replacement is not feasible.
2. 74FCT162245ATPVG Substitution Conclusion
This device is a functionally direct replacement. The primary difference lies in its reduced drive strength. Its output drive current (24mA) is also lower than the original TI specification (32mA High / 64mA Low), providing less margin when driving heavy loads. In high-speed or high-load scenarios, this may manifest as increased rise/fall times or reduced noise margin. The package is identical to the original (both are 48-BSSOP), enabling a physical drop-in replacement. For applications where the system load current does not exceed 24mA, this part is an almost perfect direct substitute. If the original design leveraged the TI part's higher drive capability, signal quality and timing must be re-verified.
Analysis ID: 7776-8464000
Based on part parameters and for reference only. Not to be used for procurement or production.
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