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-SSOP
Transceiver, Non-Inverting 2 Element 8 Bit per Element 3-State Output 48-TSSOP
1. 74FCT162H245ATPVC Substitution Conclusion
Direct substitution carries risks, with the primary obstacle being physical package incompatibility. The 74FCT162H245ATPVC matches the Original Part in logic function and supply voltage. However, key differences exist. First, the package differs: it uses a wider 48-BSSOP, whereas the Original Part is a 48-TFSOP. This prevents installation onto PCB pads designed for the Original Part. Second, the drive capability differs: it provides symmetrical 24mA/24mA output current, compared to the Original Part's asymmetrical 32mA/64mA. Its low-level output drive capability is significantly reduced (64mA to 24mA). When driving heavy loads, this may lead to signal integrity issues such as slower rise times and increased voltage drops. Substitution can only be considered if board space allows for package modification and the load current requirement is within the 24mA range; otherwise, it is not recommended.
2. 74FCT162H245CTPACT Substitution Conclusion
This device can serve as a functionally equivalent drop-in replacement in most applications, provided the load current requirement is verified. It is fully compatible with the Original Part in terms of logic function, supply voltage, and physical package (48-TFSOP), allowing direct soldering onto the same PCB pads. The main technical difference lies in the drive current: its symmetrical 24mA/24mA drive capability is weaker than the Original Part's asymmetrical 32mA/64mA, particularly with the low-level drive current dropping from 64mA to 24mA. If the original design operates near its drive capability limits—for example, when driving large capacitive loads or multiple parallel loads—substitution may risk degraded signal edges or elevated low-level voltages. It is an ideal replacement where the load current demand is confirmed to be less than 24mA. Otherwise, practical testing prior to substitution is advised.
Analysis ID: C38E-21F5000
Based on part parameters and for reference only. Not to be used for procurement or production.
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