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-SSOP
Transceiver, Non-Inverting 2 Element 8 Bit per Element 3-State Output 48-SSOP
1. Substitution Conclusion for 74ABT16245BDL,112
This part can serve as a direct drop-in replacement with high compatibility, though design verification is still recommended. The substitute is fully consistent with the original part in core functionality, supply voltage, and package. The primary difference lies in the specified output drive capability: the original Texas Instruments datasheet lists two sets of drive currents (`12mA, 12mA; 32mA, 64mA`), typically indicating performance under different voltage conditions. In contrast, the Nexperia `74ABT16245BDL,112` specifies `32mA, 64mA`. Its guaranteed drive capability matches or exceeds the original part's "strong drive" specification under standard conditions, with an even stronger low-level drive (64mA). Consequently, it offers equivalent or superior load-driving capability in practical bus applications, ensuring good electrical compatibility.
2. Substitution Conclusion for 74ABTH162245ADL,11
This substitution requires careful evaluation and is conditionally acceptable; it is not recommended for high-performance or heavily loaded bus applications. While the basic logic function and package are identical, a key discrepancy exists in the output drive capability, specified as `32mA, 12mA`. This indicates a strong high-level drive (32mA) but a significantly weaker low-level drive (12mA) compared to the original part's 64mA. When driving loads that primarily sink current at a low logic level (e.g., multiple TTL inputs), this part may exhibit reduced fan-out, slower switching speed, and diminished noise margin. In high-speed or high-load bus applications, these characteristics could pose signal integrity risks. Therefore, its use should be limited to light-load scenarios or applications where low-level drive current is not critical.
Analysis ID: BD3B-2BBA000
Based on part parameters and for reference only. Not to be used for procurement or production.
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