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. 74FCT16245TPVCG4 Substitution Conclusion
This device is functionally identical to the original part in key electrical parameters, including core logic function (non-inverting transceiver, 2x8-bit, tri-state outputs), supply voltage range (4.5V to 5.5V), and output drive current (32mA, 64mA). Therefore, a direct electrical substitution is feasible. The most significant discrepancy lies in the package footprint. The original part uses a 48-TSSOP (TFSOP) package with a width of 6.10mm, whereas this TI device is housed in a 48-SSOP (BSSOP) package with a width of 7.50mm. The physical outline and pin pitch likely differ, making them pin-to-pin incompatible for direct soldering. Substitution would necessitate a PCB layout redesign. Consequently, this part is only suitable for new designs and cannot be used as a drop-in replacement for existing, populated boards.
2. 74FCT162H245ATPACT Substitution Conclusion
This part achieves perfect physical compatibility with the original part, matching the core logic function, supply voltage, and package type (48-TFSOP, 6.10mm width). This forms the basis for a pin-to-pin replacement. The primary technical difference is the output drive capability. The original part features asymmetric drive currents of 32mA (High) and 64mA (Low), while this TI part provides symmetric 24mA drive. Consequently, this part exhibits reduced fan-out and weaker drive strength for heavy capacitive loads, particularly for the low-level output, compared to the original. It can serve as a direct substitute in applications with light loads or non-demanding current requirements. However, in scenarios requiring high drive current, such as driving multiple loads or long cables, its drive capability must be re-evaluated against system requirements, as there is a potential performance risk.
Analysis ID: 48C5-FEE4000
Based on part parameters and for reference only. Not to be used for procurement or production.
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