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. 74FCT16245TPVCG4 Substitution Conclusion
The 74FCT16245TPVCG4 matches the original part 74FCT163245CPVG in logic function, package footprint (48-BSSOP), and output type (3-State). However, key differences exist in supply voltage and output current capability. The original device operates from 2.7V to 3.6V (typically 3.3V), whereas the TI component requires a supply of 4.5V to 5.5V (typically 5V). Direct substitution into an original 3.3V design is not viable, as the TI device would likely malfunction or be damaged due to logic‑level mismatch. Additionally, the TI part offers higher output current (32 mA source, 64 mA sink versus the original’s 8 mA source and 24 mA sink), providing stronger drive capability. This advantage, however, cannot be utilized under voltage‑incompatible conditions and may instead introduce over‑voltage risks that compromise system stability. Therefore, direct replacement is not feasible unless the system voltage is adjusted to 5V and level compatibility is re‑evaluated.
2. 74FCT162H245ATPVC Substitution Conclusion
The 74FCT162H245ATPVC shares the same basic function, package (48‑BSSOP), and output structure as the original 74FCT163245CPVG. The critical differences lie in supply voltage and output current characteristics. The original part operates from 2.7V to 3.6V, while the TI device requires 4.5V to 5.5V. This voltage mismatch directly leads to level incompatibility; substituting the TI part into a 3.3V system could result in functional failure or device damage. In terms of output current, the TI component provides balanced drive of 24 mA for both high and low levels (compared to 8 mA high and 24 mA low for the original), offering more consistent signal drive capability when voltage is matched. Nevertheless, the voltage discrepancy remains a fundamental barrier. Consequently, direct substitution is not workable. System voltage adaptation or the use of level‑shifting circuitry must be considered.
Analysis ID: 269D-133E000
Based on part parameters and for reference only. Not to be used for procurement or production.
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