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. 74FCT162245ATPACT Substitution Conclusion
From a technical parameter comparison, the 74FCT162245ATPACT can replace the original part 74FCT16245ETPVG, but careful evaluation of the specific application is required due to two key differences. First, the output drive current differs: the original part provides 32mA at high level and 64mA at low level, whereas the TI device offers a symmetrical 24mA/24mA. In circuits driving high capacitive loads or requiring high fan‑out, the TI part’s lower drive strength may affect signal integrity and switching speed, especially in high‑speed or heavily loaded applications, necessitating re‑verification of timing and noise margin. Second, the packages differ: the original uses a 48‑BSSOP (width 7.50mm), while the TI part uses a 48‑TFSOP (width 6.10mm, commonly referred to as TSSOP), which is narrower. This physical incompatibility requires redesign of the PCB layout and pad pattern, potentially increasing manufacturing cost and design complexity. However, both devices are identical in logic function, voltage range (4.5V–5.5V), and basic characteristics. If the application does not demand high drive current and the PCB can accommodate the smaller package, substitution is feasible; otherwise, prototype testing is recommended.
2. 74FCT162245ATPVCT Substitution Conclusion
The 74FCT162245ATPVCT can generally serve as a direct replacement for the original 74FCT16245ETPVG, as the differences are minimal and the package is compatible. The only notable variation is the output drive current: the original part provides 32mA high / 64mA low, while the TI device offers a symmetrical 24mA/24mA. The lower drive capability of the TI part may lead to signal attenuation or increased delay in applications requiring high current drive, such as long traces or heavy loads, potentially affecting system performance. However, both devices use the same 48‑BSSOP package (width 7.50mm), with identical physical dimensions and pinout, so no PCB modifications are needed. All other parameters—logic type, voltage range, and functionality—are the same. If the application does not impose stringent drive‑current requirements (e.g., light loads or low‑speed circuits), this device can be considered a drop‑in replacement, though electrical performance verification in the actual circuit is advised to ensure reliability.
Analysis ID: 6085-6378000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com