The SN74LVC245A is an octal bus transceiver designed for 1.65-V to 3.6-V VCC operation. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so the buses effectively are isolated.
The SN74LVC245A octal bus transceiver provides bidirectional data transfer between two 8‑bit buses with a direction‑control pin and an output‑enable pin for high‑impedance isolation. It operates from 1.65 V to 3.6 V, accepts input voltages up to 5.5 V, and features partial‑power‑down mode, ESD protection, and mixed‑mode signal capability.
The device is offered in multiple packages (PDIP, SOIC, TSSOP, QFN, etc.) with detailed electrical characteristics, absolute maximum ratings, and recommended operating conditions. Ordering information, mechanical drawings, and a comprehensive notice on warranty and safety‑critical use are included in the document.
| Maximum propagation delay (tpg) at 3.3 V | 6.3 ns |
|---|---|
| PDIP package pin count | 20 pins |
The typical maximum propagation delay is 6.3 ns at 3.3 V.
The PDIP package has 20 pins.