The 'AC245 octal bus transceivers are designed for asynchronous two-way communication between data buses. It operates in the voltage range of 2V to 6V and accepts input voltages up to 6V. The control-function implementation minimizes external timing requirements. When the output-enable (OE) is low, the device passes noninverted 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. A high on OE disables the device so that the buses are effectively isolated. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
The AC245 octal bus transceiver is designed for asynchronous two‑way communication between data buses. The device passes non‑inverted data from one bus to the other when the output‑enable (OE) pin is low, and isolates the buses when OE is high. Direction control (DIR) determines the data flow direction, and unused inputs must be held at VCC or GND for proper operation.
The data sheet provides absolute maximum ratings, recommended operating conditions, electrical characteristics, switching timing, and packaging information for multiple package types (PDIP, SOIC, SSOP, TSSOP, etc.). It also includes mechanical drawings, thermal impedance values, and an important notice regarding product availability and warranty.
| Supply voltage range (VCC) | -0.5 V to 7 V |
|---|---|
| Input voltage range (VI) | -0.5 V to VCC+0.5 V |
| Output voltage range (VO) | -0.5 V to VCC+0.5 V |
| Input clamp current (IIK) | ±20 mA |
| Output clamp current (IOK) | ±20 mA |
| Continuous output current (IO) | ±50 mA |
| Storage temperature range | -65°C to 150°C |
The recommended supply voltage (VCC) is from –0.5 V to 7 V.
The input clamp current may be up to ±20 mA.
The device can be stored between –65 °C and 150 °C.