The SN74AHC245Q octal bus transceiver is designed for asynchronous two-way communication between data buses. The control-function implementation minimizes external timing requirements.
This device allows data transmission 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 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.
| Supply voltage (min) (V) | 2 |
| Supply voltage (max) (V) | 5.5 |
| Number of channels | 8 |
| IOL (max) (mA) | 8 |
| IOH (max) (mA) | -8 |
| Input type | LVTTL/CMOS |
| Output type | CMOS |
| Features | Balanced outputs, Over-voltage tolerant inputs, Very high speed (tpd 5-10ns) |
| Technology family | AHC |
| Rating | Automotive |
| Operating temperature range (°C) | -40 to 125 |
| SOIC (DW) | 20 | 131.84 mm² 12.8 x 10.3 |
| TSSOP (PW) | 20 | 41.6 mm² 6.5 x 6.4 |