This octal bus transceiver is designed for 1.65-V to 3.6-V VCC operation.
The SN74ALVCH245 is designed for asynchronous communication between data buses. 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 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.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.
| Supply voltage (min) (V) | 1.65 |
| Supply voltage (max) (V) | 3.6 |
| Number of channels | 8 |
| IOL (max) (mA) | 24 |
| IOH (max) (mA) | -24 |
| Input type | LVTTL |
| Output type | LVTTL |
| Features | Balanced outputs, Bus-hold, Ultra high speed (tpd <5ns) |
| Technology family | ALVC |
| Rating | Catalog |
| Operating temperature range (°C) | -40 to 85 |
| SOIC (DW) | 20 | 131.84 mm² 12.8 x 10.3 |
| TSSOP (PW) | 20 | 41.6 mm² 6.5 x 6.4 |
| TVSOP (DGV) | 20 | 32 mm² 5 x 6.4 |