These octal bus transceivers are designed for asynchronous communication between data buses. The devices transmit 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.
When VCC is between 0 and 2.1 V, the device is in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 2.1 V, 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.
This device is fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
The SN54ABTH245 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ABTH245 is characterized for operation from -40°C to 85°C.
EPIC-IIB is a trademark of Texas Instruments Incorporated.
| Status | ACTIVE |
| SubFamily | Standard transceiver |
| Technology Family | ABT |
| VCC | 5.5 |
| Bits | 8 |
| Voltage | 5 |
| F @ nom voltage | 150 |
| tpd @ Nom Voltage | 3.9 |
| IOL | 64 |
| Rating | Military |
| Operating temperature range | -55 to 125 |
| Package Group | CFP|20 |
| Package size: mm2:W x L (PKG) | See datasheet (CFP) |
| Approx. price | |
| Schmitt Trigger | No |