Packaging information
| Package | Pins VQFN (RHL) | 24 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 1,000 | LARGE T&R |
Features for the SN74AVC8T245-Q1
- Qualified for automotive applications
- AEC Q100 test guidance with the following
results:
- Device temperature grade 1: –40°C to +125°C ambient operating temperature range
- Device HBM ESD Classification Level H2
- Device CDM ESD Classification Level C3B
- Control inputs V IH and V IL levels are referenced to V CCA voltage
- V CC isolation feature – if either V CC input is at GND, all I/O ports are in the high-impedance state
- I off supports partial power-down-mode operation
- Fully configurable dual-rail design allows each port to operate over the full 1.4-V to 3.6-V power-supply range
- I/Os are 4.6-V tolerant
- Maximum data rates:
- 170Mbps (V CCA < 1.8 V or V CCB < 1.8 V)
- 320Mbps (V CCA ≥ 1.8 V and V CCB ≥ 1.8 V)
- Latch-up performance exceeds 100 mA per JESD 78, Class II
Description for the SN74AVC8T245-Q1
The SN74AVC8T245-Q1 is an 8-bit noninverting bus transceiver that uses two separate configurable power-supply rails. The SN74AVC8T245-Q1 operation is optimal with V CCA and V CCB set at 1.4 V to 3.6 V. It is operational with V CCA and V CCB as low as 1.2 V. The A port is designed to track V CCA. V CCA accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track V CCB. V CCB accepts any supply voltage from 1.2 V to 3.6 V. This allows for universal low-voltage bidirectional translation between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes.
The SN74AVC8T245-Q1 design enables 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. One can use the output-enable ( OE) input to disable the outputs so the buses are effectively isolated.
In the SN74AVC8T245-Q1 design, V CCA supplies the control pins (DIR and OE).
This device specification covers partial-power-down applications using I off. The I off circuitry disables the outputs when the device is powered down. This inhibits current backflow into the device which prevents damage to the device.
The V CC isolation feature allows both ports to be in the high-impedance state if either V CC input is at GND.
To put the device in the high-impedance state during power up or power down, tie OE to V CC through a pullup resistor; the current-sinking capability of the driver determines the minimum value of the resistor.