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.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | SN74AVC8T245-Q1Automotive 8-Bit Dual-Supply Bus TransceiverWith Configurable Voltage Translation and 3-State Outputs datasheet (Rev. E) | PDF | HTML | Nov 16, 2023 |
| Application note | Schematic Checklist - A Guide to Designing With Fixed or Direction Control Translators | PDF | HTML | Oct 2, 2024 | |
| Application note | Schematic Checklist - A Guide to Designing with Auto-Bidirectional Translators | PDF | HTML | Jul 12, 2024 | |
| Application note | Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) | PDF | HTML | Jul 3, 2024 | |
| Application note | Overcoming Design Challenges - Implementing High Performance Interfaces | PDF | HTML | Dec 12, 2023 | |
| Application brief | Translate Voltages for RGMII (Rev. A) | PDF | HTML | Aug 6, 2021 | |
| Selection guide | Voltage Translation Buying Guide (Rev. A) | Apr 15, 2021 | ||
| More literature | Automotive Logic Devices Brochure | Aug 27, 2014 |
For additional terms or required resources, click any title below to view the detail page where available.
The 14-24-LOGIC-EVM evaluation module (EVM) is designed to support any logic device that is in a 14-pin to 24-pin D, DW, DB, NS, PW, DYY or DGV package,
14-24-NL-LOGIC-EVM is a flexible evaluation module (EVM) designed to support any logic or translation device that has a 14-pin to 24-pin BQA, BQB, RGY, RSV, RJW or RHL package.
The generic EVM is designed to support one, two, four and eight channel LVC and AVC direction-controlled translation devices. It also supports the bus hold and automotive -Q1 devices in the same number of channels. The AVC are low voltage translation devices with lower drive strength of 12mA. LVC (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN (RHL) | 24 | Ultra Librarian |
| TSSOP (PW) | 24 | Ultra Librarian |
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