This 2-bit non-inverting bus transceiver uses two separate configurable power-supply rails. The A ports are designed to track VCCA and accepts any supply voltage from 1.2V to 3.6V. The B ports are designed to track VCCB and accepts any supply voltage from 1.2V to 3.6V. This allows for universal low-voltage bidirectional translation and level-shifting between any of the 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V voltage nodes.
The SN74AVC2T45 is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR pin) input activate either the B-port outputs or the A-port outputs. The device transmits data from the A bus to the B bus when the B-port outputs are activated and from the B bus to the A bus when the A-port outputs are activated. The input circuitry on both A and B ports always is active and must have a logic HIGH or LOW level applied to prevent excess leakage current on the internal CMOS structure.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | SN74AVC2T45 Dual-Bit Dual-Supply Bus Transceiver datasheet (Rev. N) | PDF | HTML | Feb 7, 2025 |
| 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 brief | Future-Proofing Your Level Shifter Design with TI's Dual Footprint Packages | PDF | HTML | Sep 5, 2023 | |
| Selection guide | Voltage Translation Buying Guide (Rev. A) | Apr 15, 2021 |
For additional terms or required resources, click any title below to view the detail page where available.
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOT-23-THN (DDF) | 8 | Ultra Librarian |
| DSBGA (YZP) | 8 | Ultra Librarian |
| SSOP (DCT) | 8 | Ultra Librarian |
| VSSOP (DCU) | 8 | Ultra Librarian |
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