SN74LVC2T45DCTR
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| Part Number | SN74LVC2T45DCTR |
|---|---|
| Manufacturer |
 Texas Instruments
|
| Description | The SN74LVC2T45DCTR is a compact dual-bit dual-supply bus transceiver with configurable voltage-level translation developed by Texas Instruments, designed for bidirectional logic-level shifting between mixed-voltage systems. It supports flexible interfacing in embedded applications where different logic domains must communicate reliably. The device features a fully configurable dual-rail architecture, allowing both VCCA and VCCB to operate anywhere from 1.65V to 5.5V. This makes it suitable for voltage translation between common logic rails such as 1.8V, 2.5V, 3.3V, and 5V. The SN74LVC2T45DCTR includes direction control and 3-state outputs, enabling controlled bidirectional data flow in bus-oriented designs. It also provides VCC isolation, so if either supply rail is at ground, both ports enter a high-impedance state for safer system behavior. With low power consumption and support for high-speed data translation, the device is well suited for communication interfaces, control buses, and general-purpose digital signal translation. It also supports Ioff partial-power-down operation, helping prevent back-drive current when one side of the system is powered down. Housed in a compact 8-pin SSOP surface-mount package, the SN74LVC2T45DCTR is optimized for space-constrained PCB layouts and automated assembly. The SN74LVC2T45DCTR is widely used in applications such as microcontroller interfaces, FPGA and ASIC systems, SPI and GPIO level shifting, industrial control electronics, and mixed-voltage digital designs. |
| Product Group | Logic IC |
| MOQ | 3000 pcs |
| SPQ | 3000 pcs |
| Figure/Case | 8-MSOP |
| Package | T&R Pack |
| Ship From | Hong Kong |
| Shipment Way | DHL / Fedex / TNT / UPS / Others |
| Delivery Term | Ex-Works |
| Send RFQ | sales@signalhk.com |
This dual-bit noninverting bus transceiver uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.65V to 5.5V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65V to 5.5V. This allows for universal low-voltage bidirectional translation between any of the 1.8V, 2.5V, 3.3V, and 5V voltage nodes.
The SN74LVC2T45 is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) 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 are always active and must have a logic HIGH or LOW level applied to prevent excess ICC and ICCZ.
The SN74LVC2T45 is designed so that VCCA supplies the DIR input circuit. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.
The VCC isolation feature is designed so that if either VCC input is at GND, both ports are in the high- impedance state.
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SN74LVC2T45DCTR
SN74LVC2T45DCTR