Overview: SN74LVC2T45 Dual-Bit Voltage-Level Translator
The SN74LVC2T45 from Texas Instruments is a dual-bit dual-supply voltage-level translator designed to support bidirectional data transfers between mixed-voltage systems. With a dedicated direction pin (DIR), this device provides reliable signal flow between different logic domains.
Its capability to operate over a wide range of supply voltages (1.65V?C5.5V) makes it suitable for a variety of applications where microcontrollers or other components operate at incompatible logic levels. Featuring low power consumption and compact packaging, this device meets the needs of today??s high-performance and space-constrained embedded systems.
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Technical Specifications Table
| Parameter | Min | Max | Unit |
|---|---|---|---|
| VCCA Supply Voltage | 1.65 | 5.5 | V |
| VCCB Supply Voltage | 1.65 | 5.5 | V |
| Input Voltage | 0 | 5.5 | V |
| Direction Control | Yes (DIR pin) | ?C | |
| Max Data Rate | 420 Mbps | ?C | |
| Package Type | DCT (SSOP-8) | ?C | |
| Operating Temperature | -40 | 125 | ??C |
Why SN74LVC2T45 Stands Out Among Voltage-Level Translators
Traditional level translators can be limited by unidirectional flow or narrow voltage compatibility. The SN74LVC2T45 offers **bidirectional signal control**, wide supply support, and a compact footprint. This makes it a preferred choice for engineers designing across multiple voltage domains. Through its high-speed performance and low static power consumption, it provides a significant advantage in energy-sensitive applications such as portable consumer devices and embedded modules.
Backed by the quality assurance of Texas Instruments and available from IC Manufacturer, this component ensures stability and **signal integrity** across all supported voltages.
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Extended Electrical Characteristics
| Feature | Specification |
|---|---|
| Logic Function | Dual-Bit Bus Transceiver with Direction Control |
| Bidirectional Translation | Supported via DIR pin |
| Propagation Delay (3.3V) | 1.5 ns |
| Static Drive Capability | ??24 mA |
| Quiescent Current | Low Static Power |
| Temperature Range | ?C40??C to 125??C |
Typical Applications
- Voltage-level interfacing in IoT sensor networks
- Signal translation in industrial controllers
- Microcontroller-to-memory bus adaptation
Frequently Asked Questions (FAQ)
What is the role of the DIR pin in SN74LVC2T45?
The DIR pin sets the direction of signal transfer between two logic domains. High means data moves from A to B; low means B to A. This allows **precise bidirectional control**.
Can this part handle voltage translation from 5V to 1.8V?
Yes, with independent VCCA and VCCB inputs, SN74LVC2T45 supports translation between 1.65V and 5.5V, including 5V to 1.8V conversions.
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Is this device recommended for portable applications?
Absolutely. Its low static current and small DCT package make it ideal for **battery-operated systems** and mobile embedded devices where energy efficiency matters.
What??s the switching speed of this logic translator?
The SN74LVC2T45 supports data rates up to 420 Mbps, ensuring **fast signal transitions** and maintaining timing integrity in high-speed interfaces.
How does this compare with passive level shifters?
Unlike passive alternatives, this active device enables direction control, broader voltage compatibility, and superior speed ?? enhancing performance across various applications.
