Overview
The SN74LVC1T45DCKR, produced by Texas Instruments, is a single-bit, dual-supply, noninverting voltage level transceiver. This device is designed to facilitate data transmission between two different voltage domains, making it highly versatile for various electronic systems. The SN74LVC1T45DCKR supports a wide range of supply voltages from 1.65V to 5.5V for both VCCA and VCCB, allowing it to translate between different voltage nodes such as 1.8V, 2.5V, 3.3V, and 5V. This feature makes it suitable for use in mixed-voltage systems and applications requiring voltage level translation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCCA, VCCB) | 1.65 to 5.5 | V |
| Input Voltage (VI) | -0.5 to 6.5 | V |
| Output Voltage (VO) | -0.5 to VCC + 0.5 | V |
| Input Clamp Current (IIK) | -50 | mA |
| Output Clamp Current (IOK) | -50 | mA |
| Continuous Output Current (IO) | ±50 | mA |
| Continuous Current through VCC or GND | ±100 | mA |
| Junction Temperature (TJ) | -40 to 125 | °C |
| Storage Temperature (Tstg) | -65 to 150 | °C |
| Propagation Delay (tPZH, tPZL) | 18.8 to 38.2 | ns |
| Package Types | DBV (SOT-23), DCK (SC70), DPK (USON), DRL (SOT), YZP (DSBGA) |
Key Features
- Fully configurable dual-rail design allowing each port to operate over the full 1.65V to 5.5V power-supply range.
- Supports data transmission in both directions controlled by the DIR input.
- ESD protection exceeds JESD 22 standards: 2000V Human-Body Model, 200V Machine Model, and 1000V Charged-Device Model.
- Ioff circuitry disables the outputs when the device is powered down to prevent damaging current backflow.
- VCC isolation feature ensures both ports are in the high-impedance state if either VCC input is at GND.
- NanoFree™ package technology using the die as the package for compact design.
Applications
- Mixed-voltage systems requiring level translation between different voltage domains.
- Embedded systems, microcontrollers, and microprocessors interfacing with peripherals at different voltage levels.
- Automotive and industrial control systems where voltage level translation is necessary.
- Consumer electronics and mobile devices requiring efficient voltage level shifting.
Q & A
- What is the primary function of the SN74LVC1T45DCKR? The primary function is to act as a single-bit, dual-supply, noninverting voltage level transceiver, facilitating data transmission between two different voltage domains.
- What is the range of supply voltages supported by the SN74LVC1T45DCKR? The device supports supply voltages ranging from 1.65V to 5.5V for both VCCA and VCCB.
- How is the direction of data transmission controlled in the SN74LVC1T45DCKR? The direction of data transmission is controlled by the DIR input; a high level allows data transmission from A to B, and a low level allows data transmission from B to A.
- What type of ESD protection does the SN74LVC1T45DCKR offer? The device offers ESD protection exceeding JESD 22 standards: 2000V Human-Body Model, 200V Machine Model, and 1000V Charged-Device Model.
- What is the purpose of the Ioff circuitry in the SN74LVC1T45DCKR? The Ioff circuitry disables the outputs when the device is powered down to prevent damaging current backflow.
- What are the different package types available for the SN74LVC1T45DCKR? The device is available in DBV (SOT-23), DCK (SC70), DPK (USON), DRL (SOT), and YZP (DSBGA) package types.
- What is the significance of the VCC isolation feature in the SN74LVC1T45DCKR? The VCC isolation feature ensures that both ports are in the high-impedance state if either VCC input is at GND.
- What is the propagation delay of the SN74LVC1T45DCKR? The propagation delay ranges from 18.8 to 38.2 ns depending on the supply voltage and operating conditions.
- In what types of systems is the SN74LVC1T45DCKR commonly used? The device is commonly used in mixed-voltage systems, embedded systems, automotive and industrial control systems, and consumer electronics.
- What is the junction temperature range for the SN74LVC1T45DCKR? The junction temperature range is from -40°C to 125°C.
