Overview
The SN74LVC2T45YZPRB, produced by Texas Instruments, is a dual-bit noninverting bus transceiver designed for asynchronous communication between two data buses. This device features a fully configurable dual-rail design, allowing each port to operate over a wide power-supply range from 1.65 V to 5.5 V. It is particularly useful for voltage-level translation between different voltage nodes, such as 1.8 V, 2.5 V, 3.3 V, and 5 V. The SN74LVC2T45YZPRB is packaged in an 8-pin DSBGA (NanoFree™ package) and is suitable for high-speed applications with data rates up to 420 Mbps.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | 8-DSBGA, 8-WCSP (1.9x0.9) | |
| Pins | 8 | |
| Operating Temperature Range | -40°C to 85°C | °C |
| Voltage - VCCA | 1.65 V to 5.5 V | V |
| Voltage - VCCB | 1.65 V to 5.5 V | V |
| Output Drive at 3.3 V | ±24 mA | mA |
| Data Rate | Up to 420 Mbps | Mbps |
| ESD Protection | 4000-V Human-Body Model, 200-V Machine Model, 1000-V Charged-Device Model | V |
| Mounting Type | Surface Mount | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Key Features
- Fully configurable dual-rail design allowing each port to operate over the full 1.65-V to 5.5-V power-supply range.
- VCC isolation feature – if either VCC input is at GND, both ports are in the high-impedance state.
- DIR input circuit referenced to VCCA.
- Low power consumption, 4-µA maximum ICC.
- Available in the Texas Instruments NanoFree™ package.
- ±24-mA output drive at 3.3 V.
- Ioff supports Partial-Power-Down mode operation.
- High data rates: up to 420 Mbps (3.3-V to 5-V translation), 210 Mbps (translate to 3.3 V), 140 Mbps (translate to 2.5 V), and 75 Mbps (translate to 1.8 V).
- Latch-up performance exceeds 100 mA per JESD 78, Class II.
- ESD protection exceeds JESD 22 standards.
Applications
The SN74LVC2T45YZPRB is versatile and can be used in various applications, including:
- Consumer electronics: for voltage-level translation between different components.
- Mobile devices: to enable communication between different voltage domains within the device.
- Communication infrastructure: in networking equipment and data transmission systems.
- Automotive applications: qualified for use in automotive systems due to its robust specifications and temperature range.
Q & A
- What is the primary function of the SN74LVC2T45YZPRB?
The primary function is to act as a dual-bit noninverting bus transceiver for asynchronous communication between two data buses, providing voltage-level translation.
- What is the operating voltage range for VCCA and VCCB?
The operating voltage range for both VCCA and VCCB is from 1.65 V to 5.5 V.
- What is the maximum data rate supported by the SN74LVC2T45YZPRB?
The maximum data rate supported is up to 420 Mbps for 3.3-V to 5-V translation.
- What is the purpose of the DIR input circuit?
The DIR input circuit determines the direction of data transmission between the A and B ports, and it is referenced to VCCA.
- What is the significance of the VCC isolation feature?
If either VCC input is at GND, both ports are in the high-impedance state, preventing unintended data transmission.
- What type of package does the SN74LVC2T45YZPRB come in?
The device is packaged in an 8-pin DSBGA (NanoFree™ package).
- What is the ESD protection level of the SN74LVC2T45YZPRB?
The device has ESD protection exceeding 4000-V Human-Body Model, 200-V Machine Model, and 1000-V Charged-Device Model.
- Is the SN74LVC2T45YZPRB suitable for automotive applications?
Yes, it is qualified for automotive applications due to its robust specifications and temperature range.
- What is the moisture sensitivity level (MSL) of the SN74LVC2T45YZPRB?
The MSL is 1 (Unlimited).
- What is the output drive capability of the SN74LVC2T45YZPRB at 3.3 V?
The output drive capability is ±24 mA at 3.3 V.
