SN74AVC2T245RSWR - Dual-Bit Level Shifter | Texas Instruments
MPN: SN74AVC2T245RSWR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.45 | $0.45 |
| 10 | $0.38 | $3.80 |
| 100 | $0.29 | $29.00 |
| 500 | $0.24 | $120.00 |
| 1,000 | $0.19 | $190.00 |
Drop-in alternatives for SN74AVC2T245RSWR β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
SN74AXC2T245RSWR
β Drop-Inπ Reference alternative (not in catalog)
SN74AVC4T245RSWR
β Drop-Inπ Reference alternative (not in catalog)
NLVSX2T245
β Drop-Inπ Reference alternative (not in catalog)
74AVC2T245
β Drop-Inπ Reference alternative (not in catalog)
SN74AVC2T245RSWR Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 |
| Bits per Channel | 1 |
| Supply Voltage (VCCA) | 1.2 V to 3.6 V |
| Supply Voltage (VCCB) | 1.2 V to 3.6 V |
| Output Type | 3-State |
| Propagation Delay Time | 2.4 ns (typical) |
| Output Current | 12 mA at 3.3V |
| Data Rate | 380 Mbps |
| Quiescent Current | 20 uA (typical) |
| Operating Temperature Range | -40C to +85C |
| Package Type | UQFN (RSW) 10-pin |
| Package Dimensions | 1.8 mm x 1.4 mm |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Logic Family | AVC |
SN74AVC2T245RSWR Pin Configuration
| Pin 1 | VCCA β Supply voltage for A-side |
| Pin 2 | 1A β Data I/O for channel 1, A-side |
| Pin 3 | 2A β Data I/O for channel 2, A-side |
| Pin 4 | GND β Ground |
| Pin 5 | DIR1 β Direction control for channel 1 |
| Pin 6 | DIR2 β Direction control for channel 2 |
| Pin 7 | 2B β Data I/O for channel 2, B-side |
| Pin 8 | 1B β Data I/O for channel 1, B-side |
| Pin 9 | VCCB β Supply voltage for B-side |
| Pin 10 | GND β Ground (exposed pad) |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
SN74AVC2T245RSWR is suitable for 6 applications: I2C Level Shifting, SPI Level Shifting, UART Level Shifting, GPIO Level Shifting, Industrial Control, Consumer Electronics.
I2C Level Shifting
The SN74AVC2T245RSWR is ideal for I2C level shifting between 1.8V and 3.3V domains. Its bidirectional capability and 3-state outputs allow multiple devices on the bus, while the wide supply range (1.2V to 3.6V) ensures compatibility with various I2C devices. The high data rate (380 Mbps) far exceeds I2C's standard 400 kHz, providing ample margin. The small UQFN package saves board space in compact designs. For proper operation, connect VCCA to the lower voltage rail and VCCB to the higher rail, and use pull-up resistors on both sides as required by I2C specifications.
Recommended
SPI Level Shifting
The SN74AVC2T245RSWR is well-suited for SPI level shifting between a 3.3V microcontroller and 1.8V peripherals. Its 2-bit configuration can handle MOSI and MISO lines, while the direction control pins (DIR1, DIR2) allow independent control for full-duplex communication. The propagation delay of 2.4 ns supports SPI clock rates up to 100 MHz, making it suitable for high-speed SPI. The 3-state outputs enable bus sharing with other devices. Ensure that the direction pins are set correctly to avoid bus contention during read and write operations.
Recommended
UART Level Shifting
The SN74AVC2T245RSWR is commonly used for UART level shifting between 3.3V and 1.8V logic. Its two channels can handle TX and RX lines, with DIR1 and DIR2 set to opposite directions for full-duplex communication. The device supports data rates up to 380 Mbps, far exceeding typical UART speeds, ensuring reliable data transfer. The low quiescent current (20 uA) is beneficial for battery-powered devices. The VCC isolation feature places outputs in high-impedance state when either supply is off, preventing backflow current during partial power-down.
Recommended
GPIO Level Shifting
The SN74AVC2T245RSWR is perfect for GPIO level shifting in mixed-voltage systems, such as connecting a 3.3V sensor to a 1.8V processor. Its bidirectional capability allows flexible configuration of each channel as input or output. The 3-state outputs enable multiple devices to share the same GPIO line. The wide supply range (1.2V to 3.6V) covers common logic levels. The small UQFN package is ideal for space-constrained PCBs. For GPIO applications, set the direction pins according to the data flow and ensure proper pull-up or pull-down resistors as needed.
Recommended
Industrial Control
In industrial control systems, the SN74AVC2T245RSWR is used to interface between different voltage domains, such as 5V sensors and 3.3V controllers. Its robust design operates over -40C to +85C, suitable for harsh environments. The high data rate (380 Mbps) supports fast communication protocols like SPI and UART. The VCC isolation feature ensures safe operation during power sequencing. The device's small footprint is advantageous in space-limited industrial modules. For reliable operation, use proper decoupling capacitors on both supply rails and follow the layout guidelines in the datasheet.
Recommended
Consumer Electronics
The SN74AVC2T245RSWR is widely used in consumer electronics for level shifting between application processors and peripherals, such as connecting a 1.8V application processor to a 3.3V display driver. Its low power consumption (20 uA quiescent) extends battery life in portable devices. The small UQFN package (1.8mm x 1.4mm) is ideal for compact designs like smartphones and wearables. The device supports high-speed interfaces, making it suitable for modern consumer applications. Ensure proper PCB layout with short traces and adequate grounding for signal integrity.
Recommended
Recommended Products Summary
Engineering reference data for SN74AVC2T245RSWR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SN74AXC2T245RSWR | SN74AVC4T245RSWR | NLVSX2T245 | 74AVC2T245 |
|---|---|---|---|---|---|
| Package | UQFN (RSW) 10-pin | UQFN (RSW) 10-pin | UQFN (RSW) 10-pin | UQFN 10-pin | UQFN 10-pin |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | onsemi | Nexperia |
| Number of Bits | 2 | 2 | 4 | 2 | 2 |
| Supply Voltage Range | 1.2V to 3.6V | 0.7V to 3.6V | 1.2V to 3.6V | 0.9V to 3.6V | 0.8V to 3.6V |
| Propagation Delay | 2.4 ns | 2.5 ns | 2.4 ns | 2.8 ns | 2.5 ns |
| Output Current | 12 mA | 12 mA | 12 mA | 12 mA | 12 mA |
| Data Rate | 380 Mbps | 380 Mbps | 380 Mbps | 380 Mbps | 380 Mbps |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Extended voltage range in drop-in replacement (vs SN74AXC2T245RSWR)
- Smaller package size (vs SN74AVC4T245RSWR)
- Lower quiescent current (vs TXS0102DCUR)
Design Notes
Ensure both VCCA and VCCB are powered within their specified ranges (1.2V to 3.6V). The VCC isolation feature places all I/O ports in high-impedance state when either supply is at GND, preventing backflow current. Use decoupling capacitors (0.1uF and 1uF) close to each supply pin to minimize noise and ensure stable operation.
For high-speed signals up to 380 Mbps, keep traces short and matched in length to minimize skew. Use a solid ground plane and place the device close to the connectors or drivers. Follow the layout guidelines in the datasheet, including proper via placement and avoiding sharp bends in traces.
Do not leave DIR1 and DIR2 floating; they must be tied to valid logic levels to avoid bus contention. When using the device for bidirectional communication, ensure the direction pins are switched at the correct time to prevent data corruption. Also, avoid exceeding the absolute maximum ratings on any pin.
Compliance Information
RoHS compliant per TI product page. Not AEC-Q100 qualified.
