TXS0102DCUR - 2-Bit Bidirectional Level Shifter | TI
MPN: TXS0102DCUR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.45 | $0.45 |
| 10 | $0.38 | $3.80 |
| 100 | $0.28 | $28.00 |
| 500 | $0.22 | $110.00 |
| 1,000 | $0.18 | $180.00 |
Drop-in alternatives for TXS0102DCUR 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:
TXS0102DCUT
β Drop-Inπ Reference alternative (not in catalog)
TXS0102DCURG4
β Drop-Inπ Reference alternative (not in catalog)
TXS0102DCU
β Drop-Inπ Reference alternative (not in catalog)
TXS0102DCUR-P
β Drop-Inπ Reference alternative (not in catalog)
UM3202V
β Drop-Inπ Reference alternative (not in catalog)
TXS0102DCUR Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 |
| Number of Circuits | 1 |
| VCCA Range | 1.65 V to 3.6 V |
| VCCB Range | 2.3 V to 5.5 V |
| Max Data Rate (Push-Pull) | 24 Mbps |
| Max Data Rate (Open-Drain) | 2 Mbps |
| Direction Control | No (auto-direction) |
| Output Type | Open-Drain, Push-Pull |
| Operating Temperature Range | -40Β°C to 85Β°C |
| Package Type | VSSOP-8 (DCU) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| REACH Status | Compliant |
| AEC-Q100 Qualified | No |
| Supply Current (Quiescent) | [DATA_NEEDED: Supply current] |
TXS0102DCUR Pin Configuration
| Pin 1 | VCCA β A-port supply voltage, 1.65V to 3.6V |
| Pin 2 | A1 β A-port input/output 1 |
| Pin 3 | A2 β A-port input/output 2 |
| Pin 4 | GND β Ground |
| Pin 5 | B2 β B-port input/output 2 |
| Pin 6 | B1 β B-port input/output 1 |
| Pin 7 | VCCB β B-port supply voltage, 2.3V to 5.5V |
| Pin 8 | OE β Output enable, active high |
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
TXS0102DCUR is suitable for 6 applications: I2C Level Shifting, UART Level Shifting, Sensor Interfacing, SMBus Communication, Mixed-Voltage Logic Interfacing, Consumer Electronics.
I2C Level Shifting
The TXS0102DCUR is ideal for I2C level shifting between 1.8V, 2.5V, 3.3V, and 5V devices. Its open-drain support and auto-direction sensing allow seamless bidirectional communication without a direction pin. With a 2 Mbps open-drain data rate, it comfortably handles standard and fast-mode I2C (up to 400 kbps). The device's one-shot architecture accelerates rising edges, ensuring reliable operation with capacitive loads typical of I2C buses. Place pull-up resistors on both A and B sides as required by the I2C specification.
Recommended
UART Level Shifting
The TXS0102DCUR is well-suited for UART communication between 3.3V microcontrollers and 5V peripherals. Its push-pull data rate of 24 Mbps far exceeds typical UART speeds (up to a few Mbps), providing ample margin. The auto-direction sensing simplifies the connection of TX and RX lines, as no direction control is needed. The device's low quiescent current and wide VCCA/VCCB range make it versatile for battery-powered and industrial applications. Ensure proper decoupling on VCCA and VCCB to maintain signal integrity.
Recommended
Sensor Interfacing
The TXS0102DCUR enables interfacing between low-voltage sensors (e.g., 1.8V) and higher-voltage microcontrollers (e.g., 3.3V or 5V). Its bidirectional capability supports both data and control lines, such as interrupt outputs and enable signals. The device's open-drain support is particularly useful for sensors with open-drain outputs. With a wide operating temperature range of -40Β°C to 85Β°C, it is suitable for industrial and automotive environments. The small VSSOP-8 package saves board space in compact designs.
Recommended
SMBus Communication
The TXS0102DCUR is compatible with SMBus, which is similar to I2C but with stricter timing and voltage requirements. Its open-drain data rate of 2 Mbps exceeds SMBus's maximum of 100 kbps, ensuring reliable operation. The device's auto-direction sensing and lack of direction control simplify SMBus design. The VCCA range of 1.65V to 3.6V and VCCB range of 2.3V to 5.5V cover typical SMBus voltage domains. Use appropriate pull-up resistors as specified by the SMBus specification.
Recommended
Mixed-Voltage Logic Interfacing
The TXS0102DCUR is used to interface between different logic voltage levels in mixed-voltage systems, such as connecting a 1.8V FPGA to a 3.3V peripheral. Its push-pull data rate of 24 Mbps supports high-speed signals, making it suitable for SPI and other synchronous interfaces. The device's auto-direction sensing eliminates the need for direction control, reducing GPIO usage. The VSSOP-8 package is ideal for space-constrained designs. Ensure that the OE pin is properly controlled to avoid bus contention during power-up.
Recommended
Consumer Electronics
The TXS0102DCUR is widely used in consumer electronics for level shifting between different voltage domains, such as in smartphones, tablets, and wearables. Its low cost and small package make it ideal for high-volume production. The device supports I2C, SMBus, and UART, which are common interfaces in consumer devices. The wide operating temperature range and RoHS compliance ensure suitability for various applications. The auto-direction sensing simplifies design and reduces component count.
Recommended
Recommended Products Summary
Engineering reference data for TXS0102DCUR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TXS0102DCUT | TXS0102DCURG4 | UM3202V |
|---|---|---|---|---|
| Package | VSSOP-8 (DCU) | VSSOP-8 (DCU) | VSSOP-8 (DCU) | VSSOP-8 |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Union Semiconductor |
| VCCA Range | 1.65V to 3.6V | 1.65V to 3.6V | 1.65V to 3.6V | 1.65V to 3.6V |
| VCCB Range | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V |
| Max Data Rate (Push-Pull) | 24 Mbps | 24 Mbps | 24 Mbps | 24 Mbps |
| Max Data Rate (Open-Drain) | 2 Mbps | 2 Mbps | 2 Mbps | 2 Mbps |
| Direction Control | No (auto-direction) | No (auto-direction) | No (auto-direction) | No (auto-direction) |
| Operating Temperature | -40Β°C to 85Β°C | -40Β°C to 85Β°C | -40Β°C to 85Β°C | -40Β°C to 85Β°C |
Key Differentiators
- Supports open-drain and push-pull applications (vs TXB0102DCUR)
- Auto-direction sensing (vs TXS0102DCU)
- Cost-effective cross-brand alternative (vs UM3202V)
Design Notes
Place decoupling capacitors (0.1uF) close to VCCA and VCCB pins to ensure stable operation. Use a ground plane to minimize noise and ensure signal integrity. Keep traces short and direct for high-speed signals.
Ensure that the OE pin is properly controlled. When OE is low, the outputs are disabled and the device is in high-impedance state. Do not leave OE floating; connect it to VCCA or a logic high to enable the device.
For open-drain applications, external pull-up resistors are required on both A and B sides. The value of the pull-up resistors should be chosen based on the bus capacitance and desired data rate. For I2C, typical values are 4.7k ohms for 100 kbps and 2.2k ohms for 400 kbps.
Compliance Information
RoHS and REACH compliant per TI product page. Not AEC-Q100 qualified.
