LSF0108QPWRQ1 - Automotive 8-Ch Bidirectional Level Translator | TI
MPN: LSF0108QPWRQ1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.89 | $0.89 |
| 10 | $0.78 | $7.80 |
| 100 | $0.67 | $67.00 |
| 500 | $0.58 | $290.00 |
| 1,000 | $0.52 | $520.00 |
Drop-in alternatives for LSF0108QPWRQ1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
LSF0108PWR
✅ Drop-In📋 Reference alternative (not in catalog)
TXB0108PWR
✅ Drop-In✓ In Stock
$0.6 / Unit
View Datasheet →SN74LVC8T245PWR
✅ Drop-In✓ In Stock
$0.42 / Unit
View Datasheet →NVT2008
✅ Drop-In📋 Reference alternative (not in catalog)
LSF0108QPWRQ1 Maximum Ratings & Electrical Characteristics
| Number of Channels | 8 |
| Direction | Bidirectional |
| Voltage Range (VCCA) | 0.95 V to 4.5 V |
| Voltage Range (VCCB) | 1.8 V to 5 V |
| Propagation Delay Time | 1.5 ns (typical) |
| Output Type | Open-Drain, Push-Pull |
| Package | TSSOP-20 (PW) |
| Operating Temperature Range | -40°C to 125°C |
| Automotive Grade | AEC-Q100 Qualified |
| Supply Voltage (VCCA) | 0.95 V to 4.5 V |
| Supply Voltage (VCCB) | 1.8 V to 5 V |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| MSL Level | 1 |
| Number of Pins | 20 |
LSF0108QPWRQ1 Pin Configuration
| Pin 1 | A1 — I/O channel 1 (low-voltage side) |
| Pin 2 | A2 — I/O channel 2 (low-voltage side) |
| Pin 3 | A3 — I/O channel 3 (low-voltage side) |
| Pin 4 | A4 — I/O channel 4 (low-voltage side) |
| Pin 5 | A5 — I/O channel 5 (low-voltage side) |
| Pin 6 | A6 — I/O channel 6 (low-voltage side) |
| Pin 7 | A7 — I/O channel 7 (low-voltage side) |
| Pin 8 | A8 — I/O channel 8 (low-voltage side) |
| Pin 9 | GND — Ground |
| Pin 10 | VCCB — High-voltage supply (1.8V to 5V) |
| Pin 11 | B8 — I/O channel 8 (high-voltage side) |
| Pin 12 | B7 — I/O channel 7 (high-voltage side) |
| Pin 13 | B6 — I/O channel 6 (high-voltage side) |
| Pin 14 | B5 — I/O channel 5 (high-voltage side) |
| Pin 15 | B4 — I/O channel 4 (high-voltage side) |
| Pin 16 | B3 — I/O channel 3 (high-voltage side) |
| Pin 17 | B2 — I/O channel 2 (high-voltage side) |
| Pin 18 | B1 — I/O channel 1 (high-voltage side) |
| Pin 19 | VCCA — Low-voltage supply (0.95V to 4.5V) |
| Pin 20 | EN — 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
LSF0108QPWRQ1 is suitable for 6 applications: Automotive Body Control Module, Infotainment System, Industrial Sensor Interface, Consumer Electronics, IoT and Smart Home, Test and Measurement Equipment.
Automotive Body Control Module
The LSF0108QPWRQ1 is ideal for automotive body control modules where multiple voltage domains (e.g., 1.8V MCU, 3.3V sensors, 5V actuators) must communicate reliably. Its AEC-Q100 qualification ensures operation from -40°C to 125°C, and the bidirectional capability simplifies wiring by eliminating direction control. The 8 channels handle multiple signals like UART, SPI, and GPIO, while the 1.5ns propagation delay supports high-speed communication. The pass-gate architecture with external pull-ups allows flexible voltage scaling, making it suitable for mixed-voltage automotive networks.
Recommended
Infotainment System
In infotainment systems, the LSF0108QPWRQ1 translates between the application processor (1.8V) and peripherals like displays, touch controllers, and audio codecs (3.3V or 5V). Its bidirectional operation supports I2C and UART interfaces without direction pins, reducing GPIO usage. The wide voltage range (0.95V to 5V) accommodates various peripheral voltages, while the automotive grade ensures reliability in vehicle environments. The TSSOP-20 package fits compact PCB layouts, and the 1.5ns delay maintains signal integrity for high-speed data lines.
Recommended
Industrial Sensor Interface
The LSF0108QPWRQ1 is well-suited for industrial sensor interfaces where sensors operate at different voltages (e.g., 3.3V or 5V) and connect to a low-voltage PLC or MCU. Its bidirectional level shifting allows seamless communication with I2C, SPI, and UART sensors. The device's wide operating temperature range (-40°C to 125°C) ensures performance in harsh industrial environments. The open-drain support is particularly useful for I2C buses, and the 8 channels can handle multiple sensors simultaneously. The pass-gate architecture provides low propagation delay, enabling real-time data acquisition.
Recommended
Consumer Electronics
In consumer electronics like smartphones, tablets, and wearables, the LSF0108QPWRQ1 enables communication between low-voltage application processors (1.8V) and peripherals such as displays, memory cards, and sensors (3.3V). Its bidirectional capability simplifies design by eliminating direction control, and the small TSSOP-20 package is ideal for space-constrained PCBs. The device supports high-speed interfaces with 1.5ns propagation delay, ensuring reliable data transfer. The wide voltage range (0.95V to 5V) provides flexibility for various peripheral voltages, making it a versatile solution for mixed-voltage consumer devices.
Recommended
IoT and Smart Home
The LSF0108QPWRQ1 is perfect for IoT and smart home devices that integrate multiple sensors and communication modules operating at different voltages. For example, a 1.8V microcontroller can interface with 3.3V Zigbee or Wi-Fi modules, temperature sensors, and actuators. The bidirectional level shifting supports I2C and UART protocols commonly used in IoT. The device's low power consumption and wide voltage range make it suitable for battery-powered devices. The automotive-grade version ensures reliability in outdoor or extreme environments, while the 8 channels provide ample I/O for multiple peripherals.
Recommended
Test and Measurement Equipment
In test and measurement equipment, the LSF0108QPWRQ1 translates between different logic levels in data acquisition systems, oscilloscopes, and signal generators. It allows a 5V FPGA to interface with 3.3V ADCs or DACs, ensuring accurate signal transfer. The bidirectional capability is useful for bidirectional buses like I2C, and the 1.5ns propagation delay preserves signal integrity for high-speed measurements. The wide voltage range (0.95V to 5V) accommodates various instrument voltages, and the automotive-grade version provides extended temperature operation for field use. The TSSOP-20 package is suitable for dense PCB layouts in benchtop instruments.
Recommended
Recommended Products Summary
Engineering reference data for LSF0108QPWRQ1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LSF0108PWR | TXB0108PWR | SN74LVC8T245PWR | NVT2008 |
|---|---|---|---|---|---|
| Package | TSSOP-20 (PW) | TSSOP-20 (PW) | TSSOP-20 (PW) | TSSOP-20 (PW) | TSSOP-20 (PW) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | NXP Semiconductors |
| Number of Channels | 8 | 8 | 8 | 8 | 8 |
| Direction | Bidirectional (no DIR pin) | Bidirectional (no DIR pin) | Bidirectional (no DIR pin) | Direction-controlled (DIR pin) | Bidirectional (no DIR pin) |
| Voltage Range (VCCA) | 0.95V to 4.5V | 0.95V to 4.5V | 1.2V to 3.6V | 1.2V to 3.6V | 0.95V to 3.6V |
| Voltage Range (VCCB) | 1.8V to 5V | 1.8V to 5V | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V |
| Propagation Delay | 1.5ns (typical) | 1.5ns (typical) | 1.5ns (typical) | 3.5ns (typical) | 1.5ns (typical) |
| Automotive Grade | Yes (AEC-Q100) | No | No | No | No |
Key Differentiators
- Automotive-grade qualification (AEC-Q100) (vs LSF0108PWR)
- Bidirectional without direction pin (vs SN74LVC8T245PWR)
- Supports open-drain signals (vs TXB0108PWR)
Design Notes
Place pull-up resistors on both A and B sides as required by the application. For I2C, typical values are 2.2kΩ to 10kΩ depending on bus capacitance and speed. Ensure the pull-up resistors are connected to the respective VCCA and VCCB rails. Keep traces short to minimize parasitic capacitance and maintain signal integrity.
The LSF0108QPWRQ1 requires external pull-up resistors for proper operation. The VCCA and VCCB pins must be connected to the respective supply rails, and the EN pin must be tied high to enable the device. Ensure the supply voltages are within the specified ranges (VCCA: 0.95V-4.5V, VCCB: 1.8V-5V) to avoid damage.
For high-speed signals, place the LSF0108QPWRQ1 close to the connector or the device it interfaces with to minimize trace length. Use a solid ground plane and avoid vias on critical signal lines. Decouple VCCA and VCCB with 0.1µF capacitors placed close to the pins to reduce noise.
Compliance Information
Automotive grade AEC-Q100 qualified per TI product page. RoHS compliant. Halogen-free status not specified in provided data.
