Texas Instruments TXG104x 4-Bit Ground-Level Translator
Texas Instruments TXG104x 4-Bit Ground-Level Translator is a fixed-direction, non-galvanic-based voltage and ground-level translator supporting logic-level shifting between 1.71V and 5.5V and ground-level shifting up to ±10V. Compared to traditional level shifters, the TXG104x family can solve the challenges of voltage translation across different ground levels.
VCCA is referenced to GNDA, and VCCB is referenced to GNDB. Ax pins are referenced to the VCCA logic level, while Bx pins are referenced to the VCCB logic level. Both A port and B port can accept voltages from 1.71V to 5.5V. This device includes two enable pins that can place the respective outputs in a high-impedance state when the OE pin is connected to GND or left floating. In the event of input power or signal loss, the output is set to a default low when OE is High. The leakage between GNDA and GNDB is < 30nA when VCC to GND is shorted.
The Texas Instruments TXG104x helps improve noise immunity and power sequencing across different ground domains while providing low power consumption, latency, and channel-to-channel skew. It can suppress noise levels of 20VPP up to 45MHz. This device can support multiple interfaces such as SPI, UART, GPIO, and I2S.
Features
- Supports DC shifts up to ±10V
- AC noise rejection of 20VPP up to 45MHz
- CMTI of 1kV/µs
- Low prop delay (< 5ns) and Ch-Ch skew (0.35ns)
- Greater than 250Mbps
- Low power consumption (0.65mA per channel at 1Mbps, 1.8V)
- A fully configurable dual-rail design allows each port to operate from 1.71V to 5.5V
- 4, 2, 1 channel devices with multiple configurations will be available
- Two device variants
- TXG1041: three forward, one reverse
- TXG1042: two forward, two reverse
- Supports VCC disconnect feature (I/Os are forced into high-Z)
- Schmitt-trigger inputs allow for slow and noisy signals
- Inputs with integrated static pull-down resistors prevent channels from floating
- Operating temperature from –40°C to +125°C
- Latch-up performance exceeds 100mA per JESD 78, class II
- ESD protection exceeds JESD 22
- 4000V human-body model
- 500V charged-device model
- DBQ (QSOP-16) package
Applications
- Test and measurement
- Factory automation
- Appliances
- Electric power steering
- Vehicle control unit
- Automotive display
- Head unit and digital cockpit
Functional Block Diagram
Development Tool
Texas Instruments 14-24-LOGIC-EVM Logic Evaluation Module (EVM)
Generic evaluation module developed to support any TI logic leaded device in a 14 to 24 pin count.