TXG8122-Q1
- AEC-Q100 qualified for automotive applications
- Bidirectional I2C compatible communication
- Support for Standard-mode, Fast-mode, and Fast-mode Plus I2C operation
- Supports DV shifts up to ±80V
- Data rate up to 1MHz
- Side 1 Supply Range: 3V to 5.5V
- Side 2 Supply Range: 2.25V to 5.5V
- Maximum capacitive load:
- 80pF (Side 1) and 550pF (Side 2)
- Open -drain outputs with current sink
capability:
- 3.5mA (Side 1) and 50mA (Side 2)
- Low power consumption at 400kHz (typical):
- ICC1 = 3.1mA, ICC2 = 0.7mA
- Operating temperature from –40°C to +125°C
- CMTI of 500V/µs
- Latch-up performance exceeds 100mA per JESD 78, class II
- ESD protection exceeds JESD 22
- 2000V human-body model
- 500V charged-device model
- Package options provided: SOIC (8D), WSON (8DSG), SOT-23 (8DDF)
The TXG8122-Q1 device is a dual bidirectional, non-galvanic based voltage and ground-level translator for I2C. This device supports two separate configurable power-supply rails. Side 1 is designed to track VCC1 which accepts any supply voltage from 3V to 5.5V. Side 2 is designed to track VCC2 which accepts any supply voltage from 2.25V to 5.5V. Compared to traditional level shifters, the TXG8122-Q1 can solve the challenges of voltage translation across different ground levels up to ±80V. Both GNDA or GNDB can have an offset ground as long as the difference between GNDA and GNDB remains -80V to +80V.
The Simplified Block Diagram shows a common use case where DC shift occurs between GNDA to GNDB due to parasitic resistance or capacitance. The TXG8122-Q1 is able to support I2C-based communication between systems that have different supply voltages and different ground references. The leakage between GNDA and GNDB is typically 50nA when VCC to GND is shorted.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | TXG8122-Q1 ± 80V Bidirectional Ground-Level Translator for I2C datasheet | PDF | HTML | 2025. 6. 6 | |
| Application brief | Solving Ground Shift Issues in Phase Array Satellites | PDF | HTML | 2026. 7. 30 | ||
| Application brief | Top Questions about Ground-Level Translators | PDF | HTML | 2026. 5. 27 | ||
| 애플리케이션 노트 | Solving Ground Mismatch in Automotive Systems | PDF | HTML | 2026. 3. 3 | ||
| 기술 문서 | 접지가 불안정하신가요? 새로운 접지 레벨 트랜스레이터로 오 프셋 문제를 해결하세요. (Rev. A) | PDF | HTML | Download English Version (Rev.A) | 2025. 6. 5 | |
| Application brief | Not All Grounds Are 0V | PDF | HTML | 2025. 5. 21 | ||
| Product overview | TI's Latest Ground-Level Translators | PDF | HTML | 2025. 5. 7 |
설계 및 개발
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TXG-4CH-EVM — 4채널 접지 레벨 변환기용 TXG 평가 모듈(EVM)
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |