TXG4122
- Bidirectional I2C compatible communication
- Support for Standard-mode, Fast-mode, and Fast-mode Plus I2C operation
- Supports DV shifts up to ±40V
- 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:
- 16.5mA (Side 1) and 30mA (Side 2)
- Low power consumption at 400kHz (typical):
- ICC1 = 4.2mA, ICC2 = 0.9mA
- Operating temperature from –40°C to +125°C
- CMTI of 2kV/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 TXG4122 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 TXG4122 can solve the challenges of voltage translation across different ground levels up to ±40V. Both GND1 or GND2 can have an offset ground as long as the difference between GND1 and GND2 remains -40V to +40V.
The Simplified Block Diagram shows a common use case where DC shift occurs between GND1 to GND2 due to parasitic resistance or capacitance. The TXG4122 is able to support I2C-based communication between systems that have different supply voltages and different ground references. The leakage between GND1 and GND2 is typically 25nA when VCC to GND is shorted.
設計と開発
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TXG-4CH-EVM — TXG 4 チャネル グランド レベル シフタ向け評価基板
| パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
購入と品質
- RoHS
- REACH
- デバイスのマーキング
- リード端子の仕上げ / ボールの原材料
- MSL 定格 / ピーク リフロー
- MTBF/FIT 推定値
- 使用材料
- 認定試験結果
- 継続的な信頼性モニタ試験結果
- ファブ拠点
- アセンブリ拠点