The TCA39416 device is a directionless voltage-level translator specifically designed for translating logic voltage levels. The device is MIPI I3C v1.1.1 compatible supporting data rates up to 12.5 Mbps in I3C Single Data Rate (SDR) mode and 25 Mbps in I3C High Data Rate (HDR-DDR) mode. Like SDR Mode, HDR-DDR Mode uses SCL as a clock; however unlike SDR, data is sampled on both edges of clock SCL effectively doubling the data rate achieving 25 Mbps.

The A and B ports are able to accept I/O voltages ranging from 0.72 V to 1.98 V. V_CCA must be ≤ V_CCB to ensure proper operation. The device is a pass-gate architecture with edge-rate accelerators (one-shots) to improve the overall data rate and supports both high speed push-pull and low speed open-drain operation.

MIPI I3C specification requires dynamic pull-up control to switch between “strong pull-up” and “weak pull-up” to optimize open-drain and push-pull timing requirements. In TCA39416, the internal 10-kΩ pull-up resistors on Ax and Bx pins are enabled based on respective VCC voltage and OE input and act as High-Keeper when the bus is high.

When OE is low, the TCA39416 is disabled, the one shots and internal pull ups are also disabled.