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Key Specifications
Product Description
This 2-bit non-inverting bus transceiver uses two separate configurable power-supply rails. The A ports are designed to track VCCA and accepts any supply voltage from 1.2V to 3.6V. The B ports are designed to track VCCB and accepts any supply voltage from 1.2V to 3.6V. This allows for universal low-voltage bidirectional translation and level-shifting between any of the 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V voltage nodes. The UM3682 is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR pin) input activate either the B port outputs or the A port outputs. The device transmits data from the A bus to the B bus when the B-port outputs are activated and from the B bus to the A bus when the A port outputs are activated.
The UM3682VH features active bus-hold circuitry，which holds unused or un-driven inputs at a valid logic state. Union does not recommend using pull-up or pull-down resistors with the bus-hold circuitry.
Features
- Input Voltage Range: 1.8V to 8V - VCC Isolation - 2-Rail Design - I/Os are 4.6V Tolerant - Partial Power-Down-Mode Operation - Bus Hold on Data Inputs - Maximum Data Rates -500 Mbps (1.8V to 3.3V) -320 Mbps (<1.8V to 3.3V) -320 Mbps (Level-Shifting to 2.5V or 1.8V) -280 Mbps (Level-Shifting to 1.5V) -240 Mbps (Level-Shifting to 1.2V) - Latch-Up performance exceeds 100mA per JESD 78, Class II - ESD Protection exceeds JESD 22 Applications
- Smartphones
- Servers
- Desktop PCs and Notebooks
- Other Portable Devices
Pin Configurations
 Ordering Information
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Application Notes
Product Selection Guide
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