RS74AVC1T45XH6

This single-bit, dual-supply bus transceiver features two independent configurable supply rails. The RS74AVC1T45 is optimized for operation with VCCA/VCCB set to 1.4V to 3.6V, and can also operate with VCCA/VCCB voltages as low as 1.2V. Port A is designed to track VCCA, which accepts any supply voltage from 1.2V to 3.6V; Port B is designed to track VCCB, which accepts any supply voltage from 1.2V to 3.6V. This enables universal low-voltage bidirectional translation between the 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V voltage nodes. The RS74AVC1T45 is designed for asynchronous communication between two data buses. The logic level of the direction control (DIR) input activates either the Port B output or the Port A output. When the Port B output is activated, the device transmits data from the A bus to the B bus; when the Port A output is activated, the device transmits data from the B bus to the A bus. The input circuits of both Port A and Port B are always active, and a logic high or low level must be applied to prevent excessive ICC and ICCZ. The DIR input of the RS74AVC1T45 is powered by VCCA. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuit disables the outputs to prevent damaging backflow current when the device is powered down. The VCC isolation feature ensures that if either VCC input is grounded, both ports are placed in a high-impedance state.

Applications

• Consumer electronics
• Industrial
• Enterprise
• Telecommunications

Key features

• Fully configurable dual-rail design, allowing each port to operate across the full supply voltage range of 1.2V to 3.6V
• VCC isolation feature: if either VCC input is grounded, both ports are in a high-impedance state
• DIR input circuit referenced to VCCA
• Output drive of ±12mA at 3.3V
• I/O tolerant up to 4.6V
• Ioff supports partial power-down mode operation
• Typical maximum data rates: 380Mbps (1.8V to 3.3V translation), 200Mbps (below 1.8V to 3.3V translation), 200Mbps (translation to 2.5V or 1.8V)
• Extended temperature range: -40°C to 125°C