SN74AVC2T244 - Dual-Bit Dual-Supply Bus Transceiver

This 2-bit unidirectional translator uses two separate configurable power-supply rails. The A port is designed to track V_CCA. V_CCA accepts any supply voltage from 0.9 V to 3.6 V. The B port is designed to track V_CCB. V_CCB accepts any supply voltage from 0.9 V to 3.6 V. This allows for low-voltage translation between 0.9-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V and 3.6-V voltage nodes. For the SN74AVC2T244, when the output-enable (OE) input is high, all outputs are placed in the high-impedance state. The SN74AVC2T244 is designed so that the OE input circuit is referenced to V_CCA. This device is fully specified for partial-power-down applications using Ioff. The I_off circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

• Wide Operating V_CC Range of 0.9 V to 3.6 V
• Low Static-Power Consumption, 6-µA Max I_CC
• Output Enable Feature Allows User to Disable Outputs to Reduce Power Consumption
• ±24-mA Output Drive at 3.0 V
• I_off Supports Partial Power-Down-Mode Operation
• Input Hysteresis Allows Slow Input Transition and Better Switching Noise Immunity at Input
• Maximum Data Rates
  • 380 Mbps (1.8-V to 3.3-V Translation)
  • 200 Mbps (<1.8-V to 3.3-V Translation)
  • 200 Mbps (Translate to 2.5 V or 1.8 V)
  • 150 Mbps (Translate to 1.5 V)
  • 100 Mbps (Translate to 1.2 V)
• Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
• ESD Protection Exceeds JESD 22
  • 5000-V Human-Body Model (A114-A)