SN74AUC245 - Octal Bus Transceiver with 3-State Outputs

This octal bus transceiver is operational at 0.8-V to 2.7-V V_CC, but is designed specifically for 1.65-V to 1.95-V V_CC operation.

The SN74AUC245 is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE)\ input can be used to disable the device so the buses are effectively isolated.

To ensure the high-impedance state during power up or power down, OE\ should be tied to V_CC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

This device is fully specified for partial-power-down applications using I_off. The I_off circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

Products containing the "SN74AUC245" keyword are: SN74AUC245GQNR , SN74AUC245RGYR , SN74AUC245RGYR , SN74AUC245RGYR(MS245) , SN74AUC245RGYRG4 , SN74AUC245ZQNR , SN74AUC245ZQNR

• Optimized for 1.8-V Operation and Is 3.6-V I/O Tolerant to Support Mixed-Mode Signal Operation
• I_off Supports Partial-Power-Down Mode Operation
• Sub 1-V Operable
• Max t_pd of 1.7 ns at 1.8 V
• Low Power Consumption, 20-µA Max I_CC
• ±8-mA Output Drive at 1.8 V
• Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
• ESD Protection Exceeds JESD 22
  - 2000-V Human-Body Model (A114-A)
  - 200-V Machine Model (A115-A)
  - 1000-V Charged-Device Model (C101)