SN74AUC32245 - 32-Bit Bus Transceiver With 3-State Outputs

This 32-bit noninverting 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 SN74AUC32245 is designed for asynchronous communication between data buses. The control-function implementation minimizes external timing requirements.

This device can be used as four 8-bit transceivers, two 16-bit transceivers, or one 32-bit transceiver. It allows data transmission 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 that 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 "SN74AUC32245" keyword are: SN74AUC32245GKER , SN74AUC32245GKER , SN74AUC32245GKERG4 , SN74AUC32245ZKER , SN74AUC32245ZKER

• Member of the Texas Instruments Widebus+™ Family
• 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 2 ns at 1.8 V
• Low Power Consumption, 40-uA 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)

Widebus+ is a trademark of Texas Instruments.