SN74LVCZ32245A - 32-Bit Bus Transceiver with 3-State Outputs

This 32-bit (quad-octal) noninverting bus transceiver is designed for 2.7-V to 3.6-V V_CC operation.

The SN74LVCZ32245A 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.

Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators in a mixed 3.3-V/5-V system environment.

When V_CC is between 0 and 1.5 V, the device is in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.5 V, 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 hot-insertion applications using I_off and power-up 3-state. The I_off circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict.

Products containing the "SN74LVCZ32245A" keyword are: SN74LVCZ32245AGKER , SN74LVCZ32245AGKER , SN74LVCZ32245AZKER , SN74LVCZ32245AZKER

• Member of the Texas Instruments Widebus+™ Family
• Operates From 2.7 V to 3.6 V
• Inputs Accept Voltages to 5.5 V
• Max t_pd of 3.7 ns at 3.3 V
• I_off and Power-Up 3-State Support Hot Insertion
• Supports Mixed-Mode Signal Operation on All Ports (5-V Input/Output Voltage With 3.3-V V_CC)
• Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
• ESD Protection Exceeds JESD 22
  • 2000-V Human-Body Model (A114-A)
  • 1000-V Charged-Device Model (C101)

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