Part Number	Description	Status	VCCA(Min)(V)	VCCA(Max)(V)	VCCB(Min)(V)	VCCB(Max)(V)	Max Data Rate(Mbps)	No. of Bits	Operating Temperature Range(℃)	Pin/Package	EV Kit Available?
UM74AVC8T245QB	8-Bit Dual-Supply Bus Transceiver With Configurable Voltage Translation and 3-State Outputs	Preview	1.0	3.6	1.0	3.6	400	8	-40 to 125	24/QFN 3.5×5.5

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Product Description

 

The UM74AVC8T245 is designed for asynchronous communication between two 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 of the direction-control input (DIR). The output-enable (/OE) input can be used to disable the outputs so the buses are effectively isolated.

The UM74AVC8T245 is designed so that the control pins (DIR and /OE) are referenced to V_CCA voltage.

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

The V_CC isolation feature is designed so that if either V_CC input supply is below 100mV, all level shifter outputs are disabled and placed into a high impedance state.

To put the device into the high-impedance state during power up or power down, tie /OE to V_CC through a pull-up resistor; the current-sinking capability of the driver determines the minimum value of the resistor.

The UM74AVC8T245QB is available in QFN24 3.5×5.5 package.

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