SN74LVC8T245-Q1 Texas instruments

The SN74LVC8T245-Q1 is an eight bit non-inverting bus transceiver with configurable dual power supply rails that enables bidirectional voltage level translation. The SN74LVC8T245-Q1 is optimized to operate with V CCA and V CCB set at 1.65 V to 5.5 V. The A port is designed to track V CCA. V CCA accepts any supply voltage from 1.65 V to 5.5 V. The B port is designed to track V CCB. V CCB accepts any supply voltage from 1.65 V to 5.5 V. This allows for universal low-voltage bidirectional translation between any of the 1.8-V, 2.5-V, 3.3-V, and 5.5-V voltage nodes.The SN74LVC8T245-Q1 is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) input and the output-enable ( OE) input activate either the B-port outputs or the A-port outputs or place both output ports into the high-impedance mode. The device transmits data from the A bus to the B bus when the B-port outputs are activated, and from the B bus to the A bus when the A-port outputs are activated. The input circuitry on both A and B ports is always active and must have a logic HIGH or LOW level applied to prevent excess I CC and I CCZ.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. The V CC isolation feature ensures that if either V CC input is at GND, all outputs are in the high-impedance state. 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.The SN74LVC8T245-Q1 is designed so that the control pins (DIR and OE) are supplied by V CCA.

Technology family	LVC
Applications	GPIO
Bits (#)	8
High input voltage (min) (V)	1.08
High input voltage (max) (V)	5.5
Vout (min) (V)	1.65
Vout (max) (V)	5.5
Data rate (max) (MBits)	200
IOH (max) (mA)	-32
IOL (max) (mA)	32
Supply current (max) (µA)	25
Features	Output enable, Overvoltage tolerant inputs, Partial power down (Ioff)
Input type	Standard CMOS
Output type	3-State, Balanced CMOS, Push-Pull
Rating	Automotive
Operating temperature range (°C)	-40 to 125