TI SN74ALVC164245DL

This 16-bit (dual-octal) noninverting bus transceiver contains two separate supply rails. B port has V(CCB), which is set to operate at 3.3 V and 5 V. A port has V(CCA), which is set to operate at 2.5 V and 3.3 V. This allows for translation from a 2.5-V to a 3.3-V environment, and vice versa, or from a 3.3-V to a 5-V environment, and vice versa.

The SN74ALVC164245 is designed for asynchronous communication between data buses. The control circuitry (1DIR, 2DIR, and 2OE(overline)) is powered by VCCA.

To ensure the high-impedance state during power up or power down, the output-enable (OE(overline)) input 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 logic levels of the direction-control (DIR) input and the output-enable (OE(overline)) 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 always is active and must have a logic HIGH or LOW level applied to prevent excess I(CC) and ICCZ.

• Member of the Texas Instruments Widebus Family
• Maximum t(pd) of 5.8 ns at 3.3 V
• ±24-mA Output Drive at 3.3 V
• Control Inputs V(IH)/V(IL) Levels Are Referenced to V(CCA) Voltage
• Latch-Up Performance Exceeds 250 mA Per JESD 17

• Electronic Points of Sale
• Printers and Other Peripherals
• Motor Drives
• Wireless and Telecom Infrastructures
• Wearable Health and Fitness Devices