SN74ALVC164245

具有三态输出的 16 位 2.5V 至 3.3V/3.3V 至 5V 电平转换收发器

This 16-bit dual-octal noninverting bus transceiver contains two separate supply rails. B port has VCCB, which is set to operate at 3.3 V and 5 V. A port has VCCA, 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 is designed for asynchronous communication between data buses. The control circuitry 1DIR, 2DIR, 1OE, and 2OE is powered by VCCA.

To ensure the high-impedance state during power up or power down, the output-enable OE input should be tied to VCC 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 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 ICC and ICCZ.

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Member of the Texas Instruments Widebus™ Family

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Maximum tpd of 5.8 ns at 3.3 V

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±24-mA Output Drive at 3.3 V

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Control Inputs VIH/VIL Levels Are Referenced to VCCA Voltage

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Latch-Up Performance Exceeds 250 mA Per JESD 17

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APPLICA ONS

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Electronic Points of Sale

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Printers and Other Peripherals

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Motor Drives

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Wireless and Telecom Infrastructures

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Wearable Health and Fitness Devices

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