USB1T11ABQX

Product Overview

The Fairchild Semiconductor USB1T11ABQX is a USB 1.1 transceiver for half-duplex USB communication at 12 Mbps. The device is a surface-mount interface IC that uses one driver and one receiver and a 16-MLP (3x3) package with an exposed pad. It operates from a 3 V to 3.6 V supply over an ambient temperature range of -40°C to 85°C. This configuration supports compact USB interface designs that require USB 1.1 signaling.

Key Features

• USB 1.1 protocol support
• Half-duplex operation with one driver and one receiver
• Data rate of 12 Mbps
• Supply voltage range of 3 V to 3.6 V
• Operating temperature range of -40°C to 85°C
• 16-MLP (3x3) surface-mount package with exposed pad

Applications

• Embedded systems that require USB 1.1 signaling at 12 Mbps
• Compact USB interface boards using a 3x3 surface-mount package
• USB peripheral designs using half-duplex communication

Design & Procurement Notes

When selecting this device, confirm that the system USB link uses USB 1.1 and does not require simultaneous bidirectional operation, because the transceiver is half-duplex with one driver and one receiver. Verify that the supply voltage remains within 3 V to 3.6 V and that the final assembly environment falls within -40°C to 85°C. The 16-MLP (3x3) exposed-pad package requires surface-mount layout, pad handling, and attention to soldering and thermal management. These checks help ensure the package, supply, temperature, and interface characteristics match the intended USB 1.1 design.