ET7228

Analog Switches - Special Purpose Overview

The ET7228 is a USB 2.0 switch IC manufactured by ETEK MICROELECTRONICS, designed for high-speed data routing within compact electronic systems. It features two independent channels supporting USB 2.0 specifications with a maximum data rate of 480 Mbps. The device operates on a single supply voltage ranging from 1.65V to 4.5V and exhibits an on-state resistance of 8 Ohms. With a -3dB bandwidth of 550MHz, it ensures signal integrity across the specified frequency range. The component is housed in a 10-QFN package measuring 1.8x1.4 mm, suitable for surface mount assembly. It functions as a multiplexer/demultiplexer circuit with a 1:2 or 2:1 configuration and supports DPDT switching logic.

Analog Switches - Special Purpose Feature Summary

• Supports USB 2.0 high-speed data transmission up to 480 Mbps
• Compact 10-QFN package design for space-constrained applications
• Low on-state resistance for efficient signal conduction
• Wide operating temperature range for industrial environments

Analog Switches - Special Purpose Applications

• USB hub implementations requiring channel expansion
• Portable electronics needing compact switching solutions
• Industrial control systems utilizing USB connectivity

Analog Switches - Special Purpose Procurement Notes

Verify the specific ordering suffix to confirm packaging type, such as Tape & Reel (TR), as indicated in distributor listings. Ensure compatibility with the required voltage levels and thermal management strategies for the target application environment. Confirm RoHS compliance status if environmental regulations apply to the final product assembly.

Analog Switches - Special Purpose Selection Notes

Select this component when a low-profile USB switch with dual-channel capability is required. Consider the 1.65V to 4.5V supply range for compatibility with various logic families. Evaluate the 10-QFN footprint against available PCB real estate. Verify that the 8 Ohm on-resistance meets the signal integrity requirements of the connected USB peripherals.

Analog Switches - Special Purpose Part Context

The ET7228 belongs to the category of analog switches specifically designed for USB interfaces. It serves as a specialized interface IC within the broader family of ETEK MICROELECTRONICS products. The device addresses the need for reliable data routing in USB 2.0 compliant systems while maintaining a small physical footprint.

Analog Switches - Special Purpose Replacement Considerations

Consult official manufacturer documentation for direct pin-to-pin replacements. Cross-reference with other USB switch ICs offering similar channel counts and package dimensions. Verify electrical parameter equivalence before substitution.