MAX14509AEEVB+

Analog Switches - Special Purpose Overview

The MAX14509AEEVB+ is a high-ESD-protected single DPDT switch designed to multiplex Hi-Speed (480Mbps) USB and analog signals. It operates from a +2.7V to +5.0V supply with a typical quiescent current of 12μA. The device features a -3dB bandwidth of 950MHz, a typical on-resistance of 2.4Ω, and an off-isolation of -65dB at 100kHz. It includes an enable input for shutdown mode and provides fault protection on COM terminals against shorts to +5.5V. Packaged in a 10-pin UTQFN, it supports audio signals down to VCC - 5.0V.

Analog Switches - Special Purpose Feature Summary

• Supports multiplexing of Hi-Speed USB and AC-coupled analog signals such as audio or video
• Includes internal negative supply capability to pass audio signals that swing below ground
• Features overvoltage fault protection on common terminals to safeguard downstream circuits
• Provides an enable input to reduce supply current and place channels in high impedance

Analog Switches - Special Purpose Applications

• Cell Phones
• MP3 Players
• Notebook Computers
• PDAs

Analog Switches - Special Purpose Procurement Notes

Verify the component marking 'AAL' on the top surface to confirm the specific MAX14509A variant. Ensure the package matches the 10-pin Ultra-Thin QFN footprint. Confirm RoHS compliance status via the datasheet documentation before finalizing procurement specifications.

Analog Switches - Special Purpose Selection Notes

Select this part when USB and audio signal switching is required without automatic VBUS detection. Unlike the MAX14510E, this model lacks a VBUS detection pin, requiring external logic control via the CB and EN pins. It is suitable for designs where manual or system-controlled path selection is preferred over automatic connection.

Analog Switches - Special Purpose Part Context

This component belongs to the MAX14508E–MAX14511E family of USB 2.0 Hi-Speed and Audio Switches. It shares the same core architecture and package as other variants but differs in control inputs. Specifically, it omits the VBUS detection feature found in the MAX14510E/MAX14511E models while retaining the enable functionality.

Analog Switches - Special Purpose Replacement Considerations

The MAX14508EEVB+ serves as a parametrically similar alternative within the same family. It offers identical electrical characteristics but includes internal shunt resistors for click-and-pop reduction, which are absent in the MAX14509AEEVB+. Verify if this additional feature impacts the target application design.