ISL54224中文资料High-Speed USB 2.0 (480Mbps) Multiplexer with Overvoltage Protection (OVP) and Overvoltage Indicator Output数据手册Renesas规格书

描述 Description

The ISL54224 is a single supply dual 2:1 multiplexer that can operate from a single 2.7V to 5.25V supply. It contains two Single Pole/Double Throw (SPDT) switches configured as a DPDT. The part was designed for switching of USB data signals in portable battery-powered products. The 6.5Ω switches were specifically designed to pass USB High-Speed/Full-Speed data signals. They have high bandwidth and low capacitance to pass USB High-Speed data signals with minimal distortion. The ISL54224 has overvoltage protection (OVP) circuitry on the D-/D+ com pins that opens the USB in-line switches when the voltage at these pins exceeds 3.8V (typ.) or goes negative by -0.5V (typ.). It isolates fault voltages up to +5.25V or down to -5V from getting passed to the other side of the switch, thereby protecting the USB transceivers. The digital logic inputs are 1.8V logic compatible when operated with a 2.7V to 3.6V supply. The ISL54224 has an open drain OE/ALM pin that can be driven Low to open all switches and outputs a Low when the OVP circuitry is activated. It can be used to facilitate proper bus disconnect and connection when switching between the USB sources. The ISL54224 is available in 10 Ld 1.8mm x 14mm µTQFN and 10 Ld TDFN packages. It operates over a temperature range of -40 °C to +85 °C.

特性 Features

• High-speed (480Mbps) and full-speed (12Mbps) signaling capability per USB 2.0
• OE/ALM pin to open all switches and indicate overvoltage fault condition
• D-/D+ pins overvoltage protection for +5.25V and -5V fault voltages
• Low ON capacitance at 240MHz: 3.3pF
• Single supply operation (VDD): 2.7V to 5.25V
• Pb-free (RoHS compliant)
• Compliant with USB 2.0 short circuit and overvoltage requirements without additional external components

应用 Application

• MP3 and other personal media players
• PDAs
• USB switching