ISL76120
®
Data Sheet
May 29, 2008
FN6711.1
Automotive Grade USB 2.0 High/Full
Speed Multiplexer
Features
• High Speed (480Mbps) and Full Speed (12Mbps)
Signaling Capability per USB 2.0
The Intersil ISL76120 dual 2:1 multiplexer IC is a single
supply part that can operate from a single 2.7V to 5.5V supply.
It contains two SPDT (Single Pole/Double Throw) switches
configured as a DPDT. The part was designed for switching
between USB High-Speed and USB Full-Speed sources in
portable battery powered products.
• 1.8V Logic Compatible (2.7V to +3.6V supply)
• Enable Pin to Open all Switches, Simplifies Multiple USB
Client Management
• -3dB Frequency
- HSx Switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 880MHz
- FSx Switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 550MHz
The normally-closed (NC) FSx switches can swing rail-to-rail
and were specifically designed to pass USB full speed data
signals (12Mbps) that range from 0V to 3.6V. The normally-
open (NO) HSx switches have high bandwidth and low
capacitance and were specifically designed to pass USB high
speed data signals (480Mbps) with minimal distortion.
• Crosstalk @ 1MHz. . . . . . . . . . . . . . . . . . . . . . . . . . -70dB
• Off-Isolation @ 100kHz . . . . . . . . . . . . . . . . . . . . . . -98dB
• Single Supply Operation (V ) . . . . . . . . . . . . 2.7V to 5.5V
DD
• Available in TDFN Package
• Robust ESD rating > 8.5kV HBM
• Ultra-Low Operating Current - 60nA
• -40°C to 105°C Operation
The part can be used in a variety of automotive entertainment
and infotainment applications where consumer USB devices
such as Portable Media Players (PMPs) are to be connected
to embedded systems. The product allows switching between
a high-speed transceiver and a full-speed transceiver while
connected to a single USB host. Additionally the part can be
used for charge control of PMPs.
• AECQ100 Qualified Component
• Pb-Free (RoHS Compliant)
The digital logic inputs are 1.8V logic compatible when
operated with a 2.7V to 3.6V supply. The part has an enable
pin to open all switches. It can be used to facilitate proper bus
disconnect and connection when switching between the USB
sources.
Applications
• Automotive
- USB Docks
- MP3 and PMP Player Attach Kits
- Infotainment Systems
The ISL76120 is available in a 10 Ld 3mm x 3mm TDFN
package. It operates over a temperature range of -40°C to
+105°C.
• After Market Automotive Options
Application Block Diagram
3.3V
µCONTROLLER
V
DD
ISL76120
EN
IN
LOGIC CIRCUITRY
VBUS
D-
USB
HIGH-SPEED
TRANSCEIVER
4MW
HSD1
HSD2
COMD1
USB
FULL-SPEED
TRANSCEIVER
D+
FSD1
FSD2
COMD2
GND
GND
PORTABLE MEDIA DEVICE
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2008. All Rights Reserved
1
All other trademarks mentioned are the property of their respective owners.