ISL76120 Datasheet, PDF (1/13 Pages) Intersil Corporation – Automotive Grade USB 2.0 High/Full Speed Multiplexer

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Data Sheet
May 29, 2008
ISL76120
FN6711.1
Automotive Grade USB 2.0 High/Full
Speed Multiplexer
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.
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.
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.
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.
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.
Application Block Diagram
Features
• High Speed (480Mbps) and Full Speed (12Mbps)
Signaling Capability per USB 2.0
• 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
• Crosstalk @ 1MHz. . . . . . . . . . . . . . . . . . . . . . . . . . -70dB
• Off-Isolation @ 100kHz . . . . . . . . . . . . . . . . . . . . . . -98dB
• Single Supply Operation (V_DD) . . . . . . . . . . . . 2.7V to 5.5V
• Available in TDFN Package
• Robust ESD rating > 8.5kV HBM
• Ultra-Low Operating Current - 60nA
• -40°C to 105°C Operation
• AECQ100 Qualified Component
• Pb-Free (RoHS Compliant)
Applications
• Automotive
- USB Docks
- MP3 and PMP Player Attach Kits
- Infotainment Systems
• After Market Automotive Options
VBUS
D-
D+
GND
3.3V
V_DD
ISL76120
IN
LOGIC CIRCUITRY
COMD1
EN
4MW
HSD1
HSD2
COMD2
GND
FSD1
FSD2
µCONTROLLER
USB
HIGH-SPEED
TRANSCEIVER
USB
FULL-SPEED
TRANSCEIVER
PORTABLE MEDIA DEVICE
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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