ISL54233 Datasheet, PDF (1/18 Pages) Intersil Corporation – Wideband Differential 3:1 Multiplexer

Wideband Differential 3:1 Multiplexer
ISL54233
The Intersil ISL54233 is a single supply differential 3 to 1
multiplexer that operates from a single supply in the range of
2.7V to 4.6V. It was designed to multiplex between three
different differential data sources, allowing the multiplexing of
USB 2.0 high speed data signals, UART data signals and digital
video through a common headphone connector in Personal
Media Players and other portable battery powered devices.
The switch channels have low ON capacitance and high
bandwidth (1.6GHz) to pass USB high speed signals (480Mbps)
and digital video signals with minimal edge and phase distortion
and can swing rail-to-rail to pass UART and full-speed USB
signals.
All channels of the multiplexer can be turned OFF (disabled) by
driving the C0 and C1 logic pins to the low state.
The ISL54233 is available in a tiny 12 Ld 2.2mmx1.4mm
ultra-thin QFN and 12 Ld 3mmx3mm TQFN package. It operates
over a temperature range of -40°C to +85°C.
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
Features
• High Speed (480Mbps) and Full Speed (12Mbps) Signaling
Capability per USB 2.0 on All Ports
• Digital Video Transmission
• COM Pins Allow Negative Swings to -2V
• All Switches OFF Mode
• Power OFF Protection
• COM Pins Overvoltage Tolerant to 5.5V
• Low ON Capacitance @ 240MHz . . . . . . . . . . . . . . . . . . 2.8pF
• -3dB Frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6GHz
• Single Supply Operation (V_DD) . . . . . . . . . . . . . . . . 2.7V to 4.6V
• Available 12 Ld UTQFN and 12 Ld TQFN Packages
• Compliant with USB 2.0 Short Circuit Requirements Without
Additional External Components
• Pb-Free (RoHS Compliant)
Applications
• MP4 and Other Personal Media Players
• Mobile Phone/Smart Phone
• Tablets, Readers, GPS and MHL
3.3V
µCONTROLLER ^VBUS
USB
TRANSCEIVER
DIGITAL
VIDEO
UART
VDD
3D-
3D+
C0
C1
LOGIC
4MΩ
2D-
2D+
1D-
1D+
GND
COM -
COM +
ISL54233
FIGURE 1. TYPICAL APPLICATION
1
0
-1
-2
-3
-4
R_L = 50Ω
V_IN = 0dBm, 0.86VDC BIAS
1M
10M
100M
1G 2G
FREQUENCY (Hz)
FIGURE 2. BANDWIDTH CHARACTERISTICS CURVE
December 21, 2011
1
FN7918.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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