MAX14585 Datasheet, PDF (9/12 Pages) Maxim Integrated Products – Hi-Speed USB and Audio Switches with Negative Signal Capability and High-Voltage-Tolerable

MAX14585/MAX14585A
Hi-Speed USB and Audio Switches with Negative Signal
Capability and High-Voltage-Tolerable V_BUS Detection
Functional Diagrams/Truth Table
UNC1
UNC2
ANO1
ANO2
MAX14585
VCC
VCCINT
COM1
COM2
UNC1
UNC2
ANO1
ANO2
MAX14585A
VCC
VCCINT
COM1
COM2
V_B
VVBDET
V_B
VVBDET
GND
AOR
GND
AOR
VB
> VVBDET
< V_VBDET
X
X = DON’T CARE
MAX14585/MAX14585A
AOR
UNC_
0
ON
0
OFF
1
OFF
ANO_
OFF
ON
ON
MAX14585
ANO_SHUNT
ON
OFF
OFF
Detailed Description
The MAX14585/MAX14585A are high-ESD-protected
single DPDT switches that operate from a 2.7V to 5.5V
supply and are designed to multiplex Hi-Speed USB
signals and AC-coupled analog signals. These switches
combine the low on-capacitance (C_ON) and low on-resis-
tance (R_ON) necessary for high-performance switching
applications. These devices meet the requirements for
USB low-speed and full-speed signaling. The negative
signal capability of the analog channel allows signals
below ground to pass through without distortion.
Analog-Signal Levels
The devices are bidirectional, allowing ANO_, UNC_, and
COM_ to be configured as either inputs or outputs. Note
that UNC_ and ANO_ are only protected against ESD up
to Q2kV (HBM) and could require additional ESD protec-
tion if used as outputs. These devices feature a charge
pump that generates a negative supply to allow analog
signals as low as -1.8V to pass through ANO_ when V_CC
supply is greater than 2.7V. This allows AC-coupled sig-
nals that drop below ground to pass when operating from
a single power supply.
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