19-3375; Rev 0; 7/04
Dual SPDT Analog Switches with
Over-Rail Signal Handling
General Description
Features
The MAX4850/MAX4850H/MAX4852/MAX4852H family
of dual SPDT (single-pole/double-throw) switches oper-
ate from a single +2V to +5.5V supply and can handle
signals greater than the supply rail. These switches fea-
ture low 3.5Ω or 3.5Ω/7Ω on-resistance with low on-
capacitance, making them ideal for switching audio
and data signals.
ꢀ USB 2.0 Full Speed (12MB) and USB 1.1 Signal
Switching Compliant
ꢀ Switch Signals Greater than V
ꢀ 0.1ns Differential Skew
ꢀ 3.5Ω/7Ω On-Resistance
ꢀ 135MHz -3dB Bandwidth
ꢀ +2V to +5.5V Supply Range
ꢀ 1.8V Logic Compatible
CC
The MAX4850/MAX4850H are configured with two
SPDT switches and feature two comparators for head-
phone detection or mute/send key functions. The
MAX4852 has two SPDT switches with no comparators
for low 1µA supply current.
ꢀ Low Supply Current
1µA (MAX4852)
5µA (MAX4850)
10µA (MAX4850H/MAX4852H)
ꢀ Available in a Space-Saving (3mm x 3mm),
For over-rail applications, these devices offer either the
pass-through or high-impedance option. For the
MAX4850/MAX4852, the signal (up to 5.5V) passes
through the switch without distortion even when the posi-
tive supply rail is exceeded. For the MAX4850H/
MAX4852H, the switch input becomes high impedance
when the input signal exceeds the supply rail.
16-Pin TQFN Package
The MAX4850/MAX4850H/MAX4852/MAX4852H are
available in the space-saving (3mm x 3mm), 16-pin
TQFN package and operate over the extended temper-
ature range of -40°C to +85°C.
Ordering Information
TOP
PART
TEMP RANGE PIN-PACKAGE
MARK
Applications
MAX4850ETE
-40°C to +85°C 16 TQFN-EP*
ABU
ABV
ABZ
ACA
MAX4850HETE -40°C to +85°C 16 TQFN-EP*
MAX4852ETE -40°C to +85°C 16 TQFN-EP*
USB Switching
Audio-Signal Routing
Cellular Phones
MAX4852HETE -40°C to +85°C 16 TQFN-EP*
*EP = Exposed paddle.
Notebook Computers
PDAs and Other Handheld Devices
Pin Configurations and Selector Guide appear at end of
data sheet.
Block Diagrams/Truth Table
MAX4850_
MAX4852_
MAX4850
MAX4852
MAX4850H
MAX4852H
3.5Ω
NC1
IN_ NO_ NC_
NC1
COM1
0
1
OFF
ON
ON
3.5Ω
COM1
IN1
NO1
OFF
IN1
NO1
NC2
7Ω
SWITCHES SHOWN FOR
LOGIC 0 INPUT
IN2
NC2
IN2
3.5Ω
COM2
3.5Ω
COM2
NO2
V
V
CC
3
NO2
7Ω
COUT1
CIN1
CIN2
CC
3
COUT2
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.