MAX4850 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – Dual SPDT Analog Switches with Over-Rail Signal Handling

19-3375; Rev 0; 7/04
Dual SPDT Analog Switches with
Over-Rail Signal Handling
General Description
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.
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.
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.
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.
Applications
USB Switching
Audio-Signal Routing
Cellular Phones
Notebook Computers
PDAs and Other Handheld Devices
Features
o USB 2.0 Full Speed (12MB) and USB 1.1 Signal
Switching Compliant
o Switch Signals Greater than V_CC
o 0.1ns Differential Skew
o 3.5Ω/7Ω On-Resistance
o 135MHz -3dB Bandwidth
o +2V to +5.5V Supply Range
o 1.8V Logic Compatible
o Low Supply Current
1µA (MAX4852)
5µA (MAX4850)
10µA (MAX4850H/MAX4852H)
o Available in a Space-Saving (3mm x 3mm),
16-Pin TQFN Package
Ordering Information
PART
TEMP RANGE
MAX4850ETE -40°C to +85°C
MAX4850HETE -40°C to +85°C
MAX4852ETE -40°C to +85°C
MAX4852HETE -40°C to +85°C
*EP = Exposed paddle.
PIN-PACKAGE
16 TQFN-EP*
16 TQFN-EP*
16 TQFN-EP*
16 TQFN-EP*
TOP
MARK
ABU
ABV
ABZ
ACA
Pin Configurations and Selector Guide appear at end of
data sheet.
Block Diagrams/Truth Table
NC1
NO1
NC2
NO2
COUT1
COUT2
MAX4850
MAX4850H
3.5Ω
COM1
IN1
IN2
3.5Ω
COM2
VCC
3
CIN1
VCC
3
CIN2
MAX4852
MAX4852H
NC1
3.5Ω
COM1
NO1
7Ω
IN1
NC2
3.5Ω
IN2
COM2
NO2
7Ω
MAX4850_
MAX4852_
IN_ NO_ NC_
0 OFF ON
1 ON OFF
SWITCHES SHOWN FOR
LOGIC 0 INPUT
________________________________________________________________ Maxim Integrated Products 1
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