19-1984; Rev 1; 10/01
High-Current, 10Ω, SPST, CMOS
Analog Switches
General Description
Features
Maxim’s MAX4655–MAX4658 are medium-voltage
CMOS analog switches with low on-resistance of 10Ω
max, specifically designed to handle large switch cur-
rents. With a switch capability of up to 400mA peak cur-
rent and 300mA continuous current (MAX4655/
MAX4656), and up to 300mA peak current and 150mA
continuous current (MAX4657/MAX4658), these parts
can switch loads as low as 25Ω. They can replace reed
relays with a million times the speed and virtually unlim-
ited number of lifetime cycles. Normal power consump-
tion is only 3mW, whether the switch is on or off. These
parts are TTL/CMOS compatible and will switch any
voltage within its power-supply range.
ꢀ High Continuous Current Handling
300mA (MAX4655/MAX4656)
150mA (MAX4657/MAX4658)
ꢀ High Peak Current Handling
400mA (MAX4655/MAX4656)
300mA (MAX4657/MAX4658)
ꢀ 10Ω max On-Resistance ( 15ꢀ suꢁꢁlies)
ꢀ ꢀ not Required
L
ꢀ 1Ω max R
Flatness over Sꢁecified Signal
ON
Range
ꢀ Rail-to-Rail Signal Handling
These are SPST (single-pole/single-throw) switches.
The MAX4655/MAX4657 are normally closed (NC),
while the MAX4656/MAX4658 are normally open (NO).
The difference between the MAX4655/MAX4656 and
the MAX4657/MAX4658 is in the power dissipation of
their packages. Refer to the Absolute Maximum Ratings
and the Electrical Characteristics.
ꢀ +12ꢀ Single Suꢁꢁly or 15ꢀ ꢂual Suꢁꢁly
Oꢁeration
ꢀ Pin Comꢁatible with ꢂG417, ꢂG418
Ordering Information
PART
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
8 QFN
8 µMAX-EP*
8 SO-EP*
8 QFN
8 µMAX-EP*
8 SO-EP*
8 QFN
8 µMAX
8 SO
MAX4655EGA
MAX4655EUA
MAX4655ESA
MAX4656EGA
MAX4656EUA
MAX4656ESA
MAX4657EGA
MAX4657EUA
MAX4657ESA
MAX4658EGA
MAX4658EUA
MAX4658ESA
The MAX4655–MAX4658 power-supply range is from
4.5ꢀ to 20ꢀ for dual supply operation and ꢁꢂꢀ to
ꢁ40ꢀ for single supply operation. These switches can
operate from any combination of supplies, within a 40ꢀ
ꢀꢁ to ꢀ- range. They conduct equally well in either direc-
tion and can handle Rail-to-Rail® analog signals. The off-
leakage current is only 1nA max at T = ꢁ25°C. They are
A
available in 8-pin µMAX, QFN, and SO packages, with
exposed pad options for high-power applications.
8 QFN
8 µMAX
8 SO
Applications
Relay Replacement
Test Equipment
*EP = exposed pad
Pin Configurations/
Functional Diagrams/Truth Tables
Communication Systems
xDSL Modems
TOP VIEW
PBX, PABX Systems
Audio Signal Routing
Audio Systems
1
2
3
8
7
6
5
1
2
3
4
8
7
6
5
COM
N.C.
GND
V+
COM
N.C.
GND
V+
NC
V-
NO
V-
IN
PC Multimedia Boards
Redundant/Backup Systems
IN
4
N.C.
N.C.
MAX4655/MAX4657
µMAX/SO/QFN
MAX4655/MAX4657
MAX4656/MAX4658
µMAX/SO/QFN
MAX4656/MAX4658
LOGIC
SWITCH
LOGIC
SWITCH
0
1
ON
OFF
0
1
OFF
ON
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
N.C. = NO CONNECT
NC = NORMALLY CLOSED
SWITCHES SHOWN FOR LOGIC "0" INPUT
________________________________________________________________ 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.