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19-1984; Rev 2; 2/04
High-Current, 10Ω, SPST, CMOS Analog Switches
General Description
Maxim’s MAX4655–MAX4658 are medium-voltage CMOS analog switches with low on-resistance of 10Ω max, specifically designed to handle large switch currents. With a switch capability of up to 400mA peak current 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 unlimited number of lifetime cycles. Normal power consumption 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. 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. The MAX4655–MAX4658 power-supply range is from ±4.5V to ±20V for dual-supply operation and +9V to +40V for single-supply operation. These switches can operate from any combination of supplies, within a 40V V+ to V- range. They conduct equally well in either direction and can handle Rail-to-Rail® analog signals. The offleakage current is only 1nA max at TA = +25°C. They are available in 8-pin µMAX, TDFN, and SO packages, with exposed pad options for high-power applications.
Features
♦ High Continuous Current Handling 300mA (MAX4655/MAX4656) 150mA (MAX4657/MAX4658) ♦ High Peak Current Handling 400mA (MAX4655/MAX4656) 300mA (MAX4657/MAX4658) ♦ 10Ω max On-Resistance (±15V supplies) ♦ VL not Required ♦ 1Ω max RON Flatness over Specified Signal Range ♦ Rail-to-Rail Signal Handling ♦ +12V Single Supply or ±15V Dual Supply Operation ♦ Pin Compatible with DG417, DG418
MAX4655–MAX4658
Ordering Information
PART MAX4655ETA MAX4655EUA MAX4655ESA MAX4656ETA MAX4656EUA MAX4656ESA MAX4657EUA MAX4657ESA MAX4658EUA MAX4658ESA 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 PIN-PACKAGE 8 TDFN 8 µMAX-EP* 8 SO-EP* 8 TDFN 8 µMAX-EP* 8 SO-EP* 8 µMAX 8 SO 8 µMAX 8 SO TOP MARK AKT AAAL — AKU AAAM — — — — —
Applications
Relay Replacement Test Equipment Communication Systems xDSL Modems PBX, PABX Systems Audio Signal Routing Audio Systems PC Multimedia Boards Redundant/Backup Systems
*EP = Exposed paddle.
Pin Configurations/ Functional Diagrams/Truth Tables
TOP VIEW
COM N.C.
1 2
8 7 6 MAX4655/MAX4657 5
NC VIN N.C.
COM N.C.
1 2
8 7 6 MAX4656/MAX4658 5
NO VIN N.C.
GND 3 V+ 4
GND 3 V+ 4
µ MAX/SO/TDFN
MAX4655/MAX4657 LOGIC SWITCH 0 1 ON OFF
µ MAX/SO/TDFN
MAX4656/MAX4658 LOGIC SWITCH 0 1 N.C. = NO CONNECT NC = NORMALLY CLOSED OFF ON
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
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.
High-Current, 10Ω, SPST, CMOS Analog Switches MAX4655–MAX4658
ABSOLUTE MAXIMUM RATINGS
V+ to GND ..............................................................-0.3V to +44V V- to GND ...............................................................-44V to +0.3V V+ to V-...................................................................-0.3V to +44V All Other Pins to GND (Note 1)..................V- - 0.3V to V+ + 0.3V Continuous Current, COM, NO, NC (MAX4655/MAX4656) ..................................................±300mA Continuous Current, COM, NO, NC (MAX4657/MAX4658) ..................................................±150mA Continuous Current, IN .....................................................±30mA Peak Current, COM, NO, NC (pulsed at 1ms, 10% duty cycle) MAX4655/MAX4656....................................................±400mA (pulsed at 1ms, 10% duty cycle) MAX4657/MAX4658....................................................±300mA Continuous Power Dissipation (TA = +70°C) 8-Pin TDFN (derate 24.4mW/°C above +70°C) ........1951mW 8-Pin µMAX-EP (derate 10.3mW/°C above +70°C) MAX4655/MAX4656 ....................................................825mW 8-Pin µMAX (derate 4.50mW/°C above +70°C) MAX4657/MAX4658 ....................................................362mW 8-Pin SO-EP (derate 18.9mW/°C above +70°C) MAX4655/MAX4656 ..................................................1509mW 8-Pin SO (derate 5.88mW/°C above +70°C) MAX4657/MAX4658 ....................................................471mW Operating Temperature Ranges MAX4655–MAX4658 .......................................-40°C to +85°C Junction Temperature .......................................................