Features: ` +1.8V to +5V Single-Supply Operation
` Guaranteed RON
2.5 max (5V supply)
3.5 max (3V supply)
` 1.8V Operation
RON 30 typ Over Temperature
tON 40ns typ, tOFF 20ns typ
` Low RON Flatness: 0.4 max
` Guaranteed Low Leakage Currents
±0.25nA at +25°C
` Rail-to-Rail Output Capability
` TTL/CMOS-Logic Compatible
` -75dB Off-Isolation at 1MHz
` Low Distortion: 0.014% typApplication·Battery-Powered Systems
·Audio and Video Signal Routing
·Low-Voltage Data-Acquisition Systems
·Sample-and-Hold Circuits
·Communications Circuits
·Relay ReplacementPinout
SpecificationsV+, VIN to GND....................................................-0.3 to +6V
COM, NO, NC to GND (Note 1).................-0.3V to (V+ + 0.3V)
Continuous Current (any terminal).............................±50mA
Peak Current COM, NO, NC
(pulsed at 1ms 10% duty cycle)................................±100mA
Continuous Power Dissipation (TA = +70°C)
5-Pin SOT23 (derate 7.1mW/°C above+70°C)............571mW
6-Pin SOT23 (derate 8.7mW/°C above +70°C)...........696mW
8-Pin MAX (derate 4.1mW/°C above+70°C) .............330mW
Operating Temperature Range ......................-40°C to +85°C
Storage Temperature Range ........................-65°C to +150°C
Lead Temperature (soldering, 10s) ............................+300°C
Note 1: Signals on NO, NC, or COM, exceeding V+ or GND are clamped by internal diodes. Limit forward current to maximum current rating.
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
DescriptionThe MAX4645/MAX4646 single-pole, single-throw (SPST) analog switches feature a 2.5 typical on-resistance (RON) from a +5V supply. RON is flat (0.4 max) over the specified signal range. Each switch can handle Rail-to- Rail® analog signals. Off-leakage current is 0.25nA max at +25°C. These analog switches are ideal in low-distortion applications and are the preferred solution over mechanical relays in automated test equipment or applications where current switching is required. They have low power requirements, require less board space, and are more reliable than mechanical relays.
These switches operate from a +1.8V to +5V single supply, making them ideal for use in battery-powered applications. The MAX4645/MAX4646 have fast switching speeds of 12ns turn-on time (tON) and 8ns turn-off time (tOFF).
The MAX4645 is a normally open (NO) switch, and the MAX4646 is a normally closed (NC) switch. Both are available in 5-pin SOT23, 6-pin SOT23, and 8-pin MAX packages.
MAX4645 Data Sheet
