MAXIM MAX4641 MAX4642 MAX4643 High-Speed Dual SPST CMOS Analog Switches Datasheet
Summary
Discover high-performance, low-voltage dual analog switches built for efficient signal routing in microelectronics. These CMOS SPST devices operate from +1.8V to +5.5V, offering ultra-low on-resistance and minimal quiescent power consumption. The accompanying manual provides comprehensive details—including electrical characteristics, package diagrams, and application guidelines—for integrating these switches into complex systems such as audio routing, data acquisition, and battery-operated equipment. Perfect for engineers requiring reliable, high-speed switching solutions in limited space designs.
Page 1 Text Content
19-1656; Rev 1; 2/02
High-Speed, Low-Voltage, 4Ω, Dual SPST
CMOS Analog Switches
General Description Features
The MAX4641/MAX4642/MAX4643 are monolithic, dual, +1.8V to +5.5V Single-Supply Operation single-pole/single-throw (SPST) switches that can operate Rail-to-Rail™ Analog Signal Range from a single supply ranging from +1.8V to +5.5V. The Guaranteed RON
MAX4641/MAX4642/MAX4643 provide low 4Ω on-resis- 4Ω max (+5V supply)
tance (RON), 0.6Ω RON matching between channels, and 8Ω max (+3V supply)
1Ω RON flatness over the entire analog signal range. +1.8V Operation These devices offer fast switching times of less than 20ns RON 30Ω typ Over Temperature while consuming less than 0.01µW of quiescent power. t ON 18ns typ, t OFF 12ns typ
Guaranteed RON Flatness: 1Ω (+5V supply)
The MAX4641 has two normally open (NO) switches,
Guaranteed RON Match Between Channels
and the MAX4642 has two normally closed (NC)
0.6Ω (+5V supply)
switches. The MAX4643 has one NO switch and one NC
Low Leakage (<0.35n A) Over Entire Temperature
switch. All three devices have low 0.35n A leakage cur-
Range
rents over the entire temperature range. The MAX4641/
Excellent AC Characteristics
MAX4642/MAX4643 are available in small 8-pin µMAX
Low Crosstalk: -97d B at 1MHz
and 8-pin QFN packages.
High Off-Isolation: -80d B at 1MHz 0.018% Total Harmonic Distortion
Applications
Low Power Consumption: < 0.01µW
Battery-Operated Equipment
Ordering Information
Audio and Video Signal Routing
PART PIN-PACKAGETEMP RANGE
Low-Voltage Data-Acquisition Systems
8 µMAX-40°C to +85°CMAX4641EUA
Sample-and-Hold Circuits
8 QFN 3 x 3-40°C to +85°CMAX4641EGA
Communications Circuits
8 µMAX-40°C to +85°CMAX4642EUA 8 QFN 3 x 3-40°C to +85°CMAX4642EGA
-40°C to +85°CMAX4643EUA 8 µMAX
8 QFN 3 x 3-40°C to +85°CMAX4643EGA
Rail-to-Rail is a trademark of Nippon Motorola, Ltd.
Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
MAX4641 MAX4642 MAX4643
NO1 V+ NC1 V+ NO1 V+
IN1COM1 IN1COM1 IN1COM1
COM2IN2 COM2IN2 COM2IN2
NO2GND NC2GND NC2GND
µMAXµMAXµMAX
MAX4641 MAX4642 MAX4643
IN_ NO_ IN_ NC_ IN_ NO1 NC2
OFF ON OFF ON
ON OFF ON OFF
Pin Configurations continued at end of data sheet.
Maxim Integrated Products
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.
Page Summary Contents For MAXIM MAX4641 MAX4642 MAX4643 High-Speed Dual SPST CMOS Analog Switches Datasheet
Manual Details
| Brand | Dual |
|---|---|
| Pages | 10 |
| File Size | 198.10 KB |
| Published | June 06, 2026 |
Enter the captcha to get the download link:
Frequently Asked Questions
What voltage range can these switches operate on using a single supply?
They support single-supply operation ranging from +1.8V to +5.5V.
How do the MAX464x devices differ regarding switch configuration?
The 4641 has two NO switches; the 4642 has two NC switches; and the 4643 combines one of each.
What is the typical leakage current at temperature extremes?
All devices maintain low leakage currents, specified at less than 0.35nA over the entire temperature range.
Is these devices suitable for battery-operated equipment?
Yes, they feature low power consumption of less than 0.01µW.