MAXIM MAX4635 MAX4636 Fast Dual 4Ω SPDT CMOS Analog Switches Datasheet
Summary
The MAX4635/MAX4636 are highly efficient, dual 4Ω SPDT CMOS Analog Switches designed for single-supply operation from +1.8V to +5.5V. These switches offer fast switching speeds, low power consumption, and rail-to-rail signal handling while maintaining high channel isolation. This manual provides critical technical documentation, including detailed electrical characteristics, operational thresholds, multiple package options (µMAX/QFN), and recommended application guidance for implementing reliable signal routing in audio/video equipment, communication circuits, and battery-powered data systems.
Page 1 Text Content
19-1709; Rev 2; 5/03
Fast, Low-Voltage, Dual 4Ω SPDT
CMOS Analog Switches
General Description Features
The MAX4635/MAX4636 are fast, dual 4Ω single- Guaranteed On-Resistance pole/double-throw (SPDT) analog switches that operate 4Ω (max) +5V Supply with supply voltages from +1.8V to +5.5V. High switch- 5.5Ω (max) +3V Supply ing speeds, 1Ω on-resistance flatness, and low power
Guaranteed Match Between Channels
consumption make these devices ideal for audio/video,
0.2Ω (max)
communications, and battery-operated devices.
Guaranteed Flatness Over Signal Range
Containing two independently controllable SPDT
1Ω (max) with +5V Supply
switches in 10-pin µMAX and 10-pin 3mm x 3mm thin
Fast Switching Speeds
QFN packages, the MAX4635/MAX4636 use little board
14ns (max) Turn-On Time
space, and have low power consumption ensuring min-
6ns (max) Turn-Off Time
imal impact on your power budget. The analog signal range extends to the supply rails. The MAX4635 has 1.8V Operation inverted logic compared to the MAX4636. 100Ω (typ) On-Resistance Over Temperature
56ns (typ) Turn-On Time
________________________Applications
17ns (typ) Turn-Off Time
Battery-Powered Equipment +1.8V to +5.5V Single-Supply Operation
Relay Replacement Rail-to-Rail® Signal Handling Low Crosstalk: -67d B at 1MHz
Audio and Video Signal Routing
High Off-Isolation: -65d B at 1MHz
Low-Voltage Data-Acquisition Systems
THD: 0.1%
Sample-and-Hold Circuits Communications Circuits
Ordering Information
PART TEMP RANGE
PACKAGE MARK
MAX4635EUB -40°C to +85°C 10 µMAX
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
MAX4635ETB -40°C to +85°C 10 Thin AAT
QFN (3 ✕ 3)
MAX4636EUB -40°C to +85°C 10 µMAX
MAX4636ETB -40°C to +85°C 10 Thin AAO
QFN (3 ✕ 3)
Pin Configuration/Functional Diagram/Truth Table
TOP VIEW
IN1 COM1 IN1 COM1 IN1 COM1 IN1 COM1
NO1 NC1 NC1 NO1 NO1 NC1 NC1 NO1
GND V+ GND V+ GND V+ GND V+
MAX4635 MAX4636 MAX4635 MAX4636
NC2NO2 NO2NC2 NC2NO2 NO2NC2
COM2IN2 COM2IN2 COM2IN2 COM2IN2
µMAX µMAX 3 x 3 THIN QFN 3 x 3 THIN QFN
IN_ NO_ TO COM_ NC_ TO COM_ OFF ON ON OFF
SWITCHES SHOWN FOR "0" INPUT
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 MAX4635 MAX4636 Fast Dual 4Ω SPDT CMOS Analog Switches Datasheet
Manual Details
| Brand | Dual |
|---|---|
| Pages | 11 |
| File Size | 245.31 KB |
| Published | June 06, 2026 |
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Frequently Asked Questions
What is the specified maximum on-resistance for the analog switches?
The guaranteed max on-resistance for both NO and NC contacts is 0.2Ω.
What single supply voltage range can this switch handle?
It supports single-supply operation with voltages ranging from +1.8V to +5.5V.
How do I differentiate between the MAX4635 and MAX4636 models?
The MAX4635 utilizes inverted logic compared to the standard MAX4636.
What is the measured crosstalk performance at 1MHz?
It provides low crosstalk, rated at -67dB at 1MHz.