19-1709; Rev 2; 5/03
Fast, Low-Voltage, Dual 4Ω SPDT
CMOS Analog Switches
General Description
The MAX4635/MAX4636 are fast, dual 4Ω single-
pole/double-throw (SPDT) analog switches that operate
with supply voltages from +1.8V to +5.5V. High switch-
ing speeds, 1Ω on-resistance flatness, and low power
consumption make these devices ideal for audio/video,
communications, and battery-operated devices.
Containing two independently controllable SPDT
switches in 10-pin µMAX and 10-pin 3mm x 3mm thin
QFN packages, the MAX4635/MAX4636 use little board
space, and have low power consumption ensuring min-
imal impact on your power budget. The analog signal
range extends to the supply rails. The MAX4635 has
inverted logic compared to the MAX4636.
Features
o
Guaranteed On-Resistance
4Ω (max) +5V Supply
5.5Ω (max) +3V Supply
o
Guaranteed Match Between Channels
0.2Ω (max)
o
Guaranteed Flatness Over Signal Range
1Ω (max) with +5V Supply
o
Fast Switching Speeds
14ns (max) Turn-On Time
6ns (max) Turn-Off Time
o
1.8V Operation
100Ω (typ) On-Resistance Over Temperature
56ns (typ) Turn-On Time
17ns (typ) Turn-Off Time
o
+1.8V to +5.5V Single-Supply Operation
o
Rail-to-Rail
®
Signal Handling
o
Low Crosstalk: -67dB at 1MHz
o
High Off-Isolation: -65dB at 1MHz
o
THD: 0.1%
MAX4635/MAX4636
________________________Applications
Battery-Powered Equipment
Relay Replacement
Audio and Video Signal Routing
Low-Voltage Data-Acquisition Systems
Sample-and-Hold Circuits
Communications Circuits
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
PIN-
PACKAGE
10 µMAX
10 Thin
QFN (3
✕
3)
10 µMAX
10 Thin
QFN (3
✕
3)
TOP
MARK
—
AAT
—
AAO
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
MAX4635EUB
MAX4635ETB
MAX4636EUB
MAX4636ETB
Pin Configuration/Functional Diagram/Truth Table
TOP VIEW
IN1 1
NO1 2
GND 3
NO2 4
IN2 5
10 COM1 IN1 1
9 NC1
NC1 2
GND 3
NC2 4
10 COM1 IN1 1
9 NO1
NO1 2
GND 3
NO2 4
10 COM1 IN1 1
9 NC1
NC1 2
GND 3
NC2 4
10 COM1
9 NO1
MAX4635
8 V+
7 NC2
MAX4636
8 V+
7 NO2
MAX4635
8 V+
7 NC2
MAX4636
8 V+
7 NO2
6 COM2
6 COM2 IN2 5
6 COM2 IN2 5
6 COM2 IN2 5
µMAX
µMAX
IN_
0
1
3 x 3 THIN QFN
NO_ TO COM_ NC_ TO COM_
OFF
ON
ON
OFF
3 x 3 THIN QFN
SWITCHES SHOWN FOR "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.
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
