19-1657; Rev 1; 1/11
High-Speed, Low-Voltage, 4Ω,
SPDT CMOS Analog Switch
MAX64
General Description
Features
The MAX4644 is a single-pole/double-throw (SPDT)
switch that operates from a single supply ranging from
♦ +1.8V to +5.5V Single-Supply Operation
♦ Rail-to-Rail Analog-Signal Range
+1.8V to +5.5V. It provides low 4Ω on-resistance (R
)
ON
♦ Guaranteed R
ON
as well as 1Ω R
flatness over the entire analog-signal
ON
4Ω max (+5V Supply)
8Ω max (+3V Supply)
range. The MAX4644 offers fast switching times of less
than 20ns while ensuring break-before-make operation.
It typically consumes only 0.01μW of quiescent power,
making it suitable for use in low-power, portable appli-
cations.
♦ +1.8V Operation
R
ON
30Ω (typ) Over Temperature
ON
t
18ns (typ), t
12ns typ
OFF
♦ Guaranteed R
Flatness: 0.75Ω (typ) (+5V Supply)
Match Between Channels:
The MAX4644’s features include low leakage currents
over the entire temperature range, TTL/CMOS-compati-
ble digital logic, and excellent AC characteristics. It is
ON
♦ Guaranteed R
ON
0.1Ω typ (+5V Supply)
®
packaged in either a small 8-pin μMAX or a tiny 6-pin
♦ Low Leakage (< 0.35nA) Over Entire Temperature
SOT23.
Range
♦ Excellent AC Characteristics
Low Crosstalk: -82dB at 1MHz
Applications
Battery-Operated Equipment
Audio and Video Signal Routing
Low-Voltage Data-Acquisition Systems
Sample-and-Hold Circuits
High Off-Isolation: -80dB at 1MHz
0.018% Total Harmonic Distortion
♦ Low Power Consumption: < 0.01µW
Ordering Information
Communications Circuits
PIN-
TOP
PART
TEMP. RANGE
PACKAGE MARK
MAX4644EUT+T
MAX4644EUA+T
-40°C to +85°C
-40°C to +85°C
6 SOT23
8 μMAX
AAHQ
—
ËMAX is a registered trademark of Maxim Integrated
Products, Inc.
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
Pin Configurations/Functional Diagrams/Truth Table
TOP VIEW
MAX4644
MAX4644
1
2
3
6
1
2
3
4
8
NO
NO
IN
V+
COM
NC
COM
NC
N.C.
IN
5
4
7
6
GND
GND
V+
5
N.C.
SOT23-6
μMAX
MAX4644
IN
0
NC
ON
NO
OFF
ON
1
OFF
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.