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General Description
The MAX4721/MAX4722/MAX4723 low-voltage, low on-
resistance (RON), dual single-pole/single throw (SPST)
analog switches operate from a single +1.8V to +5.5V
supply. These devices are designed for USB 1.1 and
audio switching applications.
The MAX4721/MAX4722/MAX4723 feature 4.5
RON
(max) with 1.2
flatness and 0.3 matching between
channels. These new switches feature guaranteed
operation from +1.8V to +5.5V and are fully specified at
3V and 5V. These switches offer break-before-make
switching (1ns) with tON <80ns and tOFF <40ns at
+2.7V. The digital logic inputs are +1.8V logic compati-
ble with a +2.7V to +3.6V supply.
These switches are packaged in a chip-scale package
(UCSP), significantly reducing the required PC board
area. The chip occupies only a 1.52mm 1.52mm area
and has a 3 3 bump array with a bump pitch of
0.5mm. These switches are also available in an 8-pin
MAX package.
Applications
Battery-Operated Equipment
Audio/Video-Signal Routing
Low-Voltage Data-Acquisition Systems
Sample-and-Hold Circuits
Communications Circuits
Features
o USB 1.1 Signal Switching
o <2ns Differential Skew
o -3dB Bandwidth: >300MHz
o Low 15pF On-Channel Capacitance
o Low RON (max) Switches
4.5
(max) (+3V Supply)
3
(max) (+5V Supply)
o 0.3 (max) RON Match (+3V Supply)
o 1.2 (max) RON Flatness (+3V Supply)
o <0.5nA Leakage Current at TA = +25°C
o High Off-Isolation: -55dB (10MHz)
o Low Crosstalk: -80dB (10MHz)
o Low Distortion: 0.03%
o +1.8V CMOS-Logic Compatible
o Single-Supply Operation from +1.8V to +5.5V
o Rail-to-Rail Signal Handling
MAX4721/MAX4722/MAX4723
4.5
Dual SPST Analog Switches in UCSP
________________________________________________________________ Maxim Integrated Products
1
Ordering Information
19-2632; Rev 0; 10/02
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.
PART
TEMP RANGE
PIN/BUMP-
PACKAGE
TOP
MARK
MAX4721EUA
-40°C to +85°C
8 MAX
—
MAX4721EBL-T*
-40°C to +85°C
9 UCSP-9
ABP
MAX4722EUA
-40°C to +85°C
8 MAX
—
MAX4722EBL-T*
-40°C to +85°C
9 UCSP-9
ABQ
MAX4723EUA
-40°C to +85°C
8 MAX
—
MAX4723EBL-T*
-40°C to +85°C
9 UCSP-9
ABR
MAX4721
UCSP
TOP VIEW
(BUMP SIDE DOWN)
IN_
LOW
HIGH
NO_
OFF
ON
NC_
ON
OFF
C
B
A
123
IN2
COM1
NO1
GND
V+
NO2
COM2
IN1
MAX4722
C
B
A
123
IN2
COM1
NC1
GND
V+
NC2
COM2
IN1
MAX4723
C
B
A
123
IN2
COM1
NO1
GND
V+
NC2
COM2
IN1
UCSP
Pin Configurations/Functional Diagrams/Truth Tables
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
UCSP is a trademark of Maxim Integrated Products, Inc.
Note: UCSP package requires special solder temperature pro-
file described in the Absolute Maximum Ratings section.
*UCSP reliability is integrally linked to the user’s assembly meth-
ods, circuit board material, and environment. See the UCSP reli-
ability notice in the UCSP Reliability section of this data sheet for
more information.