19-1232; Rev 0; 6/97
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
____________________________Features
________________________Applications
o Low 50Ω Insertion Loss: -1dB at 100MHz
o High 50Ω Off Isolation: -80dB at 10MHz
o Low 50Ω Crosstalk: -80dB at 10MHz
o DC to 300MHz -3dB Signal Bandwidth
o 20Ω Signal Paths with ±5V Supplies
o 1Ω Signal-Path Matching with ±5V Supplies
o 0.5Ω Signal-Path Flatness with ±5V Supplies
o ±2.7V to ±6V Dual Supplies
+2.7V to +12V Single Supply
o Low Power Consumption: <1µW
o Rail-to-Rail Bidirectional Signal Handling
o Pin Compatible with Industry-Standard DG540,
DG542, DG643
o >2kV ESD Protection per Method 3015.7
o TTL/CMOS-Compatible Inputs
with Single +5V or ±5V
______________Ordering Information
RF Switching
Video Signal Routing
TEMP. RANGE
PIN-PACKAGE
MAX4545CPP
PART
0°C to +70°C
20 Plastic DIP
MAX4545CWP
High-Speed Data Acquisition
Test Equipment
0°C to +70°C
20 Wide SO
Ordering Information continued at end of data sheet.
ATE Equipment
Networking
_____________________Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
IN1 1
MAX4546
20 IN2
COM1 2
GND1 3
18 GND2
MAX4547
19 COM2
N01 4
17 NO2
V- 5
16 V+
MAX4545
GND5 6
15 GND6
N04 7
14 N03
GND4 8
13 GND3
COM4 9
12 COM3
IN4 10
11 IN3
16 IN2
IN1 1
16 N02
COM1 2
15 COM2
N01 2
15 V+
GND1 3
14 GND2
V- 3
14 GND2
13 NO2
GND1 4
13 COM2
12 V+
COM1 5
12 GND3
GND4 6
11 V-
IN1 1
N01 4
V- 5
NC4 6
11 NC3
GND4 7
10 GND3
V+ 7
COM4 8
9 COM3
NC1 8
10 NC2
9 IN2
DIP/SO/SSOP
SWITCHES SHOWN
FOR LOGIC “0” INPUT
DIP/SO/QSOP
MAX4545
LOGIC
SWITCH
LOGIC
MAX4546
1, 2
3, 4
LOGIC
NO-COM
NC-COM
0
1
OFF
ON
ON
OFF
0
1
OFF
ON
ON
OFF
0
1
OFF
ON
DIP/SO/QSOP
MAX4547
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
MAX4545/MAX4546/MAX4547
_______________General Description
The MAX4545/MAX4546/MAX4547 are low-voltage
T-switches designed for switching RF and video signals
from DC to 300MHz in 50Ω and 75Ω systems. The
MAX4545 contains four normally open single-pole/singlethrow (SPST) switches. The MAX4546 contains two dual
SPST switches (one normally open, one normally closed.)
The MAX4547 contains two single-pole/double-throw
(SPDT) switches.
Each switch is constructed in a “T” configuration, ensuring
excellent high-frequency off isolation and crosstalk of
-80dB at 10MHz. They can handle Rail-to-Rail® analog signals in either direction. On-resistance (20Ω max) is
matched between switches to 1Ω max and is flat (0.5Ω
max) over the specified signal range, using ±5V supplies.
The off leakage current is less than 5nA at +25°C and
50nA at +85°C.
These CMOS switches can operate with dual power supplies ranging from ±2.7V to ±6V or a single supply
between +2.7V and +12V. All digital inputs have 0.8V/2.4V
logic thresholds, ensuring both TTL- and CMOS-logic compatibility when using ±5V or a single +5V supply.