General Description
Maxim’s redesigned DG444/DG445 analog switches
now feature on-resistance matching (4
max) between
switches and guaranteed on-resistance flatness over
the signal range (9
max). These low on-resistance
switches conduct equally well in either direction. They
guarantee low charge injection (10pC max), low power
consumption (35μW max), and an electrostatic dis-
charge (ESD) tolerance of 2000V (min) per Method
3015.7. The new design offers lower off-leakage current
over temperature (less than 5nA at +85°C).
The DG444/DG445 are quad, single-pole/single-throw
(SPST) analog switches. The DG444 has four normally
closed switches and the DG445 has four normally open
switches. Switching times are less than 250ns for t
ON
and less than 70ns for t
OFF
. Operation is from a single
+10V to +30V supply, or bipolar ±4.5V to ±20V sup-
plies. Maxim’s improved DG444/DG445 continue to be
fabricated with a 44V silicon-gate process.
________________________Applications
Sample-and-Hold Circuits
Test Equipment
Heads-Up Displays
Guidance and Control Systems
Military Radios
Communication Systems
Battery-Operated Systems
PBX, PABX
Audio Signal Routing
Modems/Faxes
New Features
o
Plug-In Upgrades for Industry-Standard DG444/DG445
o
Improved r
ON
Match Between Channels (4
max)
o
Guaranteed r
FLAT(ON)
Over Signal Range (9
max)
o
Improved Charge Injection (10pC max)
o
Improved Off-Leakage Current Over Temperature
(< 5nA at +85°C)
o
Withstand ESD (2000V min)
per Method 3015.7
Existing Features
o
Low r
DS(ON)
(85
max)
o
Single-Supply Operation +10V to +30V
Bipolar-Supply Operation ±4.5V to ±20V
o
Low Power Consumption (35μW max)
o
Rail-to-Rail
Signal Handling
o
TTL/CMOS-Logic Compatible
______________Ordering Information
D
Improved, Quad, SPST Analog Switches
________________________________________________________________
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.
1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
IN2
D2
S2
V+
V-
S1
D1
IN1
DG445
V
L
S3
D3
IN3
IN4
D4
S4
GND
DIP/SO
DIP/SO
DG445
LOGIC
0
1
SWITCH
OFF
ON
SWITCHES SHOWN FOR LOGIC "0" INPUT
DG444
LOGIC
0
1
SWITCH
ON
OFF
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
IN2
D2
S2
V+
V-
S1
D1
IN1
DG444
V
L
S3
D3
IN3
IN4
D4
S4
GND
TOP VIEW
19-4705; Rev 3; 9/01
Pin Configurations/Functional Diagrams/Truth Tables
PART
DG444
CJ
TEMP. RANGE
0°C to +70°C
PIN-PACKAGE
16 Plastic DIP
DG444CY
DG444C/D
DG444DJ
DG444DY
Ordering Information continued at end of data sheet.
*Contact factory for dice specifications.
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
16 Narrow SO
Dice*
16 Plastic DIP
16 Narrow SO
Rail-to Rail is a registered trademark of Nippon Motorola, Ltd.
Pin Configurations continued at end of data sheet.