
D
Improved, Quad, S PS T Analog S witc hes
________________________________________________________________ Maxim Integrated Products
Call toll free 1-800-998-8800 for free samples or literature.
1
_______________General Desc ription
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 ESD tolerance of
2000V minimum 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 4 normally
closed switches and the DG445 has 4 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.
________________________Applic ations
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 Electrostatic Discharge (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
Ordering Information continued at end of data sheet.
*Contact factory for dice specifications.
PART
DG444
CJ
DG444DY
DG444C/D
DG444DJ
DG444DY
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
16 Plastic DIP
16 Narrow SO
Dice*
16 Plastic DIP
16 Narrow SO
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
_____________________Pin Configurations/Func tional Diagrams/Truth Tables
19-4705; Rev 1; 4/94