19-3926; Rev 0; 3/91
Quad, SPST Analog Switches
_______________General Description
The DG308A/DG309 are quad, single-pole-single-throw
(SPST) analog switches. The DG308A is normally open
(SPST, NO), while the DG309 is normally closed (SPST,
NC). Both parts feature fast switching speeds and low on-
resistance over the analog range. Other features include a
turn-on time under 120ns, a turn-off time under 90ns, and a
channel on-resistance of 60Ω. CMOS inputs provide
reduced input loading and very low leakage currents.
Both parts feature a 44V maximum breakdown voltage rat-
ing that allows 30V peak-to-peak switch-off blocking
capacity. The DG308A/DG309 can be used with split sup-
plies (±5V to ±20V) or a single positive supply (+5V to
+30V), while retaining CMOS-logic-compatible inputs.
____________________________Features
o
60Ω r
DS(ON)
o
Single/Bipolar-Supply Operation
o
CMOS Logic Compatible
o
Monolithic, Low-Power CMOS Design
DG308A/DG309
______________Ordering Information
PART
DG308ACJ
DG308ACY
DG308ACK
DG308AC/D
DG308ADJ
DG308ADY
DG308ADK
DG308AAK
DG309CJ
DG309CY
DG309CK
DG309C/D
DG309DJ
DG309DY
DG309DK
DG309AK
TEMP. RANGE
0°C to +70°C
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
-40°C to +85°C
-55°C to +125°C
0°C to +70°C
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
-40°C to +85°C
-55°C to +125°C
PIN-PACKAGE
16 Plastic DIP
16 Narrow SO
16 CERDIP
Dice*
16 Plastic DIP
16 Narrow SO
16 CERDIP
16 CERDIP**
16 Plastic DIP
16 Narrow SO
16 CERDIP
Dice*
16 Plastic DIP
16 Narrow SO
16 CERDIP
16 CERDIP**
________________________Applications
Sample-and-Hold Circuits
Test Equipment
Communications Systems
PBX, PABX
Guidance and Control Systems
Heads-Up Displays
Military Radios
* Contact factory for dice specifications.
** Contact factory for availability and processing to MIL-STD-883.
__________Typical Operating Circuit
______Pin Configuration/Truth Table
TOP VIEW
IN1
1
D1
2
S1
3
IN2
D2
S2
V+ (SUBSTRATE)
N.C.
S3
D3
IN3
16
15
V
IN
±10V
5k
*
1
2
3
16
*
15
40k
5k
DG308A
DG309
14
13
+15V
12
11
10
9
*
20k
DG308A
DG309
14
13
12
11
10
9
V
OUT
V-
4
GND
5
S4
6
D4
7
IN4
8
DIP/SO
LOGIC
0
1
TRUTH TABLE
DG308A
OFF
ON
-15V
4
5
10k
6
7
*
8
PROGRAMMABLE-GAIN AMPLIFIER
* PINS 1, 8, 9, AND 16 ARE LOGIC-CONTROL INPUTS.
DG309
ON
OFF
________________________________________________________________
Maxim Integrated Products
1
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