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DG308MAXIMN/a197avaiQuad / SPST Analog Switches
DG308AAKINTERSILN/a200avaiQuad / SPST Analog Switches
DG308ACKSI/HARN/a200avaiQuad / SPST Analog Switches
DG308ACYMAXIM ?N/a12avaiQuad Monolithic SPST / CMOS Analog Switch
DG309AKHARN/a5avaiQuad / SPST Analog Switches
DG309CJSILICONIXN/a522avaiQuad / SPST Analog Switches
DG309CYHARN/a82avaiQuad / SPST Analog Switches
DG309CYHARRISN/a41avaiQuad / SPST Analog Switches
DG309CYHARRN/a40avaiQuad / SPST Analog Switches


DG309CJ ,Quad / SPST Analog Switches  FaxBack 408-970-5600S-52882—Rev. E, 28-Apr-974-1DG308A/DG309Vishay Siliconix 

DG308-DG308AAK-DG308ACK-DG308ACY-DG309AK-DG309CJ-DG309CY
Quad / SPST Analog Switches
& the latest literature: http://,
_______________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.
________________________Applications

Sample-and-Hold Circuits
Test Equipment
Communications Systems
PBX, PABX
Guidance and Control Systems
Heads-Up Displays
Military Radios
____________________________Features
60ΩrDS(ON)Single/Bipolar-Supply OperationCMOS Logic CompatibleMonolithic, Low-Power CMOS Design
DG308A/DG309
Quad,SPST Analog Switches
________________________________________________________________Maxim Integrated Products1
______Pin Configuration/Truth Table
__________Typical Operating Circuit

19-3926; Rev 0; 3/91
** Contact factory for availability and processing to MIL-STD-883.
DG308A/DG309
Quad,SPST Analog Switches_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS

(V+ = 15V, V- = -15V, TA= TMINto TMAX, unless otherwise noted.) (Note 2)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Voltage Referenced to V-....................................................................................+44V
GND.................................................................................+25V
Digital Inputs VS, VD................(V- - 2V) to (V+ + 2V) or 20mA,
whichever occurs first
Current into Any Terminal (except S or D)..........................30mA
Continuous Current (S or D)................................................20mA
Peak Current (S or D)
(pulsed at 1ms, 10% duty cycle max)............................70mA
Continuous Power Dissipation (TA= +70°C) (Note 1)
Plastic DIP (derate 10.53mW/°C above +70°C)............842mW
Narrow SO (derate 8.70mW/°C above +70°C).............696mW
CERDIP (derate 10.00mW/°C above +70°C)................800mW
Operating Temperature Ranges
DG308AC_/DG309C_.........................................0°C to +70°C
DG308AD_/DG309D_......................................-40°C to +85°C
DG308AAK/DG309AK...................................-55°C to +125°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10sec).............................+300°C
DG308A/DG309
Quad,SPST Analog Switches
_______________________________________________________________________________________3
ELECTRICAL CHARACTERISTICS (continued)

(V+ = 15V, V- = -15V, TA= TMINto TMAX, unless otherwise noted.) (Note 2)
Note 1:
All leads are soldered or welded to the PC board.
Note 2:
The algebraic convention where the most negative value is a minimum and the most positive value a maximum is used in
this data sheet.
Note 3:
Off isolation = 20log10 VD/VS, VD= output, VS= input to off switch.
Figure 1.Switching-Time Test Circuit
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.___________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-76001991 Maxim Integrated Products Printed USAis a registered trademark of Maxim Integrated Products.
DG308A/DG309
Quad,SPST Analog Switches
__________________________________________Typical Operating Characteristics

(TA = +25°C, unless otherwise noted.)
DRAIN-SOURCE ON-RESISTANCE
vs. DRAIN VOLTAGE & POWER SUPPLIES
400DG308A309 TOC01
VD (V)
rDS(ON)
POWER-SUPPLY CURRENT
AND VOLTAGE vs. TEMPERATURE
DG308A309 TOC02
TEMPERATURE (°C)
ISUPPLY
(nA)
DRAIN-SOURCE ON-RESISTANCE
vs. DRAIN VOLTAGE & POWER SUPPLIES
DG308A309 TOC04
VD (V)
rDS(ON)
LEAKAGE CURRENTS vs.
ANALOG VOLTAGE
DG308A309 TOC03
VANALOG (V)
, I
(pA)
_____________________Pin Description
__________Applications Information
The DG308A/DG309 switch positive analog signals while
using a single positive supply, allowing use in applica-
tions where only one supply is available. The disadvan-
tages of using a single supply are slower switching
speed and increased rDS(ON). The Power-Supply
Current and Voltage vs. Temperaturegraph shows the
typical curve for a single-supply design. As stated in the
Absolute Maximum Ratings, the analog voltage should
not go above or below the supply voltages, which are V+
and 0V in single-supply operation.
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