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_______________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 60

Ω. 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

o 60

Ω r

DS(ON)

o Single/Bipolar-Supply Operation

o CMOS Logic Compatible

o Monolithic, Low-Power CMOS Design

Quad, SPST Analog Switches

________________________________________________________________

Maxim Integrated Products

1

DIP/SO

LOGIC

DG308A

TRUTH TABLE

0

1

OFF

ON

DG309

ON

OFF

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

IN2

D2

S2

V+ (SUBSTRATE)

V-

S1

D1

IN1

DG308A

DG309

N.C.

S3

D3

IN3

IN4

D4

S4

GND

TOP VIEW

______Pin Configuration/Truth Table

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

DG308A

DG309

5k

-15V

+15V

**

**

5k

40k

10k

20k

PROGRAMMABLE-GAIN AMPLIFIER

* PINS 1, 8, 9, AND 16 ARE LOGIC-CONTROL INPUTS.

__________Typical Operating Circuit

19-3926; Rev 0; 3/91

PART

DG308ACJ

DG308ACY

DG308ACK

0°C to +70°C

0°C to +70°C

0°C to +70°C

TEMP. RANGE

PIN-PACKAGE

16 Plastic DIP

16 Narrow SO

16 CERDIP

______________Ordering Information

* Contact factory for dice specifications.

** Contact factory for availability and processing to MIL-STD-883.

DG308AC/D

0°C to +70°C

Dice*

DG308ADJ

DG308ADY

DG308ADK

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

16 Plastic DIP

16 Narrow SO

16 CERDIP

DG308AAK

-55°C to +125°C

16 CERDIP**

DG309CJ

DG309CY

DG309CK

0°C to +70°C

0°C to +70°C

0°C to +70°C

16 Plastic DIP

16 Narrow SO

16 CERDIP

DG309C/D

0°C to +70°C

Dice*

DG309DJ

DG309DY

DG309DK

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

16 Plastic DIP

16 Narrow SO

16 CERDIP

DG309AK

-55°C to +125°C

16 CERDIP**