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7

PS8187A

06/29/99

PS301/PS302/PS303

Precision, Single Supply SPST Analog Switches

Overvoltage

Proper power-supply sequencing is recommended for all CMOS

devices. Do not exceed the absolute maximum ratings, because

stresses beyond the listed ratings may cause permanent damage to

the devices. Always sequence V+ on first, and then logic inputs.

If power-supply sequencing is not possible, add two small signal

diodes or two current limiting resistors in series with the supply

pins for overvoltage protection (Figure 1). Adding diodes reduces

the analog signal range, but low switch resistance and low leakage

characteristics are unaffected.

Applications Information

Figure 1. Overvoltage protection is accomplished by using two

external blocking diodes or two current limiting resistors.

V+

Positive Supply

COM

NO

Vg

V-

Protection

GND

When powered from +5V the PS301/PS302/PS303 can be oper-

ated with either TTL- or CMOS-Logic levels. If V+ is different

than +5V, the logic threshold level will vary.

Power consumption is minimal when the logic control voltages

reach V+ or GND.

Logic Levels

Ordering Information

t

r

a

Pe

g

n

a

R

.

p

m

e

Te

g

a

k

c

a

P

3

S

P1

0A

P

CC

º

0

7

+

o

t

C

º

0P

I

D

c

it

s

a

l

P

8

3

S

P1

0A

S

CC

º

0

7

+

o

t

C

º

0O

S

w

o

r

r

a

N

8

3

S

P1

0CUA

C

º

0

7

+

o

t

C

º

0P

O

S

M

8

3

S

P1

0A

P

EC

º

5

8

+

o

t

C

º

0

4

–P

I

D

c

it

s

a

l

P

8

3

S

P1

0A

S

EC

º

5

8

+

o

t

C

º

0

4

–O

S

w

o

r

r

a

N

8

3

S

P2

0A

P

CC

º

0

7

+

o

t

C

º

0P

I

D

c

it

s

a

l

P

8

3

S

P2

0A

S

CC

º

0

7

+

o

t

C

º

0O

S

w

o

r

r

a

N

8

3

S

P2

0CUA

C

º

0

7

+

o

t

C

º

0P

O

S

M

8

t

r

a

Pe

g

n

a

R

.

p

m

e

Te

g

a

k

c

a

P

A

P

E

2

0

3

S

P

–

C

º

5

8

+

o

t

C

º

0

4

P

I

D

c

it

s

a

l

P

8

A

S

E

2

0

3

S

P

–

C

º

5

8

+

o

t

C

º

0

4

O

S

w

o

r

r

a

N

8

A

P

C

3

0

3

S

PC

º

0

7

+

o

t

C

º

0P

I

D

c

it

s

a

l

P

8

A

S

C

3

0

3

S

PC

º

0

7

+

o

t

C

º

0O

S

w

o

r

r

a

N

8

A

U

C

3

0

3

S

PC

º

0

7

+

o

t

C

º

0P

O

S

M

8

0

3

S

P

P

E

–

C

º

5

8

+

o

t

C

º

0

4

P

I

D

c

it

s

a

l

P

8

A

S

E

3

0

3

S

P

–

C

º

5

8

+

o

t

C

º

0

4

O

S

w

o

r

r

a

N

8

Pericom Semiconductor Corporation

2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com