MAX392CSE(1999) データシートの表示（PDF） - Maxim Integrated

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MAX392CSE
(Rev.:1999)

Precision, Quad, SPST Analog Switches

Maxim Integrated 

Precision, Quad, SPST Analog Switches

______________________________________________________________Pin Description

PIN

1, 16, 9, 8

2, 15, 10, 7

3, 14, 11, 6

4

5

12

13

NAME

IN1–IN4

COM1–COM4

NO1–NO4

or

NC1–NC4

V-

GND

N.C.

V+

Inputs

Analog Switch Common Terminal

FUNCTION

Switch Inputs

Negative Supply-Voltage Input

Ground

No Connect—not internally connected

Positive Supply-Voltage Input—connected to substrate

__________Applications Information

Overvoltage Protection

Proper power-supply sequencing is recommended for

all CMOS devices. Do not exceed the absolute maxi-

mum ratings, because stresses beyond the listed rat-

ings may cause permanent damage to the devices.

Always sequence V+ on first, followed by V-, and then

logic inputs. If power-supply sequencing is not possi-

ble, add two small signal diodes in series with supply

pins for overvoltage protection (Figure 1). Adding

diodes reduces the analog signal range to 1V below V+

and 1V below V-, but low switch resistance and low

leakage characteristics are unaffected. Device opera-

tion is unchanged, and the difference between V+ and

V- should not exceed 17V.

POSITIVE SUPPLY

V+

NO

COM

Vg

V-

NEGATIVE SUPPLY

Figure 1. Overvoltage Protection Using Two External Blocking

Diodes

_______________________________________________________________________________________ 7

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