MAX391CSE Datasheet Download

Part No.:
MAX391CSE
Download:
Download Datasheet
Description:
[Precision, Quad, SPST Analog Switches]
File Size:
382 K
Page:
13 Pages
Logo:
Manufacturer:
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
PCB Prototype
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Precision, Quad, SPST Analog Switches
______________________________________________________________Pin Description
PIN
DIP/SO/TSSOP
1, 16, 9, 8
2, 15, 10, 7
3, 14, 11, 6
4
5
12
13
QFN
15, 14, 7, 6
16, 13, 8, 5
1, 12, 9, 4
2
3
10
11
EP
NAME
IN1–IN4
COM1–COM
NO1–NO4
or
NC1–NC4
V-
GND
N.C.
V+
EP
Inputs
Analog Switch Common Terminal
Switch Inputs
Negative-Supply Voltage Input
Ground
No Connection. Not internally connected
Positive-Supply Voltage Input—connected to substrate
Exposed Pad. Connect to V+.
FUNCTION
MAX391/MAX392/MAX393
__________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
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