MAX4581-MAX4583 MAXIM [Maxim Integrated Products], MAX4581-MAX4583 Datasheet - Page 8

• Manufacturer Part Number: MAX4581-MAX4583
• Description: Low-Voltage, CMOS Analog Multiplexers/Switches
• Manufacturer: MAXIM [Maxim Integrated Products]

The MAX4581/MAX4582/MAX4583 construction is typi-
cal of most CMOS analog switches. They have three
supply pins: V
to drive the internal CMOS switches and set the limits of
the analog voltage on any switch. Reverse ESD-
protection diodes are internally connected between
each analog-signal pin and both V
analog signal exceeds V
will conduct. During normal operation, these and other
reverse-biased ESD diodes leak, forming the only cur-
rent drawn from V
Low-Voltage, CMOS Analog
Multiplexers/Switches
Note: Input and output pins are identical and interchangeable. Any may be considered an input or output; signals pass equally well
8
__________Applications Information
12, 1, 5, 2, 4
13, 14, 15,
MAX4581
_______________________________________________________________________________________
—
—
—
—
—
—
11
10
—
—
—
—
—
16
3
6
7
8
9
in both directions.
CC
12, 14, 15, 11
MAX4582
, V
CC
1, 5, 2, 4
Power-Supply Considerations
EE
PIN
—
—
13
—
—
—
—
10
—
—
—
—
16
6
7
8
9
3
or V
, and GND. V
CC
EE
.
or V
MAX4583
EE
14
13
12
11
10
15
16
—
—
—
—
1
2
6
7
8
9
5
3
4
, one of these diodes
CC
CC
and V
and V
X0, X1, X2, X3
Y0, Y1, Y2, Y3
EE
Overview
EE
are used
Enable
NAME
X0–X7
GND
V
. If any
V
X1
X0
Y1
Y0
Z0
Z1
C
X
X
A
B
Y
Z
CC
EE
Analog Switch Inputs 0–7
Analog Switch Output
Analog Switch “X” Inputs 0–3
Analog Switch “X” Output
Analog Switch “X” Normally Open Input
Analog Switch “X” Normally Closed Input
Analog Switch “Y” Normally Open Input
Analog Switch “Y” Normally Closed Input
Digital Enable Input. Normally connect to GND. Can be driven
to logic high to set all switches off.
Negative Analog Supply-Voltage Input. Connect to GND for
single-supply operation.
Ground. Connect to digital ground. (Analog signals have no
ground reference; they are limited to V
Digital Address “A” Input
Digital Address “B” Input
Digital Address “C” Input
Analog Switch “Y” Inputs 0–3
Analog Switch “Y” Output
Analog Switch “Z” Normally Closed Input
Analog Switch “Z” Normally Open Input
Analog Switch “Z” Output
Positive Analog and Digital Supply Voltage Input
Virtually all the analog leakage current comes from the
ESD diodes. Although the ESD diodes on a given signal
pin are identical and therefore fairly well balanced, they
are reverse biased differently. Each is biased by either
V
leakages will vary as the signal varies. The difference in
the two diode leakages to the V
tutes the analog-signal-path leakage current. All analog
leakage current flows between each pin and one of the
supply terminals, not to the other switch terminal. This is
why both sides of a given switch can show leakage cur-
rents of either the same or opposite polarity.
There is no connection between the analog-signal
paths and GND.
CC
or V
EE
and the analog signal. This means their
FUNCTION
Pin Description
CC
CC
and V
and V
EE
EE
.)
pins consti-