Datasheet

Detailed Description
The MAX4575/MAX4576/MAX4577 are dual SPST
CMOS analog switches with circuitry providing ±15kV
ESD protection on the NO and NC pins. The CMOS
switch construction provides rail-to-rail signal handling
while consuming virtually no power. Each of the two
switches is independently controlled by a TTL/CMOS-
level-compatible digital input.
Applications Information
Do not exceed the absolute maximum ratings because
stresses beyond the listed ratings may cause perma-
nent damage to the device.
Proper power-supply sequencing is recommended for
all CMOS devices. Always sequence V+ on first, fol-
lowed by the logic inputs, NO/NC, or COM.
Operating Considerations for
High-Voltage Supply
The MAX4575/MAX4576/MAX4577 are capable of
+12V single-supply operation with some precautions.
The absolute maximum rating for V+ is +13V (refer-
enced to GND). When operating near this region,
bypass V+ with a minimum 0.1µF capacitor to ground
as close to the IC as possible.
±15kV ESD Protection
The MAX4575/MAX4576/MAX4577 are ±15kV ESD pro-
tected (according to IEC 1000-4-2) at the NC/NO termi-
nals. To accomplish this, bidirectional SCRs are
included on-chip between these terminals. When the
voltages at these terminals go Beyond-the-Rail™, the
corresponding SCRs turns on in a few nanoseconds
MAX4575/MAX4576/MAX4577
±15kV ESD-Protected, Low-Voltage, Dual, SPST,
CMOS Analog Switches
_______________________________________________________________________________________ 7
t
R
< 20ns
t
F
< 20ns
50%
0
LOGIC
INPUT
R
L
300Ω
NO_/NC_
GND
C
L
INCLUDES FIXTURE AND STRAY CAPACITANCE.
V
OUT
= V
COM (
R
L
)
R
L
+ R
ON
SWITCH
INPUT
IN
t
OFF
0
COM
SWITCH
OUTPUT
0.9 x V
0UT
0.9 x V
OUT
t
ON
V
OUT
SWITCH
OUTPUT
LOGIC
INPUT
V+
C
L
35pF
V+
V
OUT
V
COM
MAX4575
MAX4576
MAX4577
V+
Figure 1. Switching Time
Figure 2. Off-Isolation/On-Channel Bandwidth
IN
V
IL
OR
V
IH
SIGNAL
GENERATOR 0dBm
V+
10nF
ANALYZER
NO_/NC_
R
L
GND
COM
V+
MAX4575
MAX4576
MAX4577
Beyond-the-Rail is a trademark of Maxim Integrated Products.