MAX14777
Quad Beyond-the-Rails -15V to +35V
Analog Switch
General Description
The MAX14777 quad SPST switch supports analog
signals above and below the rails with a single 3.0V to
5.5V supply. The device features a selectable -15V/+35V
or -15V/+15V analog signal range for all switches. Each
switch has a separate control input to allow independent
switching, making the device an alternative to opto-relays
in applications that do not need galvanic isolation.
The IC features 10Ω (max) on-resistance, and 9mΩ (typ)
R
ON
flatness, along with a low 50nA (max at +85°C) on-
leakage. For maximum signal integrity, the device keeps
this performance over the entire common-mode voltage
range. Each switch can carry up to 60mA (max) of con-
tinuous current in either direction.
The MAX14777 is available in a 20-pin (4mm x 4mm)
TQFN package and is specified over the -40°C to +105°C
temperature range.
Benefits and Features
● Simple, Flexible Board Design
• -15V/+35V Beyond-the-Rails™ Signal Range from
a Single 3.0V to 5.5V Supply
• Selectable -15V/+15V Signal Range for Lower
Supply Current
• 60mA Maximum Current through Each Switch
• 1.62V to 5.5V Logic Interface
●
High-Performance
10Ω R
ON
(max)
● 150mΩ (max) R
ON
Flatness
● ±50nA (max) On-Leakage at T
A
= +85°C
● Saves Board Space
• Small 20-Pin TQFN Package (4mm x 4mm)
● -40°C to +105°C Operating Temperature Range
Applications
●
●
●
●
Industrial Measurement Systems
Instrumentation Systems
4–20mA Switching
ATE Systems
Beyond-the-Rails is a registered trademark of Maxim Integrated
Products, Inc.
Ordering Information
appears at end of data sheet.
Functional Diagram
V
L
V
CC
SEL35
CONFIG
BIAS
GENERATION
V
P
V
N
MAX14777
A1
A2
A3
A4
B1
B2
B3
B4
EN1 EN2 EN3 EN4
For related parts and recommended products to use with this part, refer to
www.maximintegrated.com/MAX14777 related.
19-6714; Rev 1; 10/13
MAX14777
Quad Beyond-the-Rails -15V to +35V
Analog Switch
Absolute Maximum Ratings
(All voltages referenced to GND, unless otherwise noted.)
V
CC
..........................................................................-0.3V to +6V
V
L
............................................................................-0.3V to +6V
EN1, EN2, EN3, EN4, SEL35, I.C...........................-0.3V to +6V
A1, A2, A3, A4, B1, B2, B3, B4
........
(V
N
- 0.3V) to the lesser of
(V
P
+ 0.3V) and (V
N
+ 70V)
V
P
SEL35 = High .....................................................-0.3V to +70V
SEL35 = Low......................................................-0.3V
to +48V
V
P
to V
N
................................................................-0.3V to +70V
V
N
..........................
the greater of -26V and (V
P
- 70V) to +0.3V
Absolute Difference Between Switch I/Os (| A_ - B_ |)
.........70V
Continuous Current ..........................................................±80mA
Continuous Power Dissipation (T
A
= +70°C)
..............................
TQFN (derate 25.6mW/°C above +70°C)
...............2051.3mW
Operating Temperature Range ..........................-40ºC to +105ºC
Junction Temperature ...................................................... +150ºC
Storage Temperature Range .............................-65ºC
to +150°C
Lead Temperature (soldering, 10s)
.................................
+300°C
Soldering Temperature (reflow)
.......................................+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Package Thermal Characteristics
(Note 1)
Junction-to-Ambient Thermal Resistance (θ
JA
)
TQFN ...........................................................................39°C/W
Junction-to-Case Thermal Resistance (θ
JC
)
TQFN .............................................................................6°C/W
Note 1:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to
www.maximintegrated.com/thermal-tutorial.
Electrical Characteristics
(V
CC
= 3.0V to 5.5V, V
L
= 3.3V, T
A
= -40°C to +105°C, unless otherwise noted. Typical values are at V
CC
= 5V and T
A
= +25°C.)
(Note 2)
PARAMETER
DC CHARACTERISTICS
Supply Voltage Range
V
L
Supply Voltage Range
V
CC
V
L
V
CC
= 3.3V,
V
EN_
= V
L
V
CC
= 5.5V,
V
EN_
= V
L
SEL35 = low
SEL35 = high
SEL35 = low
SEL35 = high
(Note 3)
EN_ = high
SEL35 = low
SEL35 = high
SEL35 = low
SEL35 = high
-1
-15
-15
22.5
41.7
-18.2
-60
3.0
1.62
1.8
2.2
0.6
0.8
5.5
5.5
3.4
4.3
1.2
1.65
+1
+15
+35
27.1
49.8
-14.9
+60
µA
V
V
V
mA
mA
V
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
CC
Supply Current
I
CC
V
L
Supply Current
Analog Signal Range
Positive High-Voltage Charge-
Pump Output (Note 3)
Negative High-Voltage Charge-
Pump Output
Continuous Current Through
Switch
I
L
V
A
_
,V
B
_
V
P
V
N
I
A_
SEL35, EN_ = low or high
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Maxim Integrated │
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MAX14777
Quad Beyond-the-Rails -15V to +35V
Analog Switch
Electrical Characteristics (continued)
(V
CC
= 3.0V to 5.5V, V
L
= 3.3V, T
A
= -40°C to +105°C, unless otherwise noted. Typical values are at V
CC
= 5V and T
A
= +25°C.)
(Note 2)
PARAMETER
On-Resistance, Figure 1
SYMBOL
R
ON
CONDITIONS
-15V ≤ V
A_
≤ +35V, SEL35 = high,
I
IN
= ±60mA, Figure 1
-15V ≤ V
A_
≤ +15V, SEL35 = low,
I
IN
= ±60mA, Figure 1
-15V ≤ V
A_
≤ +35V, SEL35 = high,
I
IN
= ±60mA
-15V ≤ V
A_
≤ +15V, SEL35 = low,
I
IN
= ±60mA
-15V ≤ V
A_
≤ +35V, SEL35 = high,
I
IN
= ±60mA, (Note 4)
-15V ≤ V
A_
≤ +15V, SEL35 = low,
I
IN
= ±60mA, (Note 4)
-15V ≤ V
A_
≤ +35V, SEL35 = high,
V
B_
= 0V, +40°C ≤ T
A
≤ +85°C,
Figure 2
-15V ≤ V
A_
≤ +35V, SEL35 = high,
V
B_
= 0V, +40°C ≤ T
A
≤ +105°C,
Figure 2
-15V ≤ V
B_
≤ +35V, SEL35 = high,
V
A_
= 0V, +40°C ≤ T
A
≤ +85°C,
Figure 2
-15V ≤ V
B_
≤ +35V, SEL35 = high,
V
A_
= 0V, +40°C ≤ T
A
≤ +105°C,
Figure 2
-15V ≤ V
A_
≤ +35V, SEL35 = high,
B_ unconnected, +40°C ≤ T
A
≤
+85°C, Figure 2
-15V ≤ V
A_
≤ +35V, SEL35 = high,
B_ unconnected, +40°C ≤ T
A
≤
+105°C, Figure 2
V
CC_
= 0V or
unconnected,
-15V ≤ V
A_
|V
A_
- V
B_
| > 3V,
≤ +35V
current measured at A
V
CC_
= 0V or
unconnected,
|V
A_
- V
B_
| > 3V,
current measured at B
-15V ≤ V
A_
≤ +35V
MIN
TYP
4.4
4.4
9
8
MAX
10
Ω
10
150
mΩ
150
200
mΩ
200
-20
-80
-20
-80
-50
-200
+20
nA
+80
+20
nA
+80
+50
nA
+200
UNITS
On-Resistance Flatness
ΔR
ON
On-Resistance Matching
Between Channels
ΔR
ON_M
A_ Off-Leakage Current
I
L_OFF_A
B_ Off-Leakage Current
I
L_OFF_B
On-Leakage Current
I
L_ON
A_ Power-Off Leakage Current
I
L_PWROFF_A
-5
+5
µA
B_ Power-Off Leakage Current
I
L_PWROFF_B
-5
+5
µA
DIGITAL LOGIC (EN1, EN2, EN3, EN4, SEL35)
Input Voltage Low
Input Voltage High
Input Leakage Current
V
IL
V
IH
I
DLKG
V
EN_
= low or high
0.7 x
V
L
-1
+1
0.3 x
V
L
V
V
µA
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Maxim Integrated │
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MAX14777
Quad Beyond-the-Rails -15V to +35V
Analog Switch
Electrical Characteristics (continued)
(V
CC
= 3.0V to 5.5V, V
L
= 3.3V, T
A
= -40°C to +105°C, unless otherwise noted. Typical values are at V
CC
= 5V and T
A
= +25°C.)
(Note 2)
PARAMETER
AC CHARACTERISTICS
Power-Up Time
t
PWRON
C
VP
= C
VN
= 10nF (Note 6)
V
A_
= ±10V, SEL35 = low,
R
L
= 10kΩ, Figure 3
V
A_
= ±10V, SEL35 = high,
R
L
= 10kΩ, Figure 3
V
A_
= ±10V, R
L
= 10kΩ, Figure 3
(Note 5)
V
A_
= 1V
RMS
,
f = 100kHz,
R
L
= 50Ω,
C
L
= 15pF,
Figure 4
V
A_
= 1V
RMS
,
f = 100kHz,
R
S
= R
L
= 50Ω,
Figure 5
V
CC
= 3V to
5.5V
V
CC
= 0V or
unconnected
V
CC
= 3V to
5.5V
V
CC
= 0V or
unconnected
-88
dB
-66
-101
dB
-93
380
0.038
225
16
12
MHz
%
pC
pF
pF
5
40
µs
40
100
µs
ms
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Enable Turn-On Time
t
ON
Enable Turn-Off Time
t
OFF
Off-Isolation
V
ISO
Crosstalk
V
CT
-3dB Bandwidth
Total Harmonic Distortion
Charge Injection
Input Capacitance
THERMAL SHUTDOWN
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
ESD PROTECTION
All Pins
Note
Note
Note
Note
Note
2:
3:
4:
5:
6:
BW
THD+N
Q
C
ON
C
OFF
V
A_
= 1V
P-P
, R
S
= R
L
= 50Ω,
Figure 6
R
S
= R
L
= 1kΩ, f = 20Hz to 20kHz
V
A_
= GND, C
L
= 1nF, Figure 7
A_, B_ pins, f = 1MHz
At A_ when B_ = GND, or at B_
when A_ = GND, f = 1MHz
Temperature rising
T
SHDN
T
HYST
160
32
°C
°C
kV
Human Body Model
±2
All units are 100% production tested at +85°C. Specifications over temperature are guaranteed by design.
Do not use V
P
or V
N
to power external circuitry.
Tested at -1V, guaranteed by design for -15V
≤ V
A_
≤ +35V.
This parameter does not depend on the status of SEL35.
Power-up time is the time needed of V
P
and V
N
to reach steady-state values.
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Maxim Integrated │
4
MAX14777
Quad Beyond-the-Rails -15V to +35V
Analog Switch
Test Circuits/Timing Diagrams
V
+3.3V
1µF
+5V
1µF
V
L
V
CC
MAX14777
A_
B_
V
IN
GND
I
IN
Figure 1. On-Resistance Measurement
+3.3V
1µF
+5V
1µF
1µF
+3.3V
+5V
1µF
V
L
I
L_OFF
V
CC
I
L_OFF
B_
I
L_ON
V
L
V
CC
MAX14777
A_
MAX14777
A_
B_
A
V
IN
A
V
IN
A
GND
GND
Figure 2. Leakage Current Measurements
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