EVALUATION KIT AVAILABLE
Click
here
for production status of specific part numbers.
MAX22191
Parasitically Powered Digital Input
General Description
The MAX22191 is an IEC 61131-2 compliant, industrial
digital input (DI) device that translates a 24V digital industrial
input to a 2.4mA (typ) current for driving optical isolators.
Voltage thresholds and current levels in the MAX22191
are compliant with Type 1 and Type 3 inputs, while minimizing
power dissipation. The MAX22191 is also compliant with
48V inputs, with the addition of external resistors.
Operating power is derived from the input signal, eliminating
the need for an external field-side power supply. A 250ns
(max) fast response time is ideal for high-speed inputs.
Additionally, a CMOS-compatible test input is available for
safety diagnostics.
The MAX22191 features robust functionality for harsh
industrial systems and is capable of normal operation with
input signals ranging from -60V to +60V. Integrated thermal
shutdown further protects the device when V
CC
is present.
The MAX22191 is available in a small, 6-lead SOT23
package and operates over the -40°C to +125°C ambient
temperature range.
Benefits and Features
●
High Integration for Flexible Circuit Designs
• 250ns (max) Response Time
• Parasitically Powered from the Field Input
• Current Sourcing Input with Optical Isolators
• Current Sinking Input with Optical Isolators
• Current Sinking Input with Logic Devices
• Test Pulse Input
●
Reduced Power and Heat Dissipation
• Current Limited Input
●
Robust Design
• Operates from -60V to +60V Input Voltage
• -40°C to +125°C Ambient Operating Temperature
Ordering Information
appears at end of data sheet.
Applications
●
●
●
●
●
Process Automation
Industrial Automation
Motor Controls
Individually Isolated Inputs
Current Sourcing Inputs
Simplified Block Diagram
IN
MAX22191
2.3mA
INT
REF
OUT
TEST
REXT
VCC
19-100229; Rev 0; 12/17
MAX22191
Parasitically Powered Digital Input
Absolute Maximum Ratings
(All voltages referenced to GND, unless otherwise stated)
V
CC
........................................................................-0.3V to +6V
IN ...........................................................................-70V to +60V
TEST .......................................................................-0.3V to +6V
OUT (3.0V
≤
V
CC
≤
5.5V) ........................ -0.3V to (V
CC
+ 0.3V)
OUT (V
CC
= 0V) ....................... -0.3V to min [(V
IN
+ 0.3V), +6V]
REXT (3.0V
≤
V
CC
≤
5.5V) ...................... -0.3V to (V
CC
+ 0.3V)
REXT (V
CC
= 0V) ..................... -0.3V to min [(V
IN
+ 0.3V), +6V]
Short-Circuit Duration
OUT to GND ..........................................................Continuous
Continuous Power Dissipation (T
A
= +70°C)
6L SOT23 (derate at 8.7mW/°C above +70°C) ...........696mW
Operating Temperature Range
Ambient Temperature ................................... -40°C to +125°C
Junction Temperature ..................................................+150°C
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (soldering, 10s) ................................. +300°C
Soldering (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)
6L SOT23
Junction-to-Ambient Thermal Resistance (θ
JA)
Multilayer Board.........................................................115°C/W
Junction-to-Case Thermal Resistance (θ
JC)
Multilayer Board ........................................................80°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.
DC Electrical Characteristics
V
IN
= 0V to 60V, V
CC
= 0V, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at V
IN
= 24V, REXT
= 40.2kΩ (±1%),
and T
A
= +25°C. (Notes 2, 3)
PARAMETER
DIGITAL INPUT (IN)
IN Functional Operating Range
IN Voltage Upper Threshold
V
IN_F
V
CC
= 0V
V
INTHU
OUT is high
3.0V ≤ V
CC
≤ 5.5V
(Note 5)
V
CC
= 0V
IN Voltage Lower Threshold
V
INTHL
OUT is low
V
IN
= 7V, steady
state, R
EXT
=
40.2kΩ, V
OUT
= 3V
V
IN
= 10V to 36V,
steady state,
R
EXT
= 40.2kΩ,
V
OUT
= 0V to 3V
3.0V ≤ V
CC
≤ 5.5V
(Note 5)
V
CC
= 0V
3.0V ≤ V
CC
≤ 5.5V
(Note 5)
V
CC
= 0V
3.0V ≤ V
CC
≤ 5.5V
(Note 5)
7
7
1.5
1.5
4
2.1
2.1
0
2
-1
V
CC
-
0.4
2.3
+1
2.4
5.5
2.7
mA
2.75
3
V
mA
μA
V
`
V
-60
+60
10
10
V
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
IN Current Low
IN Boost Current
IN Current High
OUTPUT (OUT)
OUT Load Voltage
OUT High Current
OUT Low Current
OUT Voltage High
I
INL
I
INB
I
INH
mA
mA
V
IN
< V
INTHU
(Note 4)
V
OUT
I
OUTH
I
OUTL
V
OH
Load on OUT is an LED
V
OUT
= 0.5V to 3V, V
IN
= 10V
V
IN
< V
INTHL
, V
OUT
= 0V
3.0V
≤
V
CC
≤
5.5V, I
LOAD
= 1mA (Note 5)
www.maximintegrated.com
Maxim Integrated
│
2
MAX22191
Parasitically Powered Digital Input
DC Electrical Characteristics (continued)
V
IN
= 0V to 60V, V
CC
= 0V, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at V
IN
= 24V, REXT
= 40.2kΩ (±1%),
and T
A
= +25°C. (Notes 2, 3)
PARAMETER
OUT Voltage Low
Auxiliary Power Supply Range
Auxiliary Power Supply Current
TEST INPUT
TEST Input High Threshold
TEST Input Low Threshold
TEST Input Pulldown Resistance
PROTECTION
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
ESD (All Pins)
T
SHDN
T
SHDN_HYS
Human Body Model
(Note 7)
160
23
±2
°C
°C
kV
V
TESTH
V
TESTL
R
PD
3.0V ≤ V
CC
≤ 5.5V
V
CC
= 0V
3.0V ≤ V
CC
≤ 5.5V
V
CC
= 0V
V
CC
/3
1.3
250
(2/3)V
CC
2.8
V
V
kΩ
SYMBOL
V
OL
V
CC
I
CC
CONDITIONS
3.0V
≤
V
CC
≤
5.5V, I
SINK
= 1mA (Note 5)
(Note 6)
V
CC
= 3.0V
V
CC
= 5.5V
3.0
270
380
MIN
TYP
MAX
0.4
5.5
400
600
UNITS
V
V
μA
AUXILIARY POWER SUPPLY (V
CC
)
www.maximintegrated.com
Maxim Integrated
│
3
MAX22191
Parasitically Powered Digital Input
AC Electrical Characteristics
V
IN
= 0V to 60V, V
CC
= 0V, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at V
IN
= 24V, REXT
= 40.2kΩ (±1%),
and T
A
= +25°C. (Note 2)
PARAMETER
IN to OUT Low-to-High Propagation
Delay
SYMBOL
t
PDLH
C
L
= 15pF,
Figure 1
CONDITIONS
V
CC
= 0V,
R
L
= 1.5kΩ
V
CC
= 3.0V,
R
L
is open
V
CC
= 0V,
R
L
= 1.5kΩ
V
CC
= 3.0V,
R
L
is open
250
195
ns
75
1.5
1.8
V
CC
= 0V,
R
L
= 1.5kΩ,
3.0V ≤ V
CC
≤ 5.5V,
R
L
is open
TEST low to high,
OUT high to low
TEST high to low,
OUT low to high
MIN
TYP
MAX
250
ns
200
250
ns
200
ps
UNITS
IN to OUT High-to-Low Propagation
Delay
IN to OUT Propagation Delay Jitter
IN to OUT Propagation
Delay Skew, Part-to-Part
t
PDHL
C
L
= 15pF,
Figure 1
C
L
= 15pF, RMS jitter, Figure 1
t
SKEWP2P
C
L
= 15pF,
Figure 1 (Note 5)
TEST Propagation Delay
Note
Note
Note
Note
Note
2:
3:
4:
5:
6:
V
CC
= 0V or 3V,
V
IN
= 11V
μs
All units are production tested at T
A
= +25°C. Specifications over temperature are guaranteed by design and characterization.
All voltages are referenced to ground, unless otherwise noted.
See the
Boost Current
section for more information.
Not production tested. Guaranteed by design
V
CC
is an auxiliary supply input. When V
CC
is powered from an external 3V to 5.5V supply, the propagation delay is
reduced and the output changes from a current souce to a CMOS output. When using power from IN to power the device,
connect V
CC
to GND (V
CC
= 0V).
Note 7:
Thermal shutdown protection is only enabled when V
CC
is present. Thermal shutdown does not occur when VCC = 0V.
www.maximintegrated.com
Maxim Integrated
│
4
MAX22191
Parasitically Powered Digital Input
IN
OUT
REXT
MAX22191
TEST
VCC
R
L
C
L
V
IN
t
PDLH
I
OUT
V
INTHU
V
INTHL
0V
t
PDHL
90%
10%
0mA
+
GND
-
Figure 1. Propagation Delay Test Circuit and Timing Diagram
Typical Operating Characteristics
(V
IN
= 24V, REXT
= 40.2kΩ (±1%), R
L
= 1.5kΩ on OUT,
T
A
= +25°C, unless otherwise noted.)
5.0
4.5
4.0
IN CURRENT (mA)
IN CURRENT vs. VOLTAGE
(V
CC
= 0V)
T
A
= +25ºC
toc01
V
CC
= 0V
R
L
= 1.5kΩ
3.5
3.0
2.5
IN CURRENT vs. VOLTAGE
(V
CC
= 3.3V)
toc02
4.5
4.0
3.5
INPUT AND OUTPUT CURRENT
vs. INPUT VOLTAGE
toc03
V
CC
= 3.3V
R
L
= 1.5kΩ
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
-60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60
IN VOLTAGE (V)
T
A
= -40ºC
T
A
= +125ºC
IN CURRENT (mA)
2.0
1.5
1.0
0.5
0.0
CURRENT (mA)
3.0
2.5
2.0
1.5
I
IN
,
IN FALLING
I
IN
,
IN RISING
T
A
= +125ºC
T
A
= -40ºC
I
OUT
,
IN RISING
I
OUT
,
IN FALLING
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
IN VOLTAGE (V)
T
A
= +25ºC
1.0
0.5
0.0
-60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60
IN VOLTAGE (V)
10.0
9.8
9.6
9.4
V
INTHU
(V)
UPPER VOLTAGE THRESHOLD
vs. TEMPERATURE
toc04
9.0
8.8
8.6
LOWER VOLTAGE THRESHOLD
vs. TEMPERATURE
toc05
3.0
2.9
2.8
IN CURRENT (mA)
IN CURRENT vs. TEMPERATURE
V
IN
= +30V
toc06
8.4
V
INTHL
(V)
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
9.2
9.0
8.8
8.6
8.4
8.2
8.0
-40 -25 -10 5
20 35 50 65 80 95 110 125
TEMPERATURE (ºC)
8.2
8.0
7.8
7.6
7.4
7.2
7.0
-40 -25 -10 5
20 35 50 65 80 95 110 125
TEMPERATURE (ºC)
-40 -25 -10 5
20 35 50 65 80 95 110 125
TEMPERATURE (ºC)
www.maximintegrated.com
Maxim Integrated
│
5
DSP 与 ARM 处理器
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
