M
Features
•
•
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•
•
•
•
•
•
•
•
Low Quiescent Current: 600 nA/comparator (typ.)
Rail-to-Rail Input: V
SS
- 0.3V to V
DD
+ 0.3V
CMOS/TTL-Compatible Output
Propagation Delay 4 µs (typ.)
Wide Supply Voltage Range: 1.6V to 5.5V
Available in Single, Dual and Quad
Single available in SOT-23-5, SC-70-5 packages
Chip Select (CS) with MCP6543
Low Switching Current
Internal Hysteresis: 3.3 mV (typ.)
Industrial Temperature: -40°C to +85°C
MCP6541/2/3/4
Description
The Microchip Technology Inc. MCP6541/2/3/4 family
of comparators is offered in single (MCP6541), single
with chip select (MCP6543), dual (MCP6542) and quad
(MCP6544) configurations. The outputs are push-pull
(CMOS/TTL-compatible) and are capable of driving
heavy DC or capacitive loads.
These comparators are optimized for low power, single-
supply operation with greater than rail-to-rail input
operation. The push-pull output of the MCP6541/2/3/4
family supports rail-to-rail output swing and interfaces
with TTL/CMOS logic. The internal input hysteresis
eliminates output switching due to internal input noise
voltage, reducing current draw. The output limits supply
current surges and dynamic power consumption while
switching. This product family operates with a single-
supply voltage as low as 1.6V and draws less than 1 µA/
comparator of quiescent current.
The related MCP6546/7/8/9 family of comparators from
Microchip has an open-drain output. Used with a pull-up
resistor, these devices can be used as level-shifters for
any desired voltage up to 10V and in wired-OR logic.
Push-Pull Output Sub-Microamp Comparators
Typical Applications
•
•
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Laptop Computers
Mobile Phones
Metering Systems
Hand-held Electronics
RC Timers
Alarm and Monitoring Circuits
Windowed Comparators
Multi-vibrators
Related Devices
• Open-Drain Output: MCP6546/7/8/9
Package Types
MCP6541
PDIP, SOIC, MSOP
NC
V
IN
–
V
IN
+
V
SS
1
2
3
4
-
+
MCP6541-R
SOT-23-5
OUT 1
V
DD
2
V
IN
+ 3
5 V
SS
-
+
MCP6542
PDIP, SOIC, MSOP
1
2
3
4
- +
+ -
MCP6544
PDIP, SOIC, TSSOP
1
2
3
4
5
6
7
- + + -
14
- + + - 13
12
11
10
9
8
8
7
6
5
NC
V
DD
OUT
NC
OUTA
V
INA
–
4 V
IN
– V
INA
+
V
SS
8
7
6
5
V
DD
OUTA
OUTB V
INA
–
V
INB
– V
INA
+
V
DD
V
INB
+
V
INB
+
V
INB
–
OUTB
OUTD
V
IND
–
V
IND
+
V
SS
V
INC
+
V
INC
–
OUTC
MCP6541
SOT-23-5, SC-70-5
OUT 1
V
SS
2
V
IN
+ 3
5 V
DD
-
+
MCP6543
PDIP, SOIC, MSOP
NC
V
IN
–
V
IN
+
V
SS
1
2
3
4
-
+
4 V
IN
–
8 CS
7 V
DD
6 OUT
5 NC
2003 Microchip Technology Inc.
DS21696C-page 1
MCP6541/2/3/4
1.0
1.1
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
V
DD
- V
SS
.........................................................................7.0V
All inputs and outputs ...................... V
SS
–0.3V to V
DD
+0.3V
Difference Input voltage ....................................... |V
DD
- V
SS
|
Output Short-Circuit Current .................................continuous
Current at Input Pins ....................................................±2 mA
Current at Output and Supply Pins ............................±30 mA
Storage temperature .....................................-65°C to +150°C
Maximum Junction Temperature (T
J
) .......................... +150°C
ESD protection on all pins (HBM;MM) ...................4 kV; 400V
† Notice:
Stresses above those listed under “Maximum Rat-
ings” may cause permanent damage to the device. This is a
stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operational listings of this specification is not implied.
Exposure to maximum rating conditions for extended periods
may affect device reliability.
PIN FUNCTION TABLE
NAME
V
IN
+, V
INA
+, V
INB
+, V
INC
+,
V
IND
+
V
DD
V
SS
OUT, OUTA, OUTB, OUTC,
OUTD
CS
NC
FUNCTION
Non-Inverting Inputs
V
IN
–, V
INA
–, V
INB
–, V
INC
–, V
IND
– Inverting Inputs
Positive Power Supply
Negative Power Supply
Outputs
Chip Select
Not Connected
DC CHARACTERISTICS
Electrical Specifications:
Unless otherwise indicated, V
DD
= +1.6V to +5.5V, V
SS
= GND, T
A
= +25°C,V
IN
+ = V
DD
/2,
V
IN–
= V
SS
, and R
L
= 100 kΩ to V
DD
/2 (Refer to Figure 1-3).
Parameters
Power Supply
Supply Voltage
Quiescent Current per comparator
Input
Input Voltage Range
Common Mode Rejection Ratio
Common Mode Rejection Ratio
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Input Offset Voltage
Drift with Temperature
Input Hysteresis Voltage
Drift with Temperature
Drift with Temperature
Input Bias Current
Over-Temperature
Input Offset Current
Common Mode Input Impedance
Differential Input Impedance
Push-Pull Output
High-Level Output Voltage
Low-Level Output Voltage
Short-Circuit Current
Note 1:
2:
3:
V
OH
V
OL
I
SC
V
DD
−0.2
—
—
—
—
±50
—
V
SS
+0.2
—
V
V
mA
I
OUT
= -2 mA, V
DD
= 5V
I
OUT
= 2 mA, V
DD
= 5V
(Note
2)
V
CMR
CMRR
CMRR
CMRR
PSRR
V
OS
∆V
OS
/∆T
A
V
HYST
∆V
HYST
/∆T
A
∆V
HYST
/∆T
A
I
B
I
B
I
OS
Z
CM
Z
DIFF
V
SS
−0.3
55
50
55
63
-7.0
—
1.5
—
—
—
—
—
—
—
—
70
65
70
80
±1.5
±3
3.3
10
5
1
—
±1
10
13
||4
10 ||2
13
Sym
V
DD
I
Q
Min
1.6
0.3
Typ
—
0.6
Max
5.5
1.0
V
DD
+0.3
—
—
—
—
+7.0
—
6.5
—
—
—
100
—
—
—
Units
V
µA
V
dB
dB
dB
dB
mV
mV
I
OUT
= 0
Conditions
V
DD
= 5V, V
CM
= -0.3V to 5.3V
V
DD
= 5V, V
CM
= 2.5V to 5.3V
V
DD
= 5V, V
CM
= -0.3V to 2.5V
V
CM
= V
SS
V
CM
= V
SS
(Note 1)
V
CM
= V
SS
(Note 1)
µV/°C T
A
= -40°C to +85°C, V
CM
= V
SS
µV/°C T
A
= -40°C to +25°C, V
CM
= V
SS
µV/°C T
A
= +25°C to +85°C, V
CM
= V
SS
pA
pA
pA
Ω||pF
Ω||pF
V
CM
= V
SS
T
A
= -40°C to +85°C, V
CM
= V
SS
(Note 3)
V
CM
= V
SS
The input offset voltage is the center (average) of the input-referred trip points. The input hysteresis is the difference
between the input-referred trip points.
Limit the output current to Absolute Maximum Rating of 30 mA.
Input bias current over temperature is not tested for SC-70-5 package.
DS21696C-page 2
2003 Microchip Technology Inc.
MCP6541/2/3/4
AC CHARACTERISTICS
Electrical Specifications:
Unless otherwise indicated, V
DD
= +1.6V to +5.5V, V
SS
= GND, T
A
= +25°C, V
IN
+ = V
DD
/2,
Step = 200 mV, Overdrive = 100 mV, and C
L
= 36 pF (Refer to Figure 1-2 and Figure 1-3).
Parameters
Rise Time
Fall Time
Propagation Delay (High-to-Low)
Propagation Delay (Low-to-High)
Propagation Delay Skew
Maximum Toggle Frequency
Input Noise Voltage
Note 1:
Sym
t
R
t
F
t
PHL
t
PLH
t
PDS
f
MAX
f
MAX
E
N
Min
—
—
—
—
—
—
—
—
Typ
0.85
0.85
4
4
±0.2
160
120
200
Max
—
—
8
8
—
—
—
—
Units
µs
µs
µs
µs
µs
kHz
kHz
µV
P-P
(Note 1)
V
DD
= 1.6V
V
DD
= 5.5V
Conditions
10 Hz to 100 kHz
Propagation Delay Skew is defined as: t
PDS
= t
PLH
- t
PHL
.
SPECIFICATIONS FOR MCP6543 CHIP-SELECT
Electrical Specifications:
Unless otherwise indicated, V
DD
= +1.6V to +5.5V, V
SS
= GND, T
A
= +25°C, V
IN
+ = V
DD
/2, V
IN
–
= V
SS
,
and C
L
= 36 pF (Refer to Figures 1-1 and 1-3).
Parameters
CS Low Specifications
CS Logic Threshold, Low
CS Input Current, Low
CS High Specifications
CS Logic Threshold, High
CS Input Current, High
CS Input High, V
DD
Current
CS Input High, GND Current
Comparator Output Leakage
CS Dynamic Specifications
CS Low to Comparator Output Low
Turn-on Time
CS High to Comparator Output
High Z Turn-off Time
CS Hysteresis
Sym
Min
Typ
Max
Units
Conditions
V
IL
I
CSL
V
SS
—
—
5.0
0.2V
DD
—
V
pA
CS = V
SS
V
IH
I
CSH
I
DD
I
SS
I
O(LEAK)
0.8V
DD
—
—
—
—
—
1
18
-20
1
V
DD
—
—
—
—
V
pA
pA
pA
pA
CS = V
DD
CS = V
DD
CS = V
DD
V
OUT
= V
DD
t
ON
t
OFF
V
CS_HYST
—
—
—
2
10
0.6
50
—
—
ms
µs
V
CS = 0.2 V
DD
to V
OUT
= V
DD
/2,
V
IN
– = V
DD
CS = 0.8 V
DD
to V
OUT
= V
DD
/2,
V
IN
– = V
DD
V
DD
= 5V
CS
t
ON
V
OUT
Hi-Z
V
IL
V
IH
t
OFF
Hi-Z
-0.6 µA, typ.
-20 pA, typ.
1 pA, typ.
V
IN
–
V
IN
+ = V
DD
/2
t
PLH
V
OUT
100 mV
V
OH
t
PHL
100 mV
I
SS
-20 pA, typ.
I
CS
1 pA, typ.
V
OL
V
OL
FIGURE 1-1:
Timing Diagram for the CS
Pin on the MCP6543.
FIGURE 1-2:
Diagram.
Propagation Delay Timing
2003 Microchip Technology Inc.
DS21696C-page 3
MCP6541/2/3/4
TEMPERATURE SPECIFICATIONS
Electrical Specifications:
Unless otherwise indicated, V
DD
= +1.6V to +5.5V and V
SS
= GND.
Parameters
Temperature Ranges
Specified Temperature Range
Operating Temperature Range
Storage Temperature Range
Thermal Package Resistances
Thermal Resistance, 5L-SC-70
Thermal Resistance, 5L-SOT-23
Thermal Resistance, 8L-PDIP
Thermal Resistance, 8L-SOIC
Thermal Resistance, 8L-MSOP
Thermal Resistance, 14L-PDIP
Thermal Resistance, 14L-SOIC
Thermal Resistance, 14L-TSSOP
Note:
θ
JA
θ
JA
θ
JA
θ
JA
θ
JA
θ
JA
θ
JA
θ
JA
—
—
—
—
—
—
—
—
331
256
85
163
206
70
120
100
—
—
—
—
—
—
—
—
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
T
A
T
A
T
A
-40
-40
-65
—
—
—
+85
+125
+150
°C
°C
°C
Note
Sym
Min
Typ
Max
Units
Conditions
The MCP6541/2/3/4 operates over this extended temperature range, but with reduced performance. In any
case, the Junction Temperature (T
J
) must not exceed the Absolute Maximum specification of +150°C.
1.2
Test Circuit Configuration
This test circuit configuration is used to determine the
AC and DC specifications.
V
DD
200 kΩ
200 kΩ
MCP654X
200 kΩ
200 kΩ
V
OUT
36 pF
V
IN
= V
SS
V
SS
= 0V
FIGURE 1-3:
AC and DC Test Circuit for
the Push-Pull Output Comparators.
DS21696C-page 4
2003 Microchip Technology Inc.
MCP6541/2/3/4
2.0
Note:
TYPICAL PERFORMANCE CURVES
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
Note:
Unless otherwise indicated, V
DD
= +1.6V to +5.5V, V
SS
= GND, T
A
= +25°C, V
IN
+ = V
DD
/2, V
IN–
= GND,
R
L
= 100 kΩ to V
DD
/2, and C
L
= 36 pF.
14%
Percentage of Occurrences
Percentage of Occurrences
12%
10%
8%
6%
4%
2%
0%
-7 -6 -5 -4 -3 -2 -1 0 1 2 3 4
Input Offset Voltage (mV)
5
6
7
1200 Samples
V
CM
= V
SS
18%
16%
14%
12%
10%
8%
6%
4%
2%
0%
1.6 2.0 2.4 2.8 3.2 3.6 4.0 4.4 4.8 5.2 5.6 6.0
Input Hysteresis Voltage (mV)
1200 Samples
V
CM
= V
SS
FIGURE 2-1:
Input Offset Voltage
Histogram at V
CM
= V
SS
.
16%
14%
12%
10%
8%
6%
4%
2%
0%
-14 -12 -10 -8 -6 -4 -2 0 2 4 6 8 10 12 14
Input Offset Voltage Drift (µV/°C)
1200 Samples
V
CM
= V
SS
FIGURE 2-4:
Input Hysteresis Voltage
Histogram at V
CM
= V
SS
.
26%
24%
22%
20%
18%
16%
14%
12%
10%
8%
6%
4%
2%
0%
Percentage of Occurrences
1200 Samples
V
CM
= V
SS
Percentage of Occurrences
T
A
= +25°C to +85°C
T
A
= -40°C to +25°C
2
3
4 5 6 7 8 9 10 11 12 13 14 15 16
Input Hysteresis Voltage Drift (µV/°C)
FIGURE 2-2:
Input Offset Voltage Drift
Histogram at V
CM
= V
SS
.
500
400
300
200
100
0
-100
-200
-300
-400
-500
V
CM
= V
SS
V
DD
= 1.6V
FIGURE 2-5:
Drift Histogram.
6.0
Input Hysteresis Voltage (mV)
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
-40
-20
Input Hysteresis Voltage
Input Offset Voltage (µV)
V
CM
= V
SS
V
DD
= 1.6V
V
DD
= 5.5V
V
DD
= 5.5V
-40
-20
0
20
40
60
Ambient Temperature (°C)
80
0
20
40
60
Ambient Temperature (°C)
80
FIGURE 2-3:
Input Offset Voltage vs.
Ambient Temperature at V
CM
= V
SS
.
FIGURE 2-6:
Input Hysteresis Voltage vs.
Ambient Temperature at V
CM
= V
SS
.
2003 Microchip Technology Inc.
DS21696C-page 5
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