2002 Microchip Technology Inc.
DS21696B-page 1
M
MCP6541/2/3/4
Features
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 s (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)
Typical Applications
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
Typical Application Circuit
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, sin-
gle-supply operation with greater than rail-to-rail input
operation. The push-pull output of the family supports
rail-to-rail output swing and interfaces with TTL/CMOS
logic. 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 fam-
ily operates with a single-supply voltage as low as 1.6V
and draws less than 1 A/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.
Package Types
V
REF
V
IN
V
OUT
MCP6541
V
DD
R
1
R
F
V
SS
5
4
3
1
2
Pin numbers reflect the SC-70-5 package.
+IN
-IN
MCP6541
V
SS
V
DD
OUT
1
2
3
4
8
7
6
5
-
+
NC
NC
NC
PDIP, SOIC, MSOP
4
1
2
3
-
+
5
SOT-23-5, SC-70-5
V
SS
OUT
+IN
V
DD
-IN
MCP6541
MCP6542
+INA
-INA
V
SS
1
2
3
4
8
7
6
5
-
OUTA
+ -
+
V
DD
OUTB
-INB
+INB
+IN
-IN
MCP6543
V
SS
V
DD
OUT
1
2
3
4
8
7
6
5
-
+
NC
CS
NC
PDIP, SOIC, MSOP
PDIP, SOIC, MSOP
MCP6544
+INA
-INA
V
SS
1
2
3
4
14
13
12
11
-
OUTA
+ -
+
V
DD
OUTD
-IND
+IND
10
9
8
5
6
7
OUTB
-INB
+INB
+INC
-INC
OUTC
+
-
-
+
PDIP, SOIC, TSSOP
Push-Pull Output Sub-Microamp Comparators
MCP6541/2/3/4
DS21696B-page 2
2002 Microchip Technology Inc.
1.0
ELECTRICAL
CHARACTERISTICS
1.1
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 .....................................-65C to +150C
Junction temperature .................................................. +150C
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. Expo-
sure to maximum rating conditions for extended periods may
affect device reliability.
PIN FUNCTION TABLE
DC CHARACTERISTICS
NAME
FUNCTION
+IN/+INA/+INB/+INC/+IND
Non-inverting Inputs
-IN/-INA/-INB/-INC/-IND
Inverting Inputs
V
DD
Positive Power Supply
V
SS
Negative Power Supply
OUT/OUTA/OUTB/OUTC/OUTD Outputs
CS
Chip Select
NC
Not Connected
Electrical Specifications: Unless otherwise indicated, V
DD
= +1.6V to +5.5V, V
SS
= GND, T
A
= 25C, V
IN+
= V
DD
/2, V
IN-
= V
SS
, and
R
L
= 100 k
to V
DD
/2. Refer to Figure 1-3.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Power Supply
Supply Voltage
V
DD
1.6
--
5.5
V
Quiescent Current per comparator
I
Q
0.3
0.6
1.0
A
I
OUT
= 0
Input
Input Voltage Range
V
CMR
V
SS
-0.3
--
V
DD
+0.3
V
Common Mode Rejection Ratio
CMRR
55
70
--
dB
V
DD
= 5V, V
CM
= -0.3V to 5.3V
Common Mode Rejection Ratio
CMRR
50
65
--
dB
V
DD
= 5V, V
CM
= 2.5V to 5.3V
Common Mode Rejection Ratio
CMRR
55
70
--
dB
V
DD
= 5V, V
CM
= -0.3V to 2.5V
Power Supply Rejection Ratio
PSRR
63
80
--
dB
V
CM
= V
SS
Input Offset Voltage
V
OS
-7.0
1.5
+7.0
mV
V
CM
= V
SS
(Note 1)
Drift with Temperature
V
OS
/
T
--
3
--
V/C T
A
= -40C to +85C, V
CM
= V
SS
Input Hysteresis Voltage
V
HYST
1.5
3.3
6.5
mV
V
CM
= V
SS
(Note 1)
Drift with Temperature
V
HYST
/
T
--
10
--
V/C T
A
= -40C to +25C, V
CM
= V
SS
Drift with Temperature
V
HYST
/
T
--
5
--
V/C T
A
= +25C to +85C, V
CM
= V
SS
Input Bias Current
I
B
--
1
--
pA
V
CM
=
V
SS
Over Temperature
I
B
--
--
100
pA
T
A
= -40C to +85C, V
CM
= V
SS
(Note 3)
Input Offset Current
I
OS
--
1
--
pA
V
CM
=
V
SS
Common Mode Input Impedance
Z
CM
--
10
13
||4
--
||pF
Differential Input Impedance
Z
DIFF
--
10
13
||2
--
||pF
Push Pull Output
High-Level Output Voltage
V
OH
V
DD
-0.2
--
--
V
I
OUT
= -2 mA, V
DD
= 5V
Low-Level Output Voltage
V
OL
--
--
V
SS
+0.2
V
I
OUT
= 2 mA, V
DD
= 5V
Short Circuit Current
I
SC
--
50
--
mA
(Note 2)
Note 1: 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.
2: Limit the output current to Absolute Maximum Rating of 30 mA.
3: Input bias current over temperature is not tested for SC-70-5 package.
2002 Microchip Technology Inc.
DS21696B-page 3
MCP6541/2/3/4
AC CHARACTERISTICS
SPECIFICATIONS FOR MCP6543 CHIP SELECT
FIGURE 1-1:
Timing Diagram for the CS
Pin on the MCP6543.
FIGURE 1-2:
Propagation Delay Timing
Diagram.
Electrical Specifications: Unless otherwise indicated, V
DD
= +1.6V to +5.5V, V
SS
= GND, T
A
= 25C, 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
Sym
Min
Typ
Max
Units
Conditions
Rise Time
t
R
--
0.85
--
s
Fall Time
t
F
--
0.85
--
s
Propagation Delay (High-to-Low)
t
PHL
--
4
8
s
Propagation Delay (Low-to-High)
t
PLH
--
4
8
s
Propagation Delay Skew
t
PDS
--
0.2
--
s
(Note 1)
Maximum Toggle Frequency
f
MAX
--
160
--
kHz
V
DD
= 1.6V
f
MAX
--
120
--
kHz
V
DD
= 5.5V
Input Noise Voltage
E
N
--
200
--
V
P-P
10 Hz to 100 kHz
Note 1: Propagation Delay Skew is defined as: t
PDS
= t
PLH
- t
PHL
.
Electrical Specifications: Unless otherwise indicated, V
DD
= +1.6V to +5.5V, V
SS
= GND, T
A
= 25C, V
IN+
= V
DD
/2, V
IN-
= V
SS
,
and C
L
= 36 pF. Refer to Figure 1-3.
Parameters
Sym
Min
Typ
Max
Units
Conditions
CS Low Specifications
CS Logic Threshold, Low
V
IL
V
SS
--
0.2V
DD
V
CS Input Current, Low
I
CSL
--
5.0
--
pA
CS = V
SS
CS High Specifications
CS Logic Threshold, High
V
IH
0.8V
DD
--
V
DD
V
CS Input Current, High
I
CSH
--
1
--
pA
CS = V
DD
CS Input High, V
DD
Current
I
DD
--
18
--
pA
CS = V
DD
CS Input High, GND Current
I
SS
--
-20
--
pA
CS = V
DD
Comparator Output Leakage
I
O(LEAK)
--
1
--
pA
V
OUT
= V
DD
CS Dynamic Specifications
CS Low to Comparator Output Low
Turn-on Time
t
ON
--
2
50
ms
CS = 0.2V
DD
to V
OUT
= V
DD
/2,
V
IN-
= V
DD
CS High to Comparator Output
High Z Turn-off Time
t
OFF
--
10
--
s
CS = 0.8V
DD
to V
OUT
= V
DD
/2,
V
IN-
= V
DD
CS Hysteresis
V
CS_HYST
--
0.6
--
V
V
DD
= 5V
V
IL
Hi-Z
t
ON
V
IH
CS
t
OFF
V
OUT
-20 pA, typ.
Hi-Z
I
SS
I
CS
1 pA, typ.
1 pA, typ.
-20 pA, typ.
-0.6 A, typ.
V
OL
t
PLH
V
OUT
V
IN-
100 mV
100 mV
t
PHL
V
OL
V
IN+
=V
DD
/2
V
OH
MCP6541/2/3/4
DS21696B-page 4
2002 Microchip Technology Inc.
TEMPERATURE SPECIFICATIONS
FIGURE 1-3:
DC Test Circuit for the Push-
Pull Output Comparators.
Electrical Specifications: Unless otherwise indicated, V
DD
= +1.6V to +5.5V and V
SS
= GND.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Temperature Ranges
Specified Temperature Range
T
A
-40
--
+85
C
Operating Temperature Range
T
A
-40
--
+125
C
Note
Storage Temperature Range
T
A
-65
--
+150
C
Thermal Package Resistances
Thermal Resistance, 5L-SC-70
JA
--
331
--
C/W
Thermal Resistance, 5L-SOT-23
JA
--
256
--
C/W
Thermal Resistance, 8L-PDIP
JA
--
85
--
C/W
Thermal Resistance, 8L-SOIC
JA
--
163
--
C/W
Thermal Resistance, 8L-MSOP
JA
--
206
--
C/W
Thermal Resistance, 14L-PDIP
JA
--
70
--
C/W
Thermal Resistance, 14L-SOIC
JA
--
120
--
C/W
Thermal Resistance, 14L-TSSOP
JA
--
100
--
C/W
Note:
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 +150C.
V
DD
V
SS
= 0V
200 k
200 k
200 k
200 k
V
OUT
V
IN
= V
SS
36 pF
MCP654X
2002 Microchip Technology Inc.
DS21696B-page 5
MCP6541/2/3/4
2.0
TYPICAL PERFORMANCE CURVES
Note: Unless otherwise indicated, V
DD
= +5.0V, V
SS
= GND, T
A
= 25C, V
IN+
= V
DD
/2, V
IN-
= GND, R
L
= 100 k
to
V
DD
/2, and C
L
= 36 pF.
FIGURE 2-1:
Histogram of Input Offset
Voltage with V
CM
= V
SS
.
FIGURE 2-2:
Histogram of Input Offset
Voltage Drift with V
CM
= V
SS
.
FIGURE 2-3:
Input Offset Voltage vs.
Ambient Temperature vs. Power Supply Voltage
with V
CM
= V
SS
.
FIGURE 2-4:
Histogram of Input
Hysteresis Voltage with V
CM
= V
SS
.
FIGURE 2-5:
Histogram of Input
Hysteresis Voltage Drift with Temperature =
-40C to 25C and 25C to 85C, V
CM
= V
SS
.
FIGURE 2-6:
Input Hysteresis Voltage vs.
Temperature vs. Power Supply Voltage with
V
CM
= V
SS
.
Note:
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.
0%
1%
2%
3%
4%
5%
6%
7%
8%
9%
10%
11%
12%
13%
14%
-7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7
Input Offset Voltage (mV)
Percentage of Occurrences
1200 Samples
V
CM
= V
SS
0%
1%
2%
3%
4%
5%
6%
7%
8%
9%
10%
11%
12%
13%
14%
15%
-14 -11
-8
-5
-2
1
4
7
10
13
Input Offset Voltage Drift (V/C)
Percentage of Occurrences
1200 Samples
V
CM
= V
SS
-500
-400
-300
-200
-100
0
100
200
300
400
500
-40
-20
0
20
40
60
80
Ambient Temperature (C)
Input Offset Voltage (V)
V
DD
= 1.6V
V
DD
= 5.5V
V
CM
= V
SS
0%
2%
4%
6%
8%
10%
12%
14%
16%
18%
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)
Percentage of Occurrences
1200 Samples
V
CM
= V
SS
0%
2%
4%
6%
8%
10%
12%
14%
16%
18%
20%
22%
24%
26%
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Input Hysteresis Voltage Drift (V/C)
Percentage of Occurrences
1200 Samples
V
CM
= V
SS
T
A
= +25C to +85C
T
A
= -40C to +25C
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
-40
-20
0
20
40
60
80
Ambient Temperature (C)
Input Hysteresis Voltage (mV
)
V
DD
= 1.6V
V
DD
= 5.5V
V
CM
= V
SS
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