MCP6546/6R/6U/7/8/9
Open-Drain Output Sub-Microamp Comparators
Features
• Low Quiescent Current: 600 nA/Comparator (typical)
• Rail-to-Rail Input: V
SS
- 0.3V to V
DD
+ 0.3V
Description
The Microchip Technology Inc. MCP6546/6R/6U/7/8/9
family of comparators, is offered in single (MCP6546,
MCP6546R, MCP6546U), single with chip select (CS)
(MCP6548), dual (MCP6547) and quad (MCP6549)
configurations. The outputs are open-drain and are
capable of driving heavy DC or capacitive loads.
These comparators are optimized for low power,
single-supply application with greater than rail-to-rail
input operation. The output limits supply current surges
and dynamic power consumption while switching. The
open-drain output of the MCP6546/6R/6U/7/8/9 family
can be used as a level-shifter for up to 10V using a pull-
up resistor. It can also be used as a wired-OR logic.
The internal Input hysteresis eliminates output switch-
ing due to internal noise voltage, reducing current draw.
These comparators operate with a single-supply
voltage as low as 1.6V and draw a quiescent current of
less than 1 µA/comparator.
The related MCP6541/2/3/4 family of comparators from
Microchip has a push-pull output that supports rail-to-
rail output swing and interfaces with CMOS/TTL logic.
* SC-70-5 E-Temp parts are not available at this
release of the data sheet.
MCP6546U SOT-23-5 is E-Temp only.
•
•
•
•
•
•
•
•
•
Open-Drain Output: V
OUT
≤
10V
Propagation Delay: 4 µs
(typical, 100 mV
Overdrive)
Wide Supply Voltage Range: 1.6V to 5.5V
Single Available in SOT-23-5, SC-70-5* Packages
Available in Single, Dual and Quad
Chip Select (CS) with MCP6548
Low Switching Current
Internal Hysteresis: 3.3 mV (typical)
Temperature Range:
- Industrial: -40°C to +85°C
- Extended: -40°C to +125°C
Typical Applications
•
•
•
•
•
•
•
•
Laptop Computers
Mobile Phones
Metering Systems
Hand-held Electronics
RC Timers
Alarm and Monitoring Circuits
Windowed Comparators
Multi-vibrators
Related Devices
• CMOS/TTL-Compatible Output: MCP6541/2/3/4
Package Types
MCP6546
PDIP, SOIC, MSOP
NC 1
V
IN
– 2
V
IN
+ 3
V
SS
4
-
+
8 NC
7 V
DD
6 OUT
5 NC
OUT 1
V
IN
+ 3
-
V
DD
2
+
MCP6546R
SOT-23-5
5 V
SS
4 V
IN
–
MCP6547
PDIP, SOIC, MSOP
OUTA 1
V
INA
– 2
V
INA
+ 3
V
SS
4
- +
+ -
8 V
DD
7 OUTB
6 V
INB
–
5 V
INB
+
MCP6549
PDIP, SOIC, TSSOP
OUTA 1
V
INA
– 2
V
INA
+ 3
V
DD
4
V
INB
+ 5
V
INB
– 6
- + +-
14 OUTD
- + + - 13 V
IND
–
12 V
IND
+
11 V
SS
10 V
INC
+
9 V
INC
–
8 OUTC
MCP6546
SC-70-5, SOT23-5
OUT 1
V
IN
+ 3
-
V
SS
2
+
5 V
DD
4 V
IN
–
MCP6546U
SC-70-5, SOT-23-5
V
SS
2
V
IN
– 3
-
+
V
IN
+ 1
5 V
DD
4 OUT
MCP6548
PDIP, SOIC, MSOP
NC 1
V
IN
– 2
V
IN
+ 3
V
SS
4
-
+
8 CS
7 V
DD
6 OUT
5 NC
OUTB 7
©
2002-2012 Microchip Technology Inc.
DS21714G-page 1
MCP6546/6R/6U/7/8/9
1.0
ELECTRICAL
CHARACTERISTICS
† Notice:
Stresses above those listed under “Absolute
Maximum Ratings” 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 rat-
ing conditions for extended periods may affect device
reliability.
††
See
Section 4.1.2 “Input Voltage and Current
Limits”
Absolute Maximum Ratings †
V
DD
- V
SS
.........................................................................7.0V
Open-Drain Output.............................................. V
SS
+ 10.5V
Analog Input (V
IN
+, V
IN
-)††............. V
SS
- 1.0V to V
DD
+ 1.0V
All Other 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) .....................................2 kV;200V (MCP6546U)
(HBM;MM) ................................ 4 kV; 200V (all other parts)
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
, R
PU
= 2.74 kΩ to V
PU
= V
DD
(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
Linear Temp. Co.
Quadratic Temp. Co.
Input Bias Current
At Temperature (I-Temp parts)
At Temperature (E-Temp parts)
Input Offset Current
Note 1:
2:
3:
4:
V
CMR
CMRR
CMRR
CMRR
PSRR
V
OS
ΔV
OS
/ΔT
A
V
HYST
TC
1
TC
2
I
B
I
B
I
B
I
OS
V
SS
−
0.3
55
50
55
63
-7.0
—
1.5
—
—
—
—
—
—
—
70
65
70
80
±1.5
±3
3.3
6.7
-0.035
1
25
1200
±1
V
DD
+ 0.3
—
—
—
—
+7.0
—
6.5
—
—
—
100
5000
—
V
dB
dB
dB
dB
mV
mV
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)
V
DD
I
Q
1.6
0.3
—
0.6
5.5
1
V
µA
V
PU
≥
V
DD
I
OUT
= 0
Sym
Min
Typ
Max
Units
Conditions
µV/°C T
A
= -40°C to +125°C, V
CM
= V
SS
µV/°C T
A
= -40°C to +125°C, V
CM
= V
SS
(Note
2)
µV/°C
2
T
A
= -40°C to +125°C, V
CM
= V
SS
(Note
2)
pA
pA
pA
pA
V
CM
= V
SS
T
A
= +85°C, V
CM
= V
SS
(Note
3)
T
A
= +125°C, V
CM
= V
SS
(Note
3)
V
CM
= V
SS
The input offset voltage is the center of the input-referred trip points. The input hysteresis is the difference
between the input-referred trip points.
V
HYST
at differential temperatures is estimated using:
V
HYST
(T
A
) = V
HYST
+ (T
A
-25°C) TC
1
+ (T
A
- 25°C)
2
TC
2
.
Input bias current at temperature is not tested for the SC-70-5 package.
Do not short the output above V
SS
+ 10V. Limit the output current to Absolute Maximum Rating of 30 mA.
The minimum V
PU
test limit was V
DD
before Dec. 2004 (week code 52).
DS21714G-page 2
©
2002-2012 Microchip Technology Inc.
MCP6546/6R/6U/7/8/9
DC CHARACTERISTICS (CONTINUED)
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
, R
PU
= 2.74 kΩ to V
PU
= V
DD
(Refer to
Figure 1-3).
Parameters
Common Mode Input Impedance
Differential Input Impedance
Open-Drain Output
Output Pull-Up Voltage
High-Level Output Current
Low-Level Output Voltage
Short-Circuit Current
Output Pin Capacitance
Note 1:
2:
3:
4:
V
PU
I
OH
V
OL
I
SC
I
SC
C
OUT
1.6
-100
V
SS
—
–
—
—
—
—
±1.5
30
8
10
—
V
SS
+ 0.2
—
—
—
V
nA
V
mA
mA
pF
(Note
4)
V
DD
= 1.6V to 5.5V, V
PU
= 10V
(Note
4)
I
OUT
= 2 mA, V
PU
= V
DD
= 5V
V
PU
= V
DD
= 1.6V
(Note
4)
V
PU
= V
DD
= 5.5V
(Note
4)
Sym
Z
CM
Z
DIFF
Min
—
—
Typ
10
13
||4
10
13
||2
Max
—
—
Units
Ω||pF
Ω||pF
Conditions
The input offset voltage is the center of the input-referred trip points. The input hysteresis is the difference
between the input-referred trip points.
V
HYST
at differential temperatures is estimated using:
V
HYST
(T
A
) = V
HYST
+ (T
A
-25°C) TC
1
+ (T
A
- 25°C)
2
TC
2
.
Input bias current at temperature is not tested for the SC-70-5 package.
Do not short the output above V
SS
+ 10V. Limit the output current to Absolute Maximum Rating of 30 mA.
The minimum V
PU
test limit was V
DD
before Dec. 2004 (week code 52).
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, R
PU
= 2.74 kΩ to V
PU
= V
DD
, and C
L
= 36 pF
(Refer to
Figure 1-2
and
Figure 1-3).
Parameters
Fall Time
Propagation Delay (High-to-Low)
Propagation Delay (Low-to-High)
Propagation Delay Skew
Maximum Toggle Frequency
Input Noise Voltage
Note 1:
2:
Sym
t
F
t
PHL
t
PLH
t
PDS
f
MAX
f
MAX
E
ni
Min
—
—
—
—
—
—
—
Typ
0.7
4.0
3.0
-1.0
225
165
200
Max
—
8.0
8.0
—
—
—
—
Units
µs
µs
µs
µs
kHz
kHz
(Note
1)
(Notes
1
and
2)
V
DD
= 1.6V
V
DD
= 5.5V
(Note
1)
Conditions
µV
P-P
10 Hz to 100 kHz
t
R
and t
PLH
depend on the load (R
L
and C
L
); these specifications are valid for the indicated load only.
Propagation Delay Skew is defined as: t
PDS
= t
PLH
- t
PHL
.
©
2002-2012 Microchip Technology Inc.
DS21714G-page 3
MCP6546/6R/6U/7/8/9
MCP6548 CHIP SELECT (CS) 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
, R
PU
= 2.74 kΩ to V
PU
= V
DD
, 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
CS
V
IL
t
ON
V
OUT
High-Z
t
ON
t
OFF
V
CS_HYST
V
IH
t
OFF
High-Z
—
—
—
2
10
0.6
50
—
—
V
IN
–
V
IN
+ = V
DD
/2
t
PLH
V
OUT
100 mV
V
OH
V
OL
t
PHL
ms
µs
V
CS = 0.2V
DD
to V
OUT
= V
DD
/2,
V
IN
– = V
DD
CS = 0.8V
DD
to V
OUT
= V
DD
/2,
V
IN
– = V
DD
V
DD
= 5V
V
IH
I
CSH
I
DD
I
SS
I
O(LEAK)
0.8 V
DD
—
—
—
—
—
1
18
-20
1
V
DD
—
—
—
—
V
pA
pA
pA
pA
CS = V
DD
CS = V
DD
CS = V
DD
V
OUT
= V
SS
+10V, CS = V
DD
V
IL
I
CSL
V
SS
—
—
5
0.2
V
DD
—
V
pA
CS = V
SS
Sym
Min
Typ
Max
Units
Conditions
100 mV
I
SS
-20 pA (typ.)
I
CS
1 pA (typ.)
-0.6 µA (typ.)
5 pA (typ.)
-20 pA (typ.)
1 pA (typ.)
V
OL
FIGURE 1-1:
Timing Diagram for the CS
pin on the MCP6548.
FIGURE 1-2:
Diagram.
Propagation Delay Timing
DS21714G-page 4
©
2002-2012 Microchip Technology Inc.
MCP6546/6R/6U/7/8/9
TEMPERATURE CHARACTERISTICS
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-MSOP
Thermal Resistance, 8L-PDIP
Thermal Resistance, 8L-SOIC
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
220.7
211
89.3
149.5
70
95.3
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 MCP6546/6R/6U/7/8/9 I-temp family 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.
1.1
Test Circuit Configuration
This test circuit configuration is used to determine the
AC and DC specifications.
V
DD
V
PU
= V
DD
200 kΩ
200 kΩ
100 kΩ
V
IN
= V
SS
V
SS
= 0V
MCP654X
R
PU
=
(2 mA)/ V
DD
V
OUT
36 pF
FIGURE 1-3:
AC and DC Test Circuit for
the Open-Drain Output Comparators.
©
2002-2012 Microchip Technology Inc.
DS21714G-page 5
