2002-2022
Microchip Technology Inc. and its subsidiaries
DS20001714H-page 1
MCP6546/6R/6U/7/8/9
Features
• Low Quiescent Current: 600 nA/Comparator (typical)
• Rail-to-Rail Input: V
SS
- 0.3V to V
DD
+ 0.3V
• 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 Ranges:
- Industrial: -40°C to +85°C
- Extended: -40°C to +125°C
Typical Applications
• Laptop Computers
• Mobile Phones
• Metering Systems
• Handheld Electronics
• RC Timers
• Alarm and Monitoring Circuits
• Windowed Comparators
• Multivibrators
Related Devices
• CMOS/TTL-Compatible Output: MCP6541/2/3/4
Description
The Microchip MCP6546/6R/6U/7/8/9 family of com-
parators, 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 Microchip MCP6541/2/3/4 family of com-
parators has a push-pull output that supports rail-to-rail
output swing and interfaces with CMOS/TTL logic.
Note that SC-70-5 E-Temp parts are not available at
this release of the data sheet.
The MCP6546U SOT-23-5 is E-Temp only.
Package Types
V
IN
+
V
IN
–
MCP6546
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
V
DD
OUT
V
IN
+
V
SS
V
IN
–
MCP6546R MCP6547
V
INA
+
V
INA
–
V
SS
1
2
3
4
8
7
6
5
-
OUTA
+
-
+
V
DD
OUTB
V
INB
–
V
INB
+
V
IN
+
V
IN
–
MCP6548
V
SS
V
DD
OUT
1
2
3
4
8
7
6
5
-
+
NC
CS
NC
PDIP, SOIC, MSOP
PDIP, SOIC, MSOP
MCP6549
V
INA
+
V
INA
–
V
SS
1
2
3
4
14
13
12
11
-
OUTA
+
-
+
V
DD
OUTD
V
IND
–
V
IND
+
10
9
8
5
6
7
OUTB
V
INB
–
V
INB
+
V
INC
+
V
INC
–
OUTC
+
-
-
+
PDIP, SOIC, TSSOP
4
1
2
3
-
+
5
SC-70-5, SOT23-5
V
SS
OUT
V
IN
+
V
DD
V
IN
–
MCP6546
4
1
2
3
5
SC-70-5, SOT-23-5
V
SS
V
IN
+
V
IN
–
V
DD
OUT
MCP6546U
-
+
Open-Drain Output Sub-Microamp Comparators
