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MCP6566/6R/6U/7/9
1.8V Low-Power Open-Drain Output Comparator
Features:
• Propagation Delay at 1.8VDD:
- 56 ns (typical) High-to-Low
• Low Quiescent Current: 100 µA (typical)
• Input Offset Voltage: ±3 mV (typical)
• Rail-to-Rail Input: VSS - 0.3V to VDD + 0.3V
• Open-Drain Output
• Wide Supply Voltage Range: 1.8V to 5.5V
• Available in Single, Dual and Quad
• Packages: SC70, SOT-23-5, SOIC, MSOP,
TSSOP
Typical Applications:
• Laptop Computers
• Mobile Phones
• Hand-held Electronics
• RC Timers
• Alarm and Monitoring Circuits
• Window Comparators
• Multi-vibrators
Design Aids:
• Microchip Advanced Part Selector (MAPS)
• Analog Demonstration and Evaluation Boards
• Application Notes
Related Device:
• Push-Pull Output: MCP6561/1R/1U/2/4
Typical Application
+3VPU
VIN +5VDD
VDD MCP656X
VOUT
R2
R3 RF
Description:
The Microchip Technology, Inc. MCP6566/6R/6U/7/9
families of open-drain output comparators are offered
in single, dual and quad configurations.
These comparators are optimized for low-power 1.8V,
single-supply applications with greater than rail-to-rail
input operation. The internal input hysteresis eliminates
output switching due to internal input noise voltage,
reducing current draw. The open-drain output of the
MCP6566/6R/6U/7/9 family requires a pull-up resistor
and it supports pull-up voltages above and below VDD,
which can be used to level shift. The output toggle
frequency can reach a typical of 4 MHz (typical) while
limiting supply current surges and dynamic power
consumption during switching.
This family operates with single supply voltage of 1.8V
to 5.5V while drawing less than 100 µA/comparator of
quiescent current (typical).
Package Types
MCP6566
MCP6567
SOT-23-5, SC70-5
SOIC, MSOP
OUT 1
VSS 2
+IN 3
5 VDD OUTA 1
-INA 2
4 -IN +INA 3
-+
+-
8 VDD
7 OUTB
6 -INB
VSS 4
5 +INB
MCP6566R
MCP6569
SOT-23-5
SOIC, TSSOP
OUT 1
VDD 2
+IN 3
5 VSS
4 -IN
MCP6566U
SOT-23-5
OUTA 1
-INA 2
+INA 3
VDD 4
+INB 5
-INB 6
14 OUTD
- + + - 13 -IND
12 +IND
11 VSS
10 +INC
- + + - 9 -INC
VIN+ 1
VSS 2
VIN– 3
5 VDD OUTB 7
4 OUT
8 OUTC
2011 Microchip Technology Inc.
DS22143C-page 1

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MCP6566/6R/6U/7/9
NOTES:
DS22143C-page 2
2011 Microchip Technology Inc.

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MCP6566/6R/6U/7/9
1.0 ELECTRICAL
CHARACTERISTICS
1.1 Maximum Ratings*
VDD - VSS ....................................................................... 6.5V
Open-Drain Output.............................................VSS + 10.5V
All other inputs and outputs...........VSS – 0.3V to VDD + 0.3V
Difference Input voltage ......................................|VDD - VSS|
Output Short Circuit Current .................................... ±25 mA
Current at Input Pins .................................................. ±2 mA
Current at Output and Supply Pins .......................... ±50 mA
Storage temperature ................................... -65°C to +150°C
Ambient temp. with power applied .............. -40°C to +125°C
Junction temp............................................................ +150°C
ESD protection on all pins (HBM/MM)4 kV/300V
*Notice: Stresses above those listed under “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. Expo-
sure to maximum rating conditions for extended periods may
affect device reliability.
DC CHARACTERISTICS
Electrical Characteristics: Unless otherwise indicated: VDD = +1.8V to +5.5V, VSS = GND, TA = +25°C, VIN+ = VDD/2, VIN- = VSS,
and RPull-Up = 20 kto VPU = VDD (see Figure 1-1).
Parameters
Symbol Min Typ Max Units
Conditions
Power Supply
Supply Voltage
VDD
1.8 —
5.5
V
Quiescent Current per comparator
IQ
60 100 130
µA IOUT = 0
Power Supply Rejection Ratio
Input
PSRR 63 70 — dB VCM = VSS
Input Offset Voltage
Input Offset Drift
Input Offset Current
VOS -10 3 +10 mV VCM = VSS (Note 1)
VOS/T
2
— µV/°C VCM = VSS
IOS
1 —
pA VCM = VSS
Input Bias Current
IB — 1 — pA TA = +25°C, VIN- = VDD/2
— 60 — pA TA = +85°C, VIN- = VDD/2
Input Hysteresis Voltage
VHYST
— 1500 5000
1.0 —
5.0
pA TA = +125°C, VIN- = VDD/2
mV VCM = VSS (Notes 1, 2)
Input Hysteresis Linear Temp. Co.
Input Hysteresis Quadratic Temp. Co.
TC1
TC2
— 10
— µV/°C
— 0.3 — µV/°C2
Common-Mode Input Voltage Range
VCMR VSS0.2 — VDD+0.2
V VDD = 1.8V
VSS0.3 — VDD+0.3
V VDD = 5.5V
Common-Mode Rejection Ratio
CMRR 54 66 — dB VCM= -0.3V to VDD+0.3V, VDD = 5.5V
50 63 — dB VCM= VDD/2 to VDD+0.3V, VDD = 5.5V
54 65 — dB VCM= -0.3V to VDD/2, VDD = 5.5V
Common Mode Input Impedance
Differential Input Impedance
ZCM
ZDIFF
— 1013||4
— 1013||2
||pF
||pF
Note 1: 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.
2: VHYST at different temperatures is estimated using VHYST (TA) = VHYST @ +25°C + (TA - 25°C) TC1 + (TA - 25°C)2 TC2.
3: Limit the output current to Absolute Maximum Rating of 50 mA.
4: The pull-up voltage for the open drain output VPULL_UP can be as high as the absolute maximum rating of 10.5V. In this
case, IOH_leak can be higher than 1 µA (see Figure 2-30).
2011 Microchip Technology Inc.
DS22143C-page 3

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MCP6566/6R/6U/7/9
DC CHARACTERISTICS (CONTINUED)
Electrical Characteristics: Unless otherwise indicated: VDD = +1.8V to +5.5V, VSS = GND, TA = +25°C, VIN+ = VDD/2, VIN- = VSS,
and RPull-Up = 20 kto VPU = VDD (see Figure 1-1).
Parameters
Symbol Min Typ Max Units
Conditions
Push-Pull Output
Pull-up Voltage
High Level Output Voltage
High Level Output Current leakage
VPULL_UP
VOH
IOH_leak
1.6
— 5.5
V
— VPULL_UP V (see Figure 1-1) (Notes 3, 4)
— 1 µA Note 4
Low Level Output Voltage
Short Circuit Current (Notes 3)
VOL — — 0.6 V IOUT = 3 mA/8 mA @ VDD = 1.8V/5.5V
ISC
— ±30
mA Not to exceed Absolute Max. Rating
Output Pin Capacitance
COUT
8
pF
Note 1: 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.
2: VHYST at different temperatures is estimated using VHYST (TA) = VHYST @ +25°C + (TA - 25°C) TC1 + (TA - 25°C)2 TC2.
3: Limit the output current to Absolute Maximum Rating of 50 mA.
4: The pull-up voltage for the open drain output VPULL_UP can be as high as the absolute maximum rating of 10.5V. In this
case, IOH_leak can be higher than 1 µA (see Figure 2-30).
AC CHARACTERISTICS
Electrical Characteristics: Unless otherwise indicated,: Unless otherwise indicated,: VDD = +1.8V to +5.5V, VSS = GND,
TA = +25°C, VIN+ = VDD/2, VIN- = VSS, RPull-Up = 20 kto VPU = VDD, and CL = 25 pf (see Figure 1-1).
Parameters
Symbol Min Typ Max Units
Conditions
Propagation Delay
High-to-Low,100 mV Overdrive
Output
tPHL
— 56 80
ns VCM= VDD/2, VDD = 1.8V
— 34 80
ns VCM= VDD/2, VDD = 5.5V
Fall Time
tF
— 20 —
ns
Maximum Toggle Frequency
fTG — 4 — MHz VDD = 5.5V
Input Voltage Noise
Note 1: ENI is based on SPICE simulation.
ENI
— 2 — MHz VDD = 1.8V
— 350 — µVP-P 10 Hz to 10 MHz (Note 1)
2: Rise time tR and tPLH depend on the load (RL and CL). These specification are valid for the specified load only.
TEMPERATURE SPECIFICATIONS
Electrical Characteristics: Unless otherwise indicated: VDD = +1.8V to +5.5V and VSS = GND.
Parameters
Symbol Min Typ Max Units
Temperature Ranges
Specified Temperature Range
Operating Temperature Range
Storage Temperature Range
Thermal Package Resistances
TA -40 — +125 °C
TA -40 — +125 °C
TA -65 — +150 °C
Thermal Resistance, SC70-5
Thermal Resistance, SOT-23-5
Thermal Resistance, 8L-MSOP
Thermal Resistance, 8L-SOIC
Thermal Resistance, 14L-SOIC
Thermal Resistance, 14L-TSSOP
JA — 331 — °C/W
JA
— 220.7 —
°C/W
JA — 211 — °C/W
JA
— 149.5 —
°C/W
JA
— 95.3 —
°C/W
JA — 100 — °C/W
Conditions
DS22143C-page 4
2011 Microchip Technology Inc.

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1.2 Test Circuit Configuration
This test circuit configuration is used to determine the
AC and DC specifications.
VDD MCP656X
VPU = VDD
200 k
200 k
IOUT
RPU
20 k
VOUT
25 pF
VIN = VSS
VSS = 0V
FIGURE 1-1:
AC and DC Test Circuit for
the Open-Drain Output Comparators.
MCP6566/6R/6U/7/9
2011 Microchip Technology Inc.
DS22143C-page 5