MCP6541/1R/1U/2/3/4
3.0
PIN DESCRIPTIONS
Descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
PIN FUNCTION TABLE
MCP6541
(PDIP,
SOIC,
MCP6541
(SOT-23-5,
MSOP)
SC-70-5)
Symbol
Description
6
2
1
1
4
1
2
6
2
1
2
OUT, OUTA Digital Output (comparator A)
VIN–, VINA– Inverting Input (comparator A)
VIN+, VINA+ Non-inverting Input (comparator A)
4
4
1
3
3
3
3
3
3
3
7
5
2
5
8
7
4
VDD
Positive Power Supply
—
—
—
—
—
—
4
—
—
—
—
—
—
2
—
—
—
—
—
—
5
—
—
—
—
—
—
2
5
—
—
—
—
—
—
4
5
VINB
+
Non-inverting Input (comparator B)
Inverting Input (comparator B)
Digital Output (comparator B)
Digital Output (comparator C)
Inverting Input (comparator C)
Non-inverting Input (comparator C)
Negative Power Supply
6
6
VINB
–
7
7
OUTB
OUTC
—
—
—
4
8
9
VINC
–
+
10
11
12
13
14
—
—
VINC
VSS
—
—
—
—
1, 5, 8
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
8
VIND
VIND
+
Non-inverting Input (comparator D)
Inverting Input (comparator D)
Digital Output (comparator D)
Chip Select
–
OUTD
CS
1, 5
NC
No Internal Connection
3.1
Analog Inputs
3.4
Power Supply (VSS and VDD)
The comparator non-inverting and inverting inputs are
high-impedance CMOS inputs with low bias currents.
The positive power supply pin (VDD) is 1.6V to 5.5V
higher than the negative power supply pin (VSS). For
normal operation, the other pins are at voltages
between VSS and VDD
.
3.2
CS Digital Input
Typically, these parts are used in a single (positive)
supply configuration. In this case, VSS is connected to
ground and VDD is connected to the supply. VDD will
need a local bypass capacitor (typically 0.01 µF to
0.1 µF) within 2 mm of the VDD pin. These can share a
bulk capacitor with nearby analog parts (within
100 mm), but it is not required.
This is a CMOS, Schmitt-triggered input that places the
part into a low power mode of operation.
3.3
Digital Outputs
The comparator outputs are CMOS, push-pull digital
outputs. They are designed to be compatible with
CMOS and TTL logic and are capable of driving heavy
DC or capacitive loads.
© 2006 Microchip Technology Inc.
DS21696E-page 13
MICROCHIP [ MICROCHIP ]
