Datasheet
© 2002-2011 Microchip Technology Inc. DS21696H-page 15
MCP6541/1R/1U/2/3/4
3.0 PIN DESCRIPTIONS
Descriptions of the pins are listed in Table 3-1.
3.1 Analog Inputs
The comparator non-inverting and inverting inputs are
high-impedance CMOS inputs with low bias currents.
3.2 CS Digital Input
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.
3.4 Power Supply (V
SS
and V
DD
)
The positive power supply pin (V
DD
) is 1.6V to 5.5V
higher than the negative power supply pin (V
SS
). For
normal operation, the other pins are at voltages
between V
SS
and V
DD
.
Typically, these parts are used in a single (positive)
supply configuration. In this case, V
SS
is connected to
ground and V
DD
is connected to the supply. V
DD
will
need a local bypass capacitor (typically 0.01 µF to
0.1µF) within 2mm of the V
DD
pin. These can share a
bulk capacitor with nearby analog parts (within
100 mm), but it is not required.
TABLE 3-1: PIN FUNCTION TABLE
MCP6541
PDIP,
SOIC,
MSOP
MCP6541
SOT-23-5,
SC-70-5
MCP6541R
MCP6541U
SOT-23-5
SC-70-5
MCP6542
MCP6543
MCP6544
Symbol Description
6 1 1 4 1 6 1 OUT, OUTA Digital Output (comparator A)
2443222V
IN
–, V
INA
– Inverting Input (comparator A)
3331333V
IN
+, V
INA
+ Non-inverting Input (comparator A)
7525874V
DD
Positive Power Supply
————5—5V
INB
+ Non-inverting Input (comparator B)
————6—6V
INB
– Inverting Input (comparator B)
— — — — 7 — 7 OUTB Digital Output (comparator B)
— — — — — — 8 OUTC Digital Output (comparator C)
——————9V
INC
– Inverting Input (comparator C)
——————10V
INC
+ Non-inverting Input (comparator C)
42524411V
SS
Negative Power Supply
——————12V
IND
+ Non-inverting Input (comparator D)
——————13V
IND
– Inverting Input (comparator D)
— — — — — — 14 OUTD Digital Output (comparator D)
—————8—CS
Chip Select
1, 5, 8 — — — — 1, 5 — NC No Internal Connection