MCP6564T-E/ST Microchip Technology, MCP6564T-E/ST Datasheet - Page 16

• Manufacturer Part Number: MCP6564T-E/ST
• Description: IC COMP QUAD 1.8V PP 14-TSSOP
• Manufacturer: Microchip Technology
• Type: General Purposer

Specifications of MCP6564T-E/ST

• Package / Case: 14-TSSOP (0.173", 4.40mm Width)
• Number Of Elements: 4
• Output Type: CMOS, Push-Pull, Rail-to-Rail, TTL
• Voltage - Supply: 1.8 V ~ 5.5 V
• Mounting Type: Surface Mount
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MCP6564T-E/STTR

MCP6561/1R/1U/2/4
It is also possible to connect the diodes to the left of the
resistors R
the diodes D
mechanism. The resistor then serves as in-rush current
limiter; the DC current into the input pins (V
V
A significant amount of current can flow out of the
inputs when the common mode voltage (V
ground (V
high impedance may need to limit the usable voltage
range.
4.1.3
The MCP6561/1R/1U/2/4 comparator family uses
CMOS transistors at the input. They are designed to
prevent phase inversion when the input pins exceed
the supply voltages.
exceeding both supplies with no resulting phase
inversion.
4.2
The push-pull output is designed to be compatible with
CMOS and TTL logic, while the output transistors are
configured to give rail-to-rail output performance. They
are driven with circuitry that minimizes any switching
current (shoot-through current from supply-to-supply)
when the output is transitioned from high-to-low, or
from low-to-high (see
more information).
4.3
Greater flexibility in selecting hysteresis (or input trip
points) is achieved by using external resistors.
Hysteresis reduces output chattering when one input is
slowly moving past the other. It also helps in systems
where it is best not to cycle between high and low
states too frequently (e.g., air conditioner thermostatic
control). Output chatter also increases the dynamic
supply current.
DS22139B-page 16
IN
–) should be very small.
Push-Pull Output
Externally Set Hysteresis
SS
1
PHASE REVERSAL
and R
1
); see
and D
2
. In this case, the currents through
Figure
2
Figure 2-3
need to be limited by some other
Figure 2-15
2-32. Applications that are
shows an input voltage
and
Figure 2-18
CM
) is below
IN
+ and
for
4.3.1
Figure 4-4
supply applications using just two resistors. The
resulting hysteresis diagram is shown in
FIGURE 4-4:
Hysteresis for Single-Supply.
FIGURE 4-5:
Non-Inverting Circuit.
The trip points for
EQUATION 4-1:
Where:
V
V
V
V
V
OH
DD
OL
SS
V
V
IN
V
TLH
THL
SS
V
V THL
V TLH
REF
High-to-Low
V
OUT
shows a non-inverting circuit for single-
NON-INVERTING CIRCUIT
=
=
R
=
=
1
Figure 4-4
V REF 1
V REF 1
trip voltage from low to high
trip voltage from high to low
V
THL
Non-Inverting Circuit with
Hysteresis Diagram for the
MCP656X
© 2009 Microchip Technology Inc.
+
-
⎛
⎜
⎝
⎛
⎜
⎝
V
+
V
+
TLH
DD
------ -
R F
------ -
R F
R 1
and
R 1
⎞
⎟
⎠
⎞
⎟
⎠
Low-to-High
R
Figure 4-5
–
–
F
V OH
V OL
⎛
⎜
⎝
⎛
⎜
⎝
Figure
------ -
R F
V
R 1
------ -
R F
R 1
DD
⎞
⎟
⎠
⎞
⎟
⎠
are:
V
OUT
4-5.
V
IN