MAX965 데이터 시트보기 (PDF) - Maxim Integrated
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MAX965 Datasheet PDF : 12 Pages
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Single/Dual/Quad, Micropower,
Ultra-Low-Voltage, Rail-to-Rail I/O Comparators
________________________________________________Pin Descriptions (continued)
MAX969/MAX970
PIN
MAX969
MAX970
SO
QSOP
NAME
FUNCTION
1
1
1
OUTB
Comparator B Open-Drain Output
2
2
2
OUTA
Comparator A Open-Drain Output
3
3
3
VCC
Positive Supply Voltage, +1.6V to +5.5V
4
4
4
INA-
Comparator A Inverting Input
5
5
5
INA+
Comparator A Noninverting Input
6
6
6
INB-
Comparator B Inverting Input
7
7
7
INB+
Comparator B Noninverting Input
—
—
8, 9
N.C.
No Connection. Not internally connected.
8
—
—
REF
Internal Reference Output. Typically 1.235V with respect to GND.
9
—
—
HYST
Hysteresis Input. Connect to REF if not used. Input voltage range is
from (VREF - 50mV) to VREF.
10
8
10
INC-
Comparator C Inverting Input
11
9
11
INC+
Comparator C Noninverting Input
12
10
12
IND-
Comparator D Inverting Input
13
11
13
IND+
Comparator D Noninverting Input
14
12
14
GND
Ground
15
13
15
OUTD
Comparator D Open-Drain Output
16
14
16
OUTC
Comparator C Open-Drain Output
_______________Detailed Description
The MAX965–MAX970 single/dual/quad, micropower,
ultra-low-voltage comparators feature Rail-to-Rail®
inputs and outputs and an internal 1.235V ±1.5%
bandgap reference. These devices operate from a sin-
gle +1.6V to +5.5V supply voltage range, and consume
less than 5µA supply current per comparator over the
extended temperature range. Internal hysteresis is pro-
grammable up to ±50mV using two external resistors
and the device’s internal reference. The rail-to-rail input
common-mode voltage range and the open-drain out-
puts allow easy voltage-level conversion for multivolt-
age systems. All inputs and outputs can tolerate a
continuous short-circuit fault condition to either rail.
tor configured as a dual voltage monitor with common
hysteresis adjustment and a reference output. The dual
MAX968 is similar to the MAX967, but is configured as
a window comparator. The MAX969 is a quad com-
parator with a common hysteresis adjustment and a ref-
erence output pin. The MAX970 is a quad comparator
without a reference and without hysteresis adjustment.
(See Functional Diagrams and Selector Guide.)
Comparator Input
The MAX965–MAX970 have a -0.25V to VCC input com-
mon-mode range. Both comparator inputs may operate
at any differential voltage within the common-mode
voltage range, and the comparator displays the correct
output logic state.
The MAX965 is a single comparator with adjustable
hysteresis and a reference output pin. The MAX966 is a
dual comparator without the reference and without
adjustable hysteresis. The MAX967 is a dual compara-
Low-Voltage Operation: VCC Down to 1V
The minimum operating voltage is 1.6V. As the supply
voltage falls below 1.6V, performance degrades
and supply current falls. The reference does not
_______________________________________________________________________________________ 7
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