MAX919ESA Maxim Integrated Products, MAX919ESA Datasheet - Page 9

• Manufacturer Part Number: MAX919ESA
• Description: Comparator ICs SOT23, 1.8V, 380nA C omparator with Push-
• Manufacturer: Maxim Integrated Products

The MAX917/MAX918 feature an on-board 1.245V
±1.5% reference, yet draw an ultra-low supply current
of 750nA. The MAX919/MAX920 (without reference)
consume just 380nA of supply current. All four devices
are guaranteed to operate down to +1.8V. Their com-
mon-mode input voltage range extends 200mV
beyond-the-rails. Internal hysteresis ensures clean out-
put switching, even with slow-moving input signals.
Large internal output drivers allow rail-to-rail output
swing with up to ±8mA loads.
The output stage employs a unique design that mini-
mizes supply-current surges while switching, virtually
eliminating the supply glitches typical of many other
comparators. The MAX917/MAX919 have a push-pull
SOT23-5
MAX917/MAX918
—
—
1
2
3
4
5
SOT23, 1.8V, Nanopower, Beyond-the-Rails
1, 5, 8
IN+
REF
SO
—
6
4
3
2
7
_______________________________________________________________________________________
PIN
Detailed Description
SOT23-5
1.245V
MAX919/MAX920
V
Comparators With/Without Reference
CC
REF
—
—
1
2
3
4
5
V
EE
MAX917
MAX918
1, 5, 8
SO
—
6
4
3
2
7
OUT
NAME
OUT
N.C.
REF
V
V
IN+
IN-
CC
EE
Comparator Output
Negative Supply Voltage
Comparator Noninverting Input
Comparator Inverting Input
1.245V Reference Output and Comparator Inverting Input
Positive Supply Voltage
No Connection. Not internally connected.
output stage that sinks as well as sources current. The
MAX918/MAX920 have an open-drain output stage that
can be pulled beyond V
6V above V
implementing wire-ORed output logic functions.
The input common-mode voltage range extends from
V
at any differential input voltage within these limits. Input
bias current is typically ±0.15nA if the input voltage is
between the supply rails. Comparator inputs are pro-
tected from overvoltage by internal ESD protection
diodes connected to the supply rails. As the input volt-
age exceeds the supply rails, these ESD protection
diodes become forward biased and begin to conduct.
EE
- 0.2V to V
IN+
IN-
EE
. These open-drain versions are ideal for
CC
+ 0.2V. These comparators operate
FUNCTION
Functional Diagrams
V
V
CC
EE
CC
MAX919
MAX920
to an absolute maximum of
Input Stage Circuitry
Pin Description
OUT
9