Datasheet

MAX931-MAX934
Ultra Low-Power, Low-Cost
Comparators with 2% Reference
6 _______________________________________________________________________________________
____________________________Typical Operating Characteristics (continued)
(V+ = 5V, V- = GND, T
A
= +25°C, unless otherwise noted.)
-2 2 10 18
RESPONSE TIME FOR VARIOUS
INPUT OVERDRIVES
0
4
MAX921/924-TOC13
RESPONSE TIME (µs)
OUTPUT VOLTAGE (V)
614
2
0
5
100
3
1
50mV
100mV
20mV
10mV
INPUT VOLTAGE (mV)
-2 2 10 18
RESPONSE TIME FOR VARIOUS
INPUT OVERDRIVES
0
4
MAX921/924-TOC14
RESPONSE TIME (µs)
OUTPUT VOLTAGE (V)
614
2
0
5
100
3
1
50mV
100mV
20mV
10mV
INPUT VOLTAGE (mV)
10
0.01
1.0 2.0 2.5
MAX934 RESPONSE TIME 
AT LOW SUPPLY VOLTAGES
0.1
1
MAX921/924-TOC15
SINGLE-SUPPLY VOLTAGE (V)
RESPONSE TIME (ms)
1.5
±20mV OVERDRIVE
±100mV 
OVERDRIVE
100
0.1
1.0 2.0 2.5
MAX934 OUTPUT DRIVE
AT LOW SUPPLY VOLTAGES
1
10
MAX921/924-TOC16
SINGLE-SUPPLY VOLTAGE (V)
CURRENT (mA)
1.5
SINK CURRENT AT V
OUT
= 0.4V
SOURCE CURRENT INTO 0.75V LOAD
200
0
0 1.0 3.0 5.0
SHORT-CIRCUIT SOURCE CURRENT 
vs. SUPPLY VOLTAGE
40
160
MAX121/124-TOC17
TOTAL SUPPLY VOLTAGE (V)
SOURCE CURRENT (mA)
2.0 4.0
120
80
20
60
180
140
100
OUT CONNECTED TO V-
20
0
010
SHORT-CIRCUIT SINK CURRENT 
vs. SUPPLY VOLTAGE
MAX121/124-TOC18
TOTAL SUPPLY VOLTAGE (V)
SINK CURRENT (mA)
5


10
OUT CONNECTED TO V+
GND CONNECTED TO V-
80
-80
010 30 50

HYSTERESIS CONTROL
-40
40
MAX921/924 TOC10
V
REF
-V
HYST
(mV)
IN+ – IN- (V)
20 40
0
60
-60
20
-20
NO CHANGE
OUTPUT LOW
OUTPUT HIGH
5.0
0
-0.3 -0.1 0.3

TRANSFER FUNCTION
1.0
4.0
MAX921/924-TOC11
IN+ INPUT VOLTAGE (mV)
OUTPUT VOLTAGE (V)
0.1
3.0
2.0
4.5
0.5
3.5
2.5
1.5
-0.2 0
0.2
100k
V
0
10µF
18
2
0 20 60 100
RESPONSE TIME vs.
LOAD CAPACITANCE
6
14
MAX921/924 TOC12
LOAD CAPACITANCE (nF)
RESPONSE TIME (µs)
40 80
10
16
4
12
8
V
OLH
V
OHL