Owner's manual
MAX971–MAX974/MAX981–MAX984
Ultra-Low-Power, Open-Drain,
Single/Dual-Supply Comparators
4 _______________________________________________________________________________________
__________________________________________Typical Operating Characteristics
(V+ = 5V, V- = GND, T
A
= +25°C, unless otherwise noted.)
0
020
OUTPUT VOLTAGE LOW
vs. LOAD CURRENT
0.5
2.5
MAX971/4-TOC1
LOAD CURRENT (mA)
V
OL
(V)
12
1.5
1.0
48 16
2.0
V+ = 5V
V+ = 3V
1.155
0 5 15 25
REFERENCE OUTPUT VOLTAGE vs.
OUTPUT LOAD CURRENT
1.165
1.185
MAX971/4-TOC2
OUTPUT LOAD CURRENT (µA)
REFERENCE OUTPUT VOLTAGE (V)
10 20
1.175
1.190
1.160
1.180
1.170
V+ = 5V
OR
V+ = 3V
30
SINK
SOURCE
1.22
1.14
-60 -20 60 140
MAX971/MAX973/MAX974
REFERENCE VOLTAGE vs. TEMPERATURE
1.16
1.20
MAX971/4-TOC3
TEMPERATURE (°C)
REFERENCE VOLTAGE (V)
20 100
1.18
1.21
1.15
1.19
1.17
-40 0 8040 120
MILITARY TEMP. RANGE
EXTENDED TEMP. RANGE
COMMERCIAL
TEMP. RANGE
ELECTRICAL CHARACTERISTICS: 3V OPERATION (continued)
(V+ = 5V, V- = GND = 0V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
CONDITIONS
Output Low Voltage
GND + 0.4
V
V- + 0.4
MAX9_1/MAX9_4, I
OUT
= 0.8mA for C/E temp. ranges,
I
OUT
= 0.6mA for M temp. range
MAX9_2/MAX9_3, I
OUT
= 0.8mA for C/E temp. ranges,
I
OUT
= 0.6mA for M temp. range
µs
4
T
A
= +25°C, 100pF load,
1MΩ pull-up to V+
Overdrive = 100mV
Response Time
(high-to-low transition)
µV
RMS
20100Hz to 100kHzVoltage Noise
V
12
REF - 0.05 REF
Overdrive = 10mV
MAX9_1/MAX982/MAX9_3
Output Leakage Current nA100
Hysteresis Input Voltage Range
V
OUT
= 11V
UNITSMIN TYP MAXPARAMETER
1.158 1.206
1.170 1.182 1.194
15 25
Reference Voltage V
1.147 1.217
Source Current µA
4
6
Voltage Noise µV
RMS
100100Hz to 100kHz
C temp. range
E temp. range
M temp. range
T
A
= +25°C
C/E temp. ranges
M temp. range
µs300T
A
= +25°C, 100pF load, 1MΩ pull-up to V+
Response Time
(low-to-high transition) (Note 2)
Note 1: MAX974/MAX984 comparators work below 2.5V; see
Low-Voltage
Operation section for more details.
Note 2: Low-to-high response time is the result of the 1MΩ pull-up and the 100pF capacitive load, based on three time constants.
A faster response time is achieved with a smaller RC.
4
815
Sink Current µA
2
T
A
= +25°C
C/E temp. ranges
M temp. range
REFERENCE