19-0129; Rev. 3; 7/94
Single/Dual/Quad High-Speed, Ultra Low-Power,
Single-Supply TTL Comparators
_______________General Description
The MAX907/MAX908/MAX909 dual, quad, and single
high-speed, ultra low-power voltage comparators are
designed for use in systems powered from a single
+5V supply; the MAX909 also accepts dual ±5V sup-
plies. Their 40ns propagation delay (with 5mV input
overdrive) is achieved with a power consumption of
only 3.5mW per comparator. The wide input common-
mode range extends from 200mV below ground (below
the negative supply rail for the MAX909) to within 1.5V
of the positive supply rail.
Because they are micropower, high-speed compara-
tors that operate from a single +5V supply and include
built-in hysteresis, these devices replace a variety of
older comparators in a wide range of applications.
MAX907/MAX908/MAX909 outputs are TTL compati-
ble, requiring no external pull-up circuitry. All inputs
and outputs can be continuously shorted to either sup-
ply rail without damage. These easy-to-use compara-
tors incorporate internal hysteresis to ensure clean out-
put switching even when the devices are driven by a
slow-moving input signal.
The MAX909 features complementary outputs and an
output latch. A separate supply pin for extending the
analog input range down to -5V is also provided.
The dual MAX907 and single MAX909 are available in
8-pin DIP and small-outline packages, and the quad
MAX908 is available in 14-pin DIP and small-outline
packages. These comparators are ideal for single
+5V-supply applications that require the combination
of high speed, precision, and ultra-low power
dissipation.
___________________________Features
o
40ns Propagation Delay
o
700µA (3.5mW) Supply Current per Comparator
o
Single 4.5V to 5.5V Supply Operation
(or ±5V, MAX909 only)
o
Wide Input Range Includes Ground
(or -5V, MAX909 only)
o
Low, 500µV Offset Voltage
o
Internal Hysteresis Provides Clean Switching
o
TTL-Compatible Outputs
(Complementary on MAX909)
o
Input and Output Short-Circuit Protection
o
Internal Latch (MAX909 only)
MAX907/MAX908/MAX909
______________Ordering Information
PART
MAX907CPA
MAX907CSA
MAX907C/D
MAX907EPA
MAX907ESA
MAX907MJA
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
PIN-PACKAGE
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
8 CERDIP
Ordering Information continued on last page.
* Dice are specified at +25°C, DC parameters only.
_________________Pin Configurations
TOP VIEW
OUTA
INA-
1
2
8
7
6
V+
OUTB
INB-
INB+
INA+
3
GND
4
_______________________Applications
Battery-Powered Systems
High-Speed A/D Converters
High-Speed V/F Converters
Line Receivers
Threshold Detectors/Discriminators
High-Speed Sampling Circuits
Zero Crossing Detectors
MAX907
5
DIP/SO
OUTA
INA-
1
2
14
OUTD
13
IND-
12
IND+
INA+
3
V+
4
INB+
5
MAX908
11
GND
10
INC+
9
8
INC-
OUTC
INB-
6
OUTB
7
DIP/SO
Pin Configurations continued on last page.
________________________________________________________________ Maxim Integrated Products
1
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