19-0129; Rev. 3; 7/94
S in g le /Du a l/Qu a d Hig h -S p e e d , Ult ra Lo w -P o w e r,
S in g le -S u p p ly TTL Co m p a ra t o rs
78/MAX09
_______________Ge n e ra l De s c rip t io n
___________________________Fe a t u re s
♦ 40ns Propagation Delay
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.
♦ 700µA (3.5mW) Supply Current per Comparator
♦ Single 4.5V to 5.5V Supply Operation
(or ±5V, MAX909 only)
♦ Wide Input Range Includes Ground
(or -5V, MAX909 only)
♦ Low, 500µV Offset Voltage
♦ Internal Hysteresis Provides Clean Switching
♦ TTL-Compatible Outputs
(Complementary on MAX909)
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.
♦ Input and Output Short-Circuit Protection
♦ Internal Latch (MAX909 only)
______________Ord e rin g In fo rm a t io n
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.
PART
TEMP. RANGE
0°C to +70°C
PIN-PACKAGE
8 Plastic DIP
8 SO
MAX907CPA
MAX907CSA
MAX907C/D
MAX907EPA
MAX907ESA
MAX907MJA
0°C to +70°C
0°C to +70°C
Dice*
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
8 Plastic DIP
8 SO
8 CERDIP
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.
Ordering Information continued on last page.
* Dice are specified at +25°C, DC parameters only.
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 hig h s p e e d , p re c is ion, a nd ultra -low p owe r
dissipation.
_________________P in Co n fig u ra t io n s
TOP VIEW
OUTA
1
2
3
4
8
7
6
5
V+
INA-
OUTB
INB-
INA+
GND
INB+
MAX907
_______________________Ap p lic a t io n s
DIP/SO
Battery-Powered Systems
High-Speed A/D Converters
High-Speed V/F Converters
Line Receivers
OUTA
1
2
3
4
14
13
12
OUTD
IND-
INA-
INA+
IND+
Threshold Detectors/Discriminators
High-Speed Sampling Circuits
Zero Crossing Detectors
V+
INB+
INB-
11 GND
MAX908
5
6
7
INC+
INC-
10
9
OUTB
8
OUTC
DIP/SO
Pin Configurations continued on last page.
________________________________________________________________ Maxim Integrated Products
1
Ca ll t o ll fre e 1 -8 0 0 -9 9 8 -8 8 0 0 fo r fre e s a m p le s o r lit e ra t u re .