Rainbow Electronics MAX909 - Manual

MAX907/MAX908/MAX909
Dual/Quad/Single, High-Speed, Ultra-Low-Power,
Single-Supply TTL Comparators
________________________________________________________________ Maxim Integrated Products 1
1
2
3
4
8
7
6
5
V+
OUTB
INB-
INB+ GND
INA+
INA-
OUTA
MAX907
DIP/SO
TOP VIEW
1
2
3
4
14
13
12
11
OUTD
IND-
IND+
GND V+
INA+
INA-
OUTA
MAX908
DIP/SO
5
6
7
10
9
8
INC+
INC-
OUTC OUTB
INB-
INB+
Pin Configurations
19-0129; Rev. 4; 9/01
General Description
The MAX907/MAX908/MAX909 are dual/quad/single,
high-speed, ultra-low-power voltage comparators
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 pullup circuitry. All inputs and
outputs can be continuously shorted to either supply
rail without damage. These easy-to-use comparators
incorporate internal hysteresis to ensure clean output
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 SO packages, and the quad MAX908 is
available in 14-pin DIP and SO packages. These com-
parators are ideal for single +5V-supply applications
that require the combination of high speed, precision,
and ultra-low power dissipation.
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
Features
♦ 40ns Propagation Delay
♦ 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)
♦ Input and Output Short-Circuit Protection
♦ Internal Latch (MAX909 only)
Ordering Information
PART TEMP. RANGE PIN-PACKAGE
MAX907CPA 0°C to +70°C 8 Plastic DIP
MAX907CSA 0°C to +70°C 8 SO
MAX907EPA 8 Plastic DIP
MAX907ESA -40°C to +85°C
-40°C to +85°C
8 SO
Ordering Information continued at end of data sheet.
Pin Configurations continued at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.