Rainbow Electronics MAX944 - Manual

General Description
The MAX941/MAX942/MAX944 are single/dual/quad
high-speed comparators optimized for systems pow-
ered from a 3V or 5V supply. These devices combine
high speed, low power, and Rail-to-Rail
® inputs.
Propagation delay is 80ns, while supply current is only
350µA per comparator.
The input common-mode range of the MAX941/
MAX942/MAX944 extends beyond both power-supply
rails. The outputs pull to within 0.4V of either supply rail
without external pullup circuitry, making these devices
ideal for interface with both CMOS and TTL logic. All
input and output pins can tolerate a continuous short-
circuit fault condition to either rail.
Internal hysteresis ensures clean output switching,
even with slow-moving input signals. The MAX941 fea-
tures latch enable and device shutdown.
The single MAX941 and dual MAX942 are offered in a
tiny µMAX package. Both the single and dual MAX942
are available in 8-pin DIP and SO packages. The quad
MAX944 comes in 14-pin DIP and narrow SO pack-
ages.
________________________Applications
3V/5V Systems
Battery-Powered Systems
Threshold Detectors/Discriminators
Line Receivers
Zero-Crossing Detectors
Sampling Circuits
____________________________Features
♦ Available in µMAX Package
♦ Optimized for 3V and 5V Applications
(operation down to 2.7V)
♦ Fast, 80ns Propagation Delay (5mV overdrive)
♦ Rail-to-Rail Input Voltage Range
♦ Low Power:
1mW Power Dissipation per Comparator (3V)
350µA Supply Current
♦ Low, 1mV Offset Voltage
♦ Internal Hysteresis for Clean Switching
♦ Outputs Swing 200mV of Power Rails
♦ CMOS/TTL-Compatible Outputs
♦ Output Latch (MAX941 only)
♦ Shutdown Function (MAX941 only)
MAX941/MAX942/MAX944
High-Speed, Low-Power, 3V/5V, Rail-to-Rail,
Single-Supply Comparators
________________________________________________________________ Maxim Integrated Products 1
1
2
3
4
8
7
6
5
N.C.
OUT
GND
LATCH SHDN
IN-
IN+
V+
DIP/SO/ µMAX
1
2
3
4
8
7
6
5
V+
OUTB
INB-
INB+ GND
INA+
INA-
OUTA
MAX942
DIP/SO/ µMAX
14
13
12
11
10
9
8
1
2
3
4
5
6
7
OUTD
IND-
IND+
GND V+
INA+
INA-
OUTA
INC+
INC-
OUTC OUTB
INB-
INB+
DIP/SO
MAX941
MAX944
TOP VIEW
A
B
A D
B C
Pin Configurations
19-0229; Rev 4; 9/01
Ordering Information continued at end of data sheet.
8 SO -40°C to +85°C MAX941ESA
8 Plastic DIP -40°C to +85°C MAX941EPA
8 SO 0°C to +70°C MAX941CSA
8 Plastic DIP 0°C to +70°C MAX941CPA
PIN-PACKAGE TEMP RANGE PART
8 µMAX -40°C to +85°C MAX941EUA
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.
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
Ordering Information