MAX975-MAX977 Maxim, MAX975-MAX977 Datasheet
MAX975-MAX977
Manufacturer Part Number
MAX975-MAX977
Description
Single/Dual / +3V/+5V Dual-Speed Comparators with Auto-Standby
Manufacturer
Maxim
Datasheet
1.MAX975-MAX977.pdf
(16 pages)
The MAX975/MAX977 single/dual comparators feature
three different operating modes, and are optimized for
+3V and +5V single-supply applications. The operating
modes are as follows: high speed, high speed with
auto-standby, and low power. Propagation delay is 28ns
in high-speed mode, while supply current is only 250 A.
Supply current is reduced to 3µA in low-power mode.
The auto-standby feature allows the comparator to
automatically change from low-power mode to high-
speed mode upon receipt of an input signal. In the
absence of an input signal, the comparator reverts
back to low-power mode after an adjustable timeout
period. The timeout period for the MAX975 to enter
standby is set by a single capacitor. The dual MAX977
features independently adjustable timeout periods for
each comparator using separate capacitors.
The MAX975/MAX977’s inputs have a common-mode
voltage range of -0.2V to (V
input voltage range extends rail to rail. The outputs are
capable of rail-to-rail operation without external pull-up
circuitry, making these devices ideal for interface with
CMOS/TTL logic. All inputs and outputs can tolerate a
continuous short-circuit fault condition to either rail. The
comparator’s internal hysteresis in high-speed mode
ensures clean output switching, even with slow-moving
input signals.
The single MAX975 is available in 8-pin SO and 8-pin
14-pin SO and 16-pin QSOP packages.
Pin Configurations appear at end of data sheet.
________________________Applications
19-1141; Rev 1; 11/98
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
MAX packages, while the dual MAX977 is available in
Battery-Powered Systems
RF ID Tags
Keyless Entry
Threshold Detectors/Discriminators
3V Systems
IR Receivers
Digital-Line Receivers
________________________________________________________________ Maxim Integrated Products
General Description
CC
- 1.2V). The differential
Single/Dual, +3V/+5V Dual-Speed
Comparators with Auto-Standby
____________________________Features
MAX975ESA
MAX975EUA
MAX977ESD
MAX977EEE
Three Operating Modes:
28ns Propagation Delay (high-speed mode)
5µA Max Supply Current in Low-Power/
Auto-Standby Modes
+3V/+5V Single-Supply Operation
Rail-to-Rail Outputs
Ground-Sensing Input
Internal Hysteresis (high-speed mode)
Adjustable Timeout Period
µMAX Package (MAX975)
QSOP-16 Package (MAX977)
High Speed
High Speed with Auto-Standby
Low Power
IN+
IN-
STAT
PART
V
HIGH SPEED
LOW POWER
CC
ENABLE
ENABLE
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
Ordering Information
Functional Diagram
MAX975
CIRCUIT
TIMING
PIN-PACKAGE
8 SO
8 µMAX
14 SO
16 QSOP
GND
TRANSITION
MONITOR
OUT
STO
LP
1
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