Rainbow Electronics MAX993 - Manual

General Description
The MAX985/MAX986/MAX989/MAX990/MAX993/
MAX994 single/dual/quad micropower comparators
feature low-voltage operation and Rail-to-Rail® inputs
and outputs. Their operating voltages range from 2.5V
to 5.5V, making them ideal for both 3V and 5V systems.
These comparators also operate with ±1.25V to ±2.75V
dual supplies. They consume only 11µA of supply cur-
rent while achieving a 300ns propagation delay.
Input bias current is typically 1.0pA, and input offset
voltage is typically 0.5mV. Internal hysteresis ensures
clean output switching, even with slow-moving input
signals.
The output stage’s unique design limits supply-current
surges while switching, virtually eliminating the supply
glitches typical of many other comparators. The
MAX985/MAX989/MAX993 have a push-pull output
stage that sinks as well as sources current. Large inter-
nal output drivers allow rail-to-rail output swing with
loads up to 8mA. The MAX986/MAX990/MAX994 have
an open-drain output stage that can be pulled beyond
V
CC to 6V (max) above V EE . These open-drain versions
are ideal for level translators and bipolar to single-
ended converters.
The single MAX985 is available in a chip-scale pack-
age (UCSP™), significantly reducing the required PC
board area. The single MAX985/MAX986 are available
in 5-pin SC70 packages and the dual MAX989/MAX990
are available in 8-pin SOT23 packages.
____________________________Features
♦ 11µA Quiescent Supply Current
♦ 2.5V to 5.5V Single-Supply Operation
♦ Common-Mode Input Voltage Range Extends
250mV Beyond the Rails
♦ 300ns Propagation Delay
♦ Push-Pull Output Stage Sinks and Sources
8mA Current (MAX985/MAX989/MAX993)
♦ Open-Drain Output Voltage Extends Beyond V
CC
(MAX986/MAX990/MAX994)
♦ Unique Output Stage Reduces Output Switching
Current, Minimizing Overall Power Consumption
♦ 80µA Supply Current at 1MHz Switching
Frequency
♦ No Phase Reversal for Overdriven Inputs
♦ Available in Space-Saving Packages:
UCSP (MAX985)
SOT23 (MAX985/MAX986/MAX989/MAX990)
µMAX (MAX989/MAX990)
MAX985/MAX986/MAX989/MAX990/MAX993/MAX994
Micropower, Low-Voltage, UCSP/SC70,
Rail-to-Rail I/O Comparators
________________________________________________________________ Maxim Integrated Products 1
TOP VIEW
(BUMPS ON BOTTOM)
UCSP
MAX985
B1
B2
B3
A1
A2
A3
IN+
IN-
N.C.
V EE
OUT
V CC
Pin Configurations
19-1229; Rev 3; 9/02
Ordering Information
Ordering Information continued at end of data sheet.
Typical Application Circuit appears at end of data sheet.
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
Pin Configurations continued at end of data sheet.
Portable/Battery-
Powered Systems
Mobile Communications
Zero-Crossing Detectors
Window Comparators
Level Translators Threshold Detectors/
Discriminators
Ground/Supply-Sensing
Applications
IR Receivers
Digital Line Receivers
PART TEMP RANGE
PIN/BUMP-
PACKAGE TOP
MARK
MAX985EBT-T* -40°C to +85°C 6 UCSP-6 AAY
MAX985EXK-T -40°C to +85°C 5 SC70-5 ABK
Applications
Selector Guide
PART
COMPARATORS
PER PACKAGE
OUTPUT
STAGE
MAX985 1 Push-Pull
MAX986 1 Open-Drain
MAX989 2 Push-Pull
MAX990 2 Open-Drain
MAX993 4 Push-Pull
MAX994 4 Open-Drain
UCSP is a trademark of Maxim Integrated Products, Inc.
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.
*UCSP reliability is integrally linked to the user’s assembly meth-
ods, circuit board material, and environment. Refer to the UCSP
Reliability section of this data sheet for more information.