MAX995 Maxim, MAX995 Datasheet

no-image

MAX995

Manufacturer Part Number
MAX995
Description
The MAX987/MAX988/MAX991/MAX992/MAX995/ MAX996 single/dual/quad micropower comparators feature low-voltage operation and rail-to-rail inputs and outputs
Manufacturer
Maxim
Datasheet
µMAX is a registered trademark of Maxim Integrated Products,
Inc.
19-1266; Rev 2; 1/07
The MAX987/MAX988/MAX991/MAX992/MAX995/
MAX996 single/dual/quad micropower comparators
feature low-voltage operation and rail-to-rail inputs and
outputs. Their operating voltage ranges 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 48µA per compara-
tor while achieving a 120ns propagation delay.
Input bias current is typically 1.0pA, and input offset volt-
age 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
MAX987/MAX991/MAX995 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 MAX988/MAX992/MAX996 have
an open-drain output stage that can be pulled beyond
V
are ideal for level translators and bipolar to single-
ended converters.
The single MAX987/MAX988 are available in tiny 5-pin
SC70 packages, while the dual MAX991/MAX992 are
available in ultra-small 8-pin SOT23 and µMAX
ages.
Portable/Battery-
Powered Systems
Mobile Communications
Zero-Crossing Detectors
Window Comparators
Level Translators
________________General Description
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.
CC
MAX987
MAX988
MAX991
MAX992
MAX995
MAX996
PART
to 6V (max) above V
________________________________________________________________ Maxim Integrated Products
COMPARATORS
PER PACKAGE
High-Speed, Micropower, Low-Voltage,
EE
1
1
2
2
4
4
. These open-drain versions
Threshold Detectors/
Discriminators
Ground/Supply Sensing
IR Receivers
Digital Line Receivers
SOT23, Rail-to-Rail I/O Comparators
Selector Guide
Applications
Open-Drain
Open-Drain
Open-Drain
Push-Pull
Push-Pull
Push-Pull
OUTPUT
STAGE
®
pack-
♦ 120ns Propagation Delay
♦ 48µA Quiescent Supply Current
♦ +2.5V to +5.5V Single-Supply Operation
♦ Common-Mode Input Voltage Range Extends
♦ Push-Pull Output Stage Sinks and Sources
♦ Open-Drain Output Voltage Extends Beyond V
♦ Unique Output Stage Reduces Output Switching
♦ 100µA Supply Current at 1MHz Switching
♦ No Phase Reversal for Overdriven Inputs
♦ Available in Space-Saving Packages:
____________________________Features
_______________Ordering Information
Ordering Information continued at end of data sheet.
Typical Application Circuit appears at end of data sheet.
Note: All devices specified over the -40°C to +85°C operating
temperature range.
Pin Configurations continued at end of data sheet.
MAX987EXK-T
MAX987EUK-T
MAX987ESA
250mV Beyond the Rails
8mA Current (MAX987/MAX991/MAX995)
(MAX988/MAX992/MAX996)
Current, Minimizing Overall Power Consumption
Frequency
TOP VIEW
PART
5-Pin SOT23 (MAX987/MAX988)
8-Pin µMAX (MAX991/MAX992)
OUT
5 SC70-5
5 SOT23-5
8 SO
V
PIN-PACKAGE
IN+
CC
1
2
3
SOT23/SC70
Pin Configurations
MAX987
MAX988
5
4
CODE
PKG
X5-1
U5-1
S8-2
V
IN-
EE
MARK
ABZB
TOP
ABM
CC
1

Related parts for MAX995

MAX995 Summary of contents

Page 1

... The output stage’s unique design limits supply-current surges while switching, virtually eliminating the supply glitches typical of many other comparators. The MAX987/MAX991/MAX995 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 ...

Page 2

... V ) ................................................... IN_-, IN_ .......................................-0. Current into Input Pins .....................................................±20mA OUT_ MAX987/MAX991/MAX995 ....................-0. MAX988/MAX992/MAX996 ..................................-0.3V to +6V OUT_ Short-Circuit Duration Continuous Power Dissipation (T = +70°C) A 5-Pin SC70 (derate 3.1mW/°C above +70°C) ...............247mW Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied ...

Page 3

... ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.5V 0V PARAMETER SYMBOL OUT Rise Time (MAX987/MAX991/ t RISE MAX995 Only) OUT Fall Time t FALL t PD- Propagation Delay t PD+ Power-Up Time t PU Note 1: All device specifications are 100% production tested at T anteed by design, not production tested. ...

Page 4

High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators (V = +5V 0V +25°C, unless otherwise noted SUPPLY CURRENT PER COMPARATOR vs. TEMPERATURE 90 V > V IN+ IN ...

Page 5

... V = 2.5.V CC 160 150 140 V = 5.5.V CC 130 120 110 100 -60 -40 - 100 TEMPERATURE (°C) MAX987/MAX991/MAX995 PROPAGATION DELAY (t ) PD+ MAX987- 50mV OD IN+ OUT 100ns/div MAX987/MAX991/MAX995 SWITCHING CURRENT, OUT RISING MAX987- 50mV OD IN+ OUT I CC 200ns/div 50mV/div 2V/div 50mV/div 2V/div 2mA/div 5 ...

Page 6

High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators (V = +5V 0V +25°C, unless otherwise noted SWITCHING CURRENT, OUT FALLING V OD IN+ OUT I CC 200ns/div 6 _______________________________________________________________________________________ Typical Operating Characteristics (continued) MAX987-14 ...

Page 7

... MAX995 MAX996 NAME SO/ TSSOP — OUT Comparator Output 4 V Positive Supply Voltage CC — IN+ Comparator Noninverting Input — IN- Comparator Inverting Input 11 V Negative Supply Voltage ...

Page 8

... Unfortunately, this method also slows hysteresis response time. Use the following procedure to calcu- late resistor values for the MAX987/MAX991/MAX995. 1) Select R3. Leakage current under 10nA; therefore, the current through R3 should be at least 1µA to minimize errors caused by leakage current. ...

Page 9

... THR THF MAX988/MAX992/MAX996 The MAX988/MAX992/MAX996 have ±2.5mV internal hysteresis. They have open-drain outputs and require an external pullup resistor (Figure 2). Additional hys- teresis can be generated using positive feedback, but the formulas differ slightly from those of the MAX987/MAX991/MAX995 ...

Page 10

... INB SO/µMAX/SOT23 Logic-Level Translator +5V (+3V) 0.1µF +3V (+5V PULLUP IN- 3V (5V) OUT 1 LOGIC OUT IN+ MAX988 OUTA 1 14 OUTD INA IND- INA IND+ MAX995 MAX996 INB INC+ INB INC- OUTB 7 8 OUTC SO/TSSOP ...

Page 11

... MAX988EUK-T 0.1µF MAX988ESA *R MAX991EKA-T PULLUP MAX991EUA-T MAX991ESA OUT MAX992EKA-T MAX992EUA-T MAX992ESA MAX995EUD MAX995ESD MAX996EUD MAX996ESD Note: All devices specified over the -40°C to +85°C operating temperature range. 4.0 ±0.1 2.0 ±0.05 A0 4.0 ±0 3.1mm ±0.1 NOTE: DIMENSIONS ARE IN MM. AND Bo = 2.7mm ±0 FOLLOW EIA481-1 STANDARD. ...

Page 12

... High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 12 ______________________________________________________________________________________ Package Information ...

Page 13

... Revision History Pages changed at Rev 2: 1–6, 8–13 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. ...

Related keywords