MAX975ESA+ Maxim Integrated Products, MAX975ESA+ Datasheet

MAX975ESA+

Manufacturer Part Number

MAX975ESA+

Description

IC COMPARATOR SNGL 3V/5V 8-SOIC

Manufacturer

Maxim Integrated Products

Type

General Purposer

Datasheet

1.MAX975EUA.pdf (17 pages)

Specifications of MAX975ESA+

Number Of Elements

Output Type

CMOS, Rail-to-Rail, TTL

Voltage - Supply

2.7 V ~ 5.25 V

Mounting Type

Surface Mount

Package / Case

8-SOIC (0.154", 3.90mm Width)

Number Of Channels

1 Channel

Product

Digital Comparators

Offset Voltage (max)

+/- 5 mV

Input Bias Current (max)

- 300 nA

Supply Voltage (max)

5.25 V

Supply Voltage (min)

2.7 V

Supply Current (max)

500 uA

Maximum Power Dissipation

471 mW

Maximum Operating Temperature

+ 85 C

Mounting Style

SMD/SMT

Minimum Operating Temperature

- 40 C

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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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

in 14-pin SO and 16-pin QSOP packages.

________________________Applications

Pin Configurations appear at end of data sheet.

19-1141; Rev 2; 2/07

µMAX is a registered 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.

MAX

Battery-Powered Systems

RF ID Tags

Keyless Entry

Threshold Detectors/Discriminators

3V Systems

IR Receivers

Digital-Line Receivers

packages, while the dual MAX977 is available

________________________________________________________________ Maxim Integrated Products

General Description

- 1.2V). The differential

Single/Dual, +3V/+5V Dual-Speed

Comparators with Auto-Standby

____________________________Features

MAX975ESA

MAX975EUA-T

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

HIGH SPEED

LOW POWER

ENABLE

TEMP RANGE

-40°C to +85°C

Ordering Information

Functional Diagram

MAX975

PIN-

PACKAGE

8 SO

8 µMAX-8

14 SO

16 QSOP

CIRCUIT

TIMING

GND

TRANSITION

MONITOR

OUT

STO

CODE

S14-1

E16-1

PKG

U8-1

S8-2

Related parts for MAX975ESA+

MAX975ESA+ Summary of contents

Page 1

... Keyless Entry Threshold Detectors/Discriminators 3V Systems IR Receivers Digital-Line Receivers µMAX is a registered trademark of Maxim Integrated Products, Inc. Pin Configurations appear at end of data sheet. ________________________________________________________________ Maxim Integrated Products 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. ...

Page 2

Single/Dual, +3V/+5V Dual-Speed Comparators with Auto-Standby ABSOLUTE MAXIMUM RATINGS Supply Voltage (V ............................................................+ All Other Pins..............................................-0. Current into Input Pins ......................................................±20mA Duration of Output Short Circuit to GND_ or V Continuous Power Dissipation (T = +70°C) ...

Page 3

ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.25V, specifications are for high-speed mode +25°C.) (Note 1) A PARAMETER SYMBOL DIGITAL INPUTS LP Input Voltage High V LP Input Voltage Low V LP Fall Time LP Input ...

Page 4

Single/Dual, +3V/+5V Dual-Speed Comparators with Auto-Standby ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.25V, specifications are for high-speed mode +25°C.) (Note 1) A PARAMETER SYMBOL AUTO-STANDBY/LOW-POWER TIMING (Note 7; Figure 2) Auto-Standby Timeout t ASB Auto-Standby ...

Page 5

Operating Characteristics (V = 3.0V +25°C, unless otherwise noted LOW-POWER OFFSET VOLTAGE vs. TEMPERATURE -0.60 -0. -0.70 -0.75 -0.80 -0.85 -0.90 -0.95 -1.00 -1.05 -1.10 -1.15 -1.20 -60 -40 -20 0 ...

Page 6

Single/Dual, +3V/+5V Dual-Speed Comparators with Auto-Standby ____________________________Typical Operating Characteristics (continued 3.0V +25°C, unless otherwise noted AUTO-STANDBY TIMEOUT vs. TIMEOUT CAPACITOR 100000 10000 1000 100 100 1000 10,000 CAPACITANCE (pF) HIGH-SPEED ...

Page 7

Operating Characteristics (continued 3.0V +25°C, unless otherwise noted HIGH-SPEED PROPAGATION DELAY vs. CAPACITIVE LOAD 45.0 42 15pF LOAD 50mV 40.0 OD 37.5 t PD- 35.0 ...

Page 8

Single/Dual, +3V/+5V Dual-Speed Comparators with Auto-Standby ____________________________Typical Operating Characteristics (continued 3.0V +25°C, unless otherwise noted PROPAGATION DELAY t HIGH-SPEED MODE (V = +5V GND 5ns/div t ...

Page 9

Operating Characteristics (continued 3.0V +25°C, unless otherwise noted 100kHz RESPONSE LOW-POWER MODE ( GND 2 s/div 10MHz RESPONSE HIGH-SPEED MODE ( GND 20ns/div ...

Page 10

Single/Dual, +3V/+5V Dual-Speed Comparators with Auto-Standby _____________________________________________________________Pin Descriptions MAX975 PIN NAME 1 V Positive Supply Voltage, +2.7V to +5.25V CC 2 IN+ Noninverting Comparator Input 3 IN- Inverting Comparator Input Mode Status Pin. Indicates the operating mode. STAT is high ...

Page 11

Table 1. Programming INPUTS LP STO_ 10µs/pF ASB STO 10µs/pF ASB STO L (falling edge _______________Detailed Description The MAX975/MAX977 single/dual comparators have three operating modes, and use a ...

Page 12

Single/Dual, +3V/+5V Dual-Speed Comparators with Auto-Standby V OS DIFFERENTIAL INPUT VOLTAGE OUT_ PD STAT_ 0V 300 (TYP Figure 2. Timing Diagram powered up, the ...

Page 13

Information Powering Circuitry with STAT STAT’s function is to indicate the comparator’s operat- ing mode. When STAT is low, the comparator is in high- speed mode and will meet the guaranteed propagation delay. When STAT is high, the comparator ...

Page 14

Single/Dual, +3V/+5V Dual-Speed Comparators with Auto-Standby 82. 1/2 MAX977 STOA 24. MAX6120 1/2 MAX977 ...

Page 15

Configurations TOP VIEW IN MAX975 IN STAT 4 5 SO/ MAX ___________________Chip Information TRANSISTOR COUNT: 522 (MAX975) 1044 (MAX977) ______________________________________________________________________________________ Single/Dual, +3V/+5V Dual-Speed Comparators with Auto-Standby STOA 1 14 STATA 2 ...

Page 16

Single/Dual, +3V/+5V Dual-Speed Comparators with Auo-Standby (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 Ø0.50±0.1 0.6±0.1 1 0.6±0.1 D TOP VIEW A1 ...

Page 17

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 17 © 2007 Maxim Integrated Products ...

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