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_________________General Description

The MAX961–MAX964/MAX997/MAX999 are low-power,

ultra-high-speed comparators with internal hysteresis.

These devices are optimized for single +3V or +5V

operation. The input common-mode range extends

100mV Beyond-the-Rails

™

, and the outputs can sink

or source 4mA to within 0.52V of GND and V

Propagation delay is 4.5ns (5mV overdrive), while sup-

ply current is 5mA per comparator.

The MAX961/MAX963/MAX964 and MAX997 have a

shutdown mode in which they consume only 270µA

supply current per comparator. The MAX961/MAX963

provide complementary outputs and a latch-enable fea-

ture. Latch enable allows the user to hold a valid com-

parator output. The MAX999 is available in a tiny

SOT23-5 package. The single MAX961/MAX997 and

dual MAX962 are available in space-saving 8-pin µMAX

packages.

________________________Applications

Single 3V/5V Systems

Portable/Battery-Powered Systems

Threshold Detectors/Discriminators

GPS Receivers

Line Receivers

Zero-Crossing Detectors

High-Speed Sampling Circuits

____________________________Features

♦ Ultra-Fast, 4.5ns Propagation Delay

♦ Ideal for +3V and +5V Single-Supply Applications

♦ Beyond-the-Rails Input Voltage Range

♦ Low, 5mA Supply Current (MAX997/MAX999)

♦ 3.5mV Internal Hysteresis for Clean Switching

♦ Output Latch (MAX961/MAX963)

♦ TTL/CMOS-Compatible Outputs

♦ 270µA Shutdown Current per Comparator

(MAX961/MAX963/MAX964/MAX997)

♦ Available in Space-Saving Packages:

5-Pin SOT23 (MAX999)

8-Pin µMAX (MAX961/MAX962/MAX997)

16-Pin QSOP (MAX964)

______________________Selector Guide

MAX961–MAX964/MAX997/MAX999

Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,

Beyond-the-Rails Comparators

________________________________________________________________

Maxim Integrated Products

19-1129; Rev 3; 1/98

PART

MAX961ESA

MAX961EUA

MAX962ESA

-40°C to +85°C

TEMP. RANGE

PIN-

PACKAGE

8 SO

8 µMAX

8 SO

_______________Ordering Information

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800

For small orders, phone 408-737-7600 ext. 3468.

MAX962EUA -40°C to +85°C 8 µMAX

PART

NO. OF

COMPARATORS

COMPLEMENTARY

OUTPUT

SHUTDOWN

LATCH

ENABLE

PACKAGE

MAX961 1 Yes Yes Yes 8 SO/µMAX

MAX962 2 No No No 8 SO/µMAX

MAX963 2 Yes Yes Yes 14 SO

MAX964 4 No Yes No 16 SO/QSOP

MAX963ESD

-40°C to +85°C 14 SO

MAX964ESE

-40°C to +85°C 16 Narrow SO

MAX964EEE -40°C to +85°C 16 QSOP

__________________Pin Configurations

Beyond-the-Rails is a trademark of Maxim Integrated Products.

GND

IN-IN+

15V

MAX999

SOT23-5

Pin Configurations continued at end of data sheet.

MAX997 1 No Yes No 8 SO/µMAX

MAX999 1 No No No 5 SOT23

MAX997ESA

-40°C to +85°C 8 SO

MAX997EUA -40°C to +85°C 8 µMAX

MAX999EUK-T

-40°C to +85°C 5 SOT23-5

TOP VIEW

SOT

TOP MARK

—

ACAB

Summary of content (12 pages)

PAGE 1
9-1129; Rev 3; 1/98 Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators ____________________________Features The MAX961–MAX964/MAX997/MAX999 are low-power, ultra-high-speed comparators with internal hysteresis. These devices are optimized for single +3V or +5V operation. The input common-mode range extends 100mV Beyond-the-Rails™, and the outputs can sink or source 4mA to within 0.52V of GND and V CC . Propagation delay is 4.
PAGE 2
MAX961–MAX964/MAX997/MAX999 Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators ABSOLUTE MAXIMUM RATINGS Supply Voltage, VCC to GND................................... -0.3V to +6V All Other Pins..............................................-0.3V to (VCC + 0.3V) Duration of Output Short Circuit to GND or VCC .......Continuous Continuous Power Dissipation (TA = +70°C) 5-Pin SOT23 (derate 7.1mW/°C above +70°C).......571mW/°C 8-Pin SO (derate 5.88mW/°C above +70°C)...........
PAGE 3
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators MAX961–MAX964/MAX997/MAX999 ELECTRICAL CHARACTERISTICS (continued) (VCC = +2.7V to +5.5V, VCM = 0V, COUT = 5pF, VSHDN = 0V, VLE = 0V, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS TA = +25°C MIN Output Capacitance Supply Current per Comparator ISHDN MIN MAX tR, tF Logic Input High VIH Logic Input Low VIL UNITS pF MAX961/MAX963, VCC = 5V 8.5 11 11 MAX962/MAX964, VCC = 5V 6.
PAGE 4
__________________________________________Typical Operating Characteristics (VCC = +3.0V, CLOAD = 5pF, 5mV of overdrive, TA = +25°C, unless otherwise noted.) PROPAGATION DELAY vs. TEMPERATURE 6.0 5.5 tPD- 4.5 MAX997toc0202 8 6.4 6.2 PROPAGATION DELAY (ns) 6.5 5.0 6.6 PROPAGATION DELAY (ns) 7.0 tPD+ 6.0 tPD- 5.8 5.6 5.4 tPD+ 4.0 tPD6 tPD+ 5 4 5.0 -40 10 20 30 40 50 60 70 80 90 100 -20 0 20 40 85 60 0 20 40 60 100 TEMPERATURE (°C) CAPACITIVE LOAD (pF) PROPAGATION DELAY vs.
PAGE 5
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators 160 VCC = 2.7V 110 1 VOS 0 -1 2 1 -1 VTRIP-2 VTRIP- -3 -3 -20 20 0 40 85 60 -40 -20 TEMPERATURE (°C) 0 20 40 2 85 60 8 6 TA = +25°C 4 TA = +85°C 2 140 SHORT-CIRCUIT CURRENT (mA) VCC = 5.0V VIN = VOS NEGATIVE VALUES REPRESENT CURRENT FLOWING INTO THE DEVICE TA = -40°C 5 6 SHORT-CIRCUIT OUTPUT CURRENT vs. TEMPERATURE 14 12 4 SUPPLY VOLTAGE (V) INPUT BIAS CURRENT (IB+, IB-) vs.
PAGE 6
MAX961–MAX964/MAX997/MAX999 Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators ____________________________Typical Operating Characteristics (continued) (VCC = +3.0V, CLOAD = 5pF, 5mV of overdrive, TA = +25°C, unless otherwise noted.
PAGE 7
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators The MAX961–MAX964/MAX997/MAX999 single-supply comparators feature internal hysteresis, ultra-highspeed operation, and low power consumption. Their outputs are guaranteed to pull within 0.52V of either rail without external pull-up or pull-down circuitry. Beyondthe-Rails™ input voltage range and low-voltage, singlesupply operation make these devices ideal for portable equipment. These comparators all interface directly to CMOS logic.
PAGE 8
MAX961–MAX964/MAX997/MAX999 Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators tSU tH DIFFERENTIAL INPUT VOLTAGE VOS tLPW VCC VCC 2 LE 0V tPD tLPD VOH VCC 2 Q VOL VCC 2 Q tSKEW tSKEW Figure 2. MAX961/MAX963 Timing Diagram For a large differential input voltage (exceeding 3VF), this protection circuitry increases the input bias current at IN+ (source) and IN- (sink).
PAGE 9
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators ISOURCE MAX961-MAX964 MAX997 MAX999 Q, Q ISINK GND Figure 5. MAX961 PC Board Layout Figure 4. Output Stage Circuitry Output Stage Circuitry The MAX961–MAX964/MAX997/MAX999 contain a current-driven output stage, as shown in Figure 4. During an output transition, ISOURCE or ISINK is pushed or pulled to the output pin. The output source or sink current is high during the transition, creating a rapid slew rate.
PAGE 10
MAX961–MAX964/MAX997/MAX999 Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators ___________________________________________________________Pin Configurations TOP VIEW 8 VCC INA+ 1 7 Q INA- 2 SHDN 3 6 Q LE 4 5 GND IN+ 1 IN- 2 MAX961 8 VCC 7 QA INB+ 3 6 QB INB- 4 5 GND MAX962 SO/µMAX SO/µMAX INA- 1 14 QA INA- 1 16 N.C.
PAGE 11
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators 8LUMAXD.EPS QSOP.
PAGE 12
___________________________________________Package Information (continued) SOT5L.EPS SOICN.EPS MAX961–MAX964/MAX997/MAX999 Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators 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.