Rainbow Electronics MAX9109 User Manual

MAX9107/MAX9108/MAX9109

25ns, Dual/Quad/Single, Low-Power,

TTL Comparators

________________________________________________________________ Maxim Integrated Products 1

Pin Configurations

19-2045; Rev. 0; 5/01

General Description

The MAX9107/MAX9108/MAX9109 dual/quad/single,
high-speed, low-power voltage comparators are
designed for use in systems powered from a single
+5V supply. Their 25ns propagation delay (with 10mV
input overdrive) is achieved with a power consumption
of only 1.75mW per comparator. The wide input com­mon-mode range extends from 200mV below ground
to within 1.5V of the positive supply rail.

The MAX9107/MAX9108/MAX9109 outputs are TTL­compatible, requiring no external pullup circuitry.
These easy-to-use comparators incorporate internal
hysteresis to ensure clean output switching even when
the devices are driven by a slow-moving input signal.

The MAX9107/MAX9108/MAX9109 are higher-speed,
lower-power, lower-cost upgrades to industry-standard
comparators MAX907/MAX908/MAX909. The MAX9109
features an output latch but does not have comple­mentary outputs.

The dual MAX9107 is available in both 8-pin SO and
SOT23 packages. The quad MAX9108 is available in
14-pin TSSOP and SO packages while the single
MAX9109 is available in an ultra-small 6-pin SC70
package, a space-saving 6-pin SOT23 package and
an 8-pin SO package.

Applications

Features

♦ 25ns Propagation Delay

♦ 350µA (1.75mW) Supply Current Per Comparator

♦ Single 4.5V to 5.5V Supply Operation

♦ Wide Input Range Includes Ground

♦ Low 500µV Offset Voltage

♦ Internal Hysteresis Provides Clean Switching

(2mV)

♦ TTL-Compatible Outputs

♦ Internal Latch (MAX9109 only)

♦ No Phase Reversal for Overdriven Inputs

♦ Space-Saving Packages:

6-Pin SC70 (MAX9109)

8-Pin SOT23 (MAX9107)

14-Pin TSSOP (MAX9108)

Ordering Information

Battery-Powered Systems

A/D Converters

Line Receivers

Threshold Detectors/
Discriminators

Sampling Circuits

Zero-Crossing Detectors

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.

PART TEMP. RANGE

MAX9107EKA-T -40°C to +85°C 8 SOT23-8 AAIB

MAX9107ESA -40°C to +85°C 8 SO —

MAX9108EUD -40°C to +85°C 14 TSSOP —

MAX9108ESD -40°C to +85°C 14 SO —

MAX9109EXT-T -40°C to +85°C 6 SC70-6 AAU

MAX9109EUT-T -40°C to +85°C 6 SOT23-6 AARU

MAX9109ESA -40°C to +85°C 8 SO —

PIN­PACKAGE

TOP

MARK

TOP VIEW

OUTA

INA-

INA+

GND

OUTA

INA-

INA+

INB+

INB-

CC

1

2

3

4

5

6

7

A

MAX9108

B

TSSOP/SO

1

2

3

4

MAX9107

SOT23/SO

V

CC

OUTB

7

6

INB-

INB+

5

14

OUTD

OUT

13

IND-

D

12

IND+

GND

11

GNDV

INC+

10

C

9

INC-

OUTCOUTB

8

MAX9109

16V

2

34

SC70/SOT23

CC

5 LE

IN-IN+

8

V

IN+

N.C.

1

CC

IN-

MAX9109

2

3

4

SO

8

N.C.

OUT

7

6

GND

LE

5

MAX9107/MAX9108/MAX9109

25ns, Dual/Quad/Single, Low-Power,
TTL Comparators

2 _______________________________________________________________________________________

Power-Supply Ranges

Supply Voltage (V

CC

to GND)..............................................6V

Differential Input Voltage........................-0.3V to (V

CC

+ 0.3V)

Common-Mode Input Voltage to GND ...-0.3V to (V

CC

+ 0.3V)

Latch-Enable Input Voltage

(MAX9109 only)...................................-0.3V to (V

CC

+ 0.3V)

Output Short-Circuit Duration to V

CC

or GND ........................10s

Continuous Power Dissipation (T

A

= +70°C)

6-Pin SC70 (derate 3.1mW/°C above +70°C)..............245mW

6-Pin SOT23 (derate 8.7mW/°C above +70°C)............696mW

8-Pin SOT23 (derate 9.1mW/°C above +70°C)............727mW

8-Pin SO (derate 5.9mW/°C above +70°C)..................470mW

14-Pin TSSOP (derate 9.1mW/°C above +70°C) .........727mW

14-Pin SO (derate 8.33mW/°C above +70°C)..............666mW

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

ELECTRICAL CHARACTERISTICS

(VCC= +5V, VCM= 0, VLE= 0 (MAX9109 only), TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

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. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

ABSOLUTE MAXIMUM RATINGS

PARAMETER

Operating Voltage Range

Input Bias Current

Input Offset Current

Common-Mode Rejection Ratio

Power-Supply Rejection Ratio

Output High Voltage

Output Low Voltage

Output Rise Time

Output Fall Time

t

f

t

r

V

OL

V

OH

PSRR

CMRR

I

OS

I

B

V

CC

SYMBOL

V

OUT

= 2.4V to 0.4V, CL= 10pF

V

OUT

= 0.4V to 2.4V, CL= 10pF

I

SINK

= 8mA

I

SINK

= 3.2mA

I

SOURCE

= 100µA

4.5V ≤ V

CC

≤ 5.5V

VCC= 5.5V (Note 5)

TA= +25°C

Guaranteed by PSRR

CONDITIONS MIN TYP MAX

4.5 5.5

0.5 1.6

125 350

25 80

50 1000

50 1000

3.0 3.5

0.35 0.6

0.4

12

6 ns

ns

V

V

µV/V

µV/V

nA

nA

V

UNITS

Input Hysteresis

V

HYST

(Note 3) 2 mV

Input Voltage Range

V

CMR

(Note 4) -0.2 VCC- 1.5 V

mASupply Current Per Comparator VCC= +5.5V, all outputs low

I

CC

0.35 0.7

Input Offset Voltage

V

OS

TA= T

MIN

to T

MAX

4.0

mV

(Note 2)

MAX9107/MAX9108/MAX9109

25ns, Dual/Quad/Single, Low-Power,

TTL Comparators

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VCC= +5V, VCM= 0, VLE= 0 (MAX9109 only), TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

Latch Hold Time

Latch Setup Time

Latch Input Current

Latch Input Voltage Low

Latch Input Voltage High

Propagation Delay Skew

Differential Propagation Delay

Propagation Delay

PARAMETER SYMBOL

t

PD+,tPD-

∆t

PD

tPDskew

V

IH

V

IL

IIH, I

IL

t

s

t

h

(Note 8)

(Note 8)

(Note 8)

(Note 8)

(Note 8)

VIN= 100mV, VOD= 10mV
(Note 7)

VIN= 100mV, VOD= 10mV
(Note 6)

VIN= 100mV, VOD= 10mV

CONDITIONS MIN TYP MAX

25

1

5

2.0

0.8

0.4 1

2

2 ns

ns

µA

V

V

ns

ns

ns

UNITS

Note 1: Devices are 100% production tested at TA= +25°C. All temperature limits are guaranteed by design.
Note 2: Input Offset Voltage is defined as the center of the input-referred hysteresis zone. Specified for V

CM

= 0. See Figure 1.

Note 3: Trip Point is defined as the input voltage required to make the comparator output change state. The difference

between upper (V

TRIP

+) and lower (V

TRIP

-) trip points is equal to the width of the input-referred hysteresis zone (V

HYST

).

Specified for an input common-mode voltage (V

CM

) of 0. See Figure 1.

Note 4: Inferred from the CMRR test. Note that a correct logic result is obtained at the output, provided that at least one input is

within the V

CMR

limits. Note also that either or both inputs can be driven to the upper or lower absolute maximum limit with-

out damage to the part.

Note 5: Tested over the full-input voltage range (V

CMR

).

Note 6: Differential Propagation Delay is specified as the difference between any two channels in the MAX9107/MAX9108 (both

outputs making either a low-to-high or a high-to-low transition).

Note 7: Propagation Delay Skew is specified as the difference between any single channel’s output low-to-high transition (t

PD

+)

and high-to-low transition (t

PD

-).

Note 8: Latch specifications apply to MAX9109 only. See Figure 2.