19-2045; Rev. 2; 1/07
25ns, Dual/Quad/Single, Low-Power,
TTL Comparators
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 com-
mon-mode range extends from 200mV below ground
to within 1.5V of the positive supply rail.
The MAX9107/MAX9108/MAX9109 outputs are TTL-
compatible, 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 comple-
mentary 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.
♦
♦
♦
♦
♦
♦
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)
♦
Space-Saving Packages:
6-Pin SC70 (MAX9109)
8-Pin SOT23 (MAX9107)
14-Pin TSSOP (MAX9108)
MAX9107/MAX9108/MAX9109
Ordering Information
PART
MAX9107EKA-T
MAX9107ESA
MAX9108EUD
MAX9108ESD
MAX9109EXT-T
MAX9109EUT-T
MAX9109ESA
PIN-
PACKAGE
8 SOT23-8
8 SO
14 TSSOP
14 SO
6 SC70-6
6 SOT23-6
8 SO
TOP
MARK
AAIB
—
—
—
AAU
AARU
—
PKG
CODE
K8-5
S8-2
U14-1
S14-1
X6S-1
U6-1
S8-2
Applications
Battery-Powered Systems
A/D Converters
Line Receivers
Threshold Detectors/
Discriminators
Sampling Circuits
Zero-Crossing Detectors
Note:
All devices are specified over the -40°C to +85°C operat-
ing temperature range.
Pin Configurations
TOP VIEW
OUTA
INA-
INA+
GND
1
2
3
4
MAX9107
8 V
CC
OUTA 1
A
D
14 OUTD
13 IND-
12 IND+
MAX9108
B
C
9 INC-
8 OUTC
11 GND
10 INC+
OUT
1
MAX9109
6
V
CC
V
CC
IN+
1
2
3
4
MAX9109
8 N.C.
7 OUT
6 GND
5 LE
7 OUTB INA- 2
6 INB-
5 INB+
INA+ 3
V
CC
4
INB+ 5
GND
2
5
LE
IN-
N.C.
IN+
3
4
IN-
SOT23/SO
INB- 6
OUTB 7
SO
SC70/SOT23
TSSOP/SO
________________________________________________________________ Maxim Integrated Products
1
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.
25ns, Dual/Quad/Single, Low-Power,
TTL Comparators
MAX9107/MAX9108/MAX9109
ABSOLUTE MAXIMUM RATINGS
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)
Current into Input Pins ......................................................±20mA
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
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.
ELECTRICAL CHARACTERISTICS
(V
CC
= +5V, V
CM
= 0, V
LE
= 0 (MAX9109 only), T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
Operating Voltage Range
Input Offset Voltage
Input Hysteresis
Input Bias Current
Input Offset Current
Input Voltage Range
Common-Mode Rejection Ratio
Power-Supply Rejection Ratio
Output High Voltage
Output Low Voltage
Supply Current Per Comparator
Output Rise Time
Output Fall Time
SYMBOL
V
CC
V
OS
V
HYST
I
B
I
OS
V
CMR
CMRR
PSRR
V
OH
V
OL
I
CC
t
r
t
f
(Note 4)
V
CC
= 5.5V (Note 5)
4.5V
≤
V
CC
≤
5.5V
I
SOURCE
= 100µA
I
SINK
= 3.2mA
I
SINK
= 8mA
V
CC
= +5.5V, all outputs low
V
OUT
= 0.4V to 2.4V, C
L
= 10pF
V
OUT
= 2.4V to 0.4V, C
L
= 10pF
3.0
-0.2
50
50
3.5
0.35
0.4
0.35
12
6
0.7
0.6
CONDITIONS
Guaranteed by PSRR
(Note 2)
(Note 3)
T
A
= +25°C
T
A
= T
MIN
to T
MAX
2
125
25
350
80
V
CC
- 1.5
1000
1000
MIN
4.5
0.5
TYP
MAX
5.5
1.6
4.0
UNITS
V
mV
mV
nA
nA
V
µV/V
µV/V
V
V
mA
ns
ns
2
_______________________________________________________________________________________
25ns, Dual/Quad/Single, Low-Power,
TTL Comparators
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +5V, V
CM
= 0, V
LE
= 0 (MAX9109 only), T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
Propagation Delay
Differential Propagation Delay
Propagation Delay Skew
Latch Input Voltage High
Latch Input Voltage Low
Latch Input Current
Latch Setup Time
Latch Hold Time
Note 1:
Note 2:
Note 3:
SYMBOL
t
PD+,
t
PD-
∆t
PD
t
PD
skew
V
IH
V
IL
I
IH
, I
IL
t
s
t
h
CONDITIONS
V
IN
= 100mV, V
OD
= 10mV
V
IN
= 100mV, V
OD
= 10mV
(Note 6)
V
IN
= 100mV, V
OD
= 10mV
(Note 7)
(Note 8)
(Note 8)
(Note 8)
(Note 8)
(Note 8)
0.4
2
2
2.0
0.8
1
MIN
TYP
25
1
5
MAX
UNITS
ns
ns
ns
V
V
µA
ns
ns
MAX9107/MAX9108/MAX9109
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Devices are 100% production tested at T
A
= +25°C. All temperature limits are guaranteed by design.
Input Offset Voltage is defined as the center of the input-referred hysteresis zone. Specified for V
CM
= 0. See Figure 1.
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.
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.
Tested over the full-input voltage range (V
CMR
).
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).
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
-).
Latch specifications apply to MAX9109 only. See Figure 2.
_______________________________________________________________________________________
3
25ns, Dual/Quad/Single, Low-Power,
TTL Comparators
MAX9107/MAX9108/MAX9109
__________________________________________Typical Operating Characteristics
(V
CC
= 5V, V
CM
= 0, C
L
= 15pF, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
(OUTPUTS AT V
OL
)
MAX9107/08/09 toc01
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
(OUTPUTS AT V
OH
)
MAX9107/08/09 toc02
INPUT VOLTAGE RANGE
vs. TEMPERATURE
MAX9107/08/09 toc03
0.6
0.5
SUPPLY CURRENT (mA)
0.4
0.3
0.2
0.1
0
4.0
4.5
5.0
5.5
T
A
= -55°C
T
A
= +125°C
T
A
= +25°C
0.5
5
4
3
2
1
0
-1
INPUT VOLTAGE RANGE (V)
0.4
SUPPLY CURRENT (mA)
T
A
= +125°C
0.3
T
A
= +25°C
0.2
T
A
= -55°C
V
CMR+
0.1
V
CMR-
-60 -40 -20 0
20 40 60 80 100 120 140
0
6.0
4.0
4.5
5.0
5.5
6.0
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX9107/08/09 toc04
INPUT BIAS CURRENT
vs. TEMPERATURE
200
150
100
50
0
-50
-100
-150
-200
-250
-300
-350
-400
-50
-25
0
25
50
75
TEMPERATURE (°C)
MAX9107/08/09 toc05
TRIP POINT
vs. TEMPERATURE
V
CM
= 0
1
V
OS
(mV)
V
TRIP+
MAX9107/08/09 toc06
0.5
0.4
INPUT OFFSET VOLTAGE (mV)
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
-50
-25
0
25
50
75
2
INPUT CURRENT (nA)
0
-1
V
TRIP-
-2
100
-60 -40 -20 0
20 40 60 80 100 120 140
TEMPERATURE (°C)
100
TEMPERATURE (°C)
OUTPUT LOW VOLTAGE
vs. SINK CURRENT
MAX9107/08/09 toc07
OUTPUT HIGH VOLTAGE
vs. SOURCE CURRENT
MAX9107/08/09 toc08
PROPAGATION DELAY
vs. INPUT OVERDRIVE
R
S
= 10Ω
C
LOAD
= 15pF
PROPAGATION DELAY (ns)
30
t
PD+
25
MAX9107/08/09 toc09
0.5
T
A
= -55°C
0.4
T
A
= +25°C
V
OL
(V)
0.3
T
A
= +125°C
5.0
4.5
4.0
V
OH
(V)
3.5
3.0
T
A
= +125°C
35
20
t
PD-
0.2
2.5
0.1
0
2
4
6
I
SINK
(mA)
8
10
12
2.0
1
T
A
= +25°C
T
A
= -55°C
15
10
10
100
I
SOURCE
(µA)
1000
10
INPUT OVERDRIVE (mV)
100
4
________________________________________________________________________________________________
25ns, Dual/Quad/Single, Low-Power,
TTL Comparators
MAX9107/MAX9108/MAX9109
____________________________Typical Operating Characteristics (continued)
(V
CC
= 5V, V
CM
= 0, C
L
= 15pF, T
A
= +25°C, unless otherwise noted.)
PROPAGATION DELAY (t
PD+
)
MAX9107/08/09 toc10
PROPAGATION DELAY (t
PD-
)
INPUT
50mV/div
OVERDRIVE
10mV
MAX9107/08/09 toc11
INPUT
50mV/div
OVERDRIVE
10mV
OUTPUT
1V/div
OUTPUT
1V/div
10ns/div
5ns/div
SINUSOID 2MHz RESPONSE
MAX9107/08/09 toc12
PROPAGATION DELAY
vs. CAPACITIVE LOAD
V
OD
= 10mV
R
S
= 10Ω
PROPAGATION DELAY (ns)
35
MAX9107/08/09 toc13
40
INPUT
50mV/div
30
t
PD+
25
t
PD-
20
OUTPUT
1V/div
50ns/div
0
20
40
60
80
100
CAPACITIVE LOAD (pF)
PROPAGATION DELAY
vs. TEMPERATURE
MAX9107/08/09 toc14
PROPAGATION DELAY
vs. SOURCE IMPEDANCE
V
OD
= 5mV
C
LOAD
= 15pF
PROPAGATION DELAY (ns)
80
MAX9107/08/09 toc15
40
V
OD
= 10mV
R
S
= 10Ω
C
LOAD
= 15pF
30
t
PD+
100
PROPAGATION DELAY (ns)
60
40
t
PD+
20
20
t
PD-
10
-60 -40 -20 0
20 40 60 80 100 120 140
TEMPERATURE (°C)
0
10
100
1k
10k
SOURCE IMPEDANCE (Ω)
_________________________________________________________________________________________________
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