MAX9107/MAX9108/MAX9109
25ns, Dual/Quad/Single, Low-Power,
TTL Comparators
________________________________________________________________ Maxim Integrated Products 1
TOP VIEW
1
2
3
4
5
6
7
8
SO
N.C.
OUT
GND
LE
V
CC
IN+
IN-
N.C.
MAX9109
1
2
3
4
5
6
7
8
SOT23/SO
V
CC
OUTB
INB-
INB+
OUTA
INA-
INA+
GND
MAX9107
14
13
12
11
10
9
8
1
2
3
4
5
6
7
OUTD
IND-
IND+
GNDV
CC
INA+
INA-
OUTA
MAX9108
INC+
INC-
OUTCOUTB
INB-
INB+
TSSOP/SO
A
D
B
C
GND
IN-IN+
16V
CC
5 LE
OUT
MAX9109
SC70/SOT23
2
34
Pin Configurations
19-2045; Rev. 2; 1/07
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.
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)
Space-Saving Packages:
6-Pin SC70 (MAX9109)
8-Pin SOT23 (MAX9107)
14-Pin TSSOP (MAX9108)
Ordering Information
PART
PIN-
PACKAGE
TOP
MARK
PKG
CODE
MAX9107EKA-T 8 SOT23-8 AAIB K8-5
MAX9107ESA 8 SO S8-2
MAX9108EUD 14 TSSOP U14-1
MAX9108ESD 14 SO S14-1
MAX9109EXT-T 6 SC70-6 AAU X6S-1
MAX9109EUT-T 6 SOT23-6 AARU U6-1
MAX9109ESA 8 SO S8-2
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.
Note: All devices are specified over the -40°C to +85°C operat-
ing temperature range.
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)
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
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)
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, C
L
= 10pF
V
OUT
= 0.4V to 2.4V, C
L
= 10pF
I
SINK
= 8mA
I
SINK
= 3.2mA
I
SOURCE
= 100µA
4.5V V
CC
5.5V
V
CC
= 5.5V (Note 5)
T
A
= +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 V
CC
- 1.5 V
mASupply Current Per Comparator V
CC
= +5.5V, all outputs low
I
CC
0.35 0.7
Input Offset Voltage
V
OS
T
A
= 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)
(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)
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+,
t
PD-
t
PD
t
PD
skew
V
IH
V
IL
I
IH
, I
IL
t
s
t
h
(Note 8)
(Note 8)
(Note 8)
(Note 8)
(Note 8)
V
IN
= 100mV, V
OD
= 10mV
(Note 7)
V
IN
= 100mV, V
OD
= 10mV
(Note 6)
V
IN
= 100mV, V
OD
= 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 T
A
= +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.

MAX9109ESA+T

Mfr. #:
Manufacturer:
Maxim Integrated
Description:
Analog Comparators Single TTL Comparator
Lifecycle:
New from this manufacturer.
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