TSM921-TSM924
Ultra-Low-Power, Single/Dual-Supply Comparators
FEATURES
♦
Ultra-Low Quiescent Current Over Temperature
TSM921/TSM922: 4μA (total)
TSM923/TSM924: <2.5μA per comparator
♦
Single or Dual Power Supplies:
Single: +2.5V to +11V
Dual: ±1.25V to ±5.5V
♦
Input Voltage Range Includes Negative Supply
♦
12μs Propagation Delay at 10mV Overdrive
♦
Push-pull TTL/CMOS-Compatible Outputs
♦
Crowbar-Current-Free Switching
♦
Continuous Source Current Capability: 40mA
♦
Internal 1.182V ±1% Reference:
TSM921/TSM923/TSM924
♦
Adjustable Hysteresis: TSM921/TSM923
DESCRIPTION
The TSM921–TSM924 family of single/dual/quad,
low-voltage, micropower analog comparators is
electrically and form-factor identical to the MAX921-
MAX924 family of analog comparators. Ideal for 3V or
5V single-supply applications, the TSM921–TSM924
family can operate from single +2.5V to +11V
supplies or from ±1.25V to ±5.5V dual supplies. The
single TSM921 and the dual TSM922 draw less than
4μA (max) supply current over temperature. The dual
TSM923 and the quad TSM924 draw less than 2.5μA
per comparator over temperature.
All comparators in this family exhibit an input voltage
range from the negative supply rail to within 1.3V of
the positive supply. In addition, the comparators’
push-pull output stages are TTL/CMOS compatible
and capable of sinking and sourcing current. The
TSM921/TSM923/TSM924 each incorporates an
internal 1.182V ±1% voltage reference. Without
complicated feedback configurations and only
requiring two additional resistors, adding external
hysteresis via a separate pin is available on the single
TSM921 and the dual TSM923.
APPLICATIONS
Threshold Detectors
Window Comparator
Level Translators
Oscillator Circuits
Battery-Powered Systems
TYPICAL APPLICATION CIRCUIT
PART
A 5V, Low-Parts-Count Window Detector
TSM921
TSM922
TSM923
TSM924
INTERNAL COMPARATORS INTERNAL
REFERENCE PER PACKAGE HYSTERESIS
Yes
1
Yes
No
2
No
Yes
2
Yes
Yes
4
No
PART
TSM921C
TSM921E
TSM922C
TSM922E
TSM923C
TSM923E
TSM924C
TSM924E
TEMPERATURE
PACKAGE
RANGE
0ºC to 70ºC
8-Pin MSOP/SOIC
-40ºC to 85ºC
0ºC to 70ºC
8-Pin MSOP/SOIC
-40ºC to 85ºC
0ºC to 70ºC
8-Pin MSOP/SOIC
-40ºC to 85ºC
0ºC to 70ºC
16-Pin SOIC
-40ºC to 85ºC
Page 1
© 2014 Silicon Laboratories, Inc. All rights reserved.
TSM921-TSM924
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V+ to V-, V+ to GND, GND to V-)......-0.3V, +12V
Voltage Inputs
(IN+, IN-)..............................................(V+ + 0.3V) to (V- - 0.3V)
HYST…………………………………….(REF + 5V) to (V- - 0.3V)
Output Voltage
REF..................................................... (V+ + 0.3V) to (V- - 0.3V)
OUT (TSM921/24)...........................(V+ + 0.3V) to (GND - 0.3V)
OUT (TSM922/23)...............................(V+ + 0.3V) to (V- - 0.3V)
Input Current (IN+, IN-, HYST)..............................................20mA
Output Current
REF…………………………………………………………….20mA
OUT………………………………………………………...….50mA
Output Short-Circuit Duration (V+
≤
5.5V) ................Continuous
Continuous Power Dissipation (T
A
= +70°C)
8-Pin MSOP (derate 4.1mW/°C above +70°C) .................330mW
8-Pin SOIC (derate 5.88mW/°C above +70°C)..................471mW
16-Pin SOIC (8.7mW/°C above +70°C) ............................696mW
Operating Temperature Range
TSM92xC..................................................................0°C to +70°C
TSM92xE...............................................................-40°C to +85°C
Storage Temperature Range .................................-65°C to +150°C
Lead Temperature (soldering, 10s) ......................................+300°C
Electrical and thermal 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 condition beyond those indicated in the
operational sections of the specifications is not implied. Exposure to any absolute maximum rating conditions for extended periods may
affect device reliability and lifetime.
PACKAGE/ORDERING INFORMATION
ORDER NUMBER
PART
PART
CARRIER QUANTITY ORDER NUMBER
CARRIER QUANTITY
MARKING
MARKING
TSM921CSA+
Tube
TS921
TSM921CSA+T
TADK
TSM921ESA+
2500
TSM921ESA+T
TS921E
Tape
& Reel
Tube
Tape
& Reel
97
2500
97
2500
TSM921CUA+
Tube
50
TSM921CUA+T
Tape
& Reel
Page 2
TSM921/24 Rev. 1.0
TSM921-TSM924
PACKAGE/ORDERING INFORMATION
ORDER NUMBER
PART
PART
CARRIER QUANTITY ORDER NUMBER
CARRIER QUANTITY
MARKING
MARKING
TSM922CSA+
Tube
TS922
TSM922CSA+T
TABC
TSM922ESA+
2500
TSM922ESA+T
TS922E
Tape
& Reel
Tube
Tape
& Reel
97
2500
97
2500
TSM922CUA+
Tube
50
TSM922CUA+T
Tape
& Reel
ORDER NUMBER
PART
PART
CARRIER QUANTITY ORDER NUMBER
CARRIER QUANTITY
MARKING
MARKING
TSM923CSA+
Tube
TS923
TSM923CSA+T
TABA
TSM923ESA+
2500
TSM923ESA+T
TS923E
Tape
& Reel
Tube
Tape
& Reel
97
2500
97
2500
TSM923CUA+
Tube
50
TSM923CUA+T
Tape
& Reel
TSM921/24 Rev. 1.0
Page 3
TSM921-TSM924
PACKAGE/ORDERING INFORMATION
ORDER NUMBER
TSM924CSE+
PART
CARRIER QUANTITY
MARKING
Tube
TS924
Tape
& Reel
48
2500
ORDER
NUMBER
TSM924ESE+
PART
CARRIER QUANTITY
MARKING
Tube
TS924E
Tape
& Reel
48
2500
TSM924CSE+T
TSM924ESE+T
Lead-free Program:
Silicon Labs supplies only lead-free packaging.
Consult Silicon Labs for products specified with wider operating temperature ranges.
Page 4
TSM921/24 Rev. 1.0
TSM921-TSM924
ELECTRICAL CHARACTERISTICS – 5V OPERATION
V+ = 5V, V- = GND = 0V; T
A
= -40ºC to +85ºC, unless otherwise noted. Typical values are at T
A
= +25ºC. See Note 1.
PARAMETER
POWER REQUIREMENTS
Supply Voltage Range
CONDITIONS
See Note 2
TSM921;
HYST = REF
TSM922
Supply Current
IN+ = IN- + 100mV
TSM923
HYST = REF
TSM924
COMPARATOR
Input Offset Voltage
Input Leakage Current (IN-, IN+)
Input Leakage Current (HYST)
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio
Power-Supply Rejection Ratio
Voltage Noise
Hysteresis Input Voltage Range
Response Time
Output High Voltage
Output Low Voltage
REFERENCE
Reference Voltage
Source Current
Sink Current
Voltage Noise
100Hz to 100kHz
T
A
= 0°C to +70°C
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= -40°C to +85°C
1.170
1.158
15
6
8
4
1.182
25
15
100
1.194
1.206
V
V
μA
μA
μV
RMS
V
CM
= 2.5V
IN+ = IN- = 2.5V
TSM921, TSM923
V- to (V+ – 1.3V)
V+ = 2.5V to 11V
100Hz to 100kHz
TSM921, TSM923
Overdrive = 10 mV
T
A
= +25°C; 100pF load
Overdrive = 100 mV
T
A
= -40°C to +85°C: I
OUT
= 17mA
TSM922, TSM923 T
A
= -40°C to +85°C: I
OUT
= 1.8mA
TSM921, TSM924 T
A
= -40°C to +85°C: I
OUT
= 1.8mA
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= -40°C to +85°C
MIN
2.5
2.5
2.5
3.1
5.5
TYP
MAX
11
3.2
4
3.2
4
4.5
6
6.5
8.5
±10
±5
V+ – 1.3V
1
1
REF
12
4
V+ – 0.4
V- + 0.4
GND + 0.4
UNITS
V
μA
T
A
= -40°C to +85°C
V-
±0.01
±0.02
0.1
0.1
20
REF- 0.05V
mV
nA
nA
V
mV/V
mV/V
μV
RMS
V
μs
V
V
V
TSM921/24 Rev. 1.0
Page 5
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