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STMicroelectronics
STMicroelectronics

LM293W Datasheet

Low power dual voltage comparators


LM293W Datasheet Preview


LM193W, LM293W, LM393W
Low power dual voltage comparators
Features
Wide single supply voltage range or dual
supplies: +2 V to +36 V or ±1 V to ±18 V
Very low supply current (0.4 mA) independent
of supply voltage (1 mW/comparator at +5 V)
Low input bias current: 25 nA typ
Low input offset current: ±5 nA typ
Low input offset voltage: ±1 mV typ
Input common-mode voltage range includes
ground
Low output saturation voltage: 250 mV typ.
(Io = 4 mA)
Differential input voltage range equal to the
supply voltage
TTL, DTL, ECL, MOS, CMOS compatible
outputs
ESD internal protection: 2 kV
Description
These devices consist of two independent low
voltage comparators designed specifically to
operate from a single supply over a wide range of
voltages. Operation from split power supplies is
also possible.
These comparators also have a unique
characteristic in that the input common-mode
voltage range includes ground even though
operated from a single power supply voltage.
All the pins are protected against electrostatic
discharge up to 2 kV. As a consequence, the input
voltages must not exceed the magnitude of VCC+
or VCC-.
DIP8
(Plastic package)
SO8
(Plastic micropackage)
TSSOP8
(Thin shrink small outline package)
Pin connections
(Top view)
1 - Output 1
2 - Inverting input 1
3 - Non-inverting input 1
4 - VCC-
5 - Non-inverting input 2
6 - Inverting input 2
7 - Output 2
8 - VCC+
December 2008
Rev 2
1/15
www.st.com
15
Page 1

Schematic diagram
1 Schematic diagram
LM193W, LM293W, LM393W
Figure 1. Circuit schematic (1/2 LM193W)
VCC+
3.5µA
100µA
3.5µA
100µA
VCC+
Non-Inverting
Input
Inverting
Input
VCC-
VCC-
VCC+
VCC-
VCC-
Vo
VCC-
2/15
Page 2

LM193W, LM293W, LM393W
Absolute maximum ratings and operating conditions
2 Absolute maximum ratings and operating conditions
Table 1.
Symbol
Absolute maximum ratings
Parameter
Value
Unit
VCC
Vid
Vin
Rthja
Rthjc
Supply voltage
Differential input voltage
Input voltage
Output short-circuit to ground (1)
Thermal resistance junction to ambient(2)
SO-8
TSSOP8
DIP8
Thermal resistance junction to case(2)
SO-8
TSSOP8
DIP8
±18 or 36
VCC- -0.3 to VCC+ +0.3
Infinite
125
120
85
40
37
41
V
V
°C/W
°C/W
Tj
Tstg
ESD
Junction temperature
Storage temperature range
HBM: human body model(3)
MM: machine model(4)
CDM: charged device model(5)
150
-65 to +150
2000
200
1500
°C
°C
V
1.
Short-circuits from the output to VCC+ can cause excessive heating
maximum output current is approximately 20mA independent of the
and eventual
magnitude of
destruction.
VCC+.
The
2. Short-circuits can cause excessive heating and destructive dissipation. Values are typical.
3. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a
1.5kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations
while the other pins are floating.
4. Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between
two pins of the device with no external series resistor (internal resistor < 5 Ω). This is done for all couples of
connected pin combinations while the other pins are floating.
5. Charged device model: all pins and the package are charged together to the specified voltage and then
discharged directly to the ground through only one pin. This is done for all pins.
Table 2. Operating conditions
Symbol
Parameter
Vicm
Toper
Common mode input voltage range
Operating free-air temperature range
LM193W
LM293W
LM393W
Value
0 to VCC+ -1.5
-55 to +125
-40 to +105
0 to +70
Unit
V
°C
3/15
Page 3
Part Number LM293W
Manufactur STMicroelectronics
Description Low power dual voltage comparators
Total Page 15 Pages
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