Dual Differential Comparators
LM393
General Description
The LM393
consists of two independent precision
voltage comparators with an offset voltage specification as
low as 2.0 mV max for two comparators which were de-
signed specifically to operate from a single power supply
over a wide range of voltages. Operation from split power
supplies is also possible and the low power supply current
Features
drain is independent of the magnitude of the power supply
n
Wide supply
voltage. These comparators also have a unique characteris-
— Voltage range:
2.0V to 36V
tic in that the input common-mode voltage range includes
±
1.0V to
±
18V
— single or dual supplies:
ground, even though operated from a single power supply
n
Very low supply current drain (0.4 mA) — independent
voltage.
of supply voltage
Application areas include limit comparators, simple analog to
n
Low input biasing current:
25 nA
digital converters; pulse, squarewave and time delay gen-
±
5 nA
n
Low input offset current:
erators; wide range VCO; MOS clock timers; multivibrators
±
9m V
n
Maximum offset voltage:
and high voltage digital logic gates. The
LM393 was
n
Input common-mode voltage range includes ground
designed to directly interface with TTL and CMOS. When op-
erated from both plus and minus power supplies, the
WS393MX
n
Differential input voltage range equal to the power
supply voltage
will directly interface with MOS logic where their low
150
mV at 4 mA
n
Low output saturation voltage,:
power drain is a distinct advantage over standard compara-
tors.
n
Output voltage compatible with TTL, DTL, ECL, MOS
and CMOS logic systems
n
n
n
n
n
Reduced V
OS
drift over temperature
Eliminates need for dual supplies
Allows sensing near ground
Compatible with all forms of logic
Power drain suitable for battery operation
Advantages
n
High precision comparators
Pin Configuration
DIP-8
LM393N
SOP-8
LM393M
Wing Shing Computer Components Co., (H.K.)Ltd.
Homepage:
http://www.wingshing.com
Tel:(852)2341 9276 Fax:(852)2797 8153
E-mail: wsccltd@hkstar.com
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