Differential Comparators. LM261 Datasheet

LM261 Comparators. Datasheet pdf. Equivalent

Part LM261
Description High Speed Differential Comparators
Feature LM161 LM261 LM361 High Speed Differential Comparators November 1994 LM161 LM261 LM361 High Speed .
Manufacture National Semiconductor
Datasheet
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LM261
November 1994
LM161 LM261 LM361
High Speed Differential Comparators
General Description
The LM161 LM261 LM361 is a very high speed differential
input complementary TTL output voltage comparator with
improved characteristics over the SE529 NE529 for which it
is a pin-for-pin replacement The device has been optimized
for greater speed performance and lower input offset volt-
age Typically delay varies only 3 ns for over-drive variations
of 5 mV to 500 mV It may be operated from op amp sup-
plies (g15V)
Complementary outputs having maximum skew are provid-
ed Applications involve high speed analog to digital con-
verters and zero-crossing detectors in disk file systems
Features
Y Independent strobes
Y Guaranteed high speed
20 ns max
Y Tight delay matching on both outputs
Y Complementary TTL outputs
Y Operates from op amp supplies
g15V
Y Low speed variation with overdrive variation
Y Low input offset voltage
Y Versatile supply voltage range
Connection Diagrams
Dual-In-Line Package
Metal Can Package
TL H 5708 – 2
Top View
Order Number LM161J LM161J 883
LM361M or LM361N
See NS Package Number J14A M14A or N14A
Also available per SMD 5962-8757203
Logic Diagram
TL H 5708 – 3
Order Number LM161H 883 or LM361H
See NS Package Number H10C
Output is
low when
current is
drawn from
strobe pin
C1995 National Semiconductor Corporation TL H 5708
TL H 5708 – 4
RRD-B30M115 Printed in U S A



LM261
Absolute Maximum Ratings (Note 1)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
(Note 4)
Positive Supply Voltage Va
a16V
Negative Supply Voltage Vb
b16V
Gate Supply Voltage VCC
Output Voltage
a7V
a7V
Differential Input Voltage
g5V
Input Common Mode Voltage
g6V
Power Dissipation
600 mW
Storage Temperature Range
b65 C to a150 C
Operating Temperature Range
LM161
LM261
LM361
TMIN TMAX
b55 C to a125 C
b25 C to a85 C
0 C to a70 C
Lead Temp (Soldering 10 seconds)
260 C
For Any Device Lead Below Vb
0 3V
Operating Conditions
Supply Voltage Va
LM161 LM261
LM361
Min Typ Max
5V 15V
5V 15V
Supply Voltage Vb
LM161 LM261
LM361
b6V
b6V
b15V
b15V
Supply Voltage VCC
LM161 LM261
4 5V 5V 5 5V
LM361
4 75V 5V 5 25V
ESD Tolerance (Note 5)
1600V
Soldering Information
Dual-In-Line Package
Soldering (10 seconds)
Small Outline Package
Vapor Phase (60 seconds)
Infrared (15 seconds)
260 C
215 C
220 C
See AN-450 ‘‘Surface Mounting Methods and Their Effect
on Product Reliability’’ for other methods of soldering sur-
face mount devices
Electrical Characteristics (Va e a10V VCC e a5V Vb e b10V TMIN s TA s TMAX unless noted)
Limits
Parameter
Conditions
LM161 LM261
LM361
Units
Min Typ Max
Min Typ Max
Input Offset Voltage
13
1 5 mV
Input Bias Current
TAe25 C
5
20
10
30
mA
mA
Input Offset Current
TAe25 C
2
3
2 mA
5 mA
Voltage Gain
TAe25 C
3 3 V mV
Input Resistance
TAe25 C fe1 kHz
20
20 kX
Logical ‘‘1’’ Output Voltage
VCCe4 75V
ISOURCEeb0 5 mA
24 33
24 33
V
Logical ‘‘0’’ Output Voltage
VCCe4 75V
ISINKe6 4 mA
04 04 V
Strobe Input ‘‘1’’ Current
(Output Enabled)
VCCe5 25V
VSTROBEe2 4V
200 200 mA
Strobe Input ‘‘0’’ Current
(Output Disabled)
VCCe5 25V
VSTROBEe0 4V
b1 6
b1 6
mA
Strobe Input ‘‘0’’ Voltage
VCCe4 75V
08 08 V
Strobe Input ‘‘1’’ Voltage
VCCe4 75V
2
2
V
Output Short Circuit Current VCCe5 25V VOUTe0V b18
b55
b18
b55
mA
2





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