NSC LM161H-883 Datasheet
LM161/LM261/LM361
High Speed Differential Comparators
LM161/LM261/LM361 High Speed Differential Comparators
May 1999
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 voltage. Typically delay varies only 3 ns for over-drive variations
of 5 mV to 500 mV. It may be operated fromopamp supplies
±
(
15V).
Complementary outputs having maximum skew are provided. Applications involve high speed analog to digital converters and zero-crossing detectors in disk file systems.
Connection Diagrams
Dual-In-Line Package
DS005708-2
Top View
Order Number LM161J
See NS Package Number M14A or N14A
Note 1: Also available per SMD#5962-8757203
LM361M or LM361N
Features
n Independent strobes
n Guaranteed high speed: 20 ns max
n Tight delay matching on both outputs
n Complementary TTL outputs
n Operates from op amp supplies:
n Low speed variation with overdrive variation
n Low input offset voltage
n Versatile supply voltage range
Metal Can Package
Order Number LM161H/883 (Note 1), or LM361H
See NS Package Number H10C
±
15V
DS005708-3
© 1999 National Semiconductor Corporation DS005708 www.national.com
Logic Diagram
*
Output is low when current is drawn from strobe pin.
DS005708-4
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Absolute Maximum Ratings (Note 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Positive Supply Voltage, V
Negative Supply Voltage, V
Gate Supply Voltage, V
Output Voltage +7V
Differential Input Voltage
Input Common Mode Voltage
Power Dissipation 600 mW
Storage Temperature Range −65˚C to +150˚C
Operating Temperature Range T
LM161 −55˚C to +125˚C
LM261 −25˚C to +85˚C
LM361 0˚C to +70˚C
Lead Temp. (Soldering, 10 seconds) 260˚C
For Any Device Lead Below V
+
−
CC
+16V
−16V
+7V
±
±
MINTMAX
−
0.3V
Operating Conditions
Supply Voltage V
+
LM161/LM261 5V 15V
LM361 5V 15V
Supply Voltage V
−
LM161/LM261 −6V −15V
5V
6V
LM361 −6V −15V
Supply Voltage V
CC
LM161/LM261 4.5V 5V 5.5V
LM361 4.75V 5V 5.25V
ESD Tolerance (Note 6) 1600V
Soldering Information
Dual-In-Line Package
Soldering (10 seconds) 260˚C
Small Outline Package
Vapor Phase (60 seconds) 215˚C
Infrared (15 seconds) 220˚C
Min Typ Max
See AN-450 “Surface Mounting Methodsand Their Effect on
Product Reliability” for other methods of soldering surface
mount devices.
Electrical Characteristics
+
=
(V
+10V, V
CC
=
+5V, V
−
=
−10V, T
MIN
≤ TA≤ T
, unless noted)
MAX
Limits
Parameter Conditions LM161/LM261 LM361 Units
Min Typ Max Min Typ Max
Input Offset Voltage 1 3 1 5 mV
=
Input Bias Current T
25˚C 5 10 µA
A
20 30 µA
Input Offset Current T
=
25˚C 2 2 µA
A
35µA
Voltage Gain T
Input Resistance T
Logical “1” Output Voltage V
Logical “0” Output Voltage V
Strobe Input “1” Current V
(Output Enabled) V
Strobe Input “0” Current V
(Output Disabled) V
Strobe Input “0” Voltage V
Strobe Input “1” Voltage V
Output Short Circuit Current V
Supply Current I
Supply Current I
Supply Current I
+
+
−
=
25˚C 3 3 V/mV
A
=
25˚C, f=1 kHz 20 20 kΩ
A
=
4.75V, 2.4 3.3 2.4 3.3 V
CC
=
I
I
V
V
−55˚C≤T
V
V
0˚C≤T
V
V
−55˚C≤T
−0.5 mA
SOURCE
=
4.75V, 0.4 0.4 V
CC
=
6.4 mA
SINK
=
5.25V, 200 200 µA
CC
=
2.4V
STROBE
=
5.25V, −1.6 −1.6 mA
CC
=
0.4V
STROBE
=
4.75V 0.8 0.8 V
CC
=
4.75V 2 2 V
CC
=
5.25V, V
CC
+
=
10V, V
=
5.25V,
CC
+
=
10V, V
=
5.25V,
CC
≤70˚C
A
+
=
10V, V
=
5.25V,
CC
−
=
≤125˚C
A
−
=
−
=
≤125˚C
A
=
0V −18 −55 −18 −55 mA
OUT
−10V,
4.5 mA
−10V,
−10V,
10 mA
5mA
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