LM160/LM360
High Speed Differential Comparator
General Description
The LM160/LM360 is a very high speed differential input,
complementary TTL output voltage comparator with im-
proved characteristics over the µA760/µA760C, for which it
is a pin-for-pin replacement. The device has been optimized
for greater speed, input impedance and fan-out, and lower
input offset voltage. Typically delay varies only 3 ns for
overdrive variations of 5 mV to 400 mV.
Complementary outputs having minimum skew are provided.
Applications involve high speed analog to digital convertors
and zero-crossing detectors in disk file systems.
Features
nGuaranteed high speed: 20 ns max
nTight delay matching on both outputs
nComplementary TTL outputs
nHigh input impedance
nLow speed variation with overdrive variation
nFan-out of 4
nLow input offset voltage
nSeries 74 TTL compatible
Connection Diagrams
Metal Can Package
00570704
Order Number LM160H/883 (Note 1)
See NS Package Number H08C
Dual-In-Line Package
00570705
Order Number LM360M, LM360MX or LM360N
See NS Package Number M08A or N08E
Note 1: Also available in SMD# 5962-8767401
August 2000
LM160/LM360 High Speed Differential Comparator
© 2004 National Semiconductor Corporation DS005707 www.national.com
Absolute Maximum Ratings (Notes 6, 8)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Positive Supply Voltage +8V
Negative Supply Voltage −8V
Peak Output Current 20 mA
Differential Input Voltage ±5V
Input Voltage V
+
≥V
IN
≥V
−
ESD Tolerance (Note 9) 1600V
Operating Temperature Range
LM160 −55˚C to +125˚C
LM360 0˚C to +70˚C
Storage Temperature Range −65˚C to +150˚C
Lead Temperature
(Soldering, 10 sec.) 260˚C
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
See AN-450 “Surface Mounting Methods and Their Effect
on Product Reliability” for other methods of soldering
surface mount devices.
Electrical Characteristics
(T
MIN
≤T
A
≤T
MAX
)
Parameter Conditions Min Typ Max Units
Operating Conditions
Supply Voltage V
CC+
4.5 5 6.5 V
Supply Voltage V
CC−
−4.5 −5 −6.5 V
Input Offset Voltage R
S
≤200Ω25mV
Input Offset Current 0.5 3 µA
Input Bias Current 520µA
Output Resistance (Either Output) V
OUT
=V
OH
100 Ω
Response Time T
A
= 25˚C, V
S
=±5V (Notes 2, 7) 13 25 ns
T
A
= 25˚C, V
S
=±5V (Notes 3, 7) 12 20 ns
T
A
= 25˚C, V
S
=±5V (Notes 4, 7) 14 ns
Response Time Difference between Outputs
(t
pd
of +V
IN1
)−(t
pd
of −V
IN2
)T
A
= 25˚C (Notes 2, 7) 2 ns
(t
pd
of +V
IN2
)−(t
pd
of −V
IN1
)T
A
= 25˚C (Notes 2, 7) 2 ns
(t
pd
of +V
IN1
)−(t
pd
of +V
IN2
)T
A
= 25˚C (Notes 2, 7) 2 ns
(t
pd
of −V
IN1
)−(t
pd
of −V
IN2
)T
A
= 25˚C (Notes 2, 7) 2 ns
Input Resistance f = 1 MHz 17 kΩ
Input Capacitance f = 1 MHz 3 pF
Average Temperature Coefficient of R
S
=50Ω8 µV/˚C
Input Offset Voltage
Average Temperature Coefficient of 7 nA/˚C
Input Offset Current
Common Mode Input Voltage Range V
S
=±6.5V ±4±4.5 V
Differential Input Voltage Range ±5V
Output High Voltage (Either Output) I
OUT
= −320 µA, V
S
=±4.5V 2.4 3 V
Output Low Voltage (Either Output) I
SINK
= 6.4 mA 0.25 0.4 V
Positive Supply Current V
S
=±6.5V 18 32 mA
Negative Supply Current V
S
=±6.5V −9 −16 mA
Note 2: Response time measured from the 50% point of a 30 mVp-p 10 MHz sinusoidal input to the 50% point of the output.
Note 3: Response time measured from the 50% point of a 2 Vp-p 10 MHz sinusoidal input to the 50% point of the output.
LM160/LM360
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Electrical Characteristics (Continued)
Note 4: Response time measured from the start of a 100 mV input step with 5 mV overdrive to the time when the output crosses the logic threshold.
Note 5: Typical thermal impedances are as follows:
Cavity DIP (J): θ
jA
135˚C/W Header (H) θ
jA
165˚C/W (Still Air)
Molded DIP (N): θ
jA
130˚C/W 67˚C/W (400 LF/min Air
Flow)
θ
jC
25˚C/W
Note 6: The device may be damaged if used beyond the maximum ratings.
Note 7: Measurements are made in AC Test Circuit, Fanout = 1
Note 8: Refer to RETS 160X for LM160H, LM160J-14 and LM160J military specifications.
Note 9: Human body model, 1.5 kΩin series with 100 pF.
Typical Performance Characteristics
Offset Voltage
Input Current vs Ambient
Temperature
00570708 00570709
Input Characteristics
Supply Current vs Ambient
Temperature
00570710 00570711
LM160/LM360
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Typical Performance Characteristics (Continued)
Propagation Delay vs
Ambient Temperature
Delay of Output 1 With
Respect to Output 2 vs
Ambient Temperature
00570712 00570713
Common-Mode
Pulse Response
00570714
AC Test Circuit
00570703
V
IN
=±50 mV FANOUT=1 FANOUT=4
V
+
=+5V R=2.4k R=630Ω
V
−
=−5V C=15 pF C=30 pF
LM160/LM360
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Schematic Diagram
00570701
LM160/LM360
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Physical Dimensions inches (millimeters)
unless otherwise noted
Metal Can Package (H)
Order Number LM160H/883
NS Package Number H08C
LM160/LM360
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
Molded Dual-In-Line Package (M)
Order Number LM360M or LM360MX
NS Package Number M08A
LM160/LM360
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
Molded Dual-In-Line Package (N)
Order Number LM360N
NS Package Number N08E
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves
the right at any time without notice to change said circuitry and specifications.
For the most current product information visit us at www.national.com.
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LM160/LM360 High Speed Differential Comparator
