May 1999
LM160/LM360
High Speed Differential Comparator
General Description
The LM160/LM360 is a very high speed differential input, complementary TTL output voltage comparator with improved 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 |
Dual-In-Line Package |
|
DS005707-4
DS005707-5
Order Number LM160H/883 (Note 1) or LM360H
See NS Package Number H08C Order Number LM360M or LM360N See NS Package Number M08A or N08E
Note 1: Also available in SMD# 5962-8767401
Comparator Differential Speed High LM160/LM360
© 1999 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+ ³ VIN ³ V− |
ESD Tolerance (Note 9) |
1600V |
Operating Temperature Range |
|
LM160 |
−55ÊC to +125ÊC |
LM360 |
0ÊC to +70ÊC |
Storage Temperature Range |
−65ÊC to +150ÊC |
Lead Temperature |
|
(Soldering, 10 sec.) |
260ÊC |
Soldering Information |
|
Dual-In-Line Package |
|
Soldering (10 seconds) |
260ÊC |
Small Outline Package |
|
Vapor Phase (60 seconds) |
215ÊC |
Infrared (15 seconds) |
220ÊC |
See AN-450 ªSurface Mounting Methods and Their Effect on Product Reliabilityº for other methods of soldering surface mount devices.
Electrical Characteristics
(TMIN £ TA £ TMAX)
Parameter |
Conditions |
Min |
Typ |
Max |
Units |
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Operating Conditions |
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+ |
|
4.5 |
5 |
6.5 |
V |
Supply Voltage VCC |
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||||
− |
|
−4.5 |
−5 |
−6.5 |
V |
Supply Voltage VCC |
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||||
Input Offset Voltage |
RS £ 200W |
|
2 |
5 |
mV |
Input Offset Current |
|
|
0.5 |
3 |
µA |
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|
|
Input Bias Current |
|
|
5 |
20 |
µA |
Output Resistance (Either Output) |
VOUT = VOH |
|
100 |
|
W |
Response Time |
TA = 25ÊC, VS = ±5V (Notes 2, 7) |
|
13 |
25 |
ns |
|
TA = 25ÊC, VS = ±5V (Notes 3, 7) |
|
12 |
20 |
ns |
|
TA = 25ÊC, VS = ±5V (Notes 4, 7) |
|
14 |
|
ns |
Response Time Difference between Outputs |
|
|
|
|
|
(tpd of +VIN1) − (t pd of −V IN2) |
TA = 25ÊC (Notes 2, 7) |
|
2 |
|
ns |
(tpd of +VIN2) − (t pd of −V IN1) |
TA = 25ÊC (Notes 2, 7) |
|
2 |
|
ns |
(tpd of +VIN1) − (t pd of +VIN2) |
TA = 25ÊC (Notes 2, 7) |
|
2 |
|
ns |
(tpd of −V IN1) − (t pd of −V IN2) |
TA = 25ÊC (Notes 2, 7) |
|
2 |
|
ns |
Input Resistance |
f = 1 MHz |
|
17 |
|
kW |
|
|
|
|
|
|
Input Capacitance |
f = 1 MHz |
|
3 |
|
pF |
|
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|
|
Average Temperature Coefficient of |
RS = 50W |
|
8 |
|
µV/ÊC |
Input Offset Voltage |
|
|
|
|
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|
|
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|
|
Average Temperature Coefficient of |
|
|
7 |
|
nA/ÊC |
Input Offset Current |
|
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|
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|
|
|
|
Common Mode Input Voltage Range |
VS = ±6.5V |
±4 |
±4.5 |
|
V |
Differential Input Voltage Range |
|
±5 |
|
|
V |
|
|
|
|
|
|
Output High Voltage (Either Output) |
IOUT = −320 µA, V S = ±4.5V |
2.4 |
3 |
|
V |
Output Low Voltage (Either Output) |
ISINK = 6.4 mA |
|
0.25 |
0.4 |
V |
Positive Supply Current |
VS = ±6.5V |
|
18 |
32 |
mA |
Negative Supply Current |
VS = ±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.
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): |
θjA |
135ÊC/W |
Header (H) |
θjA |
165ÊC/W |
(Still |
Air) |
Molded DIP (N): |
θjA |
130ÊC/W |
|
|
67ÊC/W |
(400 |
LF/min Air Flow) |
|
|
|
|
θjC |
25ÊC/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.
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2 |
Electrical Characteristics (Continued)
Note 9: Human body model, 1.5 kΩ in series with 100 pF.
Typical Performance Characteristics
Offset Voltage |
Input Current vs Ambient |
Input Characteristics |
|
Temperature |
|
|
DS005707-8 |
DS005707-10 |
|
|
DS005707-9 |
Supply Current vs Ambient |
Propagation Delay vs |
Delay of Output 1 With |
Temperature |
Ambient Temperature |
Respect to Output 2 vs |
|
|
Ambient Temperature |
DS005707-11 |
DS005707-12 |
DS005707-13
Common-Mode
Pulse Response
DS005707-14
3 |
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