NSC LM6511IMX, LM6511IM Datasheet
LM6511
180 ns 3V Comparator
LM6511 180 ns 3V Comparator
June 1999
General Description
The LM6511voltagecomparatorisidealforanalog-digitalinterface circuitry when only a +3V or +3.3V supply is available. The open-collector output permits signal compatibility
with a wide variety of digital families: +5V CMOS, +3V
CMOS, TTL and so on. Supply voltage may range from 2.7V
to 36V between supply voltage leads. The LM6511 operates
with little power consumption (P
+2.7V and V
This voltage comparator offers many features that are available in traditional sub-microsecond comparators: output
sync strobe, inputs and output may be isolated from system
ground, and wire-ORing. Also, the LM6511 uses the
industry-standard, single comparator pinout configuration.
−
=
0V).
<
diss
9.45 mW at V
+
Connection Diagram
8-Pin SO
Ordering Information
Package Industrial Temperature Range NSC Package
8-Pin Small Outline LM6511IM M08A
Features
(Typical unless otherwise noted)
n Operates at +2.7V, +3V, +3.3V, +5V
n Low Power consumption
n Fast Response Time of 180 ns
Applications
=
n Portable Equipment
n Cellular Phones
n Digital Level Shifting
−40˚C to +85˚C Drawing
DS011888-1
<
9.45 mW@V
+
=
2.7V (max)
© 1999 National Semiconductor Corporation DS011888 www.national.com
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage −0.3 to +36V
Output to Negative Supply Voltage 50V
Ground to Negative Supply Voltage 30V
Differential Input Voltage
Input Voltage (Note 2)
Storage Temperature Range −65˚C to +150˚C
Soldering Information:
SO Package
(Vapor Phase in 60 sec)
SO Package (Infrared in 15 sec)
±
30V
215˚C
220˚C
Power Dissipation 500 mW
Output Short Circuit Duration 10s
Junction Temperature 150˚C
ESD Rating
(C=+100 pF, R=1.5 kΩ) 300V
Operating Ratings (Note 1)
Supply Voltage 2.5V to 30V
Temperature Range −40˚C ≤ T
Thermal Resistance (θ
)
JA
SO Package 170˚C/W
≤ +85˚C
J
DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ= 25˚C. Boldface limits apply at the temperature extremes. V+= 2.7V,
V−= 0V, 50Ω≤RL≤50kΩ, and IL= 1.0 mA unless otherwise specified
Symbol Parameter Conditions Typical LM6511I Units
Limit
V
OS
Offset Voltage RS≤ 50 kΩ 1.5 5 mV
(Note 3) 8 max
I
B
Input Bias Current 38 130
200 nA
I
OS
Input Offset Current RS≤ 50 kΩ 1.5 20
(Note 3) 50
I
S
Positive Supply Current 2.7 3.5
5 mA
Negative Supply Current 1.5 2.0
2.5
V
SAT
A
V
Saturation Voltage VIN≤ 10 mV 0.23 0.4 V
=
I
8mA 0.4 max
SINK
Large Signal Voltage Gain ∆V
=
2V 40 V/mV
OUT
CMRR Common Mode Rejection Ratio 72 dB
I
STROBE
V
IN
Strobe ON Current (Note 5) 2.0 5.0 mA max
Input Voltage Range 0.50 V min
+
V
− 1.25 V max
Output Leakage Current V
≥ 10 mV, V
IN
I
STROBE
=
=
35V, 0.2 nA
OUT
3 mA max
(Limits)
max
max
AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ= 25˚C. Boldface limits apply at the temperature extremes. V+= 2.7V,
V−= 0V, 50Ω≤RL≤50kΩ, and IL= 1.0 mA unless otherwise specified
Symbol Parameter Conditions Typical LM6511I Units
Limit
T
R
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating ratings indicate conditions the device is intended to
be functional, butdo not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed
specifications apply only for the test conditions listed.
Note 2: The positive input voltage limit is 30V above the negative supply voltage. The negative input voltage limit is equal to the negative supply voltage or 30V below
the positive supply voltage, whichever is less.
Note 3: The offset voltage and offset current limits are the maximum values required to drive the output within a volt of either supply witha1mAload. Therefore,
these parameters define an error band and take into account the worst-case effects of voltage gain and input impedance.
Note 4: This specification is for a 100 mV input step with a 25 mV overdrive.
Note 5: This specification gives the range of current which must be drawn from the strobe pin to ensure the output is properly disabled. Do not short the strobe pin
to ground; it should be current driven at 3 mA to 5 mA.
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Response Time (Note 4) 180 ns
(Limits)
Schematic Diagram
LM6511 Typical Performance Characteristics
Input Bias Current
DS011888-8
Input Offset Current
=
V
3V unless otherwise noted
S
DS011888-9
DS011888-5
Input Current vs
Input Voltage
DS011888-10
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