LP211, LP311
LOW-POWER DIFFERENTIAL COMPARATORS
WITH STROBES
SLCS003D − JUNE 1987 − REVISED SEPTEMBER 2003
D Low Power Drain . . . 900 μW Typical With
D
D
D
D
D
D
D
D
D
LP211 . . . D PACKAGE
LP311 . . . D, P, OR PS PACKAGE
(TOP VIEW)
5-V Supply
Operates From ±15 V or From a Single
Supply as Low as 3 V
Output Drive Capability of 25 mA
Emitter Output Can Swing Below Negative
Supply
Response Time . . . 1.2 μs Typ
Low Input Currents:
Offset Current . . . 2 nA Typ
Bias Current . . . 15 nA Typ
Wide Common-Mode Input Range:
−14.5 V to 13.5 V Using ±15-V Supply
Offset Balancing and Strobe Capability
Same Pinout as LM211, LM311
Designed To Be Interchangeable With
Industry-Standard LP311
EMIT OUT
IN+
IN−
VCC−
1
8
2
7
3
6
4
5
VCC+
COL OUT
BAL/STRB
BALANCE
description/ordering information
The LP211 and LP311 devices are low-power versions of the industry-standard LM211 and LM311 devices.
They take advantage of stable, high-value, ion-implanted resistors to perform the same function as the LM311
series, with a 30:1 reduction in power consumption, but only a 6:1 slowdown in response time. They are well
suited for battery-powered applications and all other applications where fast response times are not needed.
They operate over a wide range of supply voltages, from ±18 V down to a single 3-V supply with less than 300-μA
current drain, but are still capable of driving a 25-mA load. The LP211 and LP311 are quite easy to apply free
of oscillation if ordinary precautions are taken to minimize stray coupling from the output to either input or to the
trim pins. In addition, offset balancing is available to minimize input offset voltage. Strobe capability also is
provided to turn off the output (regardless of the inputs) by pulling the strobe pin low.
The LP211 is characterized for operation from −25°C to 85°C. The LP311 is characterized for operation from
0°C to 70°C.
ORDERING INFORMATION
TA
VIO max
AT 25°C
PACKAGE†
PDIP (P)
−0°C
0°C to 70°C
7 5 mV
7.5
SOIC (D)
SOP (PS)
−25°C
25°C to 85°C
†
7 5 mV
7.5
SOIC (D)
ORDERABLE
PART NUMBER
Tube of 50
LP311P
Tube of 75
LP311D
Reel of 2500
LP311DR
Reel of 2000
LP311PSR
Tube of 75
LP211D
Reel of 2500
LP211DR
TOP-SIDE
MARKING
LP311P
LP311
L311
LP211
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines
are available at www.ti.com/sc/package.
Copyright © 2003, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
LP211, LP311
LOW-POWER DIFFERENTIAL COMPARATORS
WITH STROBES
SLCS003D − JUNE 1987 − REVISED SEPTEMBER 2003
functional block diagram
BALANCE
BAL/STRB
IN+
COL OUT
IN−
EMIT OUT
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage (see Note 1): VCC+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V
VCC− . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −18 V
Differential input voltage, VID (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±30 V
Input voltage, VI (either input, see Notes 1 and 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±15 V
Voltage from emitter output to VCC− . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 V
Voltage from collector output to VCC− . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V
Voltage from collector output to emitter output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V
Duration of output short circuit (see Note 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V
Package thermal impedance, θJA (see Notes 5 and 6): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W
P package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85°C/W
PS package . . . . . . . . . . . . . . . . . . . . . . . . . . . 95°C/W
Operating virtual junction temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
†
Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated in the recommended operating conditions section of this
specification is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltage values, unless otherwise noted, are with respect to the midpoint between VCC+ and VCC−.
2. Differential input voltages are at IN+ with respect to IN−.
3. The magnitude of the input voltage must never exceed the magnitude of the supply voltage of ±15 V, whichever is less.
4. The output may be shorted to ground or to either power supply.
5. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable
ambient temperature is PD = (TJ(max) − TA)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability.
6. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions
MIN
2
(|VCC±| ≤ 15 V)
Input voltage
VCC+ − VCC−
Supply voltage
VCC− + 0.5
3.5
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
MAX
UNIT
VCC+ − 1.5
V
30
V
LP211, LP311
LOW-POWER DIFFERENTIAL COMPARATORS
WITH STROBES
SLCS003D − JUNE 1987 − REVISED SEPTEMBER 2003
electrical characteristics at specified free-air temperature, VCC± = ±15 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
TA
MIN
25°C
VID
VOL
Input offset voltage
Low-level output voltage
RS < 100 kΩ,
kΩ
See Note 7
VID < −10
10 mV,
See Note 8
IOL = 25 mA,
VCC = 4.5 V,
VID < −10
10 mV,
mV
See Note 8
VCC− = 0,
IOL = 1
1.6
6 mA
mA,
Input offset current
IIB
Input bias current
See Note 7
MAX
2
7.5
Full range
10
25°C
04
0.4
1
5
1.5
Full range
01
0.1
0
0.4
4
2
25
UNIT
mV
V
25°C
IIO
TYP†
Full range
35
25°C
15
Full range
nA
100
150
nA
Low level strobe current
Low-level
V(strobe) = 0.3 V,
See Note 9
VID < −10
10 mV,
IO(off)
Output off-state current
VID > 10 mV,
VCE = 35 V
AVD
Large signal differential
Large-signal
differential-voltage
voltage
amplification
RL = 5 kΩ
ICC+
Supply current from VCC+
VID = −50 mV,
RL = ∞
Full range
150
300
μA
ICC−
Supply current from VCC−
VID = 50 mV,
RL = ∞
Full range
− 80
− 180
μA
25°C
100
300
μA
A
25°C
0.2
100
nA
25°C
40
100
V/mV
All typical values are at VCC± = ±15 V, TA = 25°C.
NOTES: 7. The offset voltages and offset currents given are the maximum values required to drive the output within 1 V of either supply with
a 1-mA load. Thus, these parameters define an error band and take into account the worst-case effects of voltage gain and input
impedance.
8. Voltages are with respect to EMIT OUT and VCC− tied together.
9. The strobe should not be shorted to ground; it should be current driven at 100 μA to 300 μA.
†
switching characteristics, VCC± = ±5 V, TA = 25°C (unless otherwise noted)
PARAMETER
Response time
TEST CONDITIONS
TYP
UNIT
See Note 10
1.2
μs
NOTE 10: The response time is specified for a 100-mV input step with 5-mV overdrive.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
3
LP211, LP311
LOW-POWER DIFFERENTIAL COMPARATORS
WITH STROBES
SLCS003D − JUNE 1987 − REVISED SEPTEMBER 2003
TYPICAL APPLICATION CIRCUIT
VCC+
3 kΩ
BAL/STRB
3 kΩ
BALANCE
TTL
Strobe
BAL/
STRB
2N2222
15 kΩ
NOTE: If offset balancing is not used,
the BALANCE and BAL/STRB
pins should be shorted together.
NOTE: Do not connect strobe pin
directly to ground, because the
output is turned off whenever
current is pulled from the strobe
pin.
Figure 2. Strobing
Figure 1. Offset Balancing
4
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
PACKAGE OPTION ADDENDUM
www.ti.com
14-Oct-2022
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
Samples
(4/5)
(6)
LP211D
ACTIVE
SOIC
D
8
75
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-25 to 85
LP211
Samples
LP211DR
ACTIVE
SOIC
D
8
2500
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-25 to 85
LP211
Samples
LP211DRG4
ACTIVE
SOIC
D
8
2500
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-25 to 85
LP211
Samples
LP311D
ACTIVE
SOIC
D
8
75
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
0 to 70
LP311
Samples
LP311DR
ACTIVE
SOIC
D
8
2500
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
0 to 70
LP311
Samples
LP311P
ACTIVE
PDIP
P
8
50
RoHS & Green
NIPDAU
N / A for Pkg Type
0 to 70
LP311P
Samples
LP311PE4
ACTIVE
PDIP
P
8
50
RoHS & Green
NIPDAU
N / A for Pkg Type
0 to 70
LP311P
Samples
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of