Texas Instruments LM397MFX/NOPB

View All Display Drivers by Texas Instruments

Part Number:
LM397MFX/NOPB
Manufacturer:
Texas Instruments
Category:
Display Drivers
RoHs:
RoHS Compliant
Datasheet:
LM397MFX/NOPB_Datesheet
Description:
Comparator General Purpose Open-Collector, Rail-to-Rail SOT-23-5
In stock 4,186

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Specifications

Type

Paramete

Type

Paramete

Operating Temperature

-40°C ~ 85°C

CMRR, PSRR (Typ)

Current - Quiescent (Max)

2mA

Mounting Type

Surface Mount

Output Type

Open-Collector, Rail-to-Rail

Type

General Purpose

Voltage - Input Offset (Max)

7mV @ 30V

Supplier Device Package

SOT-23-5

Voltage - Supply, Single/Dual (±)

5V ~ 30V, ±2.5V ~ 15V

Hysteresis

Package / Case

SC-74A, SOT-753

Propagation Delay (Max)

Number of Elements

Base Product Number

LM397

Current - Input Bias (Max)

0.25µA @ 5V

Current - Output (Typ)

13mA @ 5V

Overview

LM397MFX/NOPB Product Information

Name: LM397MFX%2FNOPB
Brand: Texas Instruments
SKU: JM-LM397MFX%2FNOPB
Availability: InStock

Overview

The LM397MFX/NOPB is a single general-purpose voltage comparator from Texas Instruments. It is designed for a wide range of applications, including A/D converters, pulse and square-wave generators, and peak detectors. The LM397MFX/NOPB operates from a single 5-V to 30-V power supply or a split power supply, making it highly versatile for various industrial applications.

Features

Operating Range: Industrial operating range of -40°C to +85°C
Supply Voltage: Wide supply voltage range of 5V to 30V
Low Power Consumption: Low supply current of 300μA
High Precision: Low input bias current (7nA) and low input offset current (±1nA)
Fast Response: Response time of 440ns with 50-mV overdrive
Wide Input Range: Input common-mode voltage range from 0 to VS−1.5V
Open-Collector Output: Allows connection to various logic levels (TTL, CMOS) and external resistors for level translation
Package: 5-Pin SOT-23 package with dimensions 2.90mm × 1.60mm

Applications

Analog-to-Digital Converters (A/D)
Pulse and Square-Wave Generators
Peak Detectors
Industrial Applications

Ordering Information

Part Number: LM397MFX/NOPB
Package Type: SOT-23 (DBV)
Lead Finish/Ball Material: Sn (Tin)
MSL Rating/Peak Reflow: Level-1, 260°C, UNLIM
Operating Temperature Range: -40°C to +85°C
Part Marking: C397

Pin Configuration

5-Pin SOT-23 Package

TableCopy

PIN	NAME	TYPE	DESCRIPTION
1	VIN+	Noninverting Input	Noninverting input for comparator
2	GND	Ground	Ground reference
3	VIN-	Inverting Input	Inverting input for comparator
4	OUTPUT	Output	Open-collector output stage
5	VS	Supply Voltage	Positive supply voltage

Electrical Characteristics

At TA = 25°C, VS = 5V, V− = 0V, VCM = V+/2 = VO

TableCopy

PARAMETER	TEST CONDITIONS	MIN	TYP	MAX	UNIT
Input Offset Voltage (VOS)	VS = 5V to 30V, VO = 1.4V, VCM = 0V	±2	±7	±10	mV
Input Offset Current (IOS)	VO = 1.4V, VCM = 0V	±1	±50	±250	nA
Input Bias Current (IB)	VO = 1.4V, VCM = 0V	10	250	400	nA
Supply Current (IS)	RL = open, VS = 5V	0.25	0.7	-	mA
Output Sink Current (IO)	VIN+ = 1V, VIN- = 0V, VO = 1.5V	6	13	-	mA
Output Leakage Current (ILEAKAGE)	VIN+ = 1V, VIN- = 0V, VO = 30V	-	-	1	µA
Output Voltage Low (VOL)	IO = -4mA, VIN+ = 0V, VIN- = 1V	180	400	700	mV
Input Common-Mode Voltage Range (VCM)	VS = 5V to 30V	0	VS - 1.5	-	V
Voltage Gain (AV)	VS = 15V, VO = 1.4V to 11.4V, RL ≥ 15kΩ connected to VS	120	-	-	V/mV
Propagation Delay (tPHL)	High to Low, RL = 5.1kΩ connected to 5V, CL = 15pF	900	-	-	ns
Propagation Delay (tPLH)	Low to High, RL = 5.1kΩ connected to 5V, CL = 15pF	440	-	-	ns

Recommended Operating Conditions

Supply Voltage (VS): 5V to 30V
Temperature: -40°C to +85°C

Absolute Maximum Ratings

Differential Input Voltage (VIN): ±30V
Supply Voltages: ±15V to 30V
Voltage at Input Pins: -0.3V to 30V
Junction Temperature (TJ): 150°C
Storage Temperature (Tstg): -65°C to 150°C

Mechanical and Packaging Information

Package: SOT-23 (DBV) with 5 pins
Body Size (Nominal): 2.90mm × 1.60mm
Lead Finish/Ball Material: SN (Tin)
MSL Rating/Peak Reflow: Level-1, 260°C, UNLIM

Layout Recommendations

Ground Plane: Use a good, unbroken low-inductance ground plane.
Decoupling Capacitor: Place a 0.1-μF decoupling capacitor close to the VS pin.
Trace Lengths: Keep input and output trace lengths as short as possible to avoid unwanted parasitic feedback.
Parasitic Feedback: Use a small capacitor (1000pF or less) between the inputs to prevent oscillations.
Direct Soldering: Solder the device directly to the PCB rather than using a socket.

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