Part Number: TL331IDBVR

Manufacturer: Texas Instruments

Description: IC COMPARATOR 1 DIFF SOT23-5

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Technical Specifications of TL331IDBVR

Datasheet  TL331IDBVR datasheet
Category Integrated Circuits (ICs)
Family Linear – Comparators
Manufacturer Texas Instruments
Packaging Cut Tape (CT)
Part Status Active
Type Differential
Number of Elements 1
Output Type CMOS, MOS, Open-Collector, TTL
Voltage – Supply, Single/Dual (±) 2 V ~ 36 V, ±1 V ~ 18 V
Voltage – Input Offset (Max) 5mV @ 30V
Current – Input Bias (Max) 0.25μA @ 5V
Current – Output (Typ) 20mA
Current – Quiescent (Max) 700μA
Propagation Delay (Max)
Operating Temperature -40°C ~ 85°C
Package / Case SC-74A, SOT-753
Mounting Type Surface Mount
Supplier Device Package SOT-23-5

TL331IDBVR Description

The TL331B and TL391B are newer models of the TL331 comparator, which has been used for years. These next-generation devices have a lower offset voltage, a higher supply voltage capability, a lower input bias current, a wider temperature range, and better 2 kV ESD performance with drop-in replacement. This makes them a great choice for cost-sensitive applications.

The TL331B can directly replace the TL331I and TL331K, and the TL391B has an alternative port for the TL331B so that it can be used to replace competing devices. The common-mode voltage must be between 0 V and 36 V, and VCC must be at least 1.5 V higher than that. Within those limits, you can also run on two different supplies. The power going in has nothing to do with the amount of current that flows out. Wired-AND connections can be set up by connecting the outputs to other open-collector outputs.

TL331IDBVR Detailed Description

The single-comparator TL331 model can handle up to 36 V on the supply pin. This popular tool has been used well in many different situations, which shows how useful and flexible it is. This is because it has a low Iq, a quick reaction time, and a supply voltage range that goes from 2 V to 36 V. By changing the logic low voltage (VOL) of the open-collector output, the AND function can be turned on. By using cutting-edge manufacturing methods, the TL331B and TL391B are better versions of the TL331. They have less offset voltage, less input bias and supply current, and faster response times over a wider range of temperatures. The TL331B works with the “I” and “K” types as well. The TL391B gives you a different way to connect similar components, so you can swap them out.

TL331IDBVR Feature Description

Due to the PNP Darlington pair input, devices in the TL331x family can achieve very high gain and fast response with only a small amount of input bias current. Because the input Darlington pair can only handle a certain amount of common mode voltage, the TL331x can work correctly from ground to VCC with a 1.5 V differential input.

The output is a pull-down or low-side NPN (open collector) transistor. If both the positive input voltage and the offset voltage are higher than the negative input voltage, the output NPN will sink current. Because it is resistant, the VO will grow at the same rate as the power.

TL331IDBVR Application Information

TL331x is usually used to compare two signals to each other or one signal to a reference signal. The open drain output is often used to set the logic voltage level of the compare logic output so that it can be used with a microprocessor or other logic device. Because it can handle high voltages and has a wide supply range, the TL331x is a great choice for level changing to higher or lower voltages.


  • Vacuum robot
  • Single-phase UPS
  • Cordless power tool
  • Appliances
  • Building automation
  • Infotainment and cluster


  • The TL331B is a straight upgrade to the TL331.
  • Ground is part of the set of voltages for the common-mode input.
  • The highest supply voltage is 38 V, which is also the maximum input voltage difference.
  • At maximum, the output voltage was lowered.
  • There are three types of output: TTL, MOS, and CMOS.

Device Functional Modes

● Voltage Comparison

All of the TL331x comparators, which include the TL331, TL331K, TL331B, and TL391B, can only compare voltages. The main job of these gadgets is to measure the voltage difference between the positive and negative sources. The direction of the differential voltage input determines whether the comparator’s output is high (with pull-up) or low (logic low). With this feature, the TL331x comparators can find out with great accuracy how big and which way the input voltage signals are going. Because they give a digital output based on the comparison, these devices are great for a wide range of uses that need accurate voltage level sensing and differentiation.


● ESD Ratings: TL331 and TL331K

Electrostatic discharge (ESD) rates that are high on the TL331 and TL331K protect them from electrostatic events. Most of the time, the TL331 has an HBM rating of 2000 V and an MM rating of 200 V.The TL331K has higher ESD values, which are usually 4000V for HBM and 400V for MM. This makes it safer. Because of their ratings, the comparators can still work reliably and safely in scenarios where an electrostatic discharge could cause damage.

● ESD Ratings: TL331B and TL391B

The TL331B and TL391B are both comparators that have electrostatic discharge (ESD) values, just like the TL331 and TL331K. The normal ratings for the TL331B are 2000V (HBM) and 200V (MM), while the TL391B is safer with 4000V (HBM) and 400V (MM) ratings. These scores show how resistant the comparators are to electrostatic discharge, so they can be used in situations where ESD protection is required. The TL331B and TL391B comparators have built-in ESD safety to make sure they work consistently and avoid expensive problems.

● Recommended Operating Conditions, TL331 and TL331K

The TL331 and TL331K comparators shine when they are working at their best. The temperature range is from -40 to +85 degrees Celsius, and the voltage range is from 2 to 36 volts. Comparators are sure to work correctly and reliably if they are used within these limits. The TL331 and TL331K comparators work the same way every time and meet the needs of a wide range of applications when they are used within the limits set by the manufacturer.

● Recommended Operating Conditions, TL331B and TL391B

Like the TL331 and TL331K, the TL331B and TL391B comparators work best in certain cases. Included are power voltages between 2 and 36 volts and temperatures between -40 degrees Celsius and +125 degrees Celsius. If these things are true, the comparators will work well and correctly. The TL331B and TL391B comparators work well and can handle a wide range of working temperatures and supply voltages.

● Thermal Information for TL331IDBVR

The TL331IDBVR is a SOT23-5 version of the TL331 comparison. Thermal data is needed to understand and control how the gadget heats up and cools down. The thermal resistance (JA) of the package, which is usually 220°C/W, is a measure of the heat flow from the device joint to the air around it. This information makes it much easier to understand how the device handles heat and come up with good ways to handle it. By keeping an eye on the temperature data, designers can make sure the TL331IDBVR comparison works well and doesn’t get too hot.


● Layout Guidelines

For accurate, hysteresis-free comparator applications, you need a stable power source with few glitches and noise, which could impact the high-level input common mode voltage range. To do this, you should put a bypass capacitor between the power source and the ground. Both positive and negative power sources should be used to do this. If you aren’t using a negative source, don’t connect a capacitor to the GND pin of the IC and the system ground.


In conclusion, the TL331IDBVR from Texas Instruments is a top-notch voltage comparator that works well in a wide range of situations. It has high performance, a wide supply voltage range, and better ESD safety, all of which make it easy to find and tell apart different voltage levels. The TL331IDBVR always does a great job, whether it’s in a hoover robot, an uninterruptible power supply (UPS) system, a power tool, a device, or a building automation system. If you have any questions about this amazing gadget or want to place an order, please contact Texas Instruments or one of their authorised dealers, like the well-known Chinese distributor ICRFQ.

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