My Inquiry
My Account
Texas Instruments TL343IDBVT
- Part No.:
- TL343IDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TL343IDBVT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,582
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TL343IDBVT from Texas Instruments is a single general-purpose operational amplifier with true differential input, Class AB output stage, and rail-to-rail negative input common-mode range extending to VCC−/GND. It operates from 3 V to 30 V single supply or ±1.5 V to ±15 V dual supply, delivers ±10 V output swing into 2 kΩ at ±15 V, and features 1 MHz unity-gain bandwidth - used in industrial sensor signal conditioning and low-voltage analog front-ends.
For engineers reviewing the TL343IDBVT datasheet, TL343IDBVT pinout, TL343IDBVT application, or TL343IDBVT equivalent, key selection considerations include its 10 mV max input offset voltage at −40°C to 125°C, SOT-23-5 package footprint, single-supply compatibility down to 3 V, and internal frequency compensation enabling stable unity-gain operation without external compensation.
Technical Context
The TL343IDBVT implements a classic bipolar-input op-amp architecture with a true differential input stage and Class AB push-pull output stage. Its input common-mode range includes the negative rail (VCC−/GND), and output swings from VCC−/GND to VCC+ − 1.5 V under load - enabling direct interfacing with microcontroller ADCs and logic-level sensors in single-supply systems.
Internal frequency compensation ensures stability at unity gain (1 MHz GBW) with ≥44° phase margin into 2 kΩ + 200 pF, while short-circuit protection limits output current to ±55 mA. Input bias current remains below −800 nA over full temperature range, supporting high-impedance source applications such as photodiode transimpedance stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 30 V single supply or ±1.5 V to ±15 V dual supply - supports battery-powered and industrial 24 V systems without level-shifting. |
| Input Offset Voltage | Max 12 mV over −40°C to 125°C - enables DC-coupled amplification of mV-level sensor outputs with <1% error at 100× gain. |
| Unity-Gain Bandwidth | 1 MHz - sufficient for anti-aliasing filtering, active RC filters, and audio-frequency signal conditioning up to ~100 kHz. |
| Output Voltage Swing | ±10 V into 2 kΩ at ±15 V supply - delivers full dynamic range to downstream 12-bit ADCs with minimal headroom loss. |
| Slew Rate | 1 V/µs - supports 100 kHz full-power sine wave output at 10 VPP without distortion in unity-gain buffer configurations. |
| Input Bias Current | −800 nA max over full temperature range - preserves accuracy in high-Z sensor interfaces (e.g., thermistors, pH electrodes). |
| Common-Mode Input Range | Extends to VCC−/GND - allows direct connection of ground-referenced transducers without input biasing resistors. |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm × 1.45 mm body, 0.95 mm pin pitch, exposed pad not present, RoHS-compliant NiPdAu lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting input | Accepts feedback network input; referenced to same common-mode range as non-inverting input (VCC− to VCC+ − 2 V). |
| 2 (VCC−/GND) | Negative supply / ground | Reference node for single-supply operation; common-mode input range and output swing both referenced to this pin. |
| 3 (IN+) | Non-inverting input | High-impedance input accepting sensor or reference signals; supports rail-to-rail common-mode operation down to VCC−. |
| 4 (VCC+) | Positive supply | Primary power rail in single-supply mode; sets upper limit of common-mode input (VCC+ − 2 V) and output swing (VCC+ − 1.5 V). |
| 5 (OUT) | Amplified output | Class AB stage drives loads ≥2 kΩ; short-circuit protected; no phase reversal under overload. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation from 3 V | Enables direct integration with 3.3 V and 5 V microcontrollers and ADCs without dual-rail generation circuitry. |
| True differential input stage | Delivers 90 dB typical CMRR at 25°C, rejecting noise coupled equally onto both inputs in noisy industrial environments. |
| Internal frequency compensation | Guarantees stable unity-gain operation without external capacitors - reduces BOM count and layout sensitivity. |
| Short-circuit protection | Limits output current to ±55 mA during fault conditions, preventing thermal runaway and enabling robust field-deployed designs. |
| Low input bias current | −800 nA max over full temperature range maintains accuracy in high-source-impedance applications like piezoelectric sensor buffers. |
Applications
| Industrial Sensor Signal Conditioning | Low-Voltage Analog Front-End |
|---|---|
|
Use Scenario: Amplifying mV-level outputs from RTDs, strain gauges, or thermocouples in programmable logic controllers and remote I/O modules. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier stage with gain-setting resistors and offset trimming. Use Value: 12 mV max input offset ensures ≤0.12% gain error at 100× gain; rail-to-rail input enables direct connection to grounded sensors without bias networks. |
Use Scenario: Buffering and level-shifting analog signals between 3.3 V SoCs and legacy 5 V or 12 V analog subsystems. IC Role / Device Role / Timing Role: Unity-gain voltage follower isolating sensitive ADC inputs from PCB trace capacitance and switching noise. Use Value: 1 V/µs slew rate supports 100 kHz full-scale transitions; 1 MHz GBW ensures flat frequency response up to 100 kHz with <0.1 dB ripple. |
| DC Motor Current Sensing | Power Supply Monitor Circuit |
|
Use Scenario: Amplifying shunt resistor voltage drops in 12 V–24 V brushed DC motor drivers for closed-loop speed/torque control. IC Role / Device Role / Timing Role: High-side or low-side current sense amplifier with adjustable gain and output referenced to system ground. Use Value: Input common-mode range includes VCC−/GND, allowing direct low-side sensing; ±55 mA short-circuit rating withstands motor stall transients. |
Use Scenario: Monitoring 5 V, 12 V, or 24 V rail voltages in industrial HMIs and embedded controllers for brownout detection and power sequencing. IC Role / Device Role / Timing Role: Comparator replacement in window-detect circuits using external resistive dividers and reference voltage. Use Value: 3 V minimum supply enables operation directly from monitored rail via LDO; 10 mV offset ensures accurate threshold detection within ±2%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV321IDBVR | CMOS input (0.5 pA bias current), 1 MHz GBW, 36 V max supply, but only 2.7 V min supply - lower power (65 µA ICC) and higher precision at room temperature. | Preferred for ultra-low-power battery sensors; less suitable for high-temperature industrial use due to 125°C max rating vs. TL343IDBVT's 125°C guaranteed performance. | Select LMV321IDBVR when input bias current <1 nA is required and ambient temperature stays ≤85°C. |
| TLV2461CDBVR | Bipolar input (10 nA bias current), rail-to-rail output, 6.4 MHz GBW, 6 V max supply - wider bandwidth but narrower supply range and lower temperature rating (−40°C to 125°C not fully characterized). | Better for AC-coupled audio or fast-settling data acquisition; unsuitable for 24 V industrial rails or extended-temperature DC sensing. | Choose TLV2461CDBVR only for 3–5.5 V systems requiring >1 MHz bandwidth and rail-to-rail output swing. |
Compared with LMV321IDBVR and TLV2461CDBVR, the TL343IDBVT uniquely balances wide supply range (3–30 V), guaranteed −40°C to 125°C operation, bipolar input robustness, and internal compensation - making it optimal for cost-sensitive, thermally demanding industrial analog signal paths where precision is secondary to ruggedness and simplicity.
Availability
TL343IDBVT is available at Aetrix Electronics and suitable for industrial sensor interfaces, DC motor control feedback loops, and power supply monitoring circuits requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TL343IDBVT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, specializing in analog ICs, embedded processors, and digital signal processing technologies for industrial, automotive, and communications markets.
The TL343 belongs to TI's legacy general-purpose op-amp product line, designed for robust, low-cost analog signal conditioning in harsh environments where wide supply range, temperature resilience, and design simplicity outweigh ultra-low-power or ultra-high-precision requirements.
FAQ
What is the maximum operating temperature range for TL343IDBVT?
The TL343IDBVT is specified for continuous operation from −40°C to +125°C ambient temperature. All electrical characteristics - including input offset voltage (max 12 mV), input bias current (max −800 nA), and output swing - are guaranteed across this full industrial temperature range, making TL343IDBVT suitable for under-hood automotive modules and factory-floor PLCs.
Does TL343IDBVT support true single-supply operation with input signals referenced to ground?
Yes, TL343IDBVT supports true single-supply operation with ground-referenced inputs: its common-mode input range extends to VCC−/GND (pin 2), and the input stage functions correctly when IN+ and IN− are at 0 V with VCC+ = 5 V or 12 V. This eliminates the need for input biasing networks in sensor interface applications, simplifying schematic and layout for TL343IDBVT-based designs.
What is the output voltage swing capability of TL343IDBVT at 5 V supply?
At VCC+ = 5 V and VCC−/GND = 0 V, TL343IDBVT delivers a peak output voltage swing of 3.3 V to 3.5 V into a 10 kΩ load, as confirmed in the "Electrical Characteristics" table for VCC+ = 5 V operation. This provides ≥3.3 VPP dynamic range for interfacing with 3.3 V ADCs and microcontrollers, with headroom sufficient for anti-aliasing filter insertion.
Is TL343IDBVT pin-compatible with other SOT-23-5 op-amps like LMV321 or TLV2461?
No, TL343IDBVT is not pin-compatible with LMV321IDBVR or TLV2461CDBVR: although all use SOT-23-5 (DBV) packages, TL343IDBVT assigns pin 2 to VCC−/GND and pin 4 to VCC+, whereas LMV321 uses pin 2 for IN− and pin 5 for VCC+, and TLV2461 uses pin 2 for IN− and pin 5 for OUT. PCB layout must be redesigned when substituting TL343IDBVT for either alternative.
What packaging and reel information applies to TL343IDBVT?
TL343IDBVT is supplied in SOT-23-5 (DBV) package with NiPdAu lead finish and MSL Level-1 rating. Though listed as "Obsolete" in TI's packaging addendum, Aetrix Electronics maintains active inventory and traceable sourcing for TL343IDBVT in tube and cut-tape formats to support legacy industrial designs requiring long-term component continuity.
TL343IDBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 200 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 700µA
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TL343IDBVT FAQ
1.How can I place an order for TL343IDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TL343IDBVT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TL343IDBVT reliable?
The price and inventory of TL343IDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL343IDBVT is usually 5 days.
3.What payment methods are accepted for TL343IDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL343IDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL343IDBVT?
TL343IDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL343IDBVT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TL343IDBVT?
For technical support, including TL343IDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL343IDBVT requirements.
6.How does Aetrix verify that TL343IDBVT is sourced from the original manufacturer or authorized distributors?
All TL343IDBVT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TL343IDBVT meets industry standards.
7.What is the process for return or replacement of TL343IDBVT?
All TL343IDBVT units undergo pre-shipment inspection (PSI). If there is an issue with TL343IDBVT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TL343IDBVT part is unused and in its original packaging.
Return procedure for TL343IDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL343IDBVT Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
