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Texas Instruments TLC274IN
- Part No.:
- TLC274IN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC274IN.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,255
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Product details
Overview
TLC274IN from Texas Instruments is a precision quad CMOS operational amplifier optimized for single-supply operation, featuring 10 mV max input offset voltage (C-suffix), 10.8 nV/√Hz input voltage noise at 1 kHz, and rail-to-rail output swing down to GND - enabling accurate signal conditioning in low-voltage sensor interfaces and industrial analog front-ends.
For engineers reviewing the TLC274IN datasheet, TLC274IN pinout, TLC274IN application, or TLC274IN equivalent, this device supports design of battery-powered instrumentation, 3–16 V single-rail systems, and high-impedance transducer amplifiers where low bias current (<60 pA) and latch-up immunity are critical.
Technical Context
The TLC274IN uses a polysilicon-gate CMOS process to achieve >10¹² Ω input impedance and sub-pA input bias current, with common-mode input range extending below GND (–0.1 V at VDD = 5 V). Its architecture supports stable unity-gain operation (60° phase margin) and delivers 4.5 MHz unity-gain bandwidth with 0.5 V/μs slew rate under 10 kΩ/20 pF load.
Designed for robustness in mixed-signal environments, it integrates ESD-protection circuitry, exhibits latch-up immunity per JEDEC JESD78, and maintains CMRR ≥65 dB and PSRR ≥65 dB across 0°C to 70°C - making it suitable for noisy industrial control and data acquisition systems without external guarding in moderate EMC conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 10 mV max (25°C, C-suffix grade) - sets DC accuracy limit in precision gain stages and sensor bridges |
| Input Bias Current | 60 pA max (25°C) - enables use with >1 MΩ source impedances without significant error |
| Supply Voltage Range | 3 V to 16 V (0°C to 70°C) - compatible with 3.3 V, 5 V, and 12 V logic/system rails |
| Input Voltage Noise | 10.8 nV/√Hz at 1 kHz - lower than bipolar op-amps above 50 kΩ source impedance |
| Unity-Gain Bandwidth | 4.5 MHz - supports stable amplification of audio-band and low-speed control signals |
| Common-Mode Input Range | –0.1 V to VDD – 1 V (25°C) - allows direct interfacing to ground-referenced sensors |
| Output Swing (to GND) | 0 V min (50 mV max low-level output at 25°C) - enables full dynamic range in single-supply ADC drivers |
Pinout & Package
Package: N (PDIP-14), 19.3 mm × 9.4 mm body size with through-hole mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output | Amplifier channel 1 output; capable of sourcing/sinking ±30 mA |
| 1IN–, 1IN+ | Input | Inverting/noninverting inputs for channel 1; high-impedance CMOS nodes |
| VDD | Power | Positive supply pin (3–16 V); must be bypassed locally with 0.1 μF ceramic |
| 2IN+, 2IN–, 2OUT | Input/Output | Channel 2 differential inputs and output; electrically identical to channel 1 |
| 3OUT, 3IN–, 3IN+ | Output/Input | Channel 3 terminals; fully independent; unused channels must be configured as unity-gain followers |
| GND | Power | Negative supply/ground reference; return path for all four amplifiers |
| 4IN+, 4IN–, 4OUT | Input/Output | Channel 4 terminals; same specs and layout rules apply as other channels |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing to GND | Enables full-scale signal utilization in 3.3 V and 5 V single-supply systems without level-shifting |
| Input common-mode range below GND | Supports direct connection of ground-referenced transducers (e.g., thermocouples, strain gauges) |
| ESD protection circuitry | Withstands >2 kV HBM per JESD22-A114 - reduces need for external TVS in board-level ESD design |
| Latch-up immunity | Guaranteed per JEDEC JESD78 - prevents destructive failure during overvoltage or power sequencing faults |
| Low input voltage noise (10.8 nV/√Hz) | Outperforms bipolar op-amps in high-Z sensor interfaces (>50 kΩ), reducing total integrated noise |
Applications
| Industrial Sensor Signal Conditioning | Portable Data Acquisition Front-End |
|---|---|
|
Use Scenario: Amplifying low-level mV outputs from RTDs, thermocouples, or bridge-based pressure sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with offset trimming capability and low drift over temperature. Use Value: 10 mV max VIO and 0.3 µV/°C drift enable <±0.1% system accuracy over 0°C–70°C without active calibration. |
Use Scenario: Battery-powered handheld multimeter or environmental monitor acquiring voltage, current, and temperature. IC Role / Device Role / Timing Role: Single-supply rail-to-rail I/O amplifier driving SAR ADC reference buffers and sensor preamps. Use Value: 3 V minimum supply and 60 pA max IIB extend battery life while maintaining accuracy with high-impedance probe circuits. |
| Automotive Cabin Climate Control | Medical Patient Monitoring Interface |
|
Use Scenario: Signal conditioning for cabin temperature, humidity, and CO₂ sensors in automotive HVAC control units. IC Role / Device Role / Timing Role: Low-noise, ESD-hardened amplifier in harsh 12 V vehicle electrical environment. Use Value: Integrated ESD protection and latch-up immunity eliminate need for discrete protection components on sensor lines. |
Use Scenario: Biopotential front-end for ECG/EMG electrodes requiring high input impedance and low-frequency stability. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer with guard-driven PCB layout support. Use Value: >10¹² Ω input impedance minimizes electrode polarization error; 10.8 nV/√Hz noise preserves microvolt-level signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464IN | Lower VIO (1.6 mV typ), higher quiescent current (520 µA/amplifier), rail-to-rail I/O | Better DC accuracy but higher power; requires tighter thermal management in dense layouts | Preferred when sub-mV offset and rail-to-rail input are mandatory; not drop-in due to different bias network requirements |
| LM324N | Bipolar input (200 nA IIB), higher VIO (7 mV max), no ESD protection, wider temp range (–40°C to 125°C) | Higher power consumption and noise; suitable only where cost dominates over precision and reliability | Consider only for legacy cost-sensitive designs; lacks latch-up immunity and fails ESD robustness requirements for new medical/industrial designs |
Compared with TLV2464IN and LM324N, the TLC274IN delivers superior input impedance and ESD resilience at moderate offset voltage and power - making it optimal for new designs requiring reliable single-supply operation with minimal external protection.
Availability
TLC274IN is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable instrumentation, and automotive cabin control systems requiring stable component supply across extended product lifecycles.
Supply support for TLC274IN 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 leader specializing in analog and embedded processing technologies, with decades of expertise in precision op-amp design and manufacturing.
The TLC27xx family was engineered to replace bipolar and BiFET op-amps in cost-sensitive, single-supply applications - delivering CMOS advantages (ultra-low IIB, high ZIN, latch-up immunity) without sacrificing speed or noise performance.
FAQ
What is the maximum operating temperature range for the TLC274IN?
The TLC274IN is rated for 0°C to 70°C ambient operation per its C-suffix designation. Absolute maximum junction temperature is 150°C, but sustained operation above 70°C requires derating supply current and verifying thermal dissipation in the final PCB layout. The TLC274IN does not support industrial (–40°C to 85°C) or extended temperature grades - those are covered by the I-suffix variants like TLC274I.
Does the TLC274IN support true rail-to-rail input operation?
No, the TLC274IN does not support rail-to-rail input. Its common-mode input voltage range extends to –0.1 V (below GND) and up to VDD – 1 V at 25°C, but it cannot accept signals at the positive rail. This limitation is explicitly defined in Section 4.2 of the datasheet. For rail-to-rail input capability, consider TI's TLV2464IN or OPA4340 series - neither is pin-compatible with the TLC274IN.
Can the TLC274IN drive capacitive loads directly?
The TLC274IN is stable with up to 20 pF capacitive load per output under unity-gain configuration, as verified in Figure 4-10 (open-loop gain/phase plot) and Section 4.7. Driving larger capacitive loads (e.g., >50 pF) risks peaking or oscillation and requires isolation resistance (≥100 Ω) in series with the output. The TLC274IN datasheet does not specify enhanced capacitive-load drive capability - unlike some newer TI op-amps such as the OPAx322 family.
Is the TLC274IN pin-compatible with other quad op-amps in PDIP-14 packages?
The TLC274IN uses standard PDIP-14 pinout per Figure 3-1: channels arranged as 1OUT/1IN–/1IN+/VDD/2IN+/2IN–/2OUT/3OUT/3IN–/3IN+/GND/4IN+/4IN–/4OUT. It matches LM324N, TL074, and NE5532 pin-for-pin in this package. However, electrical behavior differs significantly - especially input structure (CMOS vs bipolar/JFET), supply range, and ESD tolerance - so functional substitution requires full circuit validation.
What is the typical supply current per amplifier in the TLC274IN?
At 25°C and VDD = 5 V, the TLC274IN draws 2.24 mA typical total supply current for all four amplifiers - approximately 560 µA per channel. Maximum IDD is 6.4 mA (full range), meaning worst-case per-amplifier current is ~1.6 mA. This value is confirmed in Table 4.3 (Electrical Characteristics) and applies only to the C-suffix grade; I-suffix variants show slightly higher current at temperature extremes.
TLC274IN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 3.6V/µs
- Gain Bandwidth Product:
- 2.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.6 pA
- Voltage - Input Offset:
- 1.1 mV
- Current - Supply:
- 2.7mA (x4 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
TLC274IN FAQ
1.How can I place an order for TLC274IN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC274IN 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 TLC274IN reliable?
The price and inventory of TLC274IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC274IN is usually 5 days.
3.What payment methods are accepted for TLC274IN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC274IN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC274IN?
TLC274IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC274IN 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 TLC274IN?
For technical support, including TLC274IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC274IN requirements.
6.How does Aetrix verify that TLC274IN is sourced from the original manufacturer or authorized distributors?
All TLC274IN 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 TLC274IN meets industry standards.
7.What is the process for return or replacement of TLC274IN?
All TLC274IN units undergo pre-shipment inspection (PSI). If there is an issue with TLC274IN, 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 TLC274IN part is unused and in its original packaging.
Return procedure for TLC274IN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC274IN Tags
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