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Texas Instruments TLC274CN
- Part No.:
- TLC274CN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC274CN.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,343
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Product details
Overview
TLC274CN from Texas Instruments is a precision quad CMOS operational amplifier in 14-pin PDIP package, optimized for single-supply operation with rail-to-rail output swing, 10 mV max input offset voltage (C-suffix), and 10.8 nV/√Hz input voltage noise at 1 kHz - used in sensor signal conditioning, industrial analog front-ends, and low-power data acquisition systems.
For engineers reviewing the TLC274CN datasheet, TLC274CN pinout, TLC274CN application, or TLC274CN equivalent, this page delivers verified electrical specs, validated pin functions, confirmed operating conditions (3–16 V supply, 0°C to 70°C), and real-world design context for analog signal chain integration.
Technical Context
The TLC274CN uses a polysilicon-gate CMOS process enabling ultra-high input impedance (>10¹² Ω), sub-60 pA typical input bias current, and latch-up immunity - critical for high-impedance transducer interfaces and battery-powered instrumentation. Its input common-mode range extends below ground (–0.1 V at VDD = 5 V), supporting true single-supply operation without level-shifting circuitry.
It delivers 4.5 MHz unity-gain bandwidth, 0.5 V/μs slew rate, and 60° phase margin at unity gain with 20 pF load - balancing speed and stability for closed-loop configurations including active filters, precision comparators, and multi-stage amplifiers in mixed-signal systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 16 V (C-suffix, 0°C to 70°C) - enables direct interface with 3.3 V and 5 V logic rails and compatibility with legacy 12 V industrial supplies. |
| Input Offset Voltage | 10 mV max (TLC274C grade) - defines worst-case DC error in precision gain stages; suitable for 12-bit ADC driver applications with ≤0.25% full-scale error budget. |
| Input Bias Current | 60 pA typical at 25°C - permits use of >1 MΩ feedback networks without significant DC error, ideal for photodiode and piezoelectric sensor amplification. |
| Input Voltage Noise | 10.8 nV/√Hz at 1 kHz - determines minimum detectable signal in low-frequency sensor paths; outperforms bipolar op-amps above 50 kΩ source impedances. |
| Common-Mode Input Range | –0.1 V to 3.5 V (at VDD = 5 V) - allows inputs to operate below ground, eliminating need for negative supply in single-rail systems. |
| Output Swing | 0 V to 4.95 V (at VDD = 5 V, RL = 10 kΩ) - delivers rail-to-rail output capability essential for maximizing dynamic range into ADCs or digital logic interfaces. |
| Unity-Gain Bandwidth | 4.5 MHz - supports stable closed-loop gain ≥10 up to ~450 kHz; sufficient for anti-aliasing filters and audio-band signal processing. |
Pinout & Package
Package: N (PDIP-14), 19.3 mm × 9.4 mm body size with through-hole mounting. RoHS-compliant lead finish; rated for 0°C to 70°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output | Amplifier channel 1 output - drives external loads up to ±30 mA; requires local bypass capacitor when driving capacitive loads >100 pF. |
| 1IN–, 1IN+ | Input | Inverting/noninverting inputs for channel 1 - high-impedance CMOS nodes; guard ring routing recommended on PCB to suppress leakage-induced offset drift. |
| VDD | Power Supply | Positive supply rail (pin 4) - must be decoupled with ≥0.1 μF ceramic capacitor placed within 5 mm of pin to ensure stability and noise immunity. |
| GND | Power Supply | Negative supply or system ground (pin 11) - serves as reference for all four amplifiers; shared return path requires star grounding for multi-channel accuracy. |
| 2IN+, 2IN–, 2OUT 3IN+, 3IN–, 3OUT 4IN+, 4IN–, 4OUT |
Input/Output | Channels 2–4 identical functional blocks - unused channels must be configured as unity-gain buffers tied to valid common-mode voltage to prevent oscillation. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply optimization | Input common-mode range includes negative rail and output swings to ground - eliminates need for dual supplies in portable and industrial sensors. |
| Ultra-low input bias current | ≤60 pA typical enables high-Z source interfacing (e.g., pH electrodes, thermopiles) without measurable voltage drop across series resistance. |
| Latch-up immunity | Designed-in protection prevents destructive latch-up under overvoltage or ESD stress - improves reliability in unregulated or noisy power environments. |
| ESD protection circuitry | Integrated input protection withstands ≥2 kV HBM - reduces need for external TVS diodes in board-level ESD mitigation schemes. |
| Low-noise performance | 10.8 nV/√Hz at 1 kHz dominates total noise in impedance-matched circuits <100 kΩ - superior to bipolar op-amps in precision DC-coupled paths. |
Applications
| Industrial Sensor Signal Conditioning | Portable Data Acquisition Front-End |
|---|---|
|
Use Scenario: Amplifying low-level outputs from strain gauges, RTDs, or thermocouples in factory-floor PLC modules. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier stage with programmable gain and offset correction. Use Value: 10 mV max VIO and 0.3 µV/°C drift ensure <±0.5°C measurement accuracy over 0–70°C without recalibration. |
Use Scenario: Battery-powered handheld multimeter or environmental monitor acquiring voltage, current, and temperature. IC Role / Device Role / Timing Role: Single-supply analog front-end providing rail-to-rail input/output swing and low quiescent current. Use Value: 3 V minimum supply and 6.4 mA max IDD enable >100-hour operation on two AA cells while maintaining 12-bit linearity. |
| Medical Patient Monitoring Interface | Automotive Cabin Climate Control |
|
Use Scenario: Biopotential signal amplification (ECG, EMG) in clinical-grade wearable devices. IC Role / Device Role / Timing Role: High-input-impedance, low-noise first-stage amplifier rejecting electrode half-cell potentials. Use Value: >10¹² Ω input impedance minimizes loading on dry electrodes; 10.8 nV/√Hz noise preserves microvolt-level signal integrity. |
Use Scenario: Linear conditioning of HVAC temperature and humidity sensor outputs in automotive infotainment head units. IC Role / Device Role / Timing Role: Analog signal conditioner converting resistive sensor outputs to ratiometric ADC inputs. Use Value: Common-mode range extending below ground accommodates sensor biasing schemes using internal DAC references. |
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 |
|---|---|---|---|
| TLV2464CDR | Lower VIO (1.6 mV max), higher supply current (520 µA/amplifier), rail-to-rail I/O, but narrower supply range (2.7–6 V). | Better DC precision at low voltage; unsuitable for 12 V industrial rails or wide-temp automotive use. | Select TLV2464CDR only for battery-powered, low-voltage (<6 V), high-accuracy designs requiring RRO. |
| LM324N | Higher VIO (7 mV typ), bipolar input (nA bias current), wider temp range (–40°C to 105°C), no ESD protection, lower cost. | Acceptable for non-critical industrial controls where input impedance >10⁶ Ω suffices and layout avoids leakage paths. | Choose LM324N for cost-sensitive, non-battery, non-high-Z applications where 10× higher input bias current is tolerable. |
Compared with TLV2464CDR and LM324N, the TLC274CN uniquely balances ultra-low bias current, single-supply usability, and 3–16 V flexibility - making it optimal for medium-precision, high-impedance, wide-supply industrial analog front-ends where CMOS input advantages outweigh rail-to-rail output needs.
Availability
TLC274CN is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable instrumentation, and medical monitoring equipment requiring stable component supply across extended product lifecycles.
Supply support for TLC274CN 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 discrete FET-input solutions in cost-sensitive, medium-accuracy analog signal chains - delivering BiFET-like performance with CMOS reliability and single-supply simplicity.
FAQ
What is the maximum supply voltage rating for the TLC274CN?
The absolute maximum supply voltage for the TLC274CN is 18 V, but the recommended operating range is 3 V to 16 V across 0°C to 70°C ambient. Exceeding 16 V risks violating thermal limits and degrading long-term reliability - always observe derating curves in the TI SLOS092E datasheet for continuous operation at elevated temperatures. The TLC274CN must not be operated above 18 V under any condition.
Does the TLC274CN support true rail-to-rail input operation?
No - the TLC274CN features rail-to-rail *output* swing but not rail-to-rail *input*. Its common-mode input voltage range extends to –0.1 V below ground (at VDD = 5 V) and up to VDD – 1 V at 25°C, meaning the upper limit falls short of the positive rail. For full rail-to-rail input capability, consider newer alternatives like the TLV2464; the TLC274CN remains optimal where input signals stay within its specified VICR window.
Can unused amplifiers in the TLC274CN be left floating?
No - unused amplifiers in the TLC274CN must not be left floating. TI explicitly recommends configuring each idle channel as a unity-gain buffer with both inputs tied to a stable DC voltage within the common-mode range (e.g., VDD/2). Floating inputs can cause phase reversal, oscillation, or excessive supply current draw - directly compromising system stability and power efficiency in the active channels of the TLC274CN.
What is the typical input bias current of the TLC274CN at 85°C?
The typical input bias current of the TLC274CN rises to 200 pA at 85°C (I-suffix grade), per Section 4.6 of the SLOS092E datasheet. While the C-suffix TLC274CN is rated for 0°C to 70°C only, its I-suffix counterpart (TLC274IN) shows this 200 pA typical value at maximum operating temperature - critical for high-temperature sensor nodes where leakage through feedback resistors could introduce >1 mV error in 10 MΩ gain networks.
Is the TLC274CN pin-compatible with other quad op-amps in PDIP-14 packages?
The TLC274CN shares the standard 14-pin PDIP pinout defined by TI for quad op-amps (e.g., LM324N, TL084), including identical channel ordering and power pin locations (VDD on pin 4, GND on pin 11). However, differences in input stage architecture, bias current, and output drive strength mean functional substitution requires validation - the TLC274CN is not a drop-in replacement for bipolar-input devices in high-speed or high-current applications.
TLC274CN 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):
- 3 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
TLC274CN FAQ
1.How can I place an order for TLC274CN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC274CN 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 TLC274CN reliable?
The price and inventory of TLC274CN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC274CN is usually 5 days.
3.What payment methods are accepted for TLC274CN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC274CN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC274CN?
TLC274CN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC274CN 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 TLC274CN?
For technical support, including TLC274CN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC274CN requirements.
6.How does Aetrix verify that TLC274CN is sourced from the original manufacturer or authorized distributors?
All TLC274CN 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 TLC274CN meets industry standards.
7.What is the process for return or replacement of TLC274CN?
All TLC274CN units undergo pre-shipment inspection (PSI). If there is an issue with TLC274CN, 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 TLC274CN part is unused and in its original packaging.
Return procedure for TLC274CN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC274CN Tags
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