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Texas Instruments TLC254CD
- Part No.:
- TLC254CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC254CD.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,119
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Product details
Overview
TLC254CD from Texas Instruments is a LinCMOS™ quad operational amplifier optimized for low-power, single-supply operation across 1.4 V to 16 V. It delivers 10 mV max input offset voltage (25°C), 4 mA typical supply current (VDD = 5 V), 25 nV/√Hz input noise at 1 kHz, and rail-to-rail common-mode input range extending to the negative rail - enabling precision signal conditioning in battery-powered sensor interfaces and portable instrumentation.
For engineers reviewing the TLC254CD datasheet, TLC254CD pinout, TLC254CD application, or TLC254CD equivalent, this device is selected for ultra-low-input-bias-current analog front-ends where input impedance >10¹² Ω, sub-µA quiescent current per amplifier, and stable DC performance over 0°C to 70°C are critical design requirements.
Technical Context
The TLC254CD uses Texas Instruments' silicon-gate LinCMOS™ process to achieve picoamp-level input bias and offset currents, high open-loop gain (>10⁴ V/V), and unity-gain stability without external compensation. Its input stage operates with true single-supply capability, allowing the common-mode range to include ground while maintaining low offset drift (0.7 µV/°C typical).
This variant belongs to the TLC254_C grade (10 mV VIO max), features four independent amplifiers in a 14-pin SOIC (D) package, and is characterized for commercial temperature range (0°C to 70°C). It supports low-voltage operation down to 1.4 V with full functionality, including output swing within 50 mV of rails under light load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.4 V to 16 V - enables direct use with single-cell Li-ion, alkaline, or solar sources without regulation. |
| Input Offset Voltage (Max) | 10 mV at 25°C - defines worst-case DC error in precision gain stages and active filters. |
| Supply Current (Typ) | 4 mA at VDD = 5 V (four amps) - supports multi-channel signal chains in energy-constrained systems. |
| Input Bias Current (Typ) | 1 pA at 25°C - preserves signal integrity in high-impedance transducer interfaces (e.g., pH electrodes, photodiode TIA). |
| Input Noise Voltage | 25 nV/√Hz at f = 1 kHz - suitable for low-frequency sensor amplification without dominant noise contribution. |
| Common-Mode Input Range | Includes VDD–/GND - allows direct sensing of signals referenced to ground in single-supply topologies. |
| Unity-Gain Bandwidth | 1.7 MHz at VDD = 5 V - supports stable closed-loop operation up to ~100 kHz with moderate gain. |
Pinout & Package
Package: 14-pin SOIC (D), surface-mount, tape-and-reel compatible (TLC254CDR available). Dimensions per JEDEC MS-012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Amplifier 1 output | Drives external load; rail-swing capability supports wide dynamic range in single-supply configs. |
| 1IN– | Amplifier 1 inverting input | High-impedance node; accepts feedback networks for precise gain control. |
| 1IN+ | Amplifier 1 non-inverting input | Accepts reference or sensor signal; common-mode range includes GND. |
| VDD | Positive supply | Single positive rail; no separate VDD– required - simplifies PCB routing. |
| 2IN+ | Amplifier 2 non-inverting input | Independent channel input; identical specs to Pin 1IN+. |
| 2IN– | Amplifier 2 inverting input | Supports differential or inverting configurations per channel. |
| 2OUT | Amplifier 2 output | Four fully independent outputs enable multi-stage or parallel processing. |
| 4OUT | Amplifier 4 output | Pin 14 used as final output; layout symmetry aids thermal balance. |
| 4IN– | Amplifier 4 inverting input | Matches electrical behavior of Pins 1IN– and 2IN–. |
| 4IN+ | Amplifier 4 non-inverting input | Enables four-channel signal conditioning on one IC. |
| VDD–/GND | Ground reference | Shared return for all amplifiers; internal ESD protection rated to 2000 V. |
| 3IN+ | Amplifier 3 non-inverting input | Third channel input; pin 9 assigned per standard SOIC top-view orientation. |
| 3OUT | Amplifier 3 output | Output for third amplifier; pin 8 provides dedicated output path. |
| 3IN– | Amplifier 3 inverting input | Completes fourth independent op-amp channel (Pins 8, 9, 10). |
Key Features
| Feature | Design Value |
|---|---|
| LinCMOS™ process technology | Delivers 1 pA input bias current and >10¹² Ω input impedance - essential for high-Z sensor interfacing. |
| True single-supply operation | Common-mode input range includes GND and output swings to within 50 mV of rails - eliminates level-shifting circuitry. |
| Low-voltage capability | Functional at 1.4 V supply - enables direct integration with emerging ultra-low-power microcontrollers and energy harvesters. |
| ESD protection | 2000 V HBM rating per MIL-STD-883C Method 3015.1 - enhances robustness in handling and assembly. |
| Stable DC performance | 0.7 µV/°C offset drift and 10 mV max VIO - ensures long-term accuracy in unregulated environments. |
Applications
| Portable Medical Sensors | Industrial Process Monitoring |
|---|---|
|
Use Scenario: Amplifying low-level signals from electrochemical sensors (e.g., glucose, blood gas) in handheld diagnostic devices. IC Role / Device Role / Timing Role: Precision DC-coupled transducer interface amplifier with rail-to-rail input/output. Use Value: 1 pA input bias prevents loading of high-impedance electrode interfaces, preserving signal fidelity and calibration stability. |
Use Scenario: Signal conditioning for 4–20 mA loop-powered field transmitters in factory automation. IC Role / Device Role / Timing Role: Low-power, single-supply instrumentation amplifier front-end. Use Value: 1.4 V minimum supply allows operation directly from loop power with margin for voltage drop across sensing elements. |
| Battery-Powered Data Loggers | Solar-Powered Environmental Stations |
|
Use Scenario: Multi-channel analog acquisition in remote environmental monitoring nodes powered by coin cells. IC Role / Device Role / Timing Role: Quad-channel signal conditioner for thermistor, humidity, and pressure sensors. Use Value: 4 mA total supply current at 5 V enables >1-year operation on CR2032 batteries in duty-cycled systems. |
Use Scenario: Analog front-end for soil moisture, light, and temperature sensors in off-grid agricultural telemetry units. IC Role / Device Role / Timing Role: Low-voltage, low-drift amplifier for energy-harvesting systems with variable solar input. Use Value: Stable 10 mV VIO max and 0.7 µV/°C drift ensure accurate readings across wide ambient temperature swings without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464CD | Higher supply current (1.2 mA/amp), lower VIO (1.6 mV typ), rail-to-rail output only (not input) | Requires dual supply or level-shifting for true ground-referenced inputs | Select when higher speed (6.4 MHz GBW) and tighter DC specs outweigh single-supply convenience |
| LM324DR | Bipolar input (20 nA IB), wider VIO spread (7 mV max), no guaranteed 1.4 V operation | Limited to ≥3 V supplies; unsuitable for sub-2 V energy harvesting | Choose for cost-sensitive, non-battery applications where ultra-low IB is not required |
Compared with TLV2464CD and LM324DR, the TLC254CD uniquely combines picoampere input bias, guaranteed 1.4 V operation, and rail-inclusive common-mode range - making it irreplaceable in high-impedance, ultra-low-power, single-supply sensor systems where input loading and supply headroom are critical constraints.
Availability
TLC254CD is available at Aetrix Electronics and suitable for portable medical diagnostics, industrial process transmitters, and battery-powered data loggers requiring stable component supply across extended production lifecycles.
Supply support for TLC254CD 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 focused on analog and embedded processing technologies, serving industrial, automotive, and communications markets with high-reliability components.
The TLC254 series was designed specifically for low-power, single-supply precision analog signal conditioning - targeting battery-operated instrumentation, remote sensors, and energy-constrained embedded systems.
FAQ
What is the minimum operating supply voltage for the TLC254CD?
The TLC254CD is fully specified to operate at 1.4 V, with functional performance including input common-mode range, output swing, and gain bandwidth validated down to this voltage. This enables direct compatibility with single-cell lithium, NiMH, or primary battery sources without regulation - a key differentiator versus standard bipolar op-amps that require ≥3 V.
Does the TLC254CD support true rail-to-rail input operation?
Yes, the TLC254CD features a common-mode input voltage range that includes the negative rail (VDD–/GND), allowing inputs to be driven all the way to ground in single-supply configurations. This eliminates the need for external biasing networks when interfacing with ground-referenced sensors or DAC outputs.
What is the input bias current specification for the TLC254CD?
The TLC254CD exhibits a typical input bias current of 1 pA at 25°C, with a maximum of 60 pA over the full 0°C to 70°C temperature range. This ultra-low value is enabled by the LinCMOS™ process and makes the TLC254CD suitable for high-impedance applications such as photodiode transimpedance amplifiers and piezoelectric sensor interfaces.
Is the TLC254CD pin-compatible with other devices in the TLC25x4 family?
Yes, all variants in the TLC254, TLC25L4, and TLC25M4 families share identical 14-pin SOIC (D) pinouts and footprints. The TLC254CD is functionally interchangeable with TLC254ACD and TLC254BCD at the board level - only the input offset voltage grade (10 mV vs. 5 mV vs. 2 mV) differs between these variants.
What packaging options are available for the TLC254CD?
The TLC254CD is offered in the 14-pin small-outline integrated circuit (SOIC) package (D package), available in tape-and-reel format as TLC254CDR. Chip form (TLC254Y) is also available for hybrid or custom assembly, but the D package remains the standard surface-mount option for automated PCB assembly.
TLC254CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- Output Type:
- Open Drain
- Slew Rate:
- 4.5V/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:
- -
- Voltage - Supply Span (Min):
- 1.4 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TLC254CD FAQ
1.How can I place an order for TLC254CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC254CD 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 TLC254CD reliable?
The price and inventory of TLC254CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC254CD is usually 5 days.
3.What payment methods are accepted for TLC254CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC254CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC254CD?
TLC254CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC254CD 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 TLC254CD?
For technical support, including TLC254CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC254CD requirements.
6.How does Aetrix verify that TLC254CD is sourced from the original manufacturer or authorized distributors?
All TLC254CD 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 TLC254CD meets industry standards.
7.What is the process for return or replacement of TLC254CD?
All TLC254CD units undergo pre-shipment inspection (PSI). If there is an issue with TLC254CD, 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 TLC254CD part is unused and in its original packaging.
Return procedure for TLC254CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC254CD Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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