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Texas Instruments TLC254ACN
- Part No.:
- TLC254ACN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC254ACN.pdf
- Description:
- IC CMOS 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,589
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Product details
Overview
TLC254ACN 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 5 mV max input offset voltage (VIO), 1 pA typical input bias current, 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 TLC254ACN datasheet, TLC254ACN pinout, TLC254ACN application, or TLC254ACN equivalent, this device is selected for ultra-low-input-current analog front-ends where input impedance >10¹² Ω, supply headroom <2 V, and offset stability over temperature are critical design constraints.
Technical Context
The TLC254ACN uses Texas Instruments' silicon-gate LinCMOS™ process to achieve stable VIO grading (5 mV max at 25°C), extremely high input impedance (>10¹² Ω), and near-zero input bias/offset currents (1 pA typ). Its input stage operates with true single-supply capability, supporting common-mode voltages down to VDD–/GND.
It is internally compensated for unity-gain stability and features ESD protection rated to 2000 V (MIL-STD-883C, Method 3015.1). The device is characterized for 0°C to 70°C operation and exhibits low noise (25 nV/√Hz at 1 kHz) in high-bias configuration-though TLC254ACN is the medium-bias variant with 600 µA total supply current at 5 V.
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 (3.0–4.2 V), alkaline (1.5 V × 2), or solar-charged systems without regulation. |
| Input Offset Voltage (Max) | 5 mV at 25°C - supports DC-coupled transducer amplification with ≤0.5% initial gain error in 1 V full-scale designs. |
| Input Bias Current (Typ) | 1 pA - preserves signal integrity in high-impedance pH probes, photodiode TIA feedback networks, and piezoelectric sensor interfaces. |
| Common-Mode Input Range | Includes negative rail (VDD–/GND) - allows ground-referenced input signals without level-shifting circuitry. |
| Supply Current (Typ) | 600 µA (four amps, VDD = 5 V) - balances speed and power for always-on monitoring nodes with >1-year battery life. |
| Unity-Gain Bandwidth | 525 kHz at VDD = 5 V - sufficient for anti-aliasing filters, active low-pass stages, and sensor signal bandwidths up to ~50 kHz. |
| ESD Rating | 2000 V HBM - meets basic handling robustness requirements for industrial assembly and field-deployed equipment. |
Pinout & Package
Package: 14-pin plastic DIP (N package), through-hole mountable, 0°C to 70°C operating range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Amplifier A output | Drives loads ≥10 kΩ; swing limited by supply rails and load current. |
| 1IN– | Amplifier A inverting input | High-impedance node; connects to feedback network or summing junction. |
| 1IN+ | Amplifier A non-inverting input | Accepts input signals from 0 V to VDD–0.2 V at 5 V supply. |
| VDD | Positive supply rail | Single supply connection; accepts 1.4–16 V; bypass capacitor recommended. |
| 2IN+ | Amplifier B non-inverting input | Independent high-Z input; shares VDD and VDD–/GND with other amps. |
| 2IN– | Amplifier B inverting input | Used for differential gain stages or inverting configurations. |
| 2OUT | Amplifier B output | Electrically isolated output; no internal crosstalk between channels. |
| 4OUT | Amplifier D output | Final channel output; pin 14 per top-view diagram. |
| 4IN– | Amplifier D inverting input | Supports multi-stage filtering or independent signal paths. |
| 4IN+ | Amplifier D non-inverting input | Enables four independent op-amp functions on one IC. |
| VDD–/GND | Negative supply / ground reference | Return path for all four amplifiers; must be low-impedance. |
| 3IN+ | Amplifier C non-inverting input | Third channel input; pin 9 in standard DIP layout. |
| 3OUT | Amplifier C output | Third channel output; pin 8 in standard DIP layout. |
Key Features
| Feature | Design Value |
|---|---|
| LinCMOS™ process technology | Delivers 1 pA input bias current and stable VIO drift (0.1 µV/month), enabling decade-scale calibration retention in metering applications. |
| True single-supply operation | Common-mode input range includes VDD–/GND, eliminating need for dual supplies or level shifters in 0–VDD signal chains. |
| Low-voltage capability | Functional down to 1.4 V supply - supports energy harvesting systems and coin-cell-powered IoT endpoints. |
| Internal ESD protection | 2000 V HBM rating reduces risk of field failure during handling or board-level ESD events. |
| Quad amplifier integration | Four independent, electrically isolated op-amps reduce PCB area and interconnect complexity vs. discrete solutions. |
Applications
| Portable Gas Sensor Signal Conditioning | Low-Power Data Acquisition Front-End |
|---|---|
|
Use Scenario: Amplifying microamp-level current from electrochemical gas sensors powered by CR2032 batteries. IC Role / Device Role / Timing Role: TLC254ACN serves as transimpedance amplifier and buffer with rail-to-rail input to capture full sensor dynamic range. Use Value: 1 pA input bias avoids sensor loading errors; 5 mV VIO enables ±2.5 mV resolution in 5 V full-scale ADC interface. |
Use Scenario: Multi-channel analog front-end for battery-operated environmental monitors measuring temperature, humidity, and light. IC Role / Device Role / Timing Role: TLC254ACN provides simultaneous signal conditioning for four passive sensors with shared supply and ground. Use Value: 600 µA total supply current extends CR2032 battery life beyond 2 years in periodic-sampling mode. |
| Solar-Powered Remote Telemetry Unit | Medical Disposable Electrode Interface |
|
Use Scenario: Signal amplification and filtering in off-grid telemetry units powered by small solar panels and supercapacitors. IC Role / Device Role / Timing Role: TLC254ACN operates directly from unregulated 1.8–5.5 V solar harvest output without LDO. Use Value: 1.4 V minimum supply voltage eliminates power conversion losses; 25 nV/√Hz noise ensures clean ECG-grade signal integrity. |
Use Scenario: Biopotential acquisition from dry-contact electrodes in single-use patient monitors. IC Role / Device Role / Timing Role: TLC254ACN acts as first-stage instrumentation amplifier driver with ultra-high input impedance. Use Value: 10¹² Ω input impedance prevents electrode polarization; 5 mV VIO supports sub-millivolt bio-signal fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464AIDR | Higher supply current (1.4 mA), lower VIO (1.6 mV), rail-to-rail output (TLC254ACN has non-rail-to-rail output) | Better for precision DC-coupled stages requiring full output swing; less suitable for sub-1 mA battery budgets | Select TLV2464AIDR when output swing to within 10 mV of rails is required and power budget allows +133% current draw. |
| LM324DR | Higher VIO (7 mV max), higher input bias (20 nA), wider temp range (–40°C to 125°C), no LinCMOS™ low-current advantage | Preferred for cost-sensitive industrial controls where ultra-low bias isn't needed and extended temperature is mandatory | Select LM324DR only when operating above 70°C or below 0°C is required, and 20 nA input bias is acceptable. |
Compared with TLV2464AIDR and LM324DR, the TLC254ACN uniquely combines 1 pA input bias, 5 mV VIO, and 1.4 V operation-making it irreplaceable in ultra-low-power, high-impedance sensor front-ends where both voltage headroom and leakage current are limiting factors.
Availability
TLC254ACN is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered telemetry, and medical disposable electronics requiring stable component supply across long production lifecycles.
Supply support for TLC254ACN 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, embedded processing, and connectivity technologies since 1930.
The TLC254 family was designed for ultra-low-power, high-input-impedance analog signal conditioning in energy-constrained systems-targeting portable medical devices, remote sensors, and solar-powered instrumentation.
FAQ
What is the maximum operating temperature range for the TLC254ACN?
The TLC254ACN is characterized for operation from 0°C to 70°C ambient temperature. It is not rated for extended industrial (–40°C to 125°C) or automotive temperature ranges. Exceeding 70°C may degrade input offset voltage drift and increase supply current beyond datasheet specifications. Always verify thermal derating using the N-package dissipation rating table (736 mW at 25°C, 9.2 mW/°C derating).
Does the TLC254ACN support rail-to-rail output swing?
No, the TLC254ACN does not provide rail-to-rail output. At VDD = 5 V, its high-level output voltage (VOH) is typically 3.8 V and low-level output voltage (VOL) is typically 0 mV - resulting in ~1.2 V of headroom at the positive rail and minimal headroom at ground. For full rail-to-rail output, consider alternatives like TLV2464AIDR, but note its higher supply current.
Can the TLC254ACN operate from a 1.5 V alkaline battery?
Yes, the TLC254ACN is fully specified down to 1.4 V supply voltage and remains functional as the battery discharges to ~1.2 V (though parameters like slew rate and bandwidth degrade gradually). Its true single-supply architecture and rail-inclusive input range make it ideal for direct connection to single-cell alkaline or NiMH sources without voltage boosting.
How does the input offset voltage of TLC254ACN compare to the standard TLC254CN?
The TLC254ACN has a maximum input offset voltage (VIO) of 5 mV at 25°C, while the standard TLC254CN is graded to 10 mV max. Both share identical pinout, package, and electrical architecture - the "A" suffix denotes tighter VIO binning. This makes TLC254ACN preferable in DC-critical applications like precision thermistor amplification or low-gain strain gauge bridges.
Is the TLC254ACN pin-compatible with other variants in the TLC25x4 family?
Yes, all TLC25x4 variants - including TLC254CN, TLC254ACN, TLC254BCN, TLC25L4ACN, and TLC25M4ACN - share identical 14-pin DIP (N) package pinout and footprint. They differ only in internal VIO grading, bias current optimization (low/medium/high), and associated performance trade-offs (e.g., slew rate, bandwidth, supply current), allowing drop-in selection based on system requirements.
TLC254ACN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- 900 µV
- 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:
- Through Hole
- Supplier Device Package:
- 14-PDIP
TLC254ACN FAQ
1.How can I place an order for TLC254ACN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC254ACN 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 TLC254ACN reliable?
The price and inventory of TLC254ACN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC254ACN is usually 5 days.
3.What payment methods are accepted for TLC254ACN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC254ACN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC254ACN?
TLC254ACN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC254ACN 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 TLC254ACN?
For technical support, including TLC254ACN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC254ACN requirements.
6.How does Aetrix verify that TLC254ACN is sourced from the original manufacturer or authorized distributors?
All TLC254ACN 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 TLC254ACN meets industry standards.
7.What is the process for return or replacement of TLC254ACN?
All TLC254ACN units undergo pre-shipment inspection (PSI). If there is an issue with TLC254ACN, 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 TLC254ACN part is unused and in its original packaging.
Return procedure for TLC254ACN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC254ACN 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
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