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Texas Instruments TLC354IDR
- Part No.:
- TLC354IDR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC354IDR.pdf
- Description:
- IC COMPARATOR 4 DIFF 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,346
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Product details
Overview
TLC354IDR from Texas Instruments is a LinCMOS™ quadruple differential comparator IC designed for precision voltage comparison in low-power, single- or dual-supply systems. It features 5 mV max input offset voltage, 5 pA typical input bias current, 300 µA supply current at 5 V, and operates from 1.4 V to 16 V supply - enabling use in battery-powered instrumentation, industrial sensor interfaces, and power supply monitoring circuits.
For engineers reviewing the TLC354IDR datasheet, TLC354IDR pinout, TLC354IDR application, or TLC354IDR equivalent, key selection considerations include its open-drain n-channel outputs compatible with TTL/MOS/CMOS logic, rail-to-rail common-mode input range including ground, and industrial temperature rating (–40°C to +85°C) in SOIC-14 package.
Technical Context
The TLC354IDR integrates four independent comparators on a single die using LinCMOS™ process technology, delivering ultra-high input impedance (>10¹² Ω) and sub-picoampere input bias current. Its architecture supports single-supply operation down to 1.4 V and dual-supply configurations where VDD–VSS ≥ 1.4 V, with inputs referenced to either supply rail.
All four channels share common VDD and VDD–/GND terminals, feature identical electrical specifications, and provide open-drain outputs that enable wired-AND logic implementation. Input offset voltage stability is specified at 0.23 µV/month (including first 30 days), supporting long-term precision applications without recalibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.4 V to 16 V - enables direct integration into 1.8 V, 3.3 V, and 5 V systems, plus extended battery life in low-voltage portable designs. |
| Input Offset Voltage (max) | 5 mV at 25°C - ensures reliable detection of small differential signals above ~5 mV without external trimming. |
| Input Bias Current (typ) | 5 pA - permits direct connection to high-impedance sources (e.g., pH electrodes, photodiodes) without signal loading. |
| Supply Current (typ @ 5 V) | 300 µA for all four comparators - supports always-on sensing in energy-constrained IoT nodes and wearables. |
| Response Time (typ) | 650 ns at 5 V with 100-mV step - suitable for medium-speed threshold detection in motor control feedback and overvoltage protection. |
| Operating Temperature | –40°C to +85°C - qualified for industrial automation, automotive body electronics, and outdoor environmental monitoring. |
| Output Type | Open-drain n-channel - allows flexible pull-up to any logic rail (3.3 V, 5 V, or higher) and wired-AND bus configuration. |
Pinout & Package
Package: SOIC-14 (D package), 8.75 mm × 4.0 mm × 1.75 mm max height, tape-and-reel (R suffix), RoHS-compliant, NIPDAU lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT, 2OUT, 3OUT, 4OUT | Comparator output (n-channel open-drain) | Active-low outputs requiring external pull-up; support wired-AND logic and mixed-voltage interfacing. |
| 1IN+, 1IN–, 2IN+, 2IN–, 3IN+, 3IN–, 4IN+, 4IN– | Differential input pairs per channel | High-impedance inputs accept signals from sensors or reference dividers without loading; common-mode range includes ground. |
| VDD | Positive supply terminal | Accepts 1.4 V to 16 V; powers all four comparators and internal ESD protection circuitry. |
| VDD–/GND | Negative supply / ground reference | Serves as return path for all channels; supports true single-supply operation with inputs referenced to ground. |
Key Features
| Feature | Design Value |
|---|---|
| LinCMOS™ process technology | Enables 5 pA input bias current and >10¹² Ω input impedance - critical for microvolt-level signal integrity in precision analog front-ends. |
| ESD protection (2000 V HBM) | Integrated protection per MIL-STD-833C Method 3015 - reduces need for external TVS diodes in board-level ESD design. |
| Rail-to-rail common-mode input | Input range includes ground and extends to VDD–1 V at 5 V - simplifies level-shifting in single-supply sensor conditioning stages. |
| Pin-compatible with LM339 | Direct drop-in replacement for legacy quad comparators - enables upgrade to lower power and higher precision without PCB redesign. |
| Ultrastable offset drift | 0.23 µV/month aging rate - maintains accuracy over years in uncalibrated industrial equipment and remote monitoring systems. |
Applications
| Battery Voltage Monitor | Industrial Threshold Detector |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during charging/discharging to trigger cutoff or alert. IC Role / Device Role / Timing Role: Quad comparator compares cell voltage against four reference thresholds (e.g., 4.2 V, 4.0 V, 3.5 V, 3.0 V) simultaneously. Use Value: Enables precise, low-power state-of-charge estimation using only one IC and passive resistive dividers - no ADC or microcontroller required. | Use Scenario: Detecting out-of-tolerance pressure, temperature, or flow signals in PLC I/O modules. IC Role / Device Role / Timing Role: Four independent comparators condition analog sensor outputs into clean digital flags for controller input. Use Value: Eliminates software-based threshold checking; provides deterministic, sub-microsecond response to fault conditions. |
| Power Supply Sequencing | Overvoltage Protection Circuit |
Use Scenario: Ensuring correct power-up order across multiple rails (e.g., 12 V → 5 V → 3.3 V → 1.8 V) in FPGA or ASIC systems. IC Role / Device Role / Timing Role: Each comparator monitors one rail and asserts enable/disable signals to downstream regulators upon reaching target voltage. Use Value: Prevents latch-up and damage by enforcing strict sequencing without timing-critical firmware delays. | Use Scenario: Safeguarding downstream circuitry against transient overvoltage events on DC input lines. IC Role / Device Role / Timing Role: One comparator channel compares input voltage to a fixed overvoltage threshold; output drives crowbar or shutdown FET. Use Value: Provides hardware-fast (<1 µs) protection independent of system MCU - critical for compliance with IEC 61000-4-5 surge immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Higher input offset (7 mV max), 250 nA input bias current, 1.5 mA supply current - less precise, higher power. | Legacy industrial controls where cost dominates over precision and power efficiency. | Select LM339DR only when existing designs require exact footprint compatibility and performance margin allows. |
| TLC3704CDR | CMOS rail-to-rail inputs, 5 mV offset, but 10 µA supply current - faster (200 ns), yet 33× higher quiescent current than TLC354IDR. | Medium-speed, rail-to-rail input applications where supply current <1 mA is acceptable. | Choose TLC3704CDR when input common-mode range must extend beyond VDD (e.g., VDD+0.3 V), not needed for TLC354IDR's ground-inclusive range. |
Compared with LM339DR and TLC3704CDR, the TLC354IDR delivers the lowest power consumption (300 µA vs. mA-range) while maintaining competitive offset and industrial temperature capability - making it optimal for always-on, battery-sensitive, and long-life embedded systems.
Availability
TLC354IDR is available at Aetrix Electronics and suitable for industrial sensor interfaces, battery management systems, and power supply monitoring requiring stable component supply, long-lifecycle assurance, and RoHS-compliant sourcing.
Supply support for TLC354IDR 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, with decades of expertise in precision analog ICs and industrial-grade components.
The TLC354IDR belongs to TI's LinCMOS™ comparator family, engineered for ultra-low-power, high-input-impedance voltage comparison in harsh environments - targeting instrumentation, factory automation, and energy-efficient portable electronics.
FAQ
What is the maximum supply voltage for the TLC354IDR?
The TLC354IDR supports a maximum supply voltage of 16 V under recommended operating conditions, with absolute maximum rating at 18 V. Operation above 16 V risks parametric degradation and is not guaranteed per datasheet specifications. The device is optimized for 1.4 V to 16 V operation, making it suitable for both low-voltage battery systems and standard 12 V industrial rails.
Does the TLC354IDR require external pull-up resistors on its outputs?
Yes, the TLC354IDR requires external pull-up resistors on all four open-drain outputs (1OUT–4OUT). Its n-channel open-drain structure cannot source current; pull-ups to VDD or another logic rail are mandatory to establish valid HIGH logic levels. Typical values range from 2.2 kΩ to 10 kΩ depending on speed and load requirements - the TLC354IDR itself draws zero current in the HIGH state.
Is the TLC354IDR pin-compatible with the LM339?
Yes, the TLC354IDR is pin-compatible with the LM339 in SOIC-14 (D) package. Pin assignments for inputs, outputs, VDD, and GND match identically. This allows direct replacement in existing LM339 layouts, delivering improved input bias current (5 pA vs. 250 nA), lower supply current (300 µA vs. 1.5 mA), and enhanced offset stability - without PCB changes.
What is the input common-mode voltage range of the TLC354IDR?
The TLC354IDR supports a common-mode input voltage range from 0 V (ground) up to VDD–1 V at 5 V supply, and down to 0.2 V at 1.4 V supply. This rail-to-ground capability enables direct interface with grounded sensors and single-supply op-amp stages without level-shifting circuitry - a key advantage over comparators requiring input bias above ground.
Can the TLC354IDR operate from a 1.4 V single supply?
Yes, the TLC354IDR is fully specified to operate from a 1.4 V single supply, drawing only 130 µA typical supply current at that voltage. Its LinCMOS™ process enables functional operation at this ultra-low voltage, making it ideal for coin-cell or primary battery applications where extended shelf life and minimal quiescent drain are essential - unlike most comparators that require ≥2.7 V.
TLC354IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- LinCMOS™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Differential
- Number of Elements:
- 4
- Output Type:
- CMOS, MOS, Open-Drain, TTL
- Voltage - Supply, Single/Dual (±):
- 1.4V ~ 16V, ±0.7V ~ 8V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 5pA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 800µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
TLC354IDR FAQ
1.How can I place an order for TLC354IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC354IDR 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 TLC354IDR reliable?
The price and inventory of TLC354IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC354IDR is usually 5 days.
3.What payment methods are accepted for TLC354IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC354IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC354IDR?
TLC354IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC354IDR 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 TLC354IDR?
For technical support, including TLC354IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC354IDR requirements.
6.How does Aetrix verify that TLC354IDR is sourced from the original manufacturer or authorized distributors?
All TLC354IDR 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 TLC354IDR meets industry standards.
7.What is the process for return or replacement of TLC354IDR?
All TLC354IDR units undergo pre-shipment inspection (PSI). If there is an issue with TLC354IDR, 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 TLC354IDR part is unused and in its original packaging.
Return procedure for TLC354IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC354IDR Tags
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