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Texas Instruments TLC354CPW
- Part No.:
- TLC354CPW
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC354CPW.pdf
- Description:
- IC COMPARATOR 4 DIFF 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,045
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Product details
Overview
TLC354CPW from Texas Instruments is a LinCMOS™ quadruple differential comparator IC designed for low-voltage, high-impedance sensing and threshold detection in single- or dual-supply systems. It delivers 5 mV max input offset voltage at 25°C, 5 pA typical input bias current, and operates from 1.4 V to 16 V supply - enabling use in battery-powered instrumentation, power supply monitors, and analog front-end comparators.
For engineers reviewing the TLC354CPW datasheet, TLC354CPW pinout, TLC354CPW application, or TLC354CPW equivalent, key selection considerations include its open-drain n-channel outputs compatible with TTL/MOS/CMOS logic, ultra-low 130 µA supply current at 1.4 V, and guaranteed operation across 0°C to 70°C ambient temperature.
Technical Context
The TLC354CPW integrates four independent comparators on a single die using LinCMOS™ process technology, enabling direct interface to high-impedance sources (≥10¹² Ω input impedance). Each comparator features rail-to-rail common-mode input range down to ground and supports both single-supply (1.4–16 V) and dual-supply operation (ΔV = 1.4–18 V).
Its n-channel open-drain output stage allows wired-AND logic configuration and level translation across voltage domains. The device includes built-in ESD protection rated at 2000 V per MIL-STD-833C Method 3015 and exhibits ultrastable offset drift of ≤0.23 µV/month, including first 30 days.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.4 V to 16 V - enables direct integration into coin-cell (1.5 V) and Li-ion (3.7 V nominal) powered systems without regulation. |
| Input Offset Voltage (max) | 5 mV at 25°C - ensures reliable detection of small differential signals above ~10 mV in precision threshold applications. |
| Input Bias Current (typ) | 5 pA - minimizes loading error on high-impedance sensors (e.g., photodiodes, pH electrodes, thermistors). |
| Supply Current (typ) | 130 µA at 1.4 V - supports multi-year battery life in always-on monitoring circuits. |
| Response Time | 200 ns (TTL-level step, CL = 15 pF) - suitable for medium-speed window comparators and overvoltage latch circuits. |
| Output Type | N-channel open-drain - permits flexible pull-up to any logic rail (3.3 V, 5 V, or higher) and positive-logic wired-AND bus sharing. |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded control, consumer electronics, and industrial auxiliary functions. |
Pinout & Package
TSSOP-14 package (PW), 5.0 mm × 4.4 mm × 1.2 mm height, lead pitch 0.65 mm, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT, 2OUT, 3OUT, 4OUT | Comparator output (n-channel open-drain) | Each drives low when IN+ > IN−; requires external pull-up for logic-high state and wired-AND functionality. |
| 1IN+, 1IN−, 2IN+, 2IN−, 3IN+, 3IN−, 4IN+, 4IN− | Differential input pairs | Independent high-impedance inputs per comparator; common-mode range includes ground and extends to VDD − 1.5 V. |
| VDD | Positive supply rail | Single-supply connection point; supports 1.4–16 V; must be decoupled locally for noise immunity. |
| VDD–/GND | Ground reference / negative supply | Return path for all comparators; used as GND in single-supply mode or as VSS in dual-supply configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 5 pA typical - preserves signal integrity in megohm-range sensor interfaces without active guarding. |
| Rail-to-rail input common-mode range | Includes ground and extends to VDD − 1.5 V - eliminates need for level-shifting in low-side sensing (e.g., current-sense amplifiers). |
| ESD robustness | 2000 V HBM rating - reduces handling sensitivity and improves manufacturing yield in standard assembly lines. |
| Pin compatibility | Direct replacement for LM339 in TSSOP-14 footprint - enables drop-in upgrade to lower power and improved input performance. |
| Stable long-term offset | ≤0.23 µV/month drift - maintains calibration integrity in unattended monitoring systems over months of continuous operation. |
Applications
| Battery Voltage Monitor | Power Supply Sequencing |
|---|---|
Use Scenario: Detecting undervoltage lockout (UVLO) and overvoltage conditions in portable medical devices powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Four independent comparators monitor battery voltage against fixed thresholds (e.g., 2.8 V, 3.0 V, 4.2 V, 4.35 V) to trigger shutdown or alert signals. Use Value: 130 µA quiescent current extends runtime; 1.4 V minimum supply allows operation down to near-dead battery states. | Use Scenario: Enforcing strict power-up and power-down order across multiple rails (e.g., 1.8 V, 3.3 V, 5 V) in FPGA-based systems. IC Role / Device Role / Timing Role: Each comparator validates one rail's presence before enabling the next stage via open-drain wired-AND chain. Use Value: Open-drain outputs simplify OR-ing of enable signals without diode isolation; rail-to-rail input supports direct sensing of low-voltage rails. |
| Analog Signal Window Detector | Industrial Sensor Interface |
Use Scenario: Identifying out-of-range analog outputs from pressure transducers in HVAC controllers. IC Role / Device Role / Timing Role: Two comparators form a window (high/low limits); remaining two generate latched fault flags using cross-coupled feedback. Use Value: 5 mV offset ensures accurate 10–20 mV window margins; 200 ns response supports real-time alarm generation at 10 kHz sampling rates. | Use Scenario: Converting high-impedance pH electrode outputs into digital status signals for water quality analyzers. IC Role / Device Role / Timing Role: Comparator senses electrode potential vs. reference buffer; ultra-low 5 pA bias current prevents measurement error from electrode polarization. Use Value: Input impedance >10¹² Ω avoids loading of glass electrode; stable offset minimizes recalibration frequency in field-deployed units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quadruple comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Higher 250 nA input bias current; 2 mV typical offset; no 1.4 V low-voltage operation. | Not suitable for sub-2 V battery monitoring; less accurate for high-Z sensor interfaces. | Select LM339DR only if legacy design reuse or cost sensitivity outweighs low-power and precision requirements. |
| TLC3702IPW | Push-pull outputs (no external pull-up needed); 5 mV offset; 100 µA supply current at 5 V. | Eliminates pull-up resistors but lacks open-drain flexibility for wired-AND or mixed-voltage interfacing. | Choose TLC3702IPW when board space is constrained and logic-level translation is not required. |
Compared with LM339DR and TLC3702IPW, the TLC354CPW uniquely balances ultra-low input current, sub-2 V operability, and open-drain configurability - making it optimal for battery-constrained, high-impedance analog threshold detection where flexibility and stability are critical.
Availability
TLC354CPW is available at Aetrix Electronics and suitable for battery-powered instrumentation, power supply supervision, and industrial sensor interface applications requiring stable component supply and long-lifecycle support.
Supply support for TLC354CPW 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 digital signal technologies, with decades of expertise in precision analog ICs.
The TLC354 product line was developed for low-power, high-input-impedance comparator applications in commercial-grade instrumentation and portable electronics - emphasizing stability, wide supply range, and ease of integration.
FAQ
What is the maximum supply voltage rating for the TLC354CPW?
The TLC354CPW has an absolute maximum supply voltage (VDD) rating of 18 V. However, the recommended operating range is 1.4 V to 16 V. Exceeding 16 V may compromise parametric performance or reliability, even if within absolute maximum limits. Always observe derating guidelines in the dissipation rating table for elevated temperatures.
Does the TLC354CPW support dual-supply operation?
Yes, the TLC354CPW supports dual-supply operation provided the difference between VDD and VDD–/GND is maintained between 1.4 V and 18 V. For example, ±5 V supplies (10 V total) or +12 V/–3 V (15 V total) are valid. Input common-mode range remains referenced to VDD–/GND, and outputs swing relative to that reference.
Can the TLC354CPW drive a standard TTL load directly?
No - the TLC354CPW features n-channel open-drain outputs and cannot source current. To interface with TTL inputs, an external pull-up resistor to a compatible logic rail (e.g., 5 V or 3.3 V) is required. The value must be selected to ensure VOL ≤ 0.4 V at IOL = 0.6 mA (100–200 mV typical) while limiting power dissipation.
Is the TLC354CPW pin-compatible with the LM339 in the same package?
Yes - the TLC354CPW in TSSOP-14 (PW) is pin-for-pin compatible with the LM339DR in the same package. Both share identical pin numbering, function mapping, and footprint. This allows direct substitution to improve input bias current (5 pA vs. 250 nA) and enable operation down to 1.4 V without layout changes.
What is the typical input offset voltage drift behavior of the TLC354CPW over time?
The TLC354CPW exhibits ultrastable offset voltage drift of typically 0.23 µV per month, including the first 30 days of operation. This specification is measured under worst-case input conditions and reflects long-term calibration stability - critical for applications like environmental sensors or medical monitors where recalibration intervals must be extended.
TLC354CPW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Series:
- LinCMOS™
- Packaging:
- Bulk
- 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:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-TSSOP
TLC354CPW FAQ
1.How can I place an order for TLC354CPW through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC354CPW 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 TLC354CPW reliable?
The price and inventory of TLC354CPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC354CPW is usually 5 days.
3.What payment methods are accepted for TLC354CPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC354CPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC354CPW?
TLC354CPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC354CPW 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 TLC354CPW?
For technical support, including TLC354CPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC354CPW requirements.
6.How does Aetrix verify that TLC354CPW is sourced from the original manufacturer or authorized distributors?
All TLC354CPW 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 TLC354CPW meets industry standards.
7.What is the process for return or replacement of TLC354CPW?
All TLC354CPW units undergo pre-shipment inspection (PSI). If there is an issue with TLC354CPW, 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 TLC354CPW part is unused and in its original packaging.
Return procedure for TLC354CPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC354CPW Tags
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LM2903DR
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LM339DR
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LM339PWR
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LM393DT
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LM2903DT
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LM393DR
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LM2903P
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NCX2200GMAZ
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