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Texas Instruments TLC354CPWR
- Part No.:
- TLC354CPWR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC354CPWR.pdf
- Description:
- IC COMPARATOR 4 DIFF 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,948
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Product details
Overview
TLC354CPWR from Texas Instruments is a LinCMOS™ quadruple differential comparator IC designed for single- or dual-supply operation across 1.4 V to 18 V. It features four independent open-drain comparators with 5 pA typical input bias current, 10¹² Ω typical input impedance, and 5 mV max input offset voltage at 25°C - enabling precision low-power threshold detection in battery-powered sensor interfaces.
For engineers reviewing the TLC354CPWR datasheet, TLC354CPWR pinout, TLC354CPWR application, or TLC354CPWR equivalent, key selection considerations include its TSSOP-14 package, 300 µA supply current at 5 V, ultrastable offset drift (0.23 µV/month), rail-to-rail common-mode input range including ground, and TTL/MOS/CMOS-compatible outputs.
Technical Context
The TLC354CPWR implements four independent high-impedance voltage comparators using LinCMOS™ process technology, supporting both single-supply (1.4–18 V) and dual-supply operation (with ≥1.4 V total differential). Each comparator has n-channel open-drain output, requiring external pull-up for logic-level translation.
Its input stage delivers 10¹² Ω typical input impedance and 5 pA typical input bias current, enabling direct interfacing with high-impedance sources like photodiodes or precision voltage dividers. The device is characterized for 0°C to 70°C operation and offers built-in ESD protection rated at 2000 V per MIL-STD-833C Method 3015.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.4 V to 18 V - supports ultra-low-voltage battery operation down to coin-cell levels. |
| Input Bias Current | 5 pA typ - minimizes loading error on high-impedance signal sources. |
| Input Offset Voltage | 5 mV max at 25°C - ensures reliable detection thresholds in precision level-sensing circuits. |
| Supply Current (4 ch) | 300 µA typ at 5 V - enables multi-comparator functions in power-constrained systems. |
| Response Time | 650 ns typ at 5 V with 100-mV step - suitable for medium-speed window detection and overvoltage monitoring. |
| Common-Mode Input Range | Includes ground to VDD−1.5 V - allows direct sensing of signals referenced to system ground. |
| Output Type | N-channel open-drain - enables wired-AND logic, flexible pull-up voltage selection, and interface with mixed-voltage logic families. |
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 |
|---|---|---|
| 1, 2, 5, 6, 8, 9, 11, 12, 13, 14 | Comparator Inputs & Outputs | Pins 1/2 = CH1 IN+/IN−; 5/6 = CH2 IN+/IN−; 8/9 = CH3 IN+/IN−; 11/12 = CH4 IN+/IN−; 3/7/10/14 = CH1–CH4 OUT |
| 3, 7, 10, 14 | Open-Drain Output Terminals | Each drives low when corresponding comparator output is active; requires external pull-up for logic HIGH. |
| 4 | VDD | Positive supply terminal for all four comparators; accepts 1.4–18 V DC. |
| 13 | VDD–/GND | Ground reference terminal; common return for all channels and internal circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| LinCMOS™ Process Technology | Enables 10¹² Ω input impedance and 5 pA input bias current - critical for high-Z sensor front-ends. |
| Ultra-Stable Input Offset Drift | 0.23 µV/month typical - maintains long-term accuracy without recalibration in monitoring applications. |
| Single- or Dual-Supply Operation | Operates from 1.4 V to 18 V supply or split supplies totaling ≥1.4 V - simplifies design across diverse power architectures. |
| ESD Protection | 2000 V HBM rating per MIL-STD-833C - improves robustness during handling and board assembly. |
| Pin Compatibility | Pinout matches LM339 - allows drop-in replacement in legacy designs with identical PCB layout. |
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 performs simultaneous under-voltage lockout (UVLO), over-voltage protection (OVP), and charge-state flag generation. Use Value: 1.4 V minimum supply enables direct operation from partially discharged cells; 5 pA input bias prevents loading of high-resistance divider networks. | Use Scenario: Detecting out-of-tolerance analog sensor outputs (e.g., pressure, temperature) in PLC I/O modules. IC Role / Device Role / Timing Role: Four independent comparators implement redundant fault windows and status flags for safety-critical inputs. Use Value: Rail-to-rail common-mode input range (including ground) allows direct connection to 0–10 V industrial sensors without level-shifting. |
| Power Supply Sequencing Controller | Optical Smoke Detector Interface |
Use Scenario: Verifying correct startup order and stable voltage levels across multiple rails in FPGA or ASIC power systems. IC Role / Device Role / Timing Role: Each comparator monitors one supply rail against a precision reference to assert enable/disable signals. Use Value: Open-drain outputs allow wired-AND of multiple "OK" signals into a single system reset line without additional logic gates. | Use Scenario: Converting weak photocurrent from smoke chamber IR detectors into clean digital alarm pulses. IC Role / Device Role / Timing Role: One comparator amplifies and compares filtered detector signal against adjustable threshold; others handle self-test and ambient compensation. Use Value: 10¹² Ω input impedance preserves signal integrity from high-impedance photodiode; low IDD extends battery life in standalone 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 input bias current (25 nA typ), wider supply range (2–36 V), no guaranteed 1.4 V operation. | Less suitable for sub-2 V battery monitoring; better for industrial 24 V systems. | Select LM339DR only when operating above 2 V or requiring higher supply voltage tolerance. |
| TLC3704CDR | CMOS push-pull outputs (no external pull-up needed), lower IDD (20 µA typ), but higher VIO (10 mV max). | Eliminates pull-up resistors but sacrifices offset accuracy; not pin-compatible. | Choose TLC3704CDR when board space or power budget favors integrated outputs and ±5 mV offset is acceptable. |
Compared with LM339DR and TLC3704CDR, the TLC354CPWR uniquely balances ultra-low supply voltage (1.4 V), femtoampere-level input bias, and LM339 pin compatibility - making it optimal for portable, precision, and legacy-replacement designs where power and signal integrity are co-constrained.
Availability
TLC354CPWR is available at Aetrix Electronics and suitable for battery management systems, industrial sensor interfaces, power sequencing controllers, and optical smoke detectors requiring stable component supply across extended production lifecycles.
Supply support for TLC354CPWR 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 TLC354 belongs to TI's LinCMOS™ comparator product line, engineered for high-input-impedance, low-power, and stable DC performance in measurement, monitoring, and control applications across consumer, industrial, and automotive segments.
FAQ
What is the minimum operating supply voltage for the TLC354CPWR?
The TLC354CPWR operates down to 1.4 V, enabling direct use with partially discharged alkaline, NiMH, or Li-ion batteries. This specification is validated across the full 0°C to 70°C temperature range and is a key differentiator versus standard bipolar comparators like the LM339, which require ≥2 V. The 1.4 V capability is achieved via LinCMOS™ process optimization and verified in the recommended operating conditions table of the SLCS116B datasheet.
Does the TLC354CPWR require external pull-up resistors on its outputs?
Yes, the TLC354CPWR features n-channel open-drain outputs (pins 3, 7, 10, 14), so each output must be pulled up to a logic-compatible voltage (e.g., 3.3 V or 5 V) via an external resistor. Typical values range from 2.2 kΩ to 10 kΩ depending on speed and drive strength requirements. This architecture enables wired-AND logic and mixed-voltage interfacing - a core functional trait confirmed in the device description and absolute maximum ratings sections of the datasheet.
Is the TLC354CPWR pin-compatible with the LM339?
Yes, the TLC354CPWR is explicitly pin-compatible with the LM339, sharing identical pin assignments for all 14 terminals including VDD (pin 4), GND (pin 13), and the four comparator input/output pairs. This compatibility is stated in the device description ("Pin-Compatible With LM339") and verified by the top-view package diagram labeled "D, N, OR PW PACKAGE (TOP VIEW)" showing matching pin numbering. No PCB redesign is required for drop-in replacement.
What is the input offset voltage specification for the TLC354CPWR at room temperature?
The TLC354CPWR has a maximum input offset voltage of 5 mV at 25°C, with typical performance at 2 mV. This value is specified in the "ELECTRICAL CHARACTERISTICS" tables for VDD = 1.4 V and VDD = 5 V, and applies to the TLC354C grade (0°C to 70°C), which includes the TLC354CPWR. The datasheet further confirms that this limit ensures output states exceed 1.25 V or fall below 150 mV under defined test conditions with a 10-kΩ pull-up.
Can the TLC354CPWR operate from dual power supplies?
Yes, the TLC354CPWR supports dual-supply operation provided the total differential voltage between VDD (pin 4) and VDD–/GND (pin 13) remains within 1.4 V to 18 V. For example, it can function with +5 V and –3 V supplies (8 V total), or ±9 V (18 V total). This flexibility is documented in the "description" section and "recommended operating conditions" table, where supply voltage is defined as VDD regardless of reference point - confirming true dual-supply capability beyond single-rail biasing.
TLC354CPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-TSSOP (0.173", 4.40mm 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:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-TSSOP
TLC354CPWR FAQ
1.How can I place an order for TLC354CPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC354CPWR 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 TLC354CPWR reliable?
The price and inventory of TLC354CPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC354CPWR is usually 5 days.
3.What payment methods are accepted for TLC354CPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC354CPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC354CPWR?
TLC354CPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC354CPWR 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 TLC354CPWR?
For technical support, including TLC354CPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC354CPWR requirements.
6.How does Aetrix verify that TLC354CPWR is sourced from the original manufacturer or authorized distributors?
All TLC354CPWR 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 TLC354CPWR meets industry standards.
7.What is the process for return or replacement of TLC354CPWR?
All TLC354CPWR units undergo pre-shipment inspection (PSI). If there is an issue with TLC354CPWR, 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 TLC354CPWR part is unused and in its original packaging.
Return procedure for TLC354CPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC354CPWR Tags
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