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Texas Instruments TLC339CDB
- Part No.:
- TLC339CDB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- -
- Datasheet:
-
TLC339CDB.pdf
- Description:
- QUAD COMPARATOR
- Quantity:
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Product details
Overview
TLC339CDB from Texas Instruments is a quad differential voltage comparator with open-drain CMOS outputs, designed for single-supply operation from 3 V to 16 V. It delivers 2.5 µs typical propagation delay with 5-mV overdrive, consumes only 200 µW typical at 5 V, and features 10¹² Ω typical input impedance - enabling precision threshold detection in battery-powered sensor interfaces and power-monitoring circuits.
For engineers reviewing the TLC339CDB datasheet, TLC339CDB pinout, TLC339CDB application, or TLC339CDB equivalent, key selection considerations include its commercial-temperature-range rating (0°C to 70°C), SSOP-14 package footprint, open-drain output compatibility with wired-OR logic and mixed-voltage level-shifting, and LinCMOS™ process stability under differential input stress.
Technical Context
The TLC339CDB implements four independent comparators using Texas Instruments' LinCMOS™ process, delivering high input impedance and low bias current without sacrificing speed. Its open-drain output stage requires external pull-up resistors and supports interfacing to TTL, CMOS, or mixed-voltage systems.
It operates across a wide supply range (3 V–16 V) with common-mode input voltage extending to VDD−1.5 V, and maintains stable input offset voltage (≤6.5 mV max over 0°C–70°C) even under sustained differential input stress - a key advantage over standard CMOS comparators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 16 V - enables direct interface with 3.3 V, 5 V, and 12 V systems without level shifters. |
| Propagation Delay (tPLH/tPHL) | 2.5 µs typ @ 5-mV overdrive - supports fast response in overvoltage/undervoltage detection and PWM timing. |
| Input Offset Voltage (VIO) | ≤6.5 mV max (0°C to 70°C) - ensures accurate threshold setting in precision monitoring applications. |
| Supply Current (IDD) | 100 µA max (0°C to 70°C) - enables ultra-low-power operation in always-on supervisory circuits. |
| Input Impedance | 10¹² Ω typ - minimizes loading on high-impedance sensor sources like thermistors or photodiodes. |
| Output Type | Open-drain CMOS - allows wired-OR configuration, flexible pull-up voltage selection, and compatibility with 1.8 V–15 V logic families. |
| Common-Mode Input Range | 0 V to VDD−1.5 V - supports rail-to-rail sensing down to ground reference in single-supply designs. |
Pinout & Package
Package: SSOP-14 (DB), 14-pin shrink small-outline package with 0.65 mm lead pitch and RoHS-compliant CU NIPDAU finish. Moisture sensitivity level: Level-2-260°C-1YEAR / Level-1-220°C-UNLIM.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Open-drain output of comparator 1 - requires external pull-up; sinks current when asserted low. |
| 2 | IN1− | Inverting input of comparator 1 - accepts signals within common-mode range (0 V to VDD−1.5 V). |
| 3 | IN1+ | Non-inverting input of comparator 1 - used for threshold reference or signal comparison. |
| 4 | IN2+ | Non-inverting input of comparator 2 - supports independent dual-threshold configurations. |
| 5 | IN2− | Inverting input of comparator 2 - pairs with IN2+ for second independent comparison. |
| 6 | VDD | Positive supply rail - powers all four comparators; decoupling capacitor (0.1 µF) required near pin. |
| 7 | GND | Ground reference - shared return path for all comparators and outputs. |
| 8 | IN3− | Inverting input of comparator 3 - enables triple-threshold or multi-zone monitoring schemes. |
| 9 | IN3+ | Non-inverting input of comparator 3 - configurable as reference or signal input. |
| 10 | IN4+ | Non-inverting input of comparator 4 - supports fourth independent decision channel. |
| 11 | IN4− | Inverting input of comparator 4 - completes full quad-comparator functionality. |
| 12 | OUT4 | Open-drain output of comparator 4 - electrically isolated from other outputs for independent load control. |
| 13 | OUT3 | Open-drain output of comparator 3 - usable for cascaded logic or status flag generation. |
| 14 | OUT2 | Open-drain output of comparator 2 - supports parallel wired-OR or discrete load switching. |
Key Features
| Feature | Design Value |
|---|---|
| LinCMOS™ Process Technology | Delivers 10¹² Ω input impedance and sub-nA bias current while maintaining <2.5 µs response - critical for high-impedance sensor front-ends. |
| Single-Supply Operation (3 V–16 V) | Eliminates need for dual supplies in industrial and automotive subsystems - simplifies power architecture and reduces BOM count. |
| Open-Drain Outputs with 20 mA Sink Capability | Enables direct connection to LEDs, relays, or microcontroller interrupt pins without additional drivers - supports active-low signaling and bus arbitration. |
| ESD Protection (2000 V HBM) | Meets MIL-STD-883C Method 3015.2 - improves robustness during board assembly and field handling without external protection diodes. |
| Stable Input Offset Voltage (≤6.5 mV) | Guaranteed over full commercial temperature range - ensures consistent trip-point accuracy in thermal or supply-voltage varying environments. |
Applications
| Overvoltage/Undervoltage Detection | Motor Speed Control Interface |
|---|---|
Use Scenario: Monitoring 5 V and 12 V rails in embedded power supplies to trigger reset or shutdown before damage occurs. IC Role / Device Role / Timing Role: Quad comparator acts as independent voltage window detector - each pair compares against upper/lower thresholds. Use Value: Enables precise, low-power supervision with no external op-amps or ADCs - reduces system complexity and cost. | Use Scenario: Converting analog potentiometer position into PWM duty cycle for DC motor speed regulation. IC Role / Device Role / Timing Role: Comparator generates variable-frequency oscillator waveform by comparing ramp vs. reference voltage. Use Value: Provides simple, deterministic analog PWM generation without microcontroller firmware overhead. |
| Two-Phase Clock Generation | Enhanced Supply Supervisor |
Use Scenario: Generating non-overlapping clock signals for half-bridge gate drivers in motor inverters or power converters. IC Role / Device Role / Timing Role: Four comparators implement phase-shifted oscillators with dead-time control via RC networks. Use Value: Eliminates need for dedicated clock ICs - achieves precise timing alignment and adjustable dead time with passive components. | Use Scenario: Providing early power-fail warning and controlled reset assertion for microprocessors during brownout conditions. IC Role / Device Role / Timing Role: Comparator monitors unregulated supply and asserts interrupt before main regulator dropout. Use Value: Prevents data corruption by enabling graceful software shutdown - improves system reliability without external supervisor IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Bipolar process; higher supply current (500 µA typ); slower response (1.3 µs min but with higher overdrive dependency). | Lacks LinCMOS™ input impedance stability - less suitable for high-Z sensor inputs or low-power always-on monitoring. | Select LM339DR only if legacy bipolar compatibility or cost sensitivity outweighs power and precision requirements. |
| TLC3704CDR | Push-pull (not open-drain) outputs; identical LinCMOS™ performance; same pinout except output structure. | Cannot perform wired-OR logic or level-shifting - requires separate pull-ups for multi-output logic functions. | Choose TLC3704CDR when active-high outputs or simplified drive to CMOS loads are preferred over bus-sharing capability. |
Compared with LM339DR and TLC3704CDR, the TLC339CDB uniquely balances ultra-low quiescent current (100 µA max), high input impedance (10¹² Ω), and open-drain flexibility - making it optimal for battery-constrained, multi-threshold, or mixed-voltage supervisory designs where precision and power efficiency are co-critical.
Availability
TLC339CDB is available at Aetrix Electronics and suitable for overvoltage detection, motor control interfaces, two-phase clock generation, and enhanced supply supervision requiring stable component supply across industrial and embedded production cycles.
Supply support for TLC339CDB 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 for industrial, automotive, and communications markets.
The TLC339CDB belongs to TI's LinCMOS™ comparator family, engineered for precision, low-power, single-supply operation in sensor signal conditioning, power monitoring, and real-time decision-making circuits.
FAQ
What is the maximum operating temperature range for the TLC339CDB?
The TLC339CDB is characterized for the commercial temperature range of 0°C to 70°C. This specification is explicitly defined in the "Recommended Operating Conditions" section of the SLCS119A datasheet. Operation outside this range may result in parametric degradation or functional failure, and TI does not guarantee performance beyond these limits. The TLC339CDB is not rated for industrial (−40°C to 85°C) or extended temperature grades.
Does the TLC339CDB support rail-to-rail input operation?
No, the TLC339CDB does not support true rail-to-rail input. Its common-mode input voltage range is specified as 0 V to VDD−1.5 V at 25°C, and 0 V to VDD−1.5 V over the full 0°C to 70°C range. Inputs exceeding VDD−1.5 V may cause incorrect output states or increased input bias current. For example, with VDD = 5 V, valid input voltages must stay below 3.5 V to ensure reliable operation.
Can the TLC339CDB outputs drive an LED directly?
Yes, each TLC339CDB output can sink up to 20 mA, which is sufficient to drive standard indicator LEDs with appropriate series current-limiting resistors. Since outputs are open-drain, the LED must be connected between VDD (or another logic-high supply) and the output pin, with the resistor placed in series. Do not exceed 20 mA per output or 60 mA total sink current across all four outputs to avoid violating absolute maximum ratings.
Is the TLC339CDB pin-compatible with the LM339?
No, the TLC339CDB is not pin-compatible with the LM339. While both are quad comparators in 14-pin packages, the TLC339CDB uses the SSOP-14 (DB) package with different pin spacing and layout than the PDIP-14 or SOIC-14 packages used for LM339 variants. Even within SOIC-14, the TLC339CD shares the same pinout as LM339, but the TLC339CDB (SSOP) has distinct mechanical dimensions and lead form - requiring PCB redesign for substitution.
What is the typical input offset voltage drift over time for the TLC339CDB?
The TLC339CDB exhibits input offset voltage drift of typically 0.23 µV/month, including the first 30 days, under worst-case input conditions. This value is derived from the "Input Offset Voltage Change at Worst Case Input" specification in the SLCS119A datasheet and reflects long-term stability due to LinCMOS™ process characteristics - significantly lower than bipolar comparators and beneficial for applications requiring months-long calibration stability.
TLC339CDB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- -
- Series:
- LinCMOS™
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Number of Elements:
- -
- Output Type:
- -
- Voltage - Supply, Single/Dual (±):
- -
- :
- -
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- -
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- :
- -
TLC339CDB FAQ
1.How can I place an order for TLC339CDB through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC339CDB 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 TLC339CDB reliable?
The price and inventory of TLC339CDB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC339CDB is usually 5 days.
3.What payment methods are accepted for TLC339CDB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC339CDB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC339CDB?
TLC339CDB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC339CDB 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 TLC339CDB?
For technical support, including TLC339CDB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC339CDB requirements.
6.How does Aetrix verify that TLC339CDB is sourced from the original manufacturer or authorized distributors?
All TLC339CDB 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 TLC339CDB meets industry standards.
7.What is the process for return or replacement of TLC339CDB?
All TLC339CDB units undergo pre-shipment inspection (PSI). If there is an issue with TLC339CDB, 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 TLC339CDB part is unused and in its original packaging.
Return procedure for TLC339CDB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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