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Texas Instruments TLC393QDRQ1
- Part No.:
- TLC393QDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC393QDRQ1.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,320
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Product details
Overview
TLC393QDRQ1 from Texas Instruments is a dual micropower voltage comparator with open-drain CMOS outputs, designed for single-supply operation from 4 V to 16 V. It delivers 2.5 µs typical propagation delay (tPLH) with 5-mV overdrive, 5 mV max input offset voltage at 25°C, and consumes only 110 µW typical at 5 V - enabling precision threshold detection in automotive power-supply supervision and motor control feedback loops.
For engineers reviewing the TLC393QDRQ1 datasheet, TLC393QDRQ1 pinout, TLC393QDRQ1 application, or TLC393QDRQ1 equivalent, this page provides verified technical context, automotive-grade thermal and ESD specifications (AEC-Q100 Grade 1, HBM H2/C4B), package-validated pin functions, and two confirmed alternative comparators for design flexibility under temperature-critical conditions.
Technical Context
The TLC393QDRQ1 integrates two independent LinCMOS™ comparators sharing a common VDD and GND, each featuring rail-to-rail input capability (VIC = 0 to VDD − 1.5 V) and open-drain output stage compatible with pull-up voltages up to 16 V. Its architecture eliminates internal phase inversion and supports direct interfacing to microcontroller interrupt inputs or logic-level translators without level-shifting circuitry.
Designed specifically for automotive environments, it operates across −40°C to +125°C ambient temperature, maintains stable input offset voltage (<10 mV over full range), and achieves >84 dB common-mode and supply-voltage rejection - critical for noise-immune sensing in engine control units and battery management systems where supply ripple and ground bounce are prevalent.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4 V to 16 V - enables direct connection to 5 V, 12 V, or unregulated automotive rails without external regulators. |
| Input Offset Voltage (VIO) | 5 mV max at 25°C - ensures accurate voltage threshold detection within ±2.5 mV of setpoint in precision window comparators. |
| Propagation Delay (tPLH) | 2.5 µs typ @ 5-mV overdrive - supports fast response in overvoltage/undervoltage fault detection with minimal latency. |
| Quiescent Supply Current | 90 µA max (both comparators, no load) - reduces system standby power in always-on vehicle modules. |
| Output Type | Open-drain CMOS - allows wired-OR configuration, flexible pull-up voltage selection (up to 16 V), and compatibility with mixed-voltage logic domains. |
| Operating Temperature | −40°C to +125°C ambient - qualified per AEC-Q100 Grade 1 for under-hood and transmission-control applications. |
| ESD Rating | HBM Class H2 (2 kV), CDM Class C4B (750 V) - meets automotive handling and assembly robustness requirements. |
Pinout & Package
Package: SOIC-8 (D package), 3.91 mm × 4.90 mm body, 1.75 mm max height, gull-wing leads, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Open-drain output of Comparator 1 - requires external pull-up; sinks up to 20 mA when low. |
| 2 | IN1− | Inverting input of Comparator 1 - accepts input down to −0.3 V (with current limiting) and up to VDD. |
| 3 | IN1+ | Non-inverting input of Comparator 1 - same voltage range as IN1−; differential input voltage limited to ±18 V. |
| 4 | GND | Analog/digital ground reference - must be low-impedance; decoupling capacitor (0.1 µF) required near pin. |
| 5 | IN2+ | Non-inverting input of Comparator 2 - electrically isolated from Comparator 1; shares same VIC range. |
| 6 | IN2− | Inverting input of Comparator 2 - supports independent reference or feedback signal routing. |
| 7 | OUT2 | Open-drain output of Comparator 2 - independently controllable; supports dual-threshold or hysteresis configurations. |
| 8 | VDD | Positive supply input - powers both comparators; absolute max 18 V; reverse polarity protection not integrated. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C operation with HBM/CDM ESD compliance - eliminates requalification effort for automotive Tier-1 designs. |
| LinCMOS™ process technology | Delivers <15 nA input bias current at 125°C and stable offset voltage under differential stress - enables high-impedance sensor interfaces without drift-induced false triggers. |
| Single-supply micropower operation | 110 µW typical at 5 V - reduces thermal load and extends battery life in always-on vehicle subsystems such as door module controllers. |
| Wide common-mode input range | 0 V to VDD − 1.5 V - permits direct monitoring of signals referenced to VDD (e.g., battery voltage dividers) without level-shifting resistors. |
| Fast propagation with low overdrive | 2.5 µs tPLH @ 5-mV overdrive - enables reliable detection of small-signal transients in motor stall or short-circuit protection circuits. |
Applications
| Engine Coolant Temperature Supervision | Battery Voltage Window Detection |
|---|---|
|
Use Scenario: Monitoring NTC thermistor voltage divider output against fixed thresholds to detect overheating or freeze conditions in engine coolant loop. IC Role / Device Role / Timing Role: Dual comparator implements high-temp and low-temp trip points; open-drain outputs drive MCU interrupt pins with pull-up to 3.3 V. Use Value: Achieves ±2°C thermal accuracy using 5 mV VIO and rail-to-rail input, eliminating need for op-amp buffering or trimming resistors. |
Use Scenario: Detecting 12 V battery undervoltage (<10.5 V) and overvoltage (>15.5 V) in start-stop systems to trigger safe shutdown or warning alerts. IC Role / Device Role / Timing Role: One comparator monitors upper threshold, the other lower; outputs feed OR gate or separate MCU GPIOs. Use Value: 4–16 V supply range allows direct connection to battery rail; 2.5 µs response ensures timely intervention before MOSFET driver latch-up. |
| Motor Stall Protection in HVAC Blower | Two-Phase Nonoverlapping Clock Generation |
|
Use Scenario: Sensing current-sense resistor voltage during blower motor startup to distinguish normal inrush from locked-rotor condition. IC Role / Device Role / Timing Role: Comparator compares sensed voltage against adjustable threshold; output disables half-H bridge via EN pin after programmable delay. Use Value: Micropower consumption (90 µA) minimizes impact on idle current budget; open-drain output interfaces directly to SN75603 enable input. |
Use Scenario: Generating complementary, nonoverlapping clock signals for synchronous rectifier control in DC-DC converters. IC Role / Device Role / Timing Role: Cross-coupled configuration with RC timing network creates precise dead-time between 1OUT and 2OUT transitions. Use Value: Stable propagation delay vs. supply voltage (Fig. 14/15) ensures consistent dead-time across 8–14 V battery variations in automotive DC-DC stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual open-drain comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393QPWRQ1 | Higher quiescent current (500 µA typ), slower tPLH (10 µs @ 5 mV), same SOIC-8 package and AEC-Q100 Grade 1 rating. | Less suitable for ultra-low-power always-on modules; acceptable for cost-sensitive non-critical supervision where speed is secondary. | Select LM393QPWRQ1 only if legacy LM393 footprint reuse is mandatory and 2.5 µs response is unnecessary. |
| TLC3702QDRQ1 | Push-pull (not open-drain) outputs, identical LinCMOS™ performance, same VIO and tPLH specs, also AEC-Q100 Grade 1. | Requires level translation for mixed-voltage systems; cannot perform wired-OR or interface to higher-voltage logic without external components. | Choose TLC3702QDRQ1 when driving LEDs, relays, or CMOS inputs directly - but avoid when open-drain flexibility or multi-load sharing is needed. |
Compared with LM393QPWRQ1 and TLC3702QDRQ1, the TLC393QDRQ1 uniquely combines micropower operation, open-drain outputs, and automotive-grade speed/stability - making it the optimal choice for battery-conscious, multi-rail, or fault-tolerant comparator applications requiring minimal BOM count and layout area.
Availability
TLC393QDRQ1 is available at Aetrix Electronics and suitable for automotive power-supply supervision, motor stall detection, and battery voltage window monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC393QDRQ1 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 automotive ICs, with decades of automotive qualification expertise and broad manufacturing scale.
The TLC393-Q1 belongs to TI's automotive-qualified LinCMOS™ comparator family, engineered specifically for high-reliability voltage monitoring in engine control, body electronics, and ADAS subsystems where precision, low power, and thermal robustness are mandatory.
FAQ
What is the maximum allowable supply voltage for the TLC393QDRQ1?
The TLC393QDRQ1 has an absolute maximum supply voltage (VDD) of 18 V, but its recommended operating range is 4 V to 16 V. Operating above 16 V risks exceeding electrical limits and may degrade long-term reliability. The device is commonly used at 5 V or 12 V in automotive applications, and the TLC393QDRQ1 datasheet specifies guaranteed performance only within the 4–16 V range under all temperature conditions.
Does the TLC393QDRQ1 support rail-to-rail input operation?
Yes, the TLC393QDRQ1 supports a common-mode input voltage range from 0 V to VDD − 1.5 V at 125°C (and 0 V to VDD − 1 V at 25°C). This allows direct interfacing with signals referenced to ground or to VDD - such as battery-sensed dividers - without external level-shifting circuitry. However, inputs must remain within −0.3 V to VDD to avoid forward-biasing ESD diodes, and differential input voltage must not exceed ±18 V.
Can the TLC393QDRQ1 outputs drive a 3.3 V logic input directly?
Yes, the TLC393QDRQ1 open-drain outputs can drive a 3.3 V logic input when pulled up to 3.3 V via an external resistor. Since the output is open-drain, it sinks current when active low and presents high impedance when inactive - allowing clean interfacing with mixed-voltage systems. The TLC393QDRQ1 output can sink up to 20 mA, so a 10 kΩ pull-up to 3.3 V yields ~0.33 mA load, well within specification and ensuring solid logic-low levels below 0.4 V.
Is the TLC393QDRQ1 pin-compatible with the standard LM393?
No, the TLC393QDRQ1 is not pin-compatible with the LM393. While both are dual comparators in SOIC-8 packages, the pin assignments differ: LM393 places OUT1 on pin 1 and OUT2 on pin 7, whereas the TLC393QDRQ1 places OUT1 on pin 1 and OUT2 on pin 7 - same numbering - but the TLC393QDRQ1 uses pin 4 for GND and pin 8 for VDD, matching LM393. However, the TLC393QDRQ1's LinCMOS™ input structure enables rail-to-rail common-mode range, unlike LM393's PNP-input limitation - requiring careful schematic review even if physical layout appears interchangeable.
What decoupling capacitance is recommended for the TLC393QDRQ1?
A 0.1 µF ceramic capacitor placed as close as possible to the TLC393QDRQ1 VDD (pin 8) and GND (pin 4) pins is explicitly recommended in the datasheet to suppress high-frequency supply noise and ensure stable comparator operation. For systems with high-current switching nearby (e.g., motor drivers), adding a bulk 10 µF tantalum or aluminum electrolytic capacitor in parallel improves low-frequency regulation. This decoupling is essential to prevent false triggering due to supply bounce, especially given the TLC393QDRQ1's high PSRR and sensitivity to transient noise.
TLC393QDRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- LinCMOS™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- MOS, Open-Drain
- Voltage - Supply, Single/Dual (±):
- 4V ~ 16V
- :
- 5mV @ 10V
- Voltage - Input Offset (Max):
- 5pA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 90µA
- Current - Quiescent (Max):
- 84dB CMRR
- CMRR, PSRR (Typ):
- 4.5µs
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- 8-SOIC
TLC393QDRQ1 FAQ
1.How can I place an order for TLC393QDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC393QDRQ1 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 TLC393QDRQ1 reliable?
The price and inventory of TLC393QDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC393QDRQ1 is usually 5 days.
3.What payment methods are accepted for TLC393QDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC393QDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC393QDRQ1?
TLC393QDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC393QDRQ1 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 TLC393QDRQ1?
For technical support, including TLC393QDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC393QDRQ1 requirements.
6.How does Aetrix verify that TLC393QDRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC393QDRQ1 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 TLC393QDRQ1 meets industry standards.
7.What is the process for return or replacement of TLC393QDRQ1?
All TLC393QDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC393QDRQ1, 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 TLC393QDRQ1 part is unused and in its original packaging.
Return procedure for TLC393QDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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