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Texas Instruments TLC393QDRG4
- Part No.:
- TLC393QDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC393QDRG4.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,503
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Product details
Overview
TLC393QDRG4 from Texas Instruments is a dual micropower voltage comparator with open-drain CMOS outputs, designed for automotive-grade operation across −40°C to 125°C. It delivers 110 µW typical supply power at 5 V, 2.5 µs typical propagation delay (tPLH) with 5-mV overdrive, and operates from 4 V to 16 V single supply - enabling use in battery-powered engine control units and low-power sensor monitoring circuits.
For engineers reviewing the TLC393QDRG4 datasheet, TLC393QDRG4 pinout, TLC393QDRG4 application, or TLC393QDRG4 equivalent, key selection criteria include its automotive temperature rating, ultra-low quiescent current (≤90 µA over full range), open-drain output compatibility with mixed-voltage logic, and input offset voltage ≤10 mV across −40°C to 125°C.
Technical Context
The TLC393QDRG4 implements two independent comparators using Texas Instruments' LinCMOS™ process, delivering high input impedance (>1012 Ω), sub-nA input bias current (≤30 nA at 125°C), and stable input offset voltage under differential stress. Its open-drain output stage requires an external pull-up resistor and supports interfacing to TTL, CMOS, or higher-voltage loads up to 16 V.
Designed specifically for automotive applications, the device meets extended thermal requirements (−40°C to 125°C), features on-chip ESD protection rated to 2000 V (MIL-STD-883C, Method 3015.2), and maintains functional integrity with common-mode input range from 0 V to VDD − 1.5 V across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage range | 4 V to 16 V - supports direct connection to 5 V, 12 V automotive rails without regulation |
| Quiescent supply current | ≤90 µA over −40°C to 125°C - enables always-on monitoring in low-power vehicle subsystems |
| Propagation delay (tPLH) | 2.5 µs typ at 5 V, 5-mV overdrive - sufficient for motor control feedback and supply supervision timing |
| Input offset voltage | ≤10 mV over −40°C to 125°C - ensures reliable threshold detection in noisy automotive environments |
| Common-mode input range | 0 V to VDD − 1.5 V - accommodates ground-referenced sensors and rail-to-rail signal conditioning |
| Output type | Open-drain CMOS - allows wired-OR logic, level translation, and flexible pull-up to 16 V |
| ESD protection | 2000 V HBM - meets automotive handling robustness requirements per MIL-STD-883C |
Pinout & Package
Package: SOIC-8 (D package), surface-mount, 150 mil width, RoHS-compliant NiPdAu lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Open-drain output of comparator 1 - requires external pull-up for logic-high assertion |
| 2 | IN1− | Inverting input of comparator 1 - accepts signals within 0 V to VDD − 1.5 V |
| 3 | IN1+ | Non-inverting input of comparator 1 - used for threshold comparison against reference or sensor |
| 4 | GND | Analog/digital ground reference - must be low-impedance and decoupled near device |
| 5 | VDD | Positive supply rail - powers both comparators; bypass with 0.1 µF ceramic capacitor |
| 6 | OUT2 | Open-drain output of comparator 2 - independently configurable for dual-threshold detection |
| 7 | IN2− | Inverting input of comparator 2 - supports independent signal path for redundancy or sequencing |
| 8 | IN2+ | Non-inverting input of comparator 2 - enables dual-window or hysteresis-based monitoring |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent comparators | Enables simultaneous monitoring of two critical parameters (e.g., overvoltage + overtemperature) without cross-talk |
| LinCMOS™ process technology | Delivers <1 pA input bias current at 25°C and stable offset performance under differential input stress |
| Automotive temperature grade | Qualified from −40°C to 125°C - suitable for under-hood ECUs, body control modules, and ADAS power supervisors |
| Ultra-low power consumption | 22–40 µA typical at 25°C, ≤90 µA max over full temperature range - extends battery life in always-on systems |
| Wide supply voltage range | 4 V to 16 V operation - eliminates need for dedicated LDO in 12 V automotive systems |
Applications
| Engine Control Unit (ECU) Supply Monitoring | Electric Power Steering (EPS) Sensor Interface |
|---|---|
|
Use Scenario: Real-time monitoring of 5 V and 12 V rails in engine management systems to trigger fail-safe shutdown before voltage collapse. IC Role / Device Role / Timing Role: Dual comparator provides independent undervoltage lockout (UVLO) and overvoltage detection with fast response (2.5 µs). Use Value: Prevents ECU latch-up during cranking transients by detecting rail deviations within 5 µs, leveraging open-drain outputs for direct MCU interrupt assertion. |
Use Scenario: Conditioning analog signals from torque and position sensors in EPS modules operating in high-EMI under-hood environments. IC Role / Device Role / Timing Role: Comparator 1 detects torque threshold crossing; Comparator 2 validates sensor supply integrity before actuation. Use Value: Sub-10 mV offset stability over −40°C to 125°C ensures consistent torque-sensing accuracy across vehicle lifetime. |
| Body Control Module (BCM) Window Lift Detection | Advanced Driver Assistance Systems (ADAS) Camera Power Sequencing |
|
Use Scenario: Detecting motor stall or obstruction during power window operation via current-sense comparator output. IC Role / Device Role / Timing Role: Compares amplified shunt voltage against programmable threshold; open-drain output drives relay driver or MCU GPIO. Use Value: 110 µW typical power enables integration into always-on BCM domains without thermal penalty or battery drain. |
Use Scenario: Enabling precise power-up sequencing for multi-rail camera modules requiring 1.8 V, 3.3 V, and 5 V rails in defined order. IC Role / Device Role / Timing Role: Comparator 1 monitors 3.3 V rail; Comparator 2 monitors 5 V rail - outputs enable downstream regulators only when both are valid. Use Value: Dual-channel independence and 4–16 V supply range allow direct monitoring of unregulated inputs, reducing BOM count vs. discrete solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393QDR | Higher quiescent current (250 µA typ), wider input offset (±7 mV), no LinCMOS™ input stage - lower input impedance and higher bias current | Not qualified for full automotive temp range; limited to −40°C to 125°C only in Q1 variant, but lacks same offset stability | Acceptable for cost-sensitive non-critical automotive functions where power and precision are secondary |
| TLC3702CDR | Push-pull output (no external pull-up needed), faster tPLH (1.5 µs), but higher supply current (120 µA typ) and narrower supply range (3–16 V) | Eliminates pull-up resistors but cannot interface directly to 16 V loads; unsuitable for wired-OR bus configurations | Preferred when driving LEDs or logic directly without external components, but not for mixed-voltage or fault-tolerant designs |
Compared with LM393QDR and TLC3702CDR, the TLC393QDRG4 uniquely balances automotive qualification, ultra-low power (≤90 µA), open-drain flexibility, and LinCMOS™ precision - making it optimal for safety-critical, always-on monitoring where supply headroom and noise immunity are constrained.
Availability
TLC393QDRG4 is available at Aetrix Electronics and suitable for automotive engine control, electric power steering, and advanced driver assistance systems requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for TLC393QDRG4 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 for industrial, automotive, and consumer applications.
The TLC393QDRG4 belongs to TI's LinCMOS™ comparator family, engineered for high-precision, low-power sensing and monitoring in harsh environments - particularly targeting automotive subsystems demanding reliability across extreme temperatures.
FAQ
What is the maximum operating temperature range for the TLC393QDRG4?
The TLC393QDRG4 is specified for continuous operation from −40°C to 125°C ambient temperature, meeting AEC-Q100 stress test guidelines for automotive under-hood applications. This rating is confirmed in the "recommended operating conditions" table of the official SLCS115E datasheet, and applies to the SOIC-8 (D) package variant shipped as TLC393QDRG4.
Does the TLC393QDRG4 require external pull-up resistors on its outputs?
Yes, the TLC393QDRG4 features open-drain CMOS outputs (OUT1 and OUT2), which require external pull-up resistors to define the logic-high voltage level. The datasheet specifies that each output can sink up to 20 mA, and recommends pull-up values based on load capacitance and required rise time - typically 5.1 kΩ to VDD for standard logic interfacing.
How does the input offset voltage of the TLC393QDRG4 compare to the commercial-grade TLC393CD?
The TLC393QDRG4 has a maximum input offset voltage of 10 mV over −40°C to 125°C, while the TLC393CD is specified at 6.5 mV over 0°C to 70°C. Although the Q-grade part has a slightly higher limit, its offset remains stable across the full automotive range due to LinCMOS™ process optimization - unlike the C-grade part, whose 6.5 mV spec does not extend beyond 70°C.
Can the TLC393QDRG4 operate from a 3.3 V supply?
No - the TLC393QDRG4 has a minimum supply voltage of 4 V, as stated in its "recommended operating conditions" table. Attempting operation at 3.3 V may result in undefined output behavior or failure to meet propagation delay and offset specifications. For 3.3 V systems, consider the TLC393ID (3 V min) or alternate comparators like TLV3702.
Is the TLC393QDRG4 pin-compatible with the LM393QDR?
Yes, the TLC393QDRG4 and LM393QDR share identical SOIC-8 pinouts (OUT1, IN1−, IN1+, GND, VDD, OUT2, IN2−, IN2+), enabling drop-in replacement in existing layouts. However, design validation is required for differences in input bias current, offset voltage drift, and ESD robustness - especially in automotive applications where LinCMOS™ advantages are critical.
TLC393QDRG4 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:
- Obsolete
- 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:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
TLC393QDRG4 FAQ
1.How can I place an order for TLC393QDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC393QDRG4 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 TLC393QDRG4 reliable?
The price and inventory of TLC393QDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC393QDRG4 is usually 5 days.
3.What payment methods are accepted for TLC393QDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC393QDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC393QDRG4?
TLC393QDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC393QDRG4 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 TLC393QDRG4?
For technical support, including TLC393QDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC393QDRG4 requirements.
6.How does Aetrix verify that TLC393QDRG4 is sourced from the original manufacturer or authorized distributors?
All TLC393QDRG4 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 TLC393QDRG4 meets industry standards.
7.What is the process for return or replacement of TLC393QDRG4?
All TLC393QDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC393QDRG4, 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 TLC393QDRG4 part is unused and in its original packaging.
Return procedure for TLC393QDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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