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STMicroelectronics TSX393IQ2T
- Part No.:
- TSX393IQ2T
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
TSX393IQ2T.pdf
- Description:
- IC COMPARATOR 2 CMOS 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,671
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Product details
Overview
TSX393IQ2T from STMicroelectronics is a micropower dual CMOS voltage comparator with open-drain outputs, designed for automotive and industrial applications requiring ultra-low supply current (5 µA typ. per comparator), rail-to-rail input common-mode range including ground, and high ESD tolerance (4 kV HBM). It operates from 2.7 V to 16 V single supply or ±1.35 V to ±8 V dual supplies, and features 1 pA typical input bias current and 2 µs typical response time at 5 mV overdrive.
For engineers reviewing the TSX393IQ2T datasheet, TSX393IQ2T pinout, TSX393IQ2T application, or TSX393IQ2T equivalent, this page delivers verified electrical specifications, DFN8 2×2 mm package details, automotive-grade temperature range (−40 °C to +125 °C), and validated alternatives for low-power sensing and threshold-detection circuits.
Technical Context
The TSX393IQ2T integrates two independent high-impedance comparators with CMOS input stages, enabling operation across wide supply voltages while maintaining sub-picoampere input bias current and input common-mode range extending to ground. Its open-drain outputs support wired-OR configurations and level-shifting interfaces.
Designed as an enhanced replacement for the TS393, it improves input offset voltage (±5 mV max), ESD robustness (4 kV HBM), and supply current efficiency-especially critical in battery-powered automotive subsystems and precision industrial monitoring where leakage and quiescent power dominate system budget.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 16 V single supply - supports direct connection to 3.3 V, 5 V, and 12 V rails without regulation. |
| Input Bias Current | 1 pA typ. - enables high-impedance sensor interfacing (e.g., thermistors, photodiodes) without signal loading. |
| Response Time | 2.0 µs typ. (tPHL) at 5 mV overdrive - suitable for fast threshold detection in motor control feedback or fault monitoring. |
| Input Offset Voltage | ±5 mV max at 25 °C - ensures accurate voltage window detection in battery monitoring and power sequencing. |
| ESD Tolerance | 4 kV HBM - meets automotive board-level ESD requirements per ISO 10605 without external protection. |
| Operating Temperature | −40 °C to +125 °C - qualified per AEC-Q100 for under-hood and engine-control module deployment. |
| Output Type | Open-drain - allows flexible pull-up selection, multi-comparator wired-OR logic, and interface to mixed-voltage systems. |
Pinout & Package
TSX393IQ2T is housed in a DFN8 2×2 mm plastic micropackage with exposed pad (no thermal pad connection required), optimized for space-constrained automotive modules and portable industrial sensors. Pin 1 is marked by a dot or notch on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Comparator 1 output | Open-drain NMOS drain - requires external pull-up; sinks up to 4 mA at <250 mV drop (VCC = 5 V). |
| 2 (IN1−) | Comparator 1 inverting input | High-impedance CMOS node - accepts signals down to ground; supports rail-to-rail common-mode range. |
| 3 (IN1+) | Comparator 1 non-inverting input | Identical impedance and voltage range as IN1−; differential input voltage tolerance ±18 V. |
| 4 (VCC−) | Negative supply / ground reference | Connect to system ground (0 V) in single-supply mode; supports true dual-supply operation. |
| 5 (VCC+) | Positive supply | Accepts 2.7–16 V; internal ESD clamps allow inputs to swing −0.3 V to 16 V regardless of VCC+. |
| 6 (OUT2) | Comparator 2 output | Independent open-drain output - electrically isolated from OUT1; enables dual-threshold logic. |
| 7 (IN2−) | Comparator 2 inverting input | Matched performance to IN1−; no crosstalk between channels per datasheet characterization. |
| 8 (IN2+) | Comparator 2 non-inverting input | Same input structure and biasing as IN1+; supports independent reference or sensor inputs. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 5 µA per comparator typical supply current - extends battery life in always-on vehicle telematics and remote sensors. |
| Rail-to-rail input capability | Common-mode range includes ground and extends to (VCC+ − 1.5 V) - eliminates need for level-shifting in low-side current sensing. |
| Automotive qualification | AEC-Q100 Grade 1 qualified (−40 °C to +125 °C) - certified for use in engine control units and ADAS power domains. |
| Enhanced ESD robustness | 4 kV HBM - reduces field failure risk in assembly and end-use environments without added protection components. |
| Pin-compatible upgrade | Direct replacement for TS393 in SO8, TSSOP8, MiniSO8, and DFN8 packages - enables drop-in power optimization. |
Applications
| Battery Voltage Monitoring | Motor Overcurrent Protection |
|---|---|
|
Use Scenario: Real-time monitoring of 12 V lead-acid or 48 V Li-ion battery packs in automotive start-stop systems and EV auxiliary power units. IC Role / Device Role / Timing Role: Dual comparator performs undervoltage lockout (UVLO) and overvoltage detection using resistor-divider references. Use Value: 5 µA quiescent current prevents parasitic drain during vehicle sleep mode; open-drain outputs interface directly to microcontroller GPIOs with configurable pull-ups. |
Use Scenario: Detection of excessive winding current in brushed DC motors used in power seats, sunroofs, and HVAC actuators. IC Role / Device Role / Timing Role: Compares amplified shunt voltage against programmable thresholds to trigger immediate shutdown via MCU interrupt. Use Value: 2 µs response time ensures fault reaction within one PWM cycle; rail-to-rail inputs accommodate low-side shunt placement without level shifters. |
| Industrial Temperature Sensing | Smoke Detector Threshold Logic |
|
Use Scenario: Precision threshold comparison for NTC thermistor networks in PLC I/O modules and motor drive thermal management. IC Role / Device Role / Timing Role: Converts analog temperature signal into digital alert states (e.g., warning/critical) using dual hysteresis windows. Use Value: 1 pA input bias current avoids self-heating errors in high-resistance thermistor strings; −40 °C to +125 °C rating covers full industrial ambient range. |
Use Scenario: Dual-stage smoke concentration detection in photoelectric smoke alarms compliant with UL 217 and EN 14604. IC Role / Device Role / Timing Role: First comparator triggers pre-alarm at moderate particle density; second activates full alarm above critical threshold. Use Value: Low ICC enables 10-year battery life in standalone units; 4 kV HBM withstands ESD events during manufacturing and field installation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS393IDT | Higher ICC (10 µA typ.), wider Vio (±15 mV), lower ESD (2 kV HBM), SO8 only | Lacks AEC-Q100 qualification; not rated for automotive under-hood use | Select when cost sensitivity outweighs power/ESD requirements and automotive qualification is unnecessary. |
| TSX3702IST | Push-pull output (not open-drain), same ICC/Vio, MiniSO8 only, no DFN8 option | Eliminates external pull-up resistors but lacks wired-OR capability and level-shifting flexibility | Choose when driving LEDs or logic inputs directly without external components, and board space permits MiniSO8 footprint. |
Compared with TS393IDT and TSX3702IST, TSX393IQ2T uniquely combines DFN8 miniaturization, AEC-Q100 compliance, open-drain versatility, and lowest ICC-making it optimal for next-generation automotive body controllers and compact industrial safety modules.
Availability
TSX393IQ2T is available at Aetrix Electronics and suitable for automotive battery management, industrial motor protection, temperature sensing, and smoke detector design requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TSX393IQ2T 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power discrete technologies with vertical manufacturing and broad IP portfolio.
The TSX393 series belongs to ST's precision analog comparators product line, engineered specifically for ultra-low-power, high-reliability sensing in harsh-environment automotive and industrial control systems.
FAQ
What is the maximum input voltage allowed relative to VCC+?
The TSX393IQ2T allows input voltages from −0.3 V to 16 V regardless of VCC+ level, enabled by internal ESD clamp diodes. At VIN > VCC+, leakage remains below 250 nA at 125 °C, ensuring safe overvoltage tolerance without external protection circuitry.
Can TSX393IQ2T drive an LED directly?
No-its open-drain output requires an external pull-up resistor to VCC or another rail. To drive an LED, connect the anode to a positive supply and the cathode to OUT1 or OUT2; the comparator will sink current when active. Maximum sink current is 4 mA with <250 mV drop at VCC = 5 V.
Is the DFN8 2×2 package thermally enhanced?
The TSX393IQ2T DFN8 2×2 mm package has no exposed thermal pad; its Rthja is specified at 115 °C/W. For thermal-limited applications, derate power dissipation using junction-to-ambient data and ensure PCB copper area matches the recommended footprint (2.80 × 1.80 mm pad layout per Figure 20).
Does TSX393IQ2T support dual-supply operation with asymmetric rails?
Yes-it operates with dual supplies ranging from ±1.35 V to ±8 V. The absolute maximum ratings specify VCC+ − VCC− ≤ 18 V, and input common-mode range is referenced to VCC−, allowing asymmetric configurations such as +5 V / −3 V if total differential supply stays within limits.
TSX393IQ2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 8-UFDFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- CMOS
- Number of Elements:
- 2
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 16V, ±1.35V ~ 8V
- :
- 5mV
- Voltage - Input Offset (Max):
- 10pA
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 8µA
- Current - Quiescent (Max):
- 85dB CMRR
- CMRR, PSRR (Typ):
- 2.5µs
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-DFN (2x2)
TSX393IQ2T FAQ
1.How can I place an order for TSX393IQ2T through Aetrix?
Please submit a Request for Quotation (RFQ) for TSX393IQ2T 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 TSX393IQ2T reliable?
The price and inventory of TSX393IQ2T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSX393IQ2T is usually 5 days.
3.What payment methods are accepted for TSX393IQ2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSX393IQ2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSX393IQ2T?
TSX393IQ2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSX393IQ2T 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 TSX393IQ2T?
For technical support, including TSX393IQ2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSX393IQ2T requirements.
6.How does Aetrix verify that TSX393IQ2T is sourced from the original manufacturer or authorized distributors?
All TSX393IQ2T 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 TSX393IQ2T meets industry standards.
7.What is the process for return or replacement of TSX393IQ2T?
All TSX393IQ2T units undergo pre-shipment inspection (PSI). If there is an issue with TSX393IQ2T, 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 TSX393IQ2T part is unused and in its original packaging.
Return procedure for TSX393IQ2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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