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STMicroelectronics TSX393IDT
- Part No.:
- TSX393IDT
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TSX393IDT.pdf
- Description:
- IC COMPARATOR 2 CMOS 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,712
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Product details
Overview
TSX393IDT from STMicroelectronics is a micropower CMOS dual voltage comparator with open-drain outputs, 5 µA typical supply current per comparator, 1 pA typical input bias current, and operation from 2.7 V to 16 V single supply. It features rail-to-rail input common-mode range including ground and is qualified for automotive applications (-40 °C to +125 °C) in SO8 package.
For engineers reviewing the TSX393IDT datasheet, TSX393IDT pinout, TSX393IDT application, or TSX393IDT equivalent, this device is selected for low-power sensing, battery monitoring, and precision threshold detection where ultra-low input current and wide supply range are critical.
Technical Context
The TSX393IDT integrates two independent high-impedance comparators with ESD-protected inputs (4 kV HBM), internal clamping diodes enabling input voltages up to 16 V regardless of VCC, and phase-reversal prevention circuitry. Its CMOS input stage delivers 10¹² Ω typical input impedance and supports common-mode input down to ground.
It operates across full automotive temperature range (-40 °C to +125 °C) with guaranteed performance at 3 V, 5 V, and 16 V supplies. Input offset voltage is ±5 mV max at 25 °C and ±6 mV over temperature; response time is 2.0–2.8 µs (tPHL) and 2.3–2.5 µs (tPLH) at 5 mV overdrive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 16 V single supply - enables direct interface with Li-ion batteries, 12 V automotive rails, and industrial 3.3/5 V systems without level-shifting. |
| Supply Current per Comparator | 5 µA typ. at 3 V - supports multi-year operation in battery-powered sensors and always-on wake-up circuits. |
| Input Bias Current | 1 pA typ. - minimizes loading on high-impedance sources (e.g., photodiodes, RC timing networks, pH electrodes). |
| Input Common-Mode Range | 0 V to (VCC − 1.5 V) - includes ground reference, allowing direct comparison of signals referenced to system GND. |
| Response Time (5 mV overdrive) | 2.0–2.8 µs (tPHL), 2.3–2.5 µs (tPLH) - sufficient for fast fault detection in motor control feedback and power-supply OVP/UVP. |
| ESD Tolerance | 4 kV HBM - meets automotive robustness requirements and reduces need for external protection in harsh environments. |
| Output Type | Open-drain - allows wired-OR logic, level translation, and flexible pull-up configuration (e.g., to higher voltage rail). |
Pinout & Package
TSX393IDT is supplied in SO8 package (ECOPACK®, automotive grade), with 1.27 mm pitch, 4.9 mm × 6.0 mm body size, and thermal resistance RthJA = 125 °C/W.
| 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 input down to −0.3 V; protected by ESD diode to VCC. |
| 3: IN1+ | Comparator 1 non-inverting input | High-impedance CMOS node - supports common-mode range from 0 V to VCC − 1.5 V. |
| 4: VCC− | Negative supply / ground | Reference terminal for both comparators - must be connected to system GND or negative rail. |
| 5: VCC+ | Positive supply | Single-supply rail (2.7–16 V); powers both comparators and internal ESD clamp network. |
| 6: OUT2 | Comparator 2 output | Open-drain NMOS drain - independent of OUT1; supports shared or separate pull-ups. |
| 7: IN2− | Comparator 2 inverting input | Electrically identical to IN1−; no crosstalk due to isolated input stages. |
| 8: IN2+ | Comparator 2 non-inverting input | Electrically identical to IN1+; enables dual-threshold or window-comparator configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 5 µA per comparator at 3 V - extends battery life in portable and remote IoT nodes. |
| Ground-sensing input stage | Common-mode range includes 0 V - eliminates need for level-shifting when comparing against GND-referenced thresholds. |
| Overvoltage-tolerant inputs | Accepts −0.3 V to 16 V regardless of VCC - simplifies interfacing with legacy analog sensors and industrial transducers. |
| Automotive qualification | AEC-Q100 Grade 1 (−40 °C to +125 °C) - certified for engine control, body electronics, and ADAS subsystems. |
| Phase-reversal immunity | Guaranteed stable output during input overdrive or common-mode excursions - prevents false triggering in noisy environments. |
Applications
| Battery Voltage Monitor | Motor Overcurrent Protection |
|---|---|
|
Use Scenario: Monitoring Li-ion cell voltage during charging/discharging to trigger cutoff at 4.2 V (overvoltage) and 2.8 V (undervoltage). IC Role / Device Role / Timing Role: Dual comparator configured as window detector - IN1+ and IN2+ set upper/lower thresholds; OUT1/OUT2 drive enable/disable logic. Use Value: 1 pA input bias avoids loading the resistive divider, preserving accuracy; 5 µA total supply current enables continuous monitoring without draining standby battery. |
Use Scenario: Detecting excessive current in BLDC motor phase legs using shunt resistor voltage drop. IC Role / Device Role / Timing Role: High-speed comparator comparing shunt voltage against fixed reference - triggers gate driver shutdown within microseconds. Use Value: 2.0 µs tPHL response ensures fault reaction before IGBT damage occurs; open-drain output interfaces directly with 3.3 V logic-level gate drivers. |
| Industrial Temperature Threshold Alarm | Smoke Detector Analog Signal Comparator |
|
Use Scenario: Comparing output of RTD or thermistor-based sensor against fixed trip points for HVAC or process control. IC Role / Device Role / Timing Role: Precision comparator rejecting common-mode noise on long sensor cables - IN1−/IN1+ used differentially or single-ended. Use Value: 58–90 dB CMRR suppresses 50/60 Hz pickup; rail-to-ground input allows direct connection to grounded sensor elements. |
Use Scenario: Converting ionization chamber current (pA–nA range) into digital alarm signal in photoelectric smoke detectors. IC Role / Device Role / Timing Role: Ultra-high-impedance comparator amplifying weak chamber current via transimpedance stage - IN1+ receives amplified signal, IN1− grounded. Use Value: 1 pA input bias prevents signal loss in high-gain front-end; 4 kV HBM withstands ESD events during field installation and maintenance. |
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 supply current (9 µA typ.), lower ESD rating (2 kV HBM), same SO8 footprint and pinout. | Lacks AEC-Q100 qualification; not rated for automotive temperature range. | Select only for cost-sensitive industrial designs where extended temperature and ESD robustness are not required. |
| TSX3702IST | Push-pull output (not open-drain), 10 µA supply current, same 1 pA input bias and 2.7–16 V supply range. | Eliminates need for external pull-up but cannot perform wired-OR or level translation. | Choose when driving logic inputs directly or when board space prohibits pull-up resistors. |
Compared with TS393IDT and TSX3702IST, TSX393IDT uniquely combines automotive qualification, lowest supply current, highest ESD tolerance, and open-drain flexibility - making it optimal for safety-critical, battery-constrained, and electrically noisy applications.
Availability
TSX393IDT is available at Aetrix Electronics and suitable for battery management systems, motor control safety interlocks, industrial temperature alarms, and smoke detector signal conditioning requiring stable component supply across automotive and industrial lifecycles.
Supply support for TSX393IDT 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, designing and manufacturing analog, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.
The TSX393 series belongs to ST's precision analog comparators product line, engineered specifically for ultra-low-power, high-accuracy threshold detection in automotive and industrial environments where reliability under extreme conditions is mandatory.
FAQ
What is the maximum input voltage the TSX393IDT can tolerate relative to VCC?
The TSX393IDT accepts input voltages from −0.3 V to 16 V regardless of VCC level, thanks to integrated ESD clamps. When VIN exceeds VCC, leakage current flows through protection diodes-typically 0.2 nA at 25 °C and ≤250 nA at 125 °C-ensuring safe operation without external components.
Can TSX393IDT drive an LED directly from its output?
No. The TSX393IDT has an open-drain output that can sink up to 4 mA with ≤250 mV drop at VCC = 5 V, but it cannot source current. To drive an LED, connect the anode to a positive rail and the cathode to OUT1 or OUT2, then select a series resistor based on forward voltage and desired current.
Does TSX393IDT require external hysteresis for noise immunity?
Not inherently-the device does not include internal hysteresis. For noisy environments, external positive feedback (e.g., resistor from OUT to IN+) must be added to create 1–10 mV of hysteresis. This is standard practice for comparators used in threshold detection and avoids false triggering from EMI or signal ripple.
Is the TSX393IDT pin-compatible with TS393IDT in SO8 package?
Yes. TSX393IDT is fully pin-to-pin and functionally compatible with TS393IDT in SO8, sharing identical pinout, electrical behavior, and PCB footprint. Key improvements-including lower supply current, better input offset voltage, and enhanced ESD rating-require no layout changes for drop-in replacement in existing designs.
TSX393IDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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):
- 13µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
TSX393IDT FAQ
1.How can I place an order for TSX393IDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSX393IDT 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 TSX393IDT reliable?
The price and inventory of TSX393IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSX393IDT is usually 5 days.
3.What payment methods are accepted for TSX393IDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSX393IDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSX393IDT?
TSX393IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSX393IDT 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 TSX393IDT?
For technical support, including TSX393IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSX393IDT requirements.
6.How does Aetrix verify that TSX393IDT is sourced from the original manufacturer or authorized distributors?
All TSX393IDT 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 TSX393IDT meets industry standards.
7.What is the process for return or replacement of TSX393IDT?
All TSX393IDT units undergo pre-shipment inspection (PSI). If there is an issue with TSX393IDT, 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 TSX393IDT part is unused and in its original packaging.
Return procedure for TSX393IDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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