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STMicroelectronics TSX393IYDT
- Part No.:
- TSX393IYDT
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TSX393IYDT.pdf
- Description:
- IC COMPARATOR 2 CMOS 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:522
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Product details
Overview
TSX393IYDT from STMicroelectronics is an automotive-grade micropower dual CMOS 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 per AEC-Q100 Grade 1 (−40 °C to +125 °C) in SO8 package for engine control and battery monitoring systems.
For engineers reviewing the TSX393IYDT datasheet, TSX393IYDT pinout, TSX393IYDT application, or TSX393IYDT equivalent, this device is selected for ultra-low-power sensing, high-impedance signal conditioning, and automotive voltage threshold detection where ESD robustness (4 kV HBM), fast 2 µs response at 5 mV overdrive, and input tolerance beyond supply rails are critical.
Technical Context
The TSX393IYDT integrates two independent comparators with ESD-clamped CMOS inputs, enabling stable operation even when input voltages exceed VCC+ (up to 16 V) or fall below ground (−0.3 V). Its input stage uses high-impedance p-channel MOSFETs to achieve 10¹² Ω typical input impedance and 1 pA bias current.
Each comparator delivers open-drain output capable of sinking 4 mA while maintaining VOL ≤ 150 mV at VCC = 16 V, with propagation delays tightly specified across −40 °C to +125 °C and supply voltages from 2.7 V to 16 V - supporting reliable window detection and power-supply sequencing in harsh automotive environments.
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 automotive rails without level shifting. |
| Supply Current per Comparator | 5 µA typ. at 25 °C - enables multi-year battery life in always-on vehicle subsystems like intrusion detection or low-power wake-up circuits. |
| Input Bias Current | 1 pA typ. - preserves signal integrity in high-impedance sensor interfaces (e.g., thermistors, photodiodes) without loading. |
| Input Common-Mode Range | 0 V to (VCC+ − 1.5 V) - includes ground and allows direct sensing of signals referenced to system ground or negative rails. |
| Response Time (5 mV overdrive) | 2.0–2.5 µs - ensures accurate timing for fast fault detection in motor phase monitoring or overvoltage latch circuits. |
| ESD Tolerance | 4 kV HBM - meets automotive board-level ESD requirements without external protection diodes. |
| Output Type | Open-drain - permits wired-OR logic, level translation, and flexible pull-up configuration (e.g., to higher voltage rail). |
Pinout & Package
TSX393IYDT is supplied in SO8 package (automotive-grade, ECOPACK® compliant), with 1.27 mm pitch, 5.0 mm × 4.0 mm body, and exposed pad not present. Pin functions are validated per DS10633 Rev 5 Figure 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Out1) | Comparator 1 output | Open-drain NMOS drain - requires external pull-up; sinks up to 4 mA with VOL ≤ 150 mV at VCC = 16 V. |
| 2 (In1−) | Comparator 1 inverting input | High-impedance CMOS gate - accepts input voltages from −0.3 V to 16 V regardless of VCC, with leakage < 0.2 nA at 25 °C. |
| 3 (In1+) | Comparator 1 non-inverting input | Identical electrical behavior to In1−; differential input voltage range ±18 V supports wide-swing signal comparison. |
| 4 (VCC−) | Negative supply / ground reference | System ground terminal - common return for both comparators and internal ESD clamps; must be connected. |
| 5 (VCC+) | Positive supply | Primary power rail - supplies both comparators; supports 2.7–16 V with thermal derating above 85 °C. |
| 6 (Out2) | Comparator 2 output | Independent open-drain output - electrically isolated from Out1; enables dual-threshold or redundant monitoring. |
| 7 (In2−) | Comparator 2 inverting input | Matches In1− specs; allows simultaneous comparison of two independent analog signals (e.g., battery voltage vs. reference and temperature vs. threshold). |
| 8 (In2+) | Comparator 2 non-inverting input | Same input structure as In1+; supports differential or single-ended configurations with rail-to-rail common-mode range. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 5 µA/comparator supply current enables >10-year operation on coin-cell batteries in telematics wake-up monitors. |
| Rail-to-rail input with ground inclusion | Common-mode range from 0 V to VCC+−1.5 V allows direct interface to sensors grounded at chassis potential in EV battery packs. |
| Input overvoltage tolerance | Inputs withstand −0.3 V to 16 V independent of VCC - eliminates need for external clamping in 12 V automotive front-end designs. |
| Automotive qualification | AEC-Q100 Grade 1 (−40 °C to +125 °C) and advanced screening per AEC-Q001/Q002 - certified for engine bay and powertrain applications. |
| Fast propagation with low overdrive | 2.0 µs tPHL at 5 mV overdrive - detects subtle voltage deviations in real-time battery cell balancing or DC-DC converter feedback loops. |
Applications
| Engine Coolant Temperature Monitoring | Battery State-of-Charge Threshold Detection |
|---|---|
|
Use Scenario: Detecting coolant temperature crossing 95 °C and 105 °C thresholds to trigger fan activation and dashboard warnings. IC Role / Device Role / Timing Role: Dual comparator configured as a window detector - In1+ and In2+ tied to precision references, In1−/In2− fed by NTC thermistor divider. Use Value: 1 pA input bias prevents thermistor measurement error; 5 µA quiescent current avoids parasitic drain during key-off; AEC-Q100 qualification ensures reliability at 125 °C ambient. |
Use Scenario: Triggering charge termination when Li-ion battery pack voltage exceeds 4.25 V/cell and enabling low-voltage disconnect at 2.8 V/cell. IC Role / Device Role / Timing Role: Dual comparator compares scaled pack voltage against two independent reference voltages - one for overvoltage, one for undervoltage. Use Value: Input tolerance beyond VCC allows direct sensing of 48 V pack via resistive divider without level-shifting ICs; open-drain outputs interface directly with MCU GPIOs or latch circuits. |
| Brake Light Activation Circuit | EV Onboard Charger Input Voltage Validation |
|
Use Scenario: Activating brake lights when pedal switch closes and vehicle speed drops below 5 km/h, using analog speed signal from ABS wheel sensor. IC Role / Device Role / Timing Role: Comparator 1 detects speed signal crossing zero (brake applied); Comparator 2 validates speed < 5 km/h via calibrated threshold. Use Value: 2.5 µs response time ensures sub-10 ms brake light latency; ESD robustness protects against transients induced by solenoid actuation in braking modules. |
Use Scenario: Validating AC-DC rectified input voltage remains within 300–450 V range before enabling charger power stage to prevent inverter damage. IC Role / Device Role / Timing Role: Dual comparator monitors high-voltage DC bus via isolated resistive divider - one for under-voltage lockout, one for overvoltage shutdown. Use Value: 16 V absolute max input rating allows safe operation with 1000:1 divider (450 V → 0.45 V); low ICC minimizes self-heating in sealed charger enclosures. |
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/comparator), lower ESD rating (2 kV HBM), no AEC-Q100 qualification | Restricted to industrial or consumer use; unsuitable for under-hood automotive deployment | Select only for cost-sensitive non-automotive designs where 4× higher current and reduced ESD margin are acceptable. |
| TSX3702IST | Push-pull output (not open-drain), identical supply current and input specs, same AEC-Q100 Grade 1 rating | Eliminates need for external pull-up but lacks wired-OR capability; incompatible with shared-bus fault signaling | Choose when driving LEDs or MCU inputs directly without external components, and when OR'ing multiple comparators is unnecessary. |
Compared with TS393IDT, TSX393IYDT delivers 45% lower supply current and automotive qualification; versus TSX3702IST, it trades push-pull simplicity for open-drain flexibility in fault-tolerant architectures requiring bus arbitration or level translation.
Availability
TSX393IYDT is available at Aetrix Electronics and suitable for engine control units, battery management systems, and EV onboard chargers requiring stable component supply with full AEC-Q100 traceability and long-term automotive lifecycle support.
Supply support for TSX393IYDT 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 silicon solutions for automotive, industrial, and power applications with emphasis on functional safety and energy efficiency.
The TSX393 product line targets automotive and industrial sensing systems requiring ultra-low-power, high-precision analog comparators with extended temperature range and robust EMC performance - specifically engineered for battery-powered and harsh-environment deployments.
FAQ
What is the maximum input voltage the TSX393IYDT can tolerate relative to VCC?
The TSX393IYDT accepts input voltages from −0.3 V to 16 V regardless of VCC level, enabled by internal ESD clamps. When VIN exceeds VCC+, leakage current remains below 0.2 nA at 25 °C and 250 nA at 125 °C - verified per Section 6 of DS10633 Rev 5. This eliminates external clamping diodes in 12 V automotive front-ends.
Can the TSX393IYDT drive an LED directly?
No - its open-drain outputs require an external pull-up resistor to a positive rail. To drive an LED, connect the anode to VCC (or another supply), cathode to Out1/Out2, and rely on the comparator's 4 mA sink capability. At VCC = 12 V and IOL = 4 mA, VOL remains ≤ 150 mV, ensuring ≥11.85 V forward bias across the LED series resistor.
Does the TSX393IYDT support dual-supply operation?
Yes - it operates with symmetric dual supplies from ±1.35 V to ±8 V (e.g., ±5 V), as specified in the "Wide single supply range" feature and Table 2. The VCC+ and VCC− pins become the positive and negative rails respectively; input common-mode range extends from VCC− to (VCC+ − 1.5 V), preserving functionality in bipolar signal chains.
How does the TSX393IYDT differ from the TSX393IST in MiniSO8 package?
Both share identical electrical specifications and AEC-Q100 qualification, but TSX393IYDT uses SO8 (5.0 mm × 4.0 mm) while TSX393IST uses MiniSO8 (3.0 mm × 2.8 mm). The SO8 variant offers higher thermal resistance (125 °C/W vs. 190 °C/W), better mechanical robustness for vibration-prone locations, and legacy footprint compatibility with TS393 designs.
TSX393IYDT 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:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- 8-SOIC
TSX393IYDT FAQ
1.How can I place an order for TSX393IYDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSX393IYDT 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 TSX393IYDT reliable?
The price and inventory of TSX393IYDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSX393IYDT is usually 5 days.
3.What payment methods are accepted for TSX393IYDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSX393IYDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSX393IYDT?
TSX393IYDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSX393IYDT 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 TSX393IYDT?
For technical support, including TSX393IYDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSX393IYDT requirements.
6.How does Aetrix verify that TSX393IYDT is sourced from the original manufacturer or authorized distributors?
All TSX393IYDT 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 TSX393IYDT meets industry standards.
7.What is the process for return or replacement of TSX393IYDT?
All TSX393IYDT units undergo pre-shipment inspection (PSI). If there is an issue with TSX393IYDT, 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 TSX393IYDT part is unused and in its original packaging.
Return procedure for TSX393IYDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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