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STMicroelectronics TS393MDT
- Part No.:
- TS393MDT
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS393MDT.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,674
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Product details
Overview
TS393MDT from STMicroelectronics is a micropower dual CMOS voltage comparator with 9 µA typical supply current per comparator, ±1.35 V to ±8 V dual-supply or 2.7 V to 16 V single-supply operation, and 1 pA typical input bias current. It features rail-to-rail input common-mode range including ground and 2.5 µs typical response time for 5 mV overdrive, used in battery-powered sensor threshold detection and precision level sensing circuits.
For engineers reviewing the TS393MDT datasheet, TS393MDT pinout, TS393MDT application, or TS393MDT equivalent, key selection criteria include ultra-low quiescent current, ground-sensing capability, push-pull-compatible output stage, and extended industrial temperature range (–55°C to +125°C) in SO-8 package.
Technical Context
The TS393MDT implements two independent high-impedance CMOS comparators with complementary differential inputs and open-drain outputs. Its input stage supports common-mode voltages from GND to VCC – 1.5 V, enabling direct interfacing with grounded sensors and low-voltage microcontrollers.
Each comparator delivers 2.5 µs propagation delay under 5 mV overdrive with 5.1 kΩ load and 50 pF capacitance, while maintaining 70 dB minimum common-mode and supply voltage rejection ratios across its full operating temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 9 µA typ./comp. - enables multi-year operation on coin-cell batteries in always-on monitoring systems |
| Input Bias Current | 1 pA typ. - preserves signal integrity in high-impedance sensor interfaces (e.g., photodiode, pH electrode) |
| Input Common-Mode Range | 0 V to VCC – 1.5 V - allows direct GND-referenced input sensing without level-shifting circuitry |
| Response Time | 2.5 µs typ. (5 mV overdrive) - supports fast edge detection in motor commutation or overvoltage latch circuits |
| Input Offset Voltage | 6.5 mV max. - sets minimum detectable differential voltage in precision window comparators |
| Output Type | Open-drain - permits wired-OR logic, level translation, and pull-up to higher voltage rails |
Pinout & Package
TS393MDT is housed in an SO-8 (Small Outline) plastic micropackage per JEDEC MS-012, with 1.27 mm pitch, 4.8–5.0 mm width, and 3.8–4.0 mm length. Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Comparator 1) | Accepts reference or sensed signal for first comparator; supports GND-referenced inputs |
| 2 | Non-inverting Input (Comparator 1) | Accepts variable signal (e.g., sensor output); high-impedance node minimizes loading |
| 3 | Output (Comparator 1) | Open-drain output requiring external pull-up; compatible with 3.3 V or 5 V logic domains |
| 4 | VCC– / GND | Negative supply or ground reference; must be connected even in single-supply configurations |
| 5 | Non-inverting Input (Comparator 2) | Independent second channel input; identical electrical characteristics to Pin 2 |
| 6 | Inverting Input (Comparator 2) | Second comparator reference input; fully isolated from Channel 1 |
| 7 | Output (Comparator 2) | Separate open-drain output; enables independent control of two system thresholds |
| 8 | VCC+ | Positive supply rail (2.7–16 V); powers both comparators and internal bias circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 9 µA/comparator enables >10-year battery life in wireless sensor nodes with intermittent wake-up |
| GND-Inclusive Input Range | 0 V to VCC–1.5 V allows direct connection to shunt resistors, thermistors, or op-amp outputs referenced to ground |
| High Input Impedance | 1012 Ω typical prevents loading of high-Z sources such as piezoelectric transducers or capacitive sensors |
| ESD Robustness | 50 V HBM rating ensures reliability during board handling and assembly in industrial environments |
Applications
| Battery Voltage Monitor | Over-Temperature Protection |
|---|---|
Use Scenario: Detecting low battery condition in portable medical devices before shutdown. IC Role / Device Role / Timing Role: Dual comparator configured as window detector comparing battery voltage against upper/lower thresholds. Use Value: 9 µA total quiescent current extends operational lifetime between CR2032 replacements by >30% versus bipolar alternatives. | Use Scenario: Shutting down power stages when heatsink temperature exceeds safe limit in motor drives. IC Role / Device Role / Timing Role: Comparator compares thermistor voltage to fixed reference; output triggers latch circuit. Use Value: 1 pA input bias current eliminates self-heating error in high-resistance thermistor networks. |
| Zero-Crossing Detector | Smoke Detector Threshold Sensing |
Use Scenario: Identifying AC line zero-crossing points for phase-controlled dimmers in smart lighting. IC Role / Device Role / Timing Role: Fast-response comparator detects polarity reversal of transformer-coupled AC signal. Use Value: 2.5 µs propagation delay ensures timing accuracy within ±0.5° at 50 Hz, critical for EMI reduction. | Use Scenario: Triggering alarm when ionization chamber current drops below smoke-obscuration threshold. IC Role / Device Role / Timing Role: High-impedance comparator senses picoamp-level chamber current via transimpedance amplifier. Use Value: 1012 Ω input impedance prevents signal attenuation in ultra-low-current sensing paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual voltage comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Higher 1 mA supply current per comparator; bipolar input stage; no GND-sensing capability | Not suitable for battery-powered systems requiring >1-year runtime; requires level-shifting for GND-referenced inputs | Select only where cost is primary constraint and power budget exceeds 500 µA |
| TLV3702IDR | CMOS input, 1.2 µA supply current, rail-to-rail input, but only rated to +85°C | Lacks extended temperature support; unsuitable for under-hood automotive or industrial ambient >85°C | Prefer for commercial-grade portable equipment where size and power are critical but temp range is limited |
Compared with LM393DR and TLV3702IDR, TS393MDT uniquely balances ultra-low power (9 µA), extended temperature (–55°C to +125°C), and true ground-sensing capability-making it optimal for harsh-environment, long-life embedded monitoring.
Availability
TS393MDT is available at Aetrix Electronics and suitable for battery management systems, industrial temperature controllers, smoke detectors, and automotive body electronics requiring stable component supply across extended temperature ranges.
Supply support for TS393MDT 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, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.
The TS393 belongs to ST's precision analog comparator product line, engineered specifically for ultra-low-power, high-impedance sensing applications in resource-constrained and thermally demanding environments.
FAQ
Can TS393MDT operate from a single 3.3 V supply?
Yes. TS393MDT supports single-supply operation from 2.7 V to 16 V. At 3.3 V, it maintains full functionality: input common-mode range spans 0 V to 1.8 V, output can sink ≥6 mA, and supply current remains ≤20 µA per comparator across –55°C to +125°C.
Does TS393MDT require external pull-up resistors on its outputs?
Yes. Both outputs are open-drain and require external pull-up resistors to define logic-high voltage level. Recommended values range from 10 kΩ (for speed-critical applications) to 100 kΩ (to minimize standby current), depending on load capacitance and rise-time requirements.
How does TS393MDT handle input voltages exceeding the supply rails?
Input voltages may exceed VCC or go below GND, provided the differential input voltage stays within ±18 V and the common-mode voltage remains between 0 V and VCC – 1.5 V. Exceeding these limits risks damage due to ESD diode conduction; external clamping is recommended for overvoltage-prone signals.
Is TS393MDT pin-compatible with LM393 in SO-8 package?
Yes. TS393MDT uses identical SO-8 pinout and functional mapping as LM393 (Pins 1–3 and 5–7), allowing drop-in replacement in existing designs. However, note that TS393MDT has different output behavior under no-load conditions and requires verification of pull-up resistor compatibility due to lower leakage.
TS393MDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- CMOS, Open-Drain
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 16V, ±1.35V ~ 8V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 1pA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 25µA
- Current - Quiescent (Max):
- 71dB CMRR
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -55°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
TS393MDT FAQ
1.How can I place an order for TS393MDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS393MDT 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 TS393MDT reliable?
The price and inventory of TS393MDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS393MDT is usually 5 days.
3.What payment methods are accepted for TS393MDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS393MDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS393MDT?
TS393MDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS393MDT 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 TS393MDT?
For technical support, including TS393MDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS393MDT requirements.
6.How does Aetrix verify that TS393MDT is sourced from the original manufacturer or authorized distributors?
All TS393MDT 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 TS393MDT meets industry standards.
7.What is the process for return or replacement of TS393MDT?
All TS393MDT units undergo pre-shipment inspection (PSI). If there is an issue with TS393MDT, 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 TS393MDT part is unused and in its original packaging.
Return procedure for TS393MDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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