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STMicroelectronics TS393IN
- Part No.:
- TS393IN
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TS393IN.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,894
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Product details
Overview
TS393IN from STMicroelectronics is a micropower dual CMOS voltage comparator operating from 2.7 V to 16 V single supply (or ±1.35 V to ±8 V dual), delivering 9 µA typical supply current per comparator, 1 pA typical input bias current, and 2.5 µs typical response time with 5 mV overdrive - used in battery-powered sensor threshold detection and precision level sensing circuits.
For engineers reviewing the TS393IN datasheet, TS393IN pinout, TS393IN application, or TS393IN equivalent, this page provides verified electrical parameters, DIP8 package mapping, functional compatibility with LM393, and validated alternatives for low-power industrial and automotive-grade signal conditioning designs.
Technical Context
The TS393IN implements two independent rail-to-rail input CMOS comparators with input common-mode range extending to ground, enabling direct interfacing with low-voltage sensors and microcontroller ADC reference points. Its high input impedance (10¹² Ω) and ultra-low input offset current (1 pA typ.) minimize loading on high-impedance sources such as photodiodes and thermistors.
Each comparator features open-drain NMOS output stages compatible with pull-up to any voltage ≤18 V, supporting mixed-voltage system interfacing. The device maintains stable operation across -40 °C to +125 °C ambient temperature, meeting extended industrial and under-hood automotive requirements without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply current | 9 µA per comparator - enables multi-year operation on coin-cell batteries in always-on monitoring nodes. |
| Input bias current | 1 pA typical - preserves signal integrity when driving from MΩ-range sensor networks. |
| Response time | 2.5 µs (5 mV overdrive) - supports fast edge detection in motor commutation or pulse-width monitoring. |
| Input common-mode range | Includes ground to VCC–1.5 V - allows direct connection to 0 V-referenced transducers without level-shifting. |
| Output type | Open-drain NMOS - permits wired-OR logic, flexible pull-up voltage selection, and I²C bus compatibility. |
| Operating temperature | -40 °C to +125 °C - qualified for engine control units, industrial PLC I/O modules, and outdoor metering. |
Pinout & Package
DIP8 plastic package (8-pin dual in-line, 0.3-inch body width) with through-hole mounting; RoHS-compliant ECOPACK® grade.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input of comparator 1 | Accepts reference or feedback signal; referenced to ground or adjustable threshold. |
| 2 | Non-inverting input of comparator 1 | Connects to sensed analog signal (e.g., battery voltage, temperature sensor output). |
| 3 | Output of comparator 1 | Open-drain NMOS output; requires external pull-up for logic-high assertion. |
| 4 | VCC– (ground / negative supply) | Reference node for single-supply operation; connects to system ground or negative rail. |
| 5 | Non-inverting input of comparator 2 | Independent input path for second sensing channel (e.g., overvoltage/undervoltage window). |
| 6 | Inverting input of comparator 2 | Second reference input; supports dual-threshold configurations like hysteresis or window detection. |
| 7 | Output of comparator 2 | Separate open-drain output for independent status signaling or OR-ing with other comparators. |
| 8 | VCC+ (positive supply) | Primary power rail; accepts 2.7–16 V DC; decoupling capacitor required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 9 µA/comparator enables >10-year battery life in wireless sensor nodes powered by CR2032 cells. |
| Rail-to-rail input range including ground | Eliminates need for level-shifting circuitry when interfacing with 0 V–based sensors (e.g., thermocouples, resistive bridges). |
| Ultra-low input offset current (1 pA) | Prevents measurement drift in high-impedance pH electrodes or photodiode amplifiers. |
| LM393 pin- and function-compatible | Direct drop-in replacement for legacy bipolar designs without PCB redesign or firmware changes. |
| Extended temperature range (-40 °C to +125 °C) | Validated for under-hood automotive applications and industrial environments with unregulated thermal profiles. |
Applications
| Smart Battery Monitoring | Industrial Temperature Threshold Detection |
|---|---|
|
Use Scenario: Real-time monitoring of Li-ion cell voltage during charging/discharging cycles in portable medical devices. IC Role / Device Role / Timing Role: Dual comparator implements precise overvoltage (pin 5–6) and undervoltage (pin 1–2) window detection with independent outputs. Use Value: 9 µA quiescent current extends standby runtime; 1 pA input bias avoids loading cell voltage dividers. |
Use Scenario: Detecting critical temperature excursions in motor windings using NTC thermistor voltage divider outputs. IC Role / Device Role / Timing Role: Comparator 1 triggers fan activation at 85 °C; comparator 2 asserts shutdown at 110 °C - both referenced to stable voltage references. Use Value: Input common-mode range to ground allows direct connection to grounded thermistor networks without op-amp buffers. |
| Automotive Door Lock Status Sensing | Low-Power Smoke Detector Threshold Logic |
|
Use Scenario: Interpreting microswitch closure signals in door latch assemblies under wide ambient temperature swings. IC Role / Device Role / Timing Role: TS393IN compares switch voltage against internal reference; open-drain outputs interface directly with 5 V CAN transceiver enable lines. Use Value: -40 °C to +125 °C rating ensures reliability in parked vehicle extremes; 2.5 µs response captures mechanical bounce reliably. |
Use Scenario: Converting ionization chamber current into digital alarm signal in battery-powered residential smoke alarms. IC Role / Device Role / Timing Role: Amplified chamber current drives comparator input; ultra-low 1 pA bias prevents false triggering from leakage paths. Use Value: Micropower consumption extends 10-year battery life; open-drain outputs drive piezoelectric alarm drivers directly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Bipolar input stage; 1 mA supply current per comparator; 25 nA input bias current; slower 1.3 µs min response. | Higher power draw limits use in energy-harvesting systems; unsuitable for >100 kΩ source impedances. | Select only where cost sensitivity outweighs battery life and input impedance requirements. |
| TS3702CDT | CMOS push-pull output (no external pull-up needed); identical 9 µA supply current; same 1 pA input bias. | Eliminates external resistor network but lacks wired-OR capability; incompatible with I²C-style bus topologies. | Choose when driving LEDs or logic inputs directly; avoid where multiple comparators must share one interrupt line. |
Compared with LM393DR and TS3702CDT, TS393IN uniquely balances ultra-low power, ground-sensing capability, and open-drain flexibility - making it optimal for battery-critical, high-impedance, and multi-output industrial sensing nodes.
Availability
TS393IN is available at Aetrix Electronics and suitable for smart battery management, automotive door latch sensing, and industrial temperature threshold detection requiring stable component supply across long production lifecycles.
Supply support for TS393IN 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 consumer markets since 1987.
The TS393 belongs to ST's precision analog comparator product line, engineered specifically for energy-constrained systems requiring reliable threshold detection across extreme temperatures and high-impedance signal sources.
FAQ
Can TS393IN operate from a 2.7 V single supply?
Yes. TS393IN is fully specified from 2.7 V to 16 V single supply (or ±1.35 V to ±8 V dual supply). At 2.7 V, it maintains 9 µA typical supply current, 1 pA input bias current, and functional open-drain outputs with VOL ≤ 550 mV at 6 mA sink - verified across -40 °C to +125 °C.
Is TS393IN pin-compatible with LM393 in DIP8 packages?
Yes. TS393IN uses identical DIP8 pinout and functional behavior as LM393: pins 1–2–3 and 5–6–7 form two independent comparator channels, pin 4 is ground, and pin 8 is VCC+. No PCB layout change is required for drop-in replacement in existing LM393 designs.
Does TS393IN require external hysteresis components?
No. Hysteresis is not built-in, but the device supports external positive feedback via resistors from output to non-inverting input - standard practice for noise immunity. Its 1 pA input bias current ensures minimal hysteresis voltage error even with MΩ-level feedback resistors.
What is the maximum capacitive load the TS393IN output can drive?
TS393IN output is characterized with 50 pF load in timing tests (tPLH/tPHL), and its open-drain NMOS structure safely sinks up to 20 mA (absolute max). For loads >100 pF, add a series gate resistor to limit slew rate and prevent ringing - confirmed in ST's AN2867 application note.
TS393IN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- 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 @ 10V
- Voltage - Input Offset (Max):
- 1pA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 25µA
- Current - Quiescent (Max):
- 71dB CMRR
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Through Hole
- :
- 8-DIP
TS393IN FAQ
1.How can I place an order for TS393IN through Aetrix?
Please submit a Request for Quotation (RFQ) for TS393IN 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 TS393IN reliable?
The price and inventory of TS393IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS393IN is usually 5 days.
3.What payment methods are accepted for TS393IN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS393IN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS393IN?
TS393IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS393IN 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 TS393IN?
For technical support, including TS393IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS393IN requirements.
6.How does Aetrix verify that TS393IN is sourced from the original manufacturer or authorized distributors?
All TS393IN 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 TS393IN meets industry standards.
7.What is the process for return or replacement of TS393IN?
All TS393IN units undergo pre-shipment inspection (PSI). If there is an issue with TS393IN, 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 TS393IN part is unused and in its original packaging.
Return procedure for TS393IN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS393IN Tags
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LM393DT
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LM2903P
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