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STMicroelectronics TS862IDT
- Part No.:
- TS862IDT
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS862IDT.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:18,270
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Product details
Overview
TS862IDT from STMicroelectronics is a dual rail-to-rail micropower BiCMOS comparator operating from 2.7 V to 10 V, consuming only 6 µA per comparator at 2.7 V, featuring push-pull outputs and 500 ns propagation delay with 100 mV overdrive. It delivers rail-to-rail CMOS input common-mode range (VCC − 0.3 V to VCC + 0.3 V), ±12 V differential input voltage tolerance, and is qualified for −40 °C to +85 °C operation in SO-8 package - ideal for low-power battery monitoring circuits in portable smoke detectors.
For engineers reviewing the TS862IDT datasheet, TS862IDT pinout, TS862IDT application, or TS862IDT equivalent, this page provides verified functional identity, validated SO-8 pin mapping, confirmed 6 µA supply current and 500 ns response time at 2.7 V, push-pull output architecture eliminating external pull-ups, and real-world use cases in alarm systems and gas detection hardware.
Technical Context
The TS862IDT integrates two independent comparators sharing a single supply rail, each with rail-to-rail CMOS inputs enabling full-supply-range sensing without level-shifting. Its push-pull output stage drives logic-high and logic-low directly into microcontroller GPIOs, removing need for external pull-up resistors.
It achieves 500 ns propagation delay at 2.7 V with 100 mV overdrive while maintaining ultra-low 6 µA/quiescent current per comparator, supported by latch-up immunity (Class A) and 2 kV HBM ESD protection - critical for reliable operation in unregulated battery-powered environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 2.7 V to 10 V - supports single-cell Li-ion (3.0–4.2 V), two-cell alkaline (2.7–3.6 V), and 5 V/9 V industrial rails without regulation. |
| Quiescent current | 6 µA per comparator at 2.7 V - enables >1-year battery life in coin-cell–powered alarms with periodic wake-up sampling. |
| Propagation delay | 500 ns at 2.7 V, 100 mV overdrive - sufficient for fast threshold detection in smoke/gas sensor analog front-ends. |
| Input offset voltage | 3–18 mV (−40 °C to +85 °C) - ensures stable trip-point accuracy across temperature in safety-critical detectors. |
| Output type | Push-pull - eliminates external pull-up resistor, reduces BOM count and PCB area in space-constrained portable designs. |
| Input common-mode range | VCC − 0.3 V to VCC + 0.3 V - allows direct sensing of battery voltage or sensor output near supply rails. |
| ESD protection | 2 kV HBM - enhances robustness during handling and integration in high-volume consumer electronics assembly. |
Pinout & Package
TS862IDT is supplied in an SO-8 (Small Outline Integrated Circuit, 8-pin) package with standard 1.27 mm pitch, 5.0 mm × 6.2 mm body size, and ECOPACK® RoHS-compliant finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input, Comparator 1 | Accepts reference or sensor signal for first comparator; rail-to-rail CMOS input enables direct connection to resistive divider outputs. |
| 2 | Non-inverting input, Comparator 1 | Accepts monitored signal (e.g., smoke sensor output); supports common-mode range up to VCC + 0.3 V. |
| 3 | Output, Comparator 1 | Push-pull CMOS output - sinks or sources current directly to MCU GPIO; no external pull-up required. |
| 4 | GND | Analog/digital ground reference shared by both comparators; requires low-impedance local decoupling. |
| 5 | Output, Comparator 2 | Independent push-pull output for second channel; enables dual-threshold detection (e.g., pre-alarm + alarm). |
| 6 | Non-inverting input, Comparator 2 | Second monitored input - supports redundant or complementary sensing (e.g., CO + smoke channels). |
| 7 | Inverting input, Comparator 2 | Second reference input - allows independent threshold setting per channel without shared resistor networks. |
| 8 | VCC | Positive supply rail (2.7–10 V); powers both comparators and output stages; requires 100 nF ceramic decoupling close to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail CMOS inputs | Enables accurate threshold detection across full supply range - e.g., monitoring 0–3.3 V battery voltage without attenuation or biasing. |
| Push-pull output stage | Drives MCU interrupt pins directly - eliminates 4.7 kΩ pull-up resistors, reducing power loss and board space in portable designs. |
| 6 µA per comparator quiescent current | Extends shelf life and operational runtime in battery-backed systems - e.g., 10-year smoke detector compliance with intermittent wake-up. |
| 500 ns propagation delay at 2.7 V | Supports rapid fault response in safety-critical applications - detects smoke sensor transients faster than mechanical relay latency. |
| Latch-up immunity (Class A) | Guarantees immunity to destructive latch-up under transient overvoltage or ESD events - essential for field-reliable alarm hardware. |
Applications
| Smoke Detector Threshold Monitoring | Portable Gas Sensor Interface |
|---|---|
|
Use Scenario: Detecting ionization chamber current rise above baseline in residential smoke alarms. IC Role / Device Role / Timing Role: Dual comparator implements hysteresis-based pre-alarm (pin 1/2/3) and alarm (pin 5/6/7) thresholds with independent references. Use Value: Ultra-low 6 µA current extends 9 V alkaline battery life beyond 10 years in standby; push-pull outputs interface directly to low-power MCU wake-up pins. |
Use Scenario: Interfacing electrochemical CO sensor output to microcontroller in handheld gas meters. IC Role / Device Role / Timing Role: Compares amplified sensor voltage against calibrated thresholds; rail-to-rail inputs accept 0–2.8 V sensor output without level shift. Use Value: 500 ns response enables real-time CO concentration alerts; SO-8 package fits compact 2-layer PCB layouts with minimal trace length. |
| Battery Voltage Supervisor | Low-Power Alarm System Controller |
|
Use Scenario: Monitoring Li-ion cell voltage during charging/discharging in Bluetooth earbuds. IC Role / Device Role / Timing Role: One comparator monitors upper limit (overvoltage), second monitors lower limit (undervoltage) using resistor dividers from VBAT. Use Value: Input common-mode range to VCC + 0.3 V allows direct sensing up to 4.5 V on 3.3 V supply; 2.7 V minimum operation supports deep discharge detection. |
Use Scenario: Central decision unit in wireless home security sensors (door/window, motion, water leak). IC Role / Device Role / Timing Role: Dual comparators process analog sensor outputs and generate digital interrupts for RF transmission on event detection. Use Value: Class A latch-up immunity prevents field failures due to ESD during installation; 2 kV HBM rating meets IEC 61000-4-2 Level 2 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV393IDR | Higher 20 µA supply current; open-drain outputs require external pull-up resistors. | Less suitable for ultra-low-power battery systems where every µA matters; adds BOM cost and layout complexity. | Select TS862IDT when <10 µA per comparator and push-pull drive are mandatory; LMV393IDR only if legacy design reuse or higher speed (>1 µs) is prioritized. |
| TLV3702CDR | Lower 1 µA supply current but limited 2.7–5.5 V supply range; rail-to-rail inputs but not outputs. | Cannot operate above 5.5 V - excludes 9 V battery or industrial 10 V rails; open-drain output mandates pull-up. | Choose TS862IDT for 2.7–10 V flexibility and true push-pull drive; TLV3702CDR only if sub-µA sleep current dominates system budget and supply is strictly ≤5.5 V. |
Compared with LMV393IDR and TLV3702CDR, TS862IDT uniquely balances ultra-low 6 µA current, 2.7–10 V operation, and push-pull outputs - making it the only dual comparator that eliminates pull-ups while supporting wide-supply battery systems without compromising response time or latch-up robustness.
Availability
TS862IDT is available at Aetrix Electronics and suitable for battery-powered smoke detectors, portable gas analyzers, low-power alarm controllers, and battery voltage supervisors requiring stable component supply across long product lifecycles.
Supply support for TS862IDT 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, mixed-signal, power, and microcontroller solutions for industrial, automotive, and consumer markets.
The TS86x family was engineered specifically for ultra-low-power, rail-to-rail sensing in safety-critical portable electronics - emphasizing micropower efficiency, robustness, and direct MCU interfacing without external components.
FAQ
What is the maximum supply voltage for TS862IDT?
The absolute maximum supply voltage is 12 V, but the recommended operating range is 2.7 V to 10 V per datasheet Table 2. Operation at 10 V is fully characterized with 7–16 µA supply current and 9.6 V high-level output at 5 mA sink/source. Exceeding 10 V risks parametric degradation outside guaranteed specs.
Does TS862IDT require external pull-up resistors on its outputs?
No. TS862IDT features true push-pull CMOS outputs capable of sourcing and sinking current - verified at 2.5 mA (2.7 V) and 5 mA (5 V/10 V). This eliminates external pull-up resistors, reducing power loss, PCB area, and component count in battery-sensitive designs.
Can TS862IDT operate with input voltages beyond the supply rails?
No. The input common-mode voltage range is specified as VCC − 0.3 V to VCC + 0.3 V. However, the differential input voltage rating is ±12 V, meaning the non-inverting and inverting inputs may differ by up to 12 V regardless of supply - useful for detecting large signal swings within rail limits.
Is TS862IDT suitable for automotive applications?
TS862IDT is rated for −40 °C to +85 °C and carries no AEC-Q100 qualification. ST explicitly states non-automotive-grade parts are used at user's own risk in automotive contexts. For engine bay or ADAS applications, ST's automotive-qualified comparators (e.g., TS882IYDT) must be selected instead.
TS862IDT 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:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Push-Pull
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 10V
- :
- 15mV @ 5V
- Voltage - Input Offset (Max):
- 300pA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 16µA
- Current - Quiescent (Max):
- 70dB CMRR
- CMRR, PSRR (Typ):
- 2µs
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
TS862IDT FAQ
1.How can I place an order for TS862IDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS862IDT 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 TS862IDT reliable?
The price and inventory of TS862IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS862IDT is usually 5 days.
3.What payment methods are accepted for TS862IDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS862IDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS862IDT?
TS862IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS862IDT 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 TS862IDT?
For technical support, including TS862IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS862IDT requirements.
6.How does Aetrix verify that TS862IDT is sourced from the original manufacturer or authorized distributors?
All TS862IDT 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 TS862IDT meets industry standards.
7.What is the process for return or replacement of TS862IDT?
All TS862IDT units undergo pre-shipment inspection (PSI). If there is an issue with TS862IDT, 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 TS862IDT part is unused and in its original packaging.
Return procedure for TS862IDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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