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STMicroelectronics TS864IN
- Part No.:
- TS864IN
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TS864IN.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,627
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Product details
Overview
TS864IN from STMicroelectronics is a quad 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, 500 ns propagation delay at 100 mV overdrive, and rail-to-rail CMOS inputs - deployed in battery-powered smoke detectors and portable communication systems.
For engineers reviewing the TS864IN datasheet, TS864IN pinout, TS864IN application, or TS864IN equivalent, this page delivers verified electrical specs, SO-14 package mapping, functional role in low-power threshold detection, and direct microcontroller interface capability without external pull-ups.
Technical Context
The TS864IN implements four independent high-precision comparators with rail-to-rail input common-mode range (VCC−0.3 V to VCC+0.3 V) and push-pull output stages capable of sourcing/sinking 5 mA. Its BiCMOS architecture enables ultra-low quiescent current while maintaining 240 dB large-signal voltage gain and 75 dB common-mode rejection at 10 V supply.
It operates across −40 °C to +85 °C with guaranteed input offset voltage ≤18 mV (max), 6 µV/°C drift, and latch-up immunity per Class A. Propagation delay scales with overdrive: 0.4–0.5 µs at 100 mV overdrive (VCC = 5 V), and remains stable across 2.7–10 V supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 10 V - supports single-cell Li-ion, dual-cell alkaline, and regulated 5 V/3.3 V rails without level-shifting. |
| Quiescent Current | 6 µA per comparator at 2.7 V - enables >1-year operation on CR2032 in always-on smoke detector wake-up circuits. |
| Propagation Delay | 0.4 µs (TPHL) / 0.5 µs (TPLH) at 100 mV overdrive, VCC = 5 V - sufficient for fast analog threshold detection in portable audio or sensor wake logic. |
| Input Offset Voltage | ≤18 mV (max) over temperature - ensures reliable 50 mV-level signal discrimination in gas sensor front-ends. |
| Output Type | Push-pull CMOS - eliminates need for external pull-up resistors when interfacing directly to 3.3 V or 5 V microcontroller GPIOs. |
| Input Common-Mode Range | Rail-to-rail (VCC−0.3 V to VCC+0.3 V) - allows direct sensing of battery voltage or reference-free sensor outputs down to ground. |
| ESD Protection | 2 kV HBM - provides robustness against handling discharge in handheld device assembly lines. |
Pinout & Package
TS864IN is packaged in SO-14 (Small Outline, 14-pin, 3.9 mm × 8.7 mm body, 1.27 mm pitch), RoHS-compliant and ECOPACK® certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Comp 1) | Accepts reference or sensor signal; rail-to-rail CMOS input enables direct connection to grounded sensors. |
| 2 | Non-inverting Input (Comp 1) | Accepts monitored signal; common-mode range extends to VCC+0.3 V for high-side sensing. |
| 3 | Output (Comp 1) | Push-pull CMOS output drives MCU interrupt pin directly; no external pull-up required. |
| 4 | Inverting Input (Comp 2) | Dedicated second comparator input; electrically isolated from Comp 1 for dual-threshold detection. |
| 5 | Non-inverting Input (Comp 2) | Independent input for secondary monitoring path (e.g., temperature + voltage supervision). |
| 6 | Output (Comp 2) | Active-high or active-low logic output configurable via external resistor network or firmware. |
| 7 | VCC− (GND) | Power return reference for all four comparators; shared low-impedance ground plane required. |
| 8 | VCC+ | Positive supply input; decoupling capacitor (100 nF) recommended within 5 mm of pin for noise immunity. |
| 9 | Output (Comp 3) | Third independent output; supports triple-fault detection or cascaded window comparator topology. |
| 10 | Inverting Input (Comp 3) | Third comparator input; enables simultaneous monitoring of three distinct analog thresholds. |
| 11 | Non-inverting Input (Comp 3) | Paired with Pin 10 for third comparator; supports differential or single-ended configurations. |
| 12 | Inverting Input (Comp 4) | Fourth comparator input; allows full quad-threshold system (e.g., multi-zone fire alarm logic). |
| 13 | Non-inverting Input (Comp 4) | Final input channel; enables redundancy or hysteresis implementation via feedback resistor. |
| 14 | Output (Comp 4) | Fourth logic output; supports OR-wired alarm aggregation or independent status reporting. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail CMOS inputs | Enables direct interface to sensors operating at 0 V to VCC without external biasing or level shifters. |
| Push-pull output stage | Drives microcontroller GPIOs directly - eliminates pull-up resistors, saves PCB area, and reduces BOM count. |
| 6 µA per comparator quiescent current | Extends battery life in always-on applications: e.g., 10 µA total system sleep current achievable with TS864IN + ultra-low-power MCU. |
| 500 ns response time at 100 mV overdrive (2.7 V) | Supports rapid fault detection in portable medical monitors or emergency alert systems requiring sub-millisecond latency. |
| Latch-up immunity (Class A) | Guarantees immunity to destructive latch-up under transient overvoltage or ESD events in industrial environments. |
Applications
| Smoke Detector Threshold Monitoring | Portable Communication Power Sequencing |
|---|---|
|
Use Scenario: Detecting ionization chamber current changes exceeding 50 mV threshold in battery-powered residential smoke alarms. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous low-battery warning, smoke presence, heater fault, and tamper detection. Use Value: 6 µA per comparator enables >2-year CR123A battery life; push-pull outputs drive MCU interrupts without external components. |
Use Scenario: Controlling power-up sequence of RF transceiver, baseband processor, and display in handheld radios. IC Role / Device Role / Timing Role: TS864IN monitors DC-DC converter outputs and generates enable signals with precise voltage hysteresis. Use Value: Rail-to-rail inputs accurately sense 1.2 V, 1.8 V, 2.8 V, and 3.3 V rails; 0.5 µs delay ensures deterministic sequencing timing. |
| Gas Sensor Signal Conditioning | Fire Alarm Zone Supervision |
|
Use Scenario: Converting electrochemical gas sensor output (0–100 mV) into digital alarm flags for CO, methane, or NO₂ detection. IC Role / Device Role / Timing Role: Each comparator channels a dedicated gas type with adjustable reference; outputs feed OR-gated alarm bus. Use Value: 18 mV max input offset ensures <5% error at 100 mV full scale; 75 dB CMRR rejects common-mode noise from shared heater supply. |
Use Scenario: Supervising 4 independent fire alarm loop zones (heat, smoke, flame, manual call point) in commercial building panels. IC Role / Device Role / Timing Role: TS864IN compares zone voltage drops against precision references to detect open/short faults and alarm conditions. Use Value: Quad integration reduces component count vs. discrete solutions; Class A latch-up immunity prevents field failures during surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339MTX/NOPB | Open-collector outputs, higher ICC (250 µA), wider VCC range (2–36 V), no rail-to-rail inputs. | Requires pull-up resistors and level-shifting for low-voltage MCU interfaces; suited for industrial 12/24 V systems. | Select only if legacy compatibility or high-voltage operation (>10 V) is mandatory; not suitable for battery life-critical designs. |
| TLV3704IPW | Lower ICC (1 µA), rail-to-rail I/O, but slower (2.5 µs delay), limited VCC (2.7–16 V), no Class A latch-up rating. | Better for ultra-low-power sleep modes but insufficient for <1 µs fault response; lacks robustness in noisy environments. | Prefer for energy-harvesting applications where speed is non-critical; avoid in safety-critical smoke/fire systems requiring proven latch-up immunity. |
Compared with LM339MTX/NOPB and TLV3704IPW, TS864IN uniquely balances micropower (6 µA), speed (0.4 µs), rail-to-rail inputs, push-pull outputs, and Class A latch-up immunity - making it optimal for certified battery-powered safety equipment where reliability and BOM simplicity are co-prioritized.
Availability
TS864IN is available at Aetrix Electronics and suitable for smoke detector manufacturing, portable radio production, gas sensor module assembly, and fire alarm panel design requiring stable component supply and long-term lifecycle support.
Supply support for TS864IN 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 industrial, automotive, and consumer markets.
The TS86x family was engineered specifically for ultra-low-power, high-reliability analog threshold detection in battery-constrained safety and portable systems - emphasizing quiescent current, input flexibility, and robustness over raw speed.
FAQ
What is the maximum operating temperature range for TS864IN?
The TS864IN is specified for continuous operation from −40 °C to +85 °C ambient temperature. This range is fully characterized per Table 2 of the datasheet (Doc ID 6422 Rev 3), with all electrical parameters guaranteed across this interval using correlation and design validation - no derating required at end points.
Does TS864IN require external pull-up resistors on its outputs?
No. TS864IN features integrated push-pull CMOS output stages capable of sourcing up to 5 mA and sinking up to 5 mA. This allows direct connection to 3.3 V or 5 V microcontroller GPIO pins without external pull-up resistors - confirmed in the "Description" section and Figure 5 of the datasheet.
Can TS864IN operate from a single 3.3 V supply?
Yes. TS864IN supports supply voltages from 2.7 V to 10 V, including 3.3 V nominal rails. At 3.3 V, typical supply current is 7–8 µA per comparator, input common-mode range spans 0.0 to 3.6 V, and output high/low levels meet 3.3 V logic thresholds with margins - per Tables 3–5 in the datasheet.
Is TS864IN pin-compatible with other devices in the TS86x family?
TS864IN (quad, SO-14) shares identical pinout with TS864ID and TS864AID variants, differing only in input offset grade (standard vs. "A" grade). It is not pin-compatible with TS861 (SOT23-5, single) or TS862 (SO-8/TSSOP8, dual), which use different package footprints and pin counts - verified in Section 3 (Package information) and Table 11 (Ordering information).
TS864IN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 4
- 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:
- Through Hole
- :
- 14-DIP
TS864IN FAQ
1.How can I place an order for TS864IN through Aetrix?
Please submit a Request for Quotation (RFQ) for TS864IN 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 TS864IN reliable?
The price and inventory of TS864IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS864IN is usually 5 days.
3.What payment methods are accepted for TS864IN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS864IN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS864IN?
TS864IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS864IN 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 TS864IN?
For technical support, including TS864IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS864IN requirements.
6.How does Aetrix verify that TS864IN is sourced from the original manufacturer or authorized distributors?
All TS864IN 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 TS864IN meets industry standards.
7.What is the process for return or replacement of TS864IN?
All TS864IN units undergo pre-shipment inspection (PSI). If there is an issue with TS864IN, 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 TS864IN part is unused and in its original packaging.
Return procedure for TS864IN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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