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STMicroelectronics TS864AIN
- Part No.:
- TS864AIN
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TS864AIN.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,284
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Product details
Overview
TS864AIN 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 500 ns propagation delay (100 mV overdrive), push-pull outputs eliminating external pull-up resistors, and rail-to-rail CMOS inputs - deployed in battery-powered smoke detectors and portable communication systems.
For engineers reviewing the TS864AIN datasheet, TS864AIN pinout, TS864AIN application, or TS864AIN equivalent, key selection criteria include ultra-low supply current, guaranteed -40 °C to +85 °C operation, push-pull output drive capability, input offset voltage ≤18 mV, and compatibility with SOT23-5, SO-8, TSSOP8, SO-14, and TSSOP14 packages.
Technical Context
The TS864AIN implements four independent high-speed comparators using BiCMOS process technology, enabling rail-to-rail input common-mode range (VCC−0.3 V to VCC+0.3 V) and fast response (TPLH/TPHL = 0.5 µs typ. at 100 mV overdrive, VCC = 5 V). Each comparator delivers push-pull output capable of sourcing/sinking 5 mA without external components.
It features latch-up immunity (Class A), 2 kV HBM ESD protection, and stable operation across 2.7–10 V supply with supply voltage rejection ratio (SVR) of 80 dB and common-mode rejection ratio (CMR) up to 75 dB at VCC = 10 V - optimized for precision threshold detection in low-power embedded sensing nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 10 V - supports single-cell Li-ion, dual-cell alkaline, 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 detectors with periodic wake-up. |
| Propagation Delay | 0.4 µs (TPHL) / 0.5 µs (TPLH) typ. at 100 mV overdrive, VCC = 5 V - ensures rapid fault detection in safety-critical alarms. |
| Input Offset Voltage | ≤18 mV max over temperature - maintains reliable switching margin for 100 mV–500 mV sensor thresholds. |
| Output Type | Push-pull CMOS - directly interfaces to 1.8 V–5 V microcontrollers without pull-up resistors or level shifters. |
| Input Common-Mode Range | Rail-to-rail (VCC−0.3 V to VCC+0.3 V) - accepts signals near supply rails, e.g., from resistive gas sensors or battery monitors. |
| ESD Protection | 2 kV HBM - withstands handling and board-level electrostatic events in portable assembly environments. |
Pinout & Package
TS864AIN is available in SO-14 package (14-pin small outline integrated circuit), with thermal resistance RTHJA = 105 °C/W and RTHJC = 31 °C/W. Pin functions are validated per STMicroelectronics Doc ID 6422 Rev 3, Figure 26 (SO-14 outline) and Table 8 (mechanical data).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input, comparator 1 | Accepts reference or sensor signal; rail-to-rail compatible down to VCC−0.3 V. |
| 2 | Non-inverting input, comparator 1 | Accepts sensed voltage; supports direct connection to high-impedance sources (IIB ≤ 600 pA). |
| 3 | Output, comparator 1 | Push-pull CMOS output; sinks/sources ≥5 mA - drives MCU GPIO or LED directly. |
| 4 | Inverting input, comparator 2 | Dedicated input for second channel; electrically isolated from other comparators. |
| 5 | Non-inverting input, comparator 2 | Independent threshold input; enables dual-sensor monitoring (e.g., CO + smoke). |
| 6 | VCC− (GND) | Ground reference for all four comparators; shared return path for output loads. |
| 7 | Output, comparator 2 | Active-high/low logic output; no external bias required due to push-pull architecture. |
| 8 | Output, comparator 3 | Third independent digital output; supports multi-zone alarm prioritization logic. |
| 9 | Inverting input, comparator 4 | Fourth channel input; enables full-system redundancy or multi-parameter sensing. |
| 10 | Non-inverting input, comparator 4 | Final threshold input; matches electrical specs of pins 1–2 and 4–5. |
| 11 | Output, comparator 4 | Fourth logic output; fully specified for VOL ≤ 0.45 V at ISINK = 5 mA (VCC = 5 V). |
| 12 | VCC+ | Positive supply rail (2.7–10 V); powers all four comparators and output stages. |
| 13 | Inverting input, comparator 3 | Third channel inverting input; identical performance to pins 1 and 4. |
| 14 | Non-inverting input, comparator 3 | Third channel non-inverting input; supports same input voltage range as other channels. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail CMOS inputs | Enables direct interfacing with sensors operating near GND or VCC (e.g., thermistors, photodiodes) without level-shifting circuitry. |
| Push-pull output stage | Eliminates need for external pull-up resistors - reduces BOM count, PCB area, and power loss in battery-critical designs. |
| 6 µA per comparator quiescent current | Extends operational lifetime in coin-cell–powered devices (e.g., >2 years at 10 s wake-up interval in smoke detectors). |
| 500 ns response time at 2.7 V | Meets fast fault-detection timing requirements in portable medical or safety equipment where latency must be <1 µs. |
| Latch-up immunity (Class A) | Guarantees robustness against transient-induced parasitic thyristor conduction in noisy industrial or automotive-adjacent environments. |
Applications
| Smoke Detector Interface | Portable Gas Sensor Node |
|---|---|
|
Use Scenario: Detecting smoke particle density via optical chamber output voltage crossing preset thresholds. IC Role / Device Role / Timing Role: Quad comparator provides independent high/low alarm latching and self-test validation using four matched channels. Use Value: Ultra-low 6 µA/channel current extends AA-battery life to >5 years; push-pull outputs drive buzzer and MCU interrupt lines directly. |
Use Scenario: Monitoring CO, NO₂, or methane concentration using electrochemical or MOS gas sensors with analog output. IC Role / Device Role / Timing Role: Compares sensor output against multiple calibrated reference voltages to trigger tiered alerts (warning/caution/danger). Use Value: Rail-to-rail inputs accept full 0–3.3 V sensor swing; 18 mV max VIO ensures accurate 50 mV gas-concentration thresholds. |
| Low-Power Alarm System | Industrial Battery Monitor |
|
Use Scenario: Supervising door/window contact switches, motion sensors, and tamper detection in wireless security panels. IC Role / Device Role / Timing Role: Four comparators condition discrete sensor inputs into clean digital signals for RF transceiver wake-up control. Use Value: 2.7–10 V operation covers primary lithium, NiMH, and backup supercapacitor supplies; 2 kV ESD protects field-deployed units. |
Use Scenario: Monitoring individual cell voltages in 3S Li-ion packs for overvoltage/undervoltage protection in portable tools. IC Role / Device Role / Timing Role: Configured as window comparators per cell using two channels, with third/fourth for pack-level status flags. Use Value: 75 dB CMR rejects common-mode noise from switching chargers; 0.4 µs propagation delay enables sub-10 µs fault response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Higher ICC (500 µA vs. 6 µA), open-collector outputs requiring pull-ups, wider VCC range (2–36 V), no rail-to-rail inputs. | Suitable for higher-voltage industrial controls but incompatible with coin-cell operation or direct MCU interfacing. | Select when supply >12 V or legacy open-collector bus architecture is required; avoid for battery life-critical designs. |
| TLV3704IPW | Lower ICC (1 µA), rail-to-rail inputs/outputs, but only 1.8–5.5 V supply range and 3 µs propagation delay at 5 V. | Better for ultra-low-power sub-3.3 V IoT nodes, but cannot support 9 V alarm batteries or 10 V industrial rails. | Prefer for 1.8–3.3 V energy-harvesting systems; reject if >5.5 V supply or <1 µs response is needed. |
Compared with LM339DR and TLV3704IPW, TS864AIN uniquely balances ultra-low 6 µA current, 10 V operation, rail-to-rail inputs, and sub-0.5 µs speed - making it optimal for multi-supply battery-powered safety systems requiring long life and fast response.
Availability
TS864AIN is available at Aetrix Electronics and suitable for smoke/fire detectors, portable gas analyzers, and low-power alarm systems requiring stable component supply across extended production lifecycles.
Supply support for TS864AIN 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.
TS864AIN belongs to the TS86x rail-to-rail micropower comparator family, engineered specifically for battery-operated safety and sensing applications demanding nanoscale current draw and robust output drive.
FAQ
What is the maximum operating temperature range for TS864AIN?
The TS864AIN is characterized for operation from -40 °C to +85 °C ambient temperature, with absolute maximum junction temperature rated at 150 °C. Thermal resistance values (RTHJA = 105 °C/W for SO-14) allow derating calculations for sustained 10 V operation in enclosed enclosures.
Does TS864AIN require external pull-up resistors on its outputs?
No. TS864AIN features push-pull CMOS outputs capable of sourcing and sinking ≥5 mA, enabling direct connection to microcontroller GPIOs, LEDs, or logic inputs without external pull-up resistors - confirmed by electrical characteristics tables at VCC = 2.7 V, 5 V, and 10 V.
Can TS864AIN operate from a single 3.3 V supply?
Yes. TS864AIN supports supply voltages from 2.7 V to 10 V, including 3.3 V nominal rails. At 3.3 V, typical supply current remains 6–8 µA per comparator, and propagation delay is ≤0.6 µs with 100 mV overdrive - verified in Table 3 and Figure 19–23 of the datasheet.
What is the input offset voltage drift over temperature for TS864AIN?
The input offset voltage drift is specified as 6 µV/°C across the full -40 °C to +85 °C operating range. This low drift ensures stable threshold accuracy in temperature-varying environments such as outdoor smoke detectors or vehicle-mounted gas sensors.
TS864AIN 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
- :
- 7mV @ 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
TS864AIN FAQ
1.How can I place an order for TS864AIN through Aetrix?
Please submit a Request for Quotation (RFQ) for TS864AIN 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 TS864AIN reliable?
The price and inventory of TS864AIN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS864AIN is usually 5 days.
3.What payment methods are accepted for TS864AIN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS864AIN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS864AIN?
TS864AIN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS864AIN 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 TS864AIN?
For technical support, including TS864AIN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS864AIN requirements.
6.How does Aetrix verify that TS864AIN is sourced from the original manufacturer or authorized distributors?
All TS864AIN 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 TS864AIN meets industry standards.
7.What is the process for return or replacement of TS864AIN?
All TS864AIN units undergo pre-shipment inspection (PSI). If there is an issue with TS864AIN, 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 TS864AIN part is unused and in its original packaging.
Return procedure for TS864AIN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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