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STMicroelectronics TS864IPT
- Part No.:
- TS864IPT
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TS864IPT.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:24,036
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Product details
Overview
TS864IPT from STMicroelectronics is a quad rail-to-rail micropower BiCMOS comparator operating from 2.7 V to 10 V, consuming only 6 µA per channel at 2.7 V, featuring push-pull outputs, 500 ns propagation delay at 100 mV overdrive, and rail-to-rail CMOS inputs-designed for ultra-low-power sensing in battery-powered smoke detectors.
For engineers reviewing the TS864IPT datasheet, TS864IPT pinout, TS864IPT application, or TS864IPT equivalent, key selection criteria include supply current vs. voltage, input offset drift (6 µV/°C), push-pull output drive capability without external pull-ups, and TSSOP14 thermal resistance (100 °C/W).
Technical Context
The TS864IPT implements four independent high-precision comparators with rail-to-rail input stages enabling full-supply-range signal detection, and push-pull CMOS outputs eliminating need for external pull-up resistors-critical for direct interfacing with 3.3 V or 5 V microcontrollers.
It delivers stable operation across -40 °C to +85 °C with latch-up immunity (Class A), 2 kV HBM ESD protection, and common-mode rejection of 75 dB at 10 V supply-ensuring robust performance in noisy industrial sensor nodes and portable safety equipment.
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 standard 5 V/3.3 V rails without regulation. |
| Supply current per comparator | 6 µA at 2.7 V - enables >10-year battery life in always-on gas detection systems using CR2032 cells. |
| Propagation delay | 500 ns at 100 mV overdrive, 2.7 V - provides fast response for smoke alarm threshold crossing detection. |
| Input offset voltage | 3–18 mV (max) - ensures reliable discrimination of small analog sensor signals without calibration. |
| Common-mode rejection | 75 dB at 10 V - maintains accuracy despite ground bounce or supply ripple in compact PCB layouts. |
| Output type | Push-pull CMOS - drives MCU GPIO directly; no pull-up resistor required, reducing BOM count and board space. |
| ESD protection | 2 kV HBM - protects against handling damage during assembly and field service in handheld devices. |
Pinout & Package
TSSOP14 package: 4.9–5.1 mm × 6.2–6.6 mm × 1.05 mm height, 0.65 mm pitch, lead-free ECOPACK® compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Non-inverting input (Comp 1) | Accepts rail-to-rail analog input up to VCC; enables high-side reference comparison. |
| 2 | Inverting input (Comp 1) | Differential pair input with 1 pA bias current; supports high-impedance sensor interfaces. |
| 3 | Output (Comp 1) | Push-pull CMOS output sinking/sourcing ≥2.5 mA; logic-level compatible with 3.3 V/5 V MCUs. |
| 4 | Non-inverting input (Comp 2) | Independent channel input; allows dual-threshold or window-comparator configurations. |
| 5 | Inverting input (Comp 2) | Matched offset and drift to Pin 2; supports precision differential sensing pairs. |
| 6 | Output (Comp 2) | Active-high/low output with 20 ns rise/fall time; suitable for interrupt generation. |
| 7 | VCC+ | Positive supply rail for all four comparators; decoupling capacitor placement critical for noise immunity. |
| 8 | Output (Comp 3) | Third independent output; enables multi-zone monitoring (e.g., temperature + smoke + CO). |
| 9 | Output (Comp 4) | Fourth output; supports redundancy or status signaling without additional ICs. |
| 10 | Inverting input (Comp 3) | Input for third comparator; shares same VCC+ and VCC− rails as others. |
| 11 | Non-inverting input (Comp 3) | High-impedance input node; used for reference voltage comparison in battery-monitoring circuits. |
| 12 | Inverting input (Comp 4) | Final input terminal; enables full quad functionality in space-constrained TSSOP footprint. |
| 13 | Non-inverting input (Comp 4) | Supports independent sensor channel; no crosstalk between channels confirmed per datasheet layout guidelines. |
| 14 | VCC− | Ground reference for all comparators; requires low-impedance connection to minimize PSRR degradation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail CMOS inputs | Enables detection of signals from 0 V to VCC - essential for battery voltage monitoring down to 2.7 V cutoff. |
| Push-pull output stage | Eliminates external pull-up resistors, saving 4× 10 kΩ resistors and PCB area in quad-sensor designs. |
| 6 µA per comparator quiescent current | Reduces total system standby current to <25 µA - extends CR2032 battery life beyond 10 years in smoke alarms. |
| 500 ns propagation delay at 100 mV overdrive | Ensures sub-millisecond response to rapid gas concentration changes, meeting UL 217 fast-alarm requirements. |
| Latch-up immunity (Class A) | Guarantees no destructive latch-up under transient overvoltage or ESD events - critical for field-replaceable modules. |
Applications
| Smoke Detector Interface | Portable Gas Analyzer |
|---|---|
Use Scenario: Compares ionization chamber or photoelectric sensor output against programmable thresholds to trigger audible/visual alarms. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous low/high threshold detection, window comparison, and self-test validation. Use Value: Push-pull outputs drive buzzer and LED directly; 6 µA/channel current enables >5-year battery life in sealed units. | Use Scenario: Monitors electrochemical sensor outputs for CO, NO₂, or VOCs in handheld air quality meters. IC Role / Device Role / Timing Role: Four independent channels condition and compare analog sensor voltages against calibrated reference levels. Use Value: Rail-to-rail inputs capture full sensor dynamic range; 75 dB CMRR rejects power supply noise in battery-operated instruments. |
| Battery Voltage Supervisor | Fire Alarm Control Panel Input |
Use Scenario: Tracks lithium coin cell or alkaline battery voltage across multiple zones in wireless sensors. IC Role / Device Role / Timing Role: One comparator monitors VBAT; others monitor auxiliary rails (e.g., RF module, sensor bias) for brown-out detection. Use Value: 2.7–10 V supply range covers 1S LiPo (3.0–4.2 V) and 2xAA (1.8–3.2 V); 6 µA draw avoids loading weak batteries. | Use Scenario: Interfaces 4-wire smoke detector loops to central fire alarm control panels requiring fault/no-fault signaling. IC Role / Device Role / Timing Role: Each comparator validates loop continuity, open-circuit, short-circuit, and alarm-state voltage windows. Use Value: Class A latch-up immunity prevents system lockup during surge events on long building wiring runs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339MTX/NOPB | Open-collector outputs require external pull-ups; 100 µA/channel supply current at 5 V. | Higher power draw limits use in multi-year battery applications; unsuitable for direct MCU GPIO interface. | Select only if legacy design compatibility or cost sensitivity outweighs power and integration benefits. |
| TLV3704IPW | Lower 800 nA/channel current but 1.8–5.5 V supply range; no 10 V operation. | Cannot support 9 V battery or 10 V industrial rails; lacks Class A latch-up rating per datasheet. | Prefer for sub-5 V ultra-low-power IoT nodes where extended voltage range is unnecessary. |
Compared with LM339MTX/NOPB, TS864IPT reduces system power by 94% and eliminates 4 pull-up resistors; versus TLV3704IPW, it adds 10 V operation and industrial latch-up immunity at the cost of 100× higher quiescent current.
Availability
TS864IPT is available at Aetrix Electronics and suitable for battery-powered smoke detectors, portable gas analyzers, battery voltage supervisors, and fire alarm panel interfaces requiring stable component supply across extended product lifecycles.
Supply support for TS864IPT 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, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
The TS86x family was developed specifically for ultra-low-power, high-accuracy analog threshold detection in safety-critical portable and battery-operated systems - emphasizing rail-to-rail input, push-pull output, and robust ESD/latch-up performance.
FAQ
What is the maximum supply voltage for TS864IPT, and what happens above that limit?
The absolute maximum supply voltage is 12 V. Exceeding this risks permanent damage due to junction breakdown or oxide rupture. The device is characterized for reliable operation only up to 10 V, where parameters like propagation delay and offset voltage are guaranteed across temperature. Operation above 10 V voids parametric guarantees and may accelerate aging.
Can TS864IPT drive an LED directly without a current-limiting resistor?
No. While its push-pull output can source up to 5 mA at 5 V, driving an LED directly risks exceeding absolute maximum ratings due to uncontrolled current. A series current-limiting resistor is mandatory to ensure VOL ≤ 0.45 V and prevent output stage overstress. Typical design uses 1–10 kΩ depending on LED forward voltage and desired brightness.
Does TS864IPT support true rail-to-rail output swing, and how does that affect MCU interfacing?
Yes - its push-pull CMOS output achieves VOH ≥ 2.35 V and VOL ≤ 0.45 V at 2.7 V supply with 2.5 mA load, meeting 3.3 V logic high/low thresholds. This allows direct connection to most 3.3 V and 5 V microcontroller GPIO pins without level-shifting or pull-up resistors, simplifying interface design and reducing component count.
How does the 6 µA per comparator specification scale in quad configuration, and is there interaction between channels?
Total supply current is approximately 24 µA (4 × 6 µA) under no-load conditions at 2.7 V, confirmed in datasheet Table 3. Channel-to-channel crosstalk is not specified, but layout guidelines recommend separate ground traces and local decoupling to maintain 75 dB CMRR. No shared internal circuitry causes measurable interaction in normal operation.
TS864IPT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- Surface Mount
- :
- 14-TSSOP
TS864IPT FAQ
1.How can I place an order for TS864IPT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS864IPT 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 TS864IPT reliable?
The price and inventory of TS864IPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS864IPT is usually 5 days.
3.What payment methods are accepted for TS864IPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS864IPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS864IPT?
TS864IPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS864IPT 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 TS864IPT?
For technical support, including TS864IPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS864IPT requirements.
6.How does Aetrix verify that TS864IPT is sourced from the original manufacturer or authorized distributors?
All TS864IPT 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 TS864IPT meets industry standards.
7.What is the process for return or replacement of TS864IPT?
All TS864IPT units undergo pre-shipment inspection (PSI). If there is an issue with TS864IPT, 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 TS864IPT part is unused and in its original packaging.
Return procedure for TS864IPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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