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STMicroelectronics TS864ID
- Part No.:
- TS864ID
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS864ID.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,539
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Product details
Overview
TS864ID 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 TS864ID datasheet, TS864ID pinout, TS864ID application, or TS864ID equivalent, key selection criteria include ultra-low supply current, latch-up immunity (Class A), ESD protection (2 kV HBM), common-mode input range extending to VCC ±0.3 V, and compatibility with direct microcontroller interfacing without pull-up resistors.
Technical Context
The TS864ID implements four independent comparators in a single SO-14 package, each with rail-to-rail CMOS input stages enabling full-supply-range sensing and push-pull output stages eliminating external pull-up components. Its BiCMOS process delivers high speed-to-power efficiency across -40 °C to +85 °C.
It achieves 500 ns response time at 2.7 V with 100 mV overdrive while maintaining low input offset voltage (3–18 mV), low input bias current (1–600 pA), and high large-signal gain (240 dB), supporting precision threshold detection in low-voltage, low-power embedded monitoring circuits.
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. |
| Supply current per comparator | 6 µA at 2.7 V - enables multi-year operation on coin cells in always-on sensor nodes. |
| Propagation delay | 500 ns at 100 mV overdrive, 2.7 V - ensures fast response for alarm triggering in fire/smoke detection. |
| Input offset voltage | 3–18 mV - enables accurate voltage window detection with <1% error at 1 V reference. |
| Common-mode input range | VCC − 0.3 V to VCC + 0.3 V - allows direct sensing of battery voltage or rail monitors without level-shifting. |
| Output type | Push-pull - drives GPIOs directly; eliminates pull-up resistors and associated leakage/battery drain. |
| ESD protection | 2 kV HBM - provides robustness against handling and board-level electrostatic events. |
| Latch-up immunity | Class A - guarantees no destructive latch-up under transient overvoltage or ESD stress. |
Pinout & Package
TS864ID is housed in a 14-lead SOIC (SO-14) package with standard 1.27 mm pitch, 8.55–8.75 mm body length, and 3.80–4.00 mm width - compliant with JEDEC MS-012 and RoHS/ECOPACK® requirements.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input, comparator 1 | Accepts reference or sensed signal; rail-to-rail CMOS input enables full-supply threshold setting. |
| 2 | Non-inverting input, comparator 1 | Accepts monitored signal; matched input structure ensures balanced offset and noise rejection. |
| 3 | Output, comparator 1 | Push-pull CMOS output drives MCU interrupt pin directly; sinks/supplies ≥2.5 mA at 2.7 V. |
| 4 | Inverting input, comparator 2 | Dedicated input for second independent comparison channel; electrically isolated from other channels. |
| 5 | Non-inverting input, comparator 2 | Enables dual-threshold or differential pair configuration without external buffering. |
| 6 | Output, comparator 2 | Independent logic-level output; compatible with 1.8 V–5 V digital interfaces. |
| 7 | VCC+ | Positive supply pin for all four comparators; decoupling capacitor required within 1 cm. |
| 8 | GND / VCC− | Ground reference for entire device; shared return path for all outputs and inputs. |
| 9 | Output, comparator 3 | Third independent output; supports triple-alarm or cascaded hysteresis configurations. |
| 10 | Inverting input, comparator 3 | Third channel input; identical electrical specs to pins 1 and 4. |
| 11 | Non-inverting input, comparator 3 | Supports simultaneous monitoring of three distinct analog thresholds. |
| 12 | Inverting input, comparator 4 | Fourth channel input; enables full quad-comparator functionality in compact SO-14 footprint. |
| 13 | Non-inverting input, comparator 4 | Allows independent configuration of four separate decision points in one IC. |
| 14 | Output, comparator 4 | Final output; enables system-level status aggregation (e.g., OR'ed fault signals). |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail CMOS inputs | Enables direct interface with battery voltage, sensor outputs, or DAC references spanning 0 V to VCC. |
| Push-pull outputs | Eliminates need for external pull-up resistors, reducing BOM count, PCB area, and standby current by >1 µA per channel. |
| 6 µA per comparator supply current | Permits integration into energy-harvesting or coin-cell-powered devices with >5-year shelf life. |
| 500 ns propagation delay at 100 mV overdrive | Meets real-time response requirements for smoke detector alarm escalation and portable equipment power sequencing. |
| Latch-up immunity (Class A) | Guarantees operational integrity during supply transients, hot-plug events, or ESD exposure without reset or damage. |
| 2 kV HBM ESD protection | Reduces need for external TVS diodes in handheld or field-deployable equipment, lowering system cost and complexity. |
Applications
| Smoke Detector Threshold Monitoring | Portable Communication Voltage Supervisor |
|---|---|
|
Use Scenario: Real-time comparison of ionization chamber current against dual thresholds to detect smoke density rise and trigger audible alarm. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous low/high threshold detection and hysteresis control - one channel for baseline drift compensation, three for alarm staging. Use Value: Ultra-low 6 µA/channel current extends AA battery life beyond 3 years; push-pull outputs drive piezo buzzer directly without external drivers. |
Use Scenario: Monitoring battery voltage, RF PA enable status, and UART signal integrity in Bluetooth headsets and walkie-talkies. IC Role / Device Role / Timing Role: Four independent comparators supervise VBAT, charger presence, antenna switch state, and data line activity - each with dedicated output. Use Value: Rail-to-rail inputs accurately sense 2.5–4.2 V Li-ion range; 500 ns delay ensures timely shutdown before brownout resets MCU. |
| Battery-Powered Security Alarm Panel | Gas Detector Analog Signal Conditioning |
|
Use Scenario: Detecting tamper switch closure, door sensor open/closed states, and low-battery warning in wireless home security sensors. IC Role / Device Role / Timing Role: Comparator 1–3 monitor three discrete mechanical switches; comparator 4 monitors VCC to initiate graceful shutdown at 2.8 V. Use Value: SO-14 package fits compact PCBs; Class A latch-up immunity prevents false alarms during ESD-prone installation or environmental surges. |
Use Scenario: Converting electrochemical sensor output (nA–µA) into digital fault signals for CO, methane, or NO₂ detection modules. IC Role / Device Role / Timing Role: One comparator detects zero-gas baseline; others compare against calibrated alarm thresholds with temperature-compensated references. Use Value: Input offset voltage ≤18 mV ensures <±0.5% full-scale accuracy; 65–75 dB CMRR rejects common-mode noise from heater drive circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Open-collector outputs, higher ICC (500 µA), wider supply range (2–36 V), no rail-to-rail inputs. | Requires external pull-ups; unsuitable for sub-3 V battery operation or direct MCU interfacing. | Select when high-voltage industrial sensing (>12 V) is needed and board space allows pull-up resistors. |
| TLV3704IPW | Rail-to-rail I/O, lower ICC (1 µA), slower propagation (3 µs), TSSOP-14 package only. | Better for ultra-low-power sleep modes but insufficient speed for fast alarm response. | Select when nanowatt operation dominates timing requirements, e.g., wake-on-event sensor hubs. |
Compared with TS864ID, LM339DR trades speed and input range for rugged high-voltage tolerance, while TLV3704IPW prioritizes quiescent current over response time - TS864ID uniquely balances 6 µA consumption, 500 ns speed, rail-to-rail inputs, and push-pull outputs in SO-14.
Availability
TS864ID is available at Aetrix Electronics and suitable for battery-powered security systems, portable gas detectors, smoke alarm panels, and low-power industrial sensor nodes requiring stable component supply across extended production lifecycles.
Supply support for TS864ID 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 developed specifically for ultra-low-power, high-accuracy threshold detection in portable and battery-critical applications - emphasizing micropower operation, rail-to-rail input capability, and robust output drive without external components.
FAQ
What is the maximum operating temperature range for TS864ID?
The TS864ID is specified for operation from -40 °C to +85 °C ambient temperature, validated across this range for all key parameters including input offset voltage, propagation delay, and supply current. Thermal resistance junction-to-ambient is 105 °C/W in SO-14, allowing safe operation at full load up to +85 °C with standard PCB copper pour.
Can TS864ID drive an LED directly?
No - TS864ID outputs are rated for ±2.5 mA at 2.7 V (VOH = 2.35 V, VOL = 0.45 V), insufficient to drive typical indicator LEDs requiring 5–20 mA. It can, however, directly drive MCU GPIO interrupt pins, logic gates, or low-input-current optocouplers without external components.
Does TS864ID require external hysteresis resistors?
TS864ID does not integrate internal hysteresis, so external positive feedback resistors are required to prevent oscillation when comparing slow-moving or noisy signals. Typical values are 100 kΩ–1 MΩ from output to non-inverting input, yielding 10–100 mV hysteresis depending on resistor ratio and supply voltage.
Is TS864ID pin-compatible with other TS86x variants?
Yes - TS864ID (quad) shares identical SO-14 pinout with TS864AID (improved offset version) and matches functional pin assignments of TS862ID (dual, SO-8) for channels 1 and 2, though channel count and package differ. Pin 1–3 and 4–6 retain consistent inverting/non-inverting/output mapping across the family.
TS864ID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- 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:
- Surface Mount
- :
- 14-SO
TS864ID FAQ
1.How can I place an order for TS864ID through Aetrix?
Please submit a Request for Quotation (RFQ) for TS864ID 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 TS864ID reliable?
The price and inventory of TS864ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS864ID is usually 5 days.
3.What payment methods are accepted for TS864ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS864ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS864ID?
TS864ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS864ID 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 TS864ID?
For technical support, including TS864ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS864ID requirements.
6.How does Aetrix verify that TS864ID is sourced from the original manufacturer or authorized distributors?
All TS864ID 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 TS864ID meets industry standards.
7.What is the process for return or replacement of TS864ID?
All TS864ID units undergo pre-shipment inspection (PSI). If there is an issue with TS864ID, 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 TS864ID part is unused and in its original packaging.
Return procedure for TS864ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS864ID Tags
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