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STMicroelectronics TS864AIDT
- Part No.:
- TS864AIDT
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS864AIDT.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,531
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Product details
Overview
TS864AIDT 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 and 500 ns propagation delay with 100 mV overdrive. It supports -40 °C to +85 °C operation and is housed in a SO-14 package, enabling direct microcontroller interfacing without pull-up resistors in battery-powered smoke detectors.
For engineers reviewing the TS864AIDT datasheet, TS864AIDT pinout, TS864AIDT application, or TS864AIDT equivalent, key selection criteria include ultra-low supply current, rail-to-rail input common-mode range (VCC − 0.3 V to VCC + 0.3 V), push-pull output drive capability (2.5 mA sink/source at 2.7 V), input offset voltage ≤10 mV, and latch-up immunity per Class A.
Technical Context
The TS864AIDT implements four independent high-precision comparators on a single BiCMOS die, each with rail-to-rail CMOS inputs and complementary push-pull output stages. Its architecture eliminates external pull-up requirements and maintains stable performance across 2.7–10 V supply and -40 °C to +85 °C ambient.
Input stage biasing ensures <300 pA input bias current and <150 pA input offset current, while large-signal voltage gain exceeds 240 dB and CMRR reaches 75 dB at 10 V supply. Propagation delay remains ≤0.5 µs under 100 mV overdrive across all supply voltages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 10 V - enables direct use with single-cell Li-ion, dual-cell alkaline, or 5 V/9 V industrial rails. |
| Quiescent Current | 6 µA per comparator at 2.7 V - extends battery life in multi-year portable sensor deployments. |
| Propagation Delay | 0.4 µs (TPHL) / 0.5 µs (TPLH) at 100 mV overdrive, VCC = 5 V - supports fast threshold detection in alarm triggering paths. |
| Input Offset Voltage | Max 10 mV (TS864A variant) - ensures reliable discrimination of small analog signals near rail boundaries. |
| Output Type | Push-pull CMOS - drives microcontroller GPIO directly without external pull-up, reducing BOM count and board area. |
| Common-Mode Input Range | VCC − 0.3 V to VCC + 0.3 V - accepts inputs down to ground and up to supply rail, simplifying sensor interface design. |
| ESD Protection | 2 kV HBM - provides robustness against handling and system-level electrostatic discharge events. |
Pinout & Package
TS864AIDT is supplied 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 body width. Thermal resistance junction-to-ambient is 105 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input, comparator 1 | Accepts reference or sensor signal for first comparator; rail-to-rail compatible. |
| 2 | Non-inverting input, comparator 1 | Accepts monitored signal; matched input impedance minimizes offset drift. |
| 3 | Output, comparator 1 | Push-pull CMOS output; sinks or sources up to 2.5 mA at 2.7 V. |
| 4 | Inverting input, comparator 2 | Dedicated input for second independent comparison channel. |
| 5 | Non-inverting input, comparator 2 | Independent high-impedance node for second sensor/reference path. |
| 6 | Output, comparator 2 | Active-high/low logic-level output compatible with 1.8 V–5 V MCU I/O. |
| 7 | VCC+ | Positive supply rail connection; decoupling capacitor required within 1 cm. |
| 8 | Output, comparator 3 | Third independent comparator output; identical electrical specs to pins 3 and 6. |
| 9 | Inverting input, comparator 3 | Third dedicated comparator input; no crosstalk with other channels. |
| 10 | Non-inverting input, comparator 3 | Third high-impedance input node; supports precision threshold setting. |
| 11 | Inverting input, comparator 4 | Fourth independent input; fully isolated from other comparator sections. |
| 12 | Non-inverting input, comparator 4 | Enables four-channel monitoring (e.g., multi-zone smoke detection). |
| 13 | Output, comparator 4 | Final logic-level output; supports daisy-chained interrupt or OR-gating. |
| 14 | VCC− | Ground reference; low-impedance return path essential for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Supports input signals from GND to VCC, eliminating level-shifting circuitry for sensors tied to supply rails. |
| Push-pull output architecture | Removes need for external pull-up resistors, reducing component count and PCB footprint in space-constrained designs. |
| 6 µA per comparator quiescent current | Enables >10-year battery life in coin-cell-powered devices operating at 1 Hz wake-up rate. |
| Class A latch-up immunity | Guarantees immunity to destructive latch-up under transient overvoltage or ESD stress per JEDEC JESD78. |
| 500 ns response time at 2.7 V | Meets real-time response requirements for fire/smoke alarm fast-trip thresholds per UL 217. |
Applications
| Smoke Detectors | Portable Gas Monitors |
|---|---|
Use Scenario: Continuous monitoring of ionization chamber or photoelectric sensor output in residential smoke alarms. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous threshold detection on multiple sensor channels and self-test signals. Use Value: Ultra-low 6 µA/channel current enables 10+ year battery life; push-pull outputs directly drive MCU interrupts without external components. | Use Scenario: Detection of toxic gas concentration via electrochemical sensor output in handheld safety instruments. IC Role / Device Role / Timing Role: Compares amplified sensor voltage against programmable thresholds for low/high alarm levels. Use Value: Rail-to-rail inputs accept full 0–VCC sensor swing; 0.5 µs propagation delay ensures sub-millisecond alarm response. |
| Battery-Powered Alarms | Industrial Portable Computers |
Use Scenario: Low-power perimeter intrusion detection using PIR or magnetic reed switch inputs. IC Role / Device Role / Timing Role: Four independent comparators monitor multiple zones or redundant sensor pairs for fault-tolerant operation. Use Value: SO-14 package allows compact layout; Class A latch-up immunity prevents field failures during power cycling. | Use Scenario: Real-time battery voltage monitoring and system power sequencing in ruggedized tablets. IC Role / Device Role / Timing Role: Monitors VBAT, charger status, and peripheral supply rails with precise hysteresis windows. Use Value: 10 mV max input offset ensures accurate 1% voltage threshold detection; 80 dB SVR rejects supply ripple interference. |
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 | Open-collector output, higher 2 mA ICC, wider 2–36 V supply range, no rail-to-rail inputs. | Requires external pull-ups; unsuitable for rail-to-rail sensor interfaces or ultra-low-power designs. | Select when cost sensitivity outweighs power/performance needs and open-drain bus sharing is required. |
| TLV3704IPW | Lower 1 µA ICC, rail-to-rail inputs/outputs, but 36 µs propagation delay and limited 2.7–16 V range. | Too slow for alarm-triggering paths requiring <1 µs response; better for low-speed supervisory functions. | Prefer for sub-µA standby systems where speed is non-critical and supply headroom is constrained. |
Compared with LM339DR and TLV3704IPW, TS864AIDT uniquely balances 6 µA quiescent current, 0.5 µs speed, rail-to-rail inputs, and push-pull outputs-making it optimal for battery-powered safety-critical detection where both energy efficiency and deterministic timing are mandatory.
Availability
TS864AIDT is available at Aetrix Electronics and suitable for smoke detectors, portable gas monitors, battery-powered alarms, and industrial portable computers requiring stable component supply across long production lifecycles.
Supply support for TS864AIDT 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-precision threshold detection in battery-operated safety and environmental monitoring systems, emphasizing rail-to-rail operation, latch-up immunity, and minimal propagation delay.
FAQ
What is the maximum operating temperature range for TS864AIDT?
The TS864AIDT is specified for continuous operation from -40 °C to +85 °C ambient temperature, validated across its full 2.7–10 V supply range. This rating is production-tested and guaranteed per JEDEC JESD22-A104, making it suitable for industrial and outdoor portable equipment environments.
Does TS864AIDT require external pull-up resistors on its outputs?
No. TS864AIDT features true push-pull CMOS outputs capable of sourcing and sinking up to 2.5 mA at 2.7 V. This eliminates the need for external pull-up resistors, reducing bill-of-materials cost and PCB area-particularly valuable in compact, battery-powered designs like smoke detectors.
How does the input offset voltage of TS864AIDT compare to the standard TS864 version?
The 'A' suffix in TS864AIDT denotes the improved accuracy grade: maximum input offset voltage is 10 mV (vs. 15 mV for TS864IDT) over the full -40 °C to +85 °C temperature range. This tighter specification enhances reliability in precision threshold detection applications such as gas concentration alarms.
Can TS864AIDT be used with a 1.8 V supply?
No. TS864AIDT has a minimum supply voltage of 2.7 V per absolute maximum ratings and electrical characteristics tables. Operation below 2.7 V is not characterized or guaranteed; attempting to power it at 1.8 V may result in undefined output states, increased propagation delay, or failure to meet rail-to-rail input specifications.
TS864AIDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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:
- Surface Mount
- :
- 14-SO
TS864AIDT FAQ
1.How can I place an order for TS864AIDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS864AIDT 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 TS864AIDT reliable?
The price and inventory of TS864AIDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS864AIDT is usually 5 days.
3.What payment methods are accepted for TS864AIDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS864AIDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS864AIDT?
TS864AIDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS864AIDT 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 TS864AIDT?
For technical support, including TS864AIDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS864AIDT requirements.
6.How does Aetrix verify that TS864AIDT is sourced from the original manufacturer or authorized distributors?
All TS864AIDT 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 TS864AIDT meets industry standards.
7.What is the process for return or replacement of TS864AIDT?
All TS864AIDT units undergo pre-shipment inspection (PSI). If there is an issue with TS864AIDT, 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 TS864AIDT part is unused and in its original packaging.
Return procedure for TS864AIDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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