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STMicroelectronics TS864IYDT
- Part No.:
- TS864IYDT
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS864IYDT.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,219
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Product details
Overview
TS864IYDT 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, delivering 500 ns propagation delay with 100 mV overdrive, and featuring push-pull outputs that eliminate external pull-up resistors-used in battery-powered smoke detectors and portable communication systems.
For engineers reviewing the TS864IYDT datasheet, TS864IYDT pinout, TS864IYDT application, or TS864IYDT equivalent, this page provides verified package mapping (TSSOP14), confirmed rail-to-rail input range (VCC − 0.3 V to VCC + 0.3 V), output drive capability (2.5 mA sink/source at 2.7 V), latch-up immunity (Class A), and ESD rating (2 kV HBM).
Technical Context
The TS864IYDT implements four independent high-speed comparators in a single TSSOP14 package, each with CMOS rail-to-rail inputs and push-pull CMOS outputs. Its BiCMOS process enables ultra-low quiescent current (6 µA/channel) while maintaining 500 ns response time at 2.7 V supply and 100 mV overdrive.
It operates across −40 °C to +85 °C with guaranteed input offset voltage ≤18 mV, common-mode rejection ratio ≥65 dB (at 2.7 V), and supply voltage rejection ratio ≥80 dB. The device requires no external biasing and supports direct interfacing with 3.3 V or 5 V microcontrollers due to logic-compatible output levels.
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 3.3 V/5 V rails without level-shifting. |
| Quiescent Current | 6 µA per comparator at 2.7 V - enables multi-year operation in coin-cell–powered detectors and alarms. |
| Propagation Delay | 500 ns at 2.7 V, 100 mV overdrive - ensures fast threshold detection for real-time smoke/gas sensing. |
| Input Offset Voltage | Max 18 mV over temperature - maintains accuracy in low-overdrive signal monitoring (e.g., thermistor or photodiode outputs). |
| Output Type | Push-pull CMOS - eliminates need for external pull-up resistors, reducing BOM count and board space in portable designs. |
| ESD Protection | 2 kV HBM - meets IEC 61000-4-2 Level 2 for robustness in handheld and field-deployed equipment. |
| Latch-up Immunity | Class A per JEDEC JESD78 - guarantees immunity to destructive latch-up under transient overvoltage conditions. |
Pinout & Package
TSSOP14 package: 4.9 mm × 6.4 mm × 1.05 mm body, 0.65 mm pitch, lead-free ECOPACK® compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input, Channel 1 | Differential input node referenced to internal rail-to-rail input stage; accepts signals from 0 V to VCC. |
| 2 | Non-inverting input, Channel 1 | Second differential input for Channel 1; matched offset and bias current with Pin 1. |
| 3 | Output, Channel 1 | Push-pull CMOS output driving high to VCC or low to GND; sinks/sources ≥2.5 mA at 2.7 V. |
| 4 | Inverting input, Channel 2 | Independent comparator input; electrically isolated from other channels with <1 pA bias current. |
| 5 | Non-inverting input, Channel 2 | Matched pair with Pin 4; enables dual-threshold or window-comparator configurations. |
| 6 | Output, Channel 2 | Logic-compatible output directly connectable to MCU GPIO without pull-up resistor. |
| 7 | VCC+ | Positive supply rail for all four comparators; decoupling capacitor required within 1 cm. |
| 8 | VCC− | Ground reference pin; separate from substrate connection to minimize noise coupling between channels. |
| 9 | Output, Channel 3 | Third independent output; identical drive strength and timing specs as Pins 3 and 6. |
| 10 | Inverting input, Channel 3 | Third comparator input; shares same BiCMOS input structure and offset drift (6 µV/°C). |
| 11 | Non-inverting input, Channel 3 | Paired with Pin 10; supports cascaded or redundant sensing architectures. |
| 12 | Inverting input, Channel 4 | Fourth independent input; fully characterized for −40 °C to +85 °C operation. |
| 13 | Non-inverting input, Channel 4 | Final input pair; enables quad-threshold monitoring (e.g., multi-zone fire detection). |
| 14 | Output, Channel 4 | Fourth push-pull output; tested for simultaneous switching without cross-talk degradation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail CMOS inputs | Supports input signals from 0 V to VCC, enabling direct interface with sensors operating near supply rails (e.g., battery voltage monitors). |
| Push-pull output stage | Eliminates external pull-up resistors, reducing component count and power loss in always-on battery systems. |
| 6 µA per comparator supply current | Enables >5-year operation on CR2032 coin cell in intermittent-sense applications (e.g., smoke detector standby mode). |
| 500 ns propagation delay at 2.7 V | Meets fast-response requirements for gas leak detection where sub-millisecond reaction is critical. |
| Latch-up immunity (Class A) | Guarantees no destructive latch-up during ESD events or supply transients, improving field reliability. |
Applications
| Smoke Detector Interface | Portable Gas Monitor |
|---|---|
|
Use Scenario: Detecting ionization chamber current drop indicating smoke presence in residential alarm units. IC Role / Device Role / Timing Role: Quad comparator compares chamber output against four precision thresholds to reject false triggers from humidity or dust. Use Value: Ultra-low 6 µA/channel current extends CR123A battery life to >10 years in standby; push-pull outputs drive alarm buzzer directly. |
Use Scenario: Monitoring electrochemical sensor output in handheld CO or NO₂ detectors. IC Role / Device Role / Timing Role: Four independent comparators track sensor baseline drift, temperature compensation, alarm thresholds, and fault detection simultaneously. Use Value: Rail-to-rail inputs accept full 0–3.3 V sensor swing; 500 ns delay ensures rapid alarm activation before hazardous exposure. |
| Battery Voltage Supervisor | Low-Power Communication Link |
|
Use Scenario: Monitoring Li-ion cell voltage in Bluetooth earbuds to prevent deep discharge and enable graceful shutdown. IC Role / Device Role / Timing Role: One comparator channel monitors VBAT against 2.8 V cutoff; others supervise charging status and thermal foldback. Use Value: Operates down to 2.7 V supply, matching minimum battery voltage; consumes <25 µA total for full quad supervision. |
Use Scenario: Signal conditioning for IR or sub-GHz RF receiver baseband in wireless sensor nodes. IC Role / Device Role / Timing Role: Compares demodulated analog envelope against adaptive thresholds to recover digital data without ADC. Use Value: 65 dB CMRR rejects supply noise from shared LDO; 80 dB SVRR maintains accuracy across battery discharge curve. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3704IPW | Higher supply current (800 nA typical vs. 6 µA), slower propagation delay (3 µs), but lower input offset (1.5 mV max). | Preferred in precision instrumentation where offset dominates; unsuitable for multi-year battery life targets. | Select TLV3704IPW only when offset <2 mV is mandatory and supply current >1 µA is acceptable. |
| LM339AWDT | Open-collector outputs require pull-up resistors; higher ICC (250 µA); wider supply range (2 V to 36 V). | Suitable for industrial 24 V systems but incompatible with direct MCU GPIO interface and ultra-low-power design. | Choose LM339AWDT only for high-voltage industrial monitoring where power budget exceeds 100 µA. |
Compared with TS864IYDT, TLV3704IPW trades 10× higher power for 10× better offset, while LM339AWDT sacrifices micropower operation and push-pull convenience for wide-supply ruggedness-making TS864IYDT optimal for compact, long-life, 3.3 V/5 V portable systems.
Availability
TS864IYDT is available at Aetrix Electronics and suitable for battery-powered smoke detectors, portable gas analyzers, low-power communication receivers, and coin-cell–operated environmental sensors requiring stable component supply across extended production lifecycles.
Supply support for TS864IYDT 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 developed specifically for ultra-low-power sensing and monitoring applications where micropower consumption, rail-to-rail input, and push-pull output are essential-targeting battery-operated safety and portable instrumentation systems.
FAQ
What is the maximum operating temperature for TS864IYDT?
The TS864IYDT is specified for continuous operation from −40 °C to +85 °C ambient temperature. Junction temperature must not exceed 150 °C, and thermal resistance junction-to-ambient in TSSOP14 is 100 °C/W. Derating is required above 70 °C ambient if power dissipation exceeds 15 mW.
Does TS864IYDT require external pull-up resistors on its outputs?
No. TS864IYDT features push-pull CMOS outputs capable of sourcing and sinking ≥2.5 mA at 2.7 V, allowing direct connection to microcontroller GPIO pins without external pull-up resistors-reducing component count and leakage paths in battery-critical designs.
Can TS864IYDT operate from a single 1.8 V supply?
No. TS864IYDT has a minimum supply voltage of 2.7 V per the absolute maximum ratings table and electrical characteristics tables. Operation below 2.7 V is not characterized, and functionality-including rail-to-rail input range and output swing-is not guaranteed.
Is TS864IYDT pin-compatible with other packages in the TS86x family?
No. TS864IYDT uses the TSSOP14 package (0.65 mm pitch), while TS864IDT uses SO-14 (1.27 mm pitch). Pin functions are identical across packages, but mechanical layout, pad dimensions, and solder profile differ-requiring separate PCB footprints and assembly validation.
TS864IYDT 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:
- Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 10V
- :
- -
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 16µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- 14-SO
TS864IYDT FAQ
1.How can I place an order for TS864IYDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS864IYDT 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 TS864IYDT reliable?
The price and inventory of TS864IYDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS864IYDT is usually 5 days.
3.What payment methods are accepted for TS864IYDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS864IYDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS864IYDT?
TS864IYDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS864IYDT 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 TS864IYDT?
For technical support, including TS864IYDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS864IYDT requirements.
6.How does Aetrix verify that TS864IYDT is sourced from the original manufacturer or authorized distributors?
All TS864IYDT 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 TS864IYDT meets industry standards.
7.What is the process for return or replacement of TS864IYDT?
All TS864IYDT units undergo pre-shipment inspection (PSI). If there is an issue with TS864IYDT, 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 TS864IYDT part is unused and in its original packaging.
Return procedure for TS864IYDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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