My Inquiry
My Account
STMicroelectronics TS864IDT
- Part No.:
- TS864IDT
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS864IDT.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,565
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TS864IDT 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 at 100 mV overdrive. It delivers rail-to-rail CMOS inputs, ±12 V differential input voltage tolerance, and latch-up immunity (Class A), enabling direct microcontroller interfacing in ultra-low-power sensing nodes.
For engineers reviewing the TS864IDT datasheet, TS864IDT pinout, TS864IDT application, or TS864IDT equivalent, this device is selected for battery-powered smoke detectors, portable gas sensors, low-voltage alarm systems, and energy-harvesting edge nodes where supply current, input common-mode range, and output drive capability are critical selection criteria.
Technical Context
The TS864IDT integrates four independent comparators on a single die with fully rail-to-rail CMOS input stages, supporting common-mode voltages from VCC−0.3 V to VCC+0.3 V across its full 2.7–10 V supply range. Its push-pull output stage eliminates external pull-up resistors and supports 2.5 mA sink/source capability at 2.7 V.
It achieves 500 ns propagation delay (typ.) at 100 mV overdrive and 2.7 V supply, with input offset voltage of 3–18 mV (min–max) and drift of 6 µV/°C. ESD protection meets 2 kV HBM, and thermal resistance (RTHJA) is 105 °C/W in SO-14 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 10 V - enables operation directly from single Li-ion, two alkaline, or regulated 3.3/5 V rails without level-shifting. |
| Quiescent Current | 6 µA per comparator at 2.7 V - extends battery life in multi-year sensor deployments (e.g., smoke detector standby). |
| Propagation Delay | 500 ns (typ.) at 100 mV overdrive, 2.7 V - supports fast threshold detection in alarm triggering and analog event capture. |
| Input Offset Voltage | 3–18 mV (−40 °C to +85 °C) - ensures reliable detection margin for small-signal sensors (e.g., thermistor or gas cell outputs). |
| Output Type | Push-pull CMOS - drives microcontroller GPIOs directly; no external pull-up required, reducing BOM count and board area. |
| Common-Mode Input Range | VCC−0.3 V to VCC+0.3 V - accepts signals near supply rails, simplifying interface with resistive divider or op-amp output stages. |
| ESD Protection | 2 kV HBM - provides robustness against handling and system-level electrostatic discharge in portable end equipment. |
Pinout & Package
TS864IDT is supplied in SO-14 package (14-pin small outline integrated circuit), with body dimensions 8.55–8.75 mm × 3.80–4.00 mm × 1.35–1.75 mm (L × W × H), lead pitch 1.27 mm, and ECOPACK® RoHS-compliant finish.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input, comparator 1 | Accepts reference or sensed signal; rail-to-rail compatible down to VCC−0.3 V. |
| 2 | Non-inverting input, comparator 1 | Accepts sensor output or threshold-adjusted signal; supports full supply-rail common-mode range. |
| 3 | Output, comparator 1 | Push-pull CMOS output; sinks or sources up to 2.5 mA at 2.7 V, directly interfaces MCU I/O. |
| 4 | Inverting input, comparator 2 | Dedicated second channel input; electrically isolated from other comparators on same die. |
| 5 | Non-inverting input, comparator 2 | Independent high-impedance input (IIB ≤ 600 pA); minimizes loading on high-Z sensor sources. |
| 6 | VCC− (GND) | Ground reference for all four comparators; shared return path for quiescent and output currents. |
| 7 | Output, comparator 2 | Active-high/low logic-level output; compatible with 1.8 V, 3.3 V, and 5 V digital systems. |
| 8 | Output, comparator 3 | Third independent output; enables multi-threshold monitoring (e.g., low/normal/high gas concentration). |
| 9 | Inverting input, comparator 4 | Fourth channel inverting input; supports redundant or differential sensing configurations. |
| 10 | Non-inverting input, comparator 4 | Fourth channel non-inverting input; matched offset and bias performance to other channels. |
| 11 | Output, comparator 4 | Final output for quad configuration; allows simultaneous status reporting of four independent conditions. |
| 12 | VCC+ | Positive supply rail; powers all four comparators; decoupling capacitor recommended at pin. |
| 13 | Inverting input, comparator 3 | Third channel inverting input; layout symmetry supports matched trace routing for noise immunity. |
| 14 | Non-inverting input, comparator 3 | Third channel non-inverting input; identical electrical specs to pins 1, 4, and 9. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail CMOS inputs | Enables direct connection to sensors operating near ground or supply rails-no level-shifting circuitry needed. |
| Push-pull output stage | Eliminates external pull-up resistors, reduces component count, and improves rise/fall time consistency (20 ns typ.). |
| 6 µA per comparator quiescent current | Supports >10-year battery life in coin-cell–powered devices (e.g., CR2032 at 220 mAh, 4-channel active <1 µA avg). |
| 500 ns propagation delay @ 100 mV overdrive | Meets real-time response requirements for fire/smoke alarm escalation and fast fault detection in portable systems. |
| Latch-up immunity (Class A) | Guarantees robust operation under transient overvoltage or ESD events without destructive latch-up. |
Applications
| Smoke Detector Sensing Node | Portable Gas Analyzer Interface |
|---|---|
|
Use Scenario: Detecting ionization chamber current drop or optical scattering threshold crossing in battery-powered residential smoke alarms. IC Role / Device Role / Timing Role: Quad comparator monitors multiple thresholds (pre-alarm, alarm, fault) simultaneously using shared reference ladder and independent sensor inputs. Use Value: Ultra-low 6 µA/channel current extends CR123A battery life beyond 5 years in standby; push-pull outputs drive MCU wake-up pins directly. |
Use Scenario: Interfacing electrochemical gas sensor outputs (e.g., CO, NO₂) to an ultra-low-power microcontroller in handheld air quality meters. IC Role / Device Role / Timing Role: Compares amplified sensor voltage against calibrated trip points; rail-to-rail inputs accept sub-100 mV signals without amplification. Use Value: 3–18 mV input offset ensures stable detection at 50–200 ppm thresholds; 500 ns delay enables rapid alarm assertion upon toxic gas exposure. |
| Battery-Powered Security Alarm Panel | Low-Voltage Portable Computer Power Monitor |
|
Use Scenario: Monitoring door/window contact switches, PIR motion triggers, and tamper inputs in wireless security hubs powered by AA batteries. IC Role / Device Role / Timing Role: Four comparators condition discrete digital inputs with hysteresis (externally added), rejecting line noise and contact bounce. Use Value: 2 kV HBM ESD rating protects against field handling damage; SO-14 package allows compact 2-layer PCB layout with minimal decoupling. |
Use Scenario: Supervising multiple DC-DC converter outputs (3.3 V, 1.8 V, 1.2 V) and battery voltage in clamshell-style tablets or 2-in-1 laptops. IC Role / Device Role / Timing Role: Each comparator independently monitors undervoltage lockout (UVLO) and overvoltage (OVP) thresholds across power domains. Use Value: 2.7–10 V supply range covers both battery (3.0–4.2 V) and regulated rail monitoring; Class A latch-up immunity prevents system crash during brown-out recovery. |
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 supply current (250 µA/comparator), open-collector outputs requiring pull-ups, wider offset (±2 mV to ±30 mV), no rail-to-rail inputs. | Suitable for industrial 5 V/12 V systems where speed and power are secondary; not viable for sub-3 V or battery-critical designs. | Select LM339DR only when legacy compatibility or cost-per-unit dominates over power and interface simplicity. |
| TLV3704IPW | Lower quiescent current (1 µA/comparator), rail-to-rail inputs/outputs, but limited 2.7–16 V supply range and higher offset drift (10 µV/°C vs. 6 µV/°C). | Better for long-life coin-cell applications below 1 µA total, but less stable over temperature in wide-range environments (−40 °C to +85 °C). | Choose TLV3704IPW if absolute lowest power is mandatory and temperature stability is relaxed; otherwise TS864IDT offers superior offset stability and proven robustness. |
Compared with LM339DR and TLV3704IPW, TS864IDT uniquely balances ultra-low 6 µA/channel consumption, rail-to-rail input capability, push-pull output convenience, and −40 °C to +85 °C guaranteed performance-making it optimal for safety-critical, battery-constrained sensing where reliability and design simplicity are inseparable.
Availability
TS864IDT is available at Aetrix Electronics and suitable for battery-powered smoke detectors, portable gas analyzers, and low-voltage security alarm panels requiring stable component supply across extended production lifecycles.
Supply support for TS864IDT 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.
TS864IDT belongs to ST's precision analog comparators product line, engineered specifically for ultra-low-power sensing and battery-operated safety systems where accuracy, reliability, and minimal footprint are essential.
FAQ
What is the maximum operating temperature range for TS864IDT?
The TS864IDT is specified for operation from −40 °C to +85 °C ambient temperature, with guaranteed electrical performance across this full industrial range. Junction temperature must not exceed 150 °C, and thermal resistance (RTHJA) in SO-14 package is 105 °C/W, allowing safe operation at up to 75 °C ambient with 10 mW dissipation.
Can TS864IDT operate from a 1.8 V supply?
No. TS864IDT has a minimum supply voltage of 2.7 V, as confirmed by absolute maximum ratings (VCC = 12 V max) and operating conditions tables. At 1.8 V, internal BiCMOS circuitry cannot bias correctly, resulting in undefined output states and failure to meet propagation delay or offset specifications.
Does TS864IDT require external hysteresis for stable switching?
TS864IDT has no internal hysteresis. For noisy input signals (e.g., from unfiltered sensors), external positive feedback must be added to prevent oscillation at threshold crossings. Typical implementation uses a resistor network from output to non-inverting input, with hysteresis width calculable from R1/R2 ratio and output swing.
Is the SO-14 package of TS864IDT RoHS-compliant and halogen-free?
Yes. TS864IDT is offered in ECOPACK®-compliant SO-14 packaging, meeting RoHS Directive 2011/65/EU and halogen-free requirements per IEC 61249-2-21. The "ECOPACK" designation on ST's datasheet confirms compliance with ST's environmental standards for lead-free terminations and material content.
TS864IDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 14-SOIC (0.154", 3.90mm 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-SO
TS864IDT FAQ
1.How can I place an order for TS864IDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS864IDT 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 TS864IDT reliable?
The price and inventory of TS864IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS864IDT is usually 5 days.
3.What payment methods are accepted for TS864IDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS864IDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS864IDT?
TS864IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS864IDT 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 TS864IDT?
For technical support, including TS864IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS864IDT requirements.
6.How does Aetrix verify that TS864IDT is sourced from the original manufacturer or authorized distributors?
All TS864IDT 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 TS864IDT meets industry standards.
7.What is the process for return or replacement of TS864IDT?
All TS864IDT units undergo pre-shipment inspection (PSI). If there is an issue with TS864IDT, 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 TS864IDT part is unused and in its original packaging.
Return procedure for TS864IDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS864IDT Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP Semiconductors
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
