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STMicroelectronics TS3702ID
- Part No.:
- TS3702ID
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS3702ID.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,118
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Product details
Overview
TS3702ID from STMicroelectronics is a micropower dual CMOS voltage comparator with push-pull outputs, 9 μA typical supply current per comparator, 2.7–16 V single-supply operation, and 1 pA typical input bias current. It replaces bipolar LM393 in battery-powered sensor interfaces where low quiescent current and rail-to-rail input capability (down to GND) are critical.
For engineers reviewing the TS3702ID datasheet, TS3702ID pinout, TS3702ID application, or TS3702ID equivalent, key selection criteria include ultra-low ICC, input common-mode range including ground, push-pull output eliminating pull-up resistors, and compatibility with legacy LM393 PCB layouts.
Technical Context
The TS3702ID integrates two independent high-impedance comparators with CMOS input stages (10¹² Ω typical input impedance) and complementary push-pull output drivers. Its input stage supports common-mode voltages from GND to VCC–1.5 V, enabling direct sensing of signals referenced to ground in single-supply systems.
Each comparator delivers 2 μs typical response time at 5 mV overdrive with 50 pF load, while maintaining 80–82 dB common-mode rejection and 75–90 dB supply voltage rejection across operating conditions. The device operates over –40°C to +125°C and supports SO8 packaging with JEDEC-standard lead-free terminations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 9 μA typ per comparator - enables multi-year operation on coin-cell batteries in always-on monitoring circuits |
| Input Bias Current | 1 pA typ - permits high-impedance sensor interfacing (e.g., pH electrodes, photodiodes) without signal loading |
| Input Common-Mode Range | 0 V to VCC–1.5 V - allows direct comparison of ground-referenced signals without level-shifting circuitry |
| Output Type | CMOS push-pull - eliminates external pull-up resistors, reducing BOM count and board space vs. open-collector comparators |
| Response Time | 2 μs typ at 5 mV overdrive - supports fast threshold detection in motor stall or overvoltage protection loops |
| Offset Voltage | 5 mV max - ensures reliable switching at small differential inputs in precision window-detection applications |
| ESD Robustness | HBM 400 V, CDM 1.5 kV - withstands handling and assembly stresses in industrial manufacturing environments |
Pinout & Package
TS3702ID is supplied in an SO8 (Small Outline Integrated Circuit, 150 mil body width) plastic micropackage compliant with JEDEC MS-012, featuring gull-wing leads and lead-free second-level interconnect per ECOPACK® specifications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input 1 | High-impedance node for reference voltage or feedback signal in first comparator |
| 2 | Non-inverting Input 1 | High-impedance node for sensed signal in first comparator; accepts GND-referenced inputs |
| 3 | Output 1 | CMOS push-pull output driving logic-level loads directly; no pull-up required |
| 4 | V− (GND) | Power return terminal for single-supply operation; also serves as analog reference point |
| 5 | Non-inverting Input 2 | High-impedance node for second independent comparator's sensed signal |
| 6 | Inverting Input 2 | High-impedance node for second comparator's reference or feedback path |
| 7 | Output 2 | CMOS push-pull output with identical drive strength and logic polarity as Output 1 |
| 8 | V+ | Positive supply rail; supports 2.7–16 V single supply or ±1.35–±8 V dual supply |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 9 μA/comparator enables >10-year battery life in wireless sensor nodes with 200 mAh coin cells |
| Rail-to-rail input capability | Input common-mode range includes GND, allowing direct interface with 0–VCC sensors without level shifters |
| Push-pull CMOS outputs | Eliminates need for external pull-up resistors, saving PCB area and reducing component count by ≥2 per comparator |
| Pin- and function-compatible with LM393 | Enables drop-in replacement in existing designs without layout changes or firmware updates |
| Wide temperature range | –40°C to +125°C operation supports deployment in automotive under-hood and industrial control cabinets |
Applications
| Battery-Powered Sensor Interface | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Monitoring thermistor or photodiode output in a portable environmental logger powered by CR2032 cell. IC Role / Device Role / Timing Role: Dual comparator performs window detection on analog sensor voltage against upper/lower thresholds. Use Value: 9 μA total quiescent current extends battery life to 7+ years; push-pull outputs drive microcontroller GPIOs directly. | Use Scenario: Detecting DC bus overvoltage in a solar charge controller before MOSFET gate shutdown. IC Role / Device Role / Timing Role: One comparator monitors bus voltage against 15.5 V threshold; second provides hysteresis via feedback. Use Value: 2 μs response ensures shutdown within 5 μs of overvoltage event; input range to GND simplifies resistor divider design. |
| Industrial Threshold Detector | Low-Power Analog Front-End |
Use Scenario: Detecting presence/absence of 4–20 mA loop current in a process transmitter using shunt resistor. IC Role / Device Role / Timing Role: Comparator compares shunt voltage against 1.6 V and 0.4 V thresholds to identify fault states. Use Value: 1 pA input bias avoids error in high-value shunt networks; SO8 package fits compact DIN-rail modules. | Use Scenario: Signal conditioning stage in a wearable ECG monitor requiring minimal power draw. IC Role / Device Role / Timing Role: First comparator detects QRS complex amplitude; second validates baseline stability. Use Value: Input impedance >10¹² Ω prevents loading of high-Z electrode amplifiers; 82 dB CMRR rejects 50/60 Hz interference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual voltage comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Higher ICC (500 μA typ), open-collector output requiring pull-up, 25 nA input bias | Requires external pull-up; unsuitable for ultra-low-power designs but offers wider temp range (–40°C to +85°C standard) | Select when cost sensitivity outweighs power budget and PCB space constraints |
| TLV3702IDR | Lower ICC (1.3 μA typ), rail-to-rail input/output, 0.6 V min supply, but only 1.5 V max supply | Supports sub-2 V operation but incompatible with 12–16 V industrial supplies used with TS3702ID | Select for sub-2 V battery systems where TS3702ID's 2.7 V minimum is prohibitive |
Compared with LM393DR and TLV3702IDR, TS3702ID uniquely balances ultra-low power (9 μA), wide supply range (2.7–16 V), and GND-inclusive input range-making it optimal for industrial battery-backed systems needing long service life and robust voltage tolerance.
Availability
TS3702ID is available at Aetrix Electronics and suitable for battery-powered sensor interfaces, overvoltage protection circuits, and industrial threshold detectors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TS3702ID 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 silicon solutions for automotive, industrial, and consumer markets since 1987.
The TS3702 belongs to ST's precision analog comparators product line, engineered specifically for energy-constrained applications demanding nanopower operation, high input impedance, and seamless migration from legacy bipolar comparators.
FAQ
Can TS3702ID operate from a 2.5V supply?
No. The absolute minimum supply voltage is 2.7 V per datasheet Table 2. Operation below 2.7 V risks undefined output behavior and increased propagation delay. For 2.5 V systems, consider TLV3701/3702 series which specify down to 1.8 V operation.
Does TS3702ID require external pull-up resistors on its outputs?
No. TS3702ID features CMOS push-pull outputs capable of sourcing and sinking current (±4 mA), eliminating the need for external pull-up resistors required by open-collector comparators like LM393. This reduces component count and PCB area.
What is the maximum input voltage allowed when V+ = 12V?
Per Table 1, the maximum input voltage (Vi) is 18 V absolute maximum, but the functional common-mode range is 0 V to V+–1.5 V. So at V+ = 12 V, inputs must stay within 0–10.5 V to ensure guaranteed performance and avoid phase reversal.
Is TS3702ID pin-compatible with TS3702CD?
Yes. Both TS3702ID and TS3702CD use identical SO8 packages and share identical pin functions and electrical characteristics. The only difference is temperature grade: TS3702ID is rated for –40°C to +125°C, while TS3702CD is rated for 0°C to +70°C.
TS3702ID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- CMOS, Push-Pull
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 16V, ±1.35V ~ 8V
- :
- 5mV @ 10V
- Voltage - Input Offset (Max):
- 1pA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 25µA
- Current - Quiescent (Max):
- 82dB CMRR
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
TS3702ID FAQ
1.How can I place an order for TS3702ID through Aetrix?
Please submit a Request for Quotation (RFQ) for TS3702ID 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 TS3702ID reliable?
The price and inventory of TS3702ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS3702ID is usually 5 days.
3.What payment methods are accepted for TS3702ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS3702ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS3702ID?
TS3702ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS3702ID 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 TS3702ID?
For technical support, including TS3702ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS3702ID requirements.
6.How does Aetrix verify that TS3702ID is sourced from the original manufacturer or authorized distributors?
All TS3702ID 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 TS3702ID meets industry standards.
7.What is the process for return or replacement of TS3702ID?
All TS3702ID units undergo pre-shipment inspection (PSI). If there is an issue with TS3702ID, 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 TS3702ID part is unused and in its original packaging.
Return procedure for TS3702ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS3702ID Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
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LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
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LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP Semiconductors
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