My Inquiry
My Account
STMicroelectronics TS3702CD
- Part No.:
- TS3702CD
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS3702CD.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,447
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TS3702CD 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, 1 pA typical input bias current, and 2 μs typical response time at 5 mV overdrive - used in battery-powered sensor threshold detection and low-power analog monitoring circuits.
For engineers reviewing the TS3702CD datasheet, TS3702CD pinout, TS3702CD application, or TS3702CD equivalent, key selection criteria include ultra-low quiescent current, rail-to-rail input common-mode range including ground, push-pull output eliminating external pull-ups, and compatibility with LM393-based designs requiring reduced power and board space.
Technical Context
The TS3702CD integrates two independent high-impedance CMOS comparators sharing a common supply. Its input stage features MOSFET differential pairs enabling 1 pA bias current and 0 V to (VCC − 1.5 V) common-mode range - supporting ground-referenced sensing without level-shifting.
The push-pull output stage drives high/low actively (no open-collector dependency), delivering 4.3 V VOH and 300 mV VOL at 4 mA load under 5 V supply, while maintaining 2 μs propagation delay with 5 mV overdrive and 50 pF load - matching bipolar comparator speed with CMOS efficiency.
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. |
| Input Bias Current | 1 pA typ - preserves signal integrity in high-impedance sensor interfaces (e.g., photodiode, pH electrode). |
| Response Time | 2 μs typ at 5 mV overdrive - supports fast edge detection in low-power wake-up triggers. |
| Input Common-Mode Range | 0 V to VCC − 1.5 V - allows direct sensing of signals referenced to ground without biasing networks. |
| Output Type | CMOS push-pull - eliminates external pull-up resistors, reducing BOM count and PCB area vs. open-collector comparators. |
| Supply Voltage Range | 2.7 V to 16 V single supply - interoperates across 3.3 V microcontrollers and 12 V industrial rails. |
| Input Offset Voltage | 6.5 mV max - sets minimum detectable differential for precision thresholding in analog front-ends. |
Pinout & Package
TS3702CD is supplied in an SO8 (Small Outline 8-pin) plastic micropackage, compliant with JEDEC MS-012, with 1.27 mm lead pitch and surface-mount footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Comparator 1) | Accepts reference or sensed signal for first comparator's negative input node. |
| 2 | Non-inverting Input (Comparator 1) | Accepts variable input (e.g., sensor output) for first comparator's positive input node. |
| 3 | Output (Comparator 1) | CMOS push-pull output - drives logic-high or logic-low actively; no external pull-up needed. |
| 4 | VCC− (Ground / Negative Supply) | Reference return for both comparators; supports single-supply (0 V) or dual-supply (±1.35 V) operation. |
| 5 | Non-inverting Input (Comparator 2) | Variable input node for second comparator - enables dual-threshold or window-comparator configurations. |
| 6 | Inverting Input (Comparator 2) | Reference input node for second comparator - often tied to fixed voltage divider or DAC output. |
| 7 | Output (Comparator 2) | Independent CMOS push-pull output - supports concurrent decision-making without shared loading. |
| 8 | VCC+ (Positive Supply) | Primary power rail; supplies both comparators and output drivers across full 2.7–16 V range. |
Key Features
| Feature | Design Value |
|---|---|
| Push-pull CMOS output | Eliminates external pull-up resistors, reducing component count and layout complexity in space-constrained designs. |
| 9 μA/comparator supply current | Enables >10-year battery life in coin-cell-powered IoT endpoints with periodic wake-up and sensing. |
| Input common-mode range includes GND | Supports direct interfacing to ground-referenced sensors (e.g., thermistors, RTDs) without input biasing circuitry. |
| 1 pA input bias current | Minimizes voltage error in high-impedance feedback or sensing paths, critical for precision analog signal chains. |
| Pin-to-pin compatible with LM393 | Allows drop-in replacement in legacy designs to reduce power consumption without PCB redesign. |
Applications
| Battery-Powered Sensor Node | Industrial Threshold Monitor |
|---|---|
|
Use Scenario: A wireless temperature sensor uses a thermistor divider feeding TS3702CD to trigger wake-up when temperature exceeds preset limits. IC Role / Device Role / Timing Role: Dual comparator performs high/low window detection; one channel monitors upper limit, the other lower limit. Use Value: 9 μA total quiescent current extends CR2032 battery life beyond 5 years in sleep mode. |
Use Scenario: PLC analog input module detects overvoltage and undervoltage conditions on 0–10 V process signals. IC Role / Device Role / Timing Role: TS3702CD compares incoming signal against precision references to assert fault flags within 2 μs. Use Value: Rail-to-rail input range accepts full 0–10 V span without level-shifting; push-pull outputs drive optocouplers directly. |
| Portable Medical Device | Smart Energy Meter |
|
Use Scenario: Glucose meter uses electrochemical sensor with low-current output amplified and compared to calibration thresholds. IC Role / Device Role / Timing Role: Comparator detects end-point reaction completion by comparing amplified sensor current to reference voltage. Use Value: 1 pA input bias avoids loading high-impedance transimpedance amplifier output, preserving measurement accuracy. |
Use Scenario: Electricity meter monitors AC line voltage zero-crossing and overvoltage events using resistive divider inputs. IC Role / Device Role / Timing Role: One comparator detects zero-crossing for timing synchronization; the other flags >277 V overvoltage condition. Use Value: 2.7–16 V supply range accommodates internal 3.3 V LDO and auxiliary 12 V rail; SO8 package fits compact meter PCB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Bipolar input stage; 1 mA supply current per comparator; open-collector output requires pull-up resistor. | Higher power draw limits use in battery-critical systems; slower response (~1.5 μs min) but wider temp range (−40°C to +85°C). | Select when cost sensitivity outweighs power budget and pull-up resistors are already present in design. |
| TLV3702IDR | CMOS input; 1.3 μA supply current; rail-to-rail input; 1.8–16 V supply; smaller SOT-23-8 package. | Lower quiescent current and smaller footprint, but only rated to 125°C (vs. TS3702CD's 70°C industrial grade). | Select for ultra-low-power portable devices where extended temperature range is not required. |
Compared with LM393DR and TLV3702IDR, TS3702CD uniquely balances ultra-low 9 μA current, push-pull output convenience, and broad 2.7–16 V supply - making it optimal for industrial and medical equipment needing reliable, low-maintenance analog thresholding without design compromises.
Availability
TS3702CD is available at Aetrix Electronics and suitable for battery-powered sensor nodes, industrial threshold monitors, portable medical devices, and smart energy meters requiring stable component supply and long-term manufacturability.
Supply support for TS3702CD 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, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.
The TS3702 belongs to ST's precision analog comparators product line, engineered specifically for micropower, high-input-impedance applications where battery life, signal fidelity, and board-space efficiency are critical design constraints.
FAQ
Can TS3702CD operate from a single 3.3 V supply?
Yes. TS3702CD supports single-supply operation from 2.7 V to 16 V. At 3.3 V, it delivers 2.8 V VOH and 375 mV VOL under 4 mA load, with input common-mode range extending from 0 V to 1.8 V - sufficient for most 3.3 V system interfacing.
Does TS3702CD require external pull-up resistors on its outputs?
No. TS3702CD features true CMOS push-pull outputs capable of actively driving both logic high and logic low. Unlike open-collector comparators (e.g., LM393), it eliminates the need for external pull-up resistors, simplifying schematic design and saving PCB area.
What is the maximum input differential voltage the TS3702CD can tolerate?
The absolute maximum differential input voltage (VID) is ±18 V. This rating applies between the non-inverting and inverting inputs regardless of supply voltage - allowing safe operation during transient overvoltage events or mismatched input signals.
Is TS3702CD suitable for automotive applications?
TS3702CD is specified for 0°C to +70°C operation (TS3702C grade) and is not qualified to AEC-Q100. For automotive use, ST offers the TS3702I variant (−40°C to +125°C), which shares identical electrical characteristics and pinout but meets extended temperature and qualification requirements.
TS3702CD 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:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
TS3702CD FAQ
1.How can I place an order for TS3702CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TS3702CD 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 TS3702CD reliable?
The price and inventory of TS3702CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS3702CD is usually 5 days.
3.What payment methods are accepted for TS3702CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS3702CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS3702CD?
TS3702CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS3702CD 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 TS3702CD?
For technical support, including TS3702CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS3702CD requirements.
6.How does Aetrix verify that TS3702CD is sourced from the original manufacturer or authorized distributors?
All TS3702CD 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 TS3702CD meets industry standards.
7.What is the process for return or replacement of TS3702CD?
All TS3702CD units undergo pre-shipment inspection (PSI). If there is an issue with TS3702CD, 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 TS3702CD part is unused and in its original packaging.
Return procedure for TS3702CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS3702CD 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…
