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STMicroelectronics TS3704CD
- Part No.:
- TS3704CD
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS3704CD.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,663
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Product details
Overview
TS3704CD from STMicroelectronics is a micropower quad 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 precision level sensing circuits.
For engineers reviewing the TS3704CD datasheet, TS3704CD pinout, TS3704CD application, or TS3704CD equivalent, key selection considerations include rail-to-rail input common-mode range (0 V to VCC−1.5 V), absence of external pull-up requirement, low-offset performance (≤6.5 mV), and compatibility with LM339-based designs requiring reduced power and board space.
Technical Context
The TS3704CD integrates four independent CMOS comparators on a single die, each featuring high-impedance inputs (1012 Ω typ), differential input stage with matched transistors, and complementary output drivers enabling true push-pull switching without external components. Its input common-mode range includes ground, supporting single-supply operation down to 2.7 V.
Designed for ultra-low-power systems, it achieves 20× lower quiescent current than bipolar LM339 while maintaining comparable propagation delay (0.15–2 μs) and output drive capability (±4 mA). The device operates across industrial temperature range (−40°C to +125°C) and supports both SO14 and TSSOP14 packages with ECOPACK® lead-free compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply current | 9 μA typ per comparator - enables multi-year battery life in always-on sensor nodes. |
| Input bias current | 1 pA typ - preserves signal integrity in high-impedance source applications (e.g., photodiode, pH probe). |
| Input offset voltage | 6.5 mV max - sets minimum detectable voltage difference in precision threshold detection. |
| Response time | 0.15 μs min (tPHL, 40 mV overdrive) - supports fast edge-triggered wake-up in low-power microcontrollers. |
| Common-mode range | 0 V to VCC−1.5 V - allows direct interfacing with ground-referenced sensors and single-supply ADC references. |
| Output type | CMOS push-pull - eliminates need for external pull-up resistors, reducing BOM count and PCB area. |
| ESD rating | HBM 500 V - provides robustness against handling-induced transients in assembly environments. |
Pinout & Package
TS3704CD is supplied in SO14 (Plastic micropackage) with 14-pin surface-mount configuration. Pin numbering follows standard top-view DIP/SO orientation with pin 1 marked by notch or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output 1 | CMOS push-pull output of comparator 1 - drives logic-high or logic-low directly to MCU GPIO or LED driver. |
| 2 | Inverting Input 1 | Negative input of comparator 1 - accepts reference or feedback signal for threshold comparison. |
| 3 | Non-inverting Input 1 | Positive input of comparator 1 - connects to sensor output or variable voltage source. |
| 4 | Ground (VCC−) | Low-side supply rail - serves as return path for all comparators and defines 0 V reference. |
| 5 | Non-inverting Input 2 | Positive input of comparator 2 - enables dual-threshold monitoring (e.g., window comparator with external resistors). |
| 6 | Inverting Input 2 | Negative input of comparator 2 - configurable as second reference or inverted signal path. |
| 7 | Output 2 | CMOS push-pull output of comparator 2 - independent switching node for parallel decision logic. |
| 8 | VCC+ | Positive supply rail - powers all four comparators; supports 2.7–16 V operation. |
| 9 | Output 3 | CMOS push-pull output of comparator 3 - provides third independent logic-level output. |
| 10 | Inverting Input 3 | Negative input of comparator 3 - expands multi-channel monitoring capability (e.g., triple fault detection). |
| 11 | Non-inverting Input 3 | Positive input of comparator 3 - interfaces with third analog signal source. |
| 12 | Non-inverting Input 4 | Positive input of comparator 4 - completes quad-channel architecture for full-system status evaluation. |
| 13 | Inverting Input 4 | Negative input of comparator 4 - supports fourth independent threshold comparison. |
| 14 | Output 4 | CMOS push-pull output of comparator 4 - delivers final logic decision without external components. |
Key Features
| Feature | Design Value |
|---|---|
| Push-pull CMOS output | Eliminates external pull-up resistors, reducing component count and layout complexity in space-constrained designs. |
| 1 pA input bias current | Minimizes loading error on high-impedance sources such as piezoelectric sensors or electrochemical cells. |
| Rail-to-rail input common-mode range | Enables direct interface with ground-referenced signals and single-supply op-amp buffers without level-shifting. |
| 2.7–16 V wide supply range | Supports operation from coin-cell batteries (3 V) up to industrial 12 V rails without external regulation. |
| Pin-to-pin LM339 compatibility | Allows drop-in replacement in legacy designs while delivering 20× lower quiescent current and improved noise immunity. |
Applications
| Battery-Powered Smoke Detector | Industrial Temperature Monitor |
|---|---|
|
Use Scenario: Detecting smoke-induced photoelectric current changes in low-power IoT fire alarms. IC Role / Device Role / Timing Role: Quad comparator monitors multiple sensor thresholds (smoke density, battery voltage, ambient light) with independent outputs. Use Value: 9 μA per comparator extends CR123A battery life beyond 5 years in standby mode while maintaining fast 2 μs response to alarm conditions. |
Use Scenario: Monitoring thermistor voltage dividers across four zones in HVAC control panels. IC Role / Device Role / Timing Role: Each comparator compares zone-specific thermistor output against fixed reference voltages to trigger relay control. Use Value: Input common-mode range including ground allows direct connection to unbuffered thermistor networks without level-shifting circuitry. |
| Medical Glucose Meter | Automotive Battery Management |
|
Use Scenario: Detecting electrochemical reaction endpoints during blood glucose strip analysis. IC Role / Device Role / Timing Role: Compares amplified amperometric sensor output against calibrated thresholds to determine glucose concentration bands. Use Value: 1 pA input bias current prevents measurement drift caused by leakage across high-impedance enzyme electrodes. |
Use Scenario: Monitoring cell voltage imbalances in 12 V lead-acid battery banks for automotive start-stop systems. IC Role / Device Role / Timing Role: Four comparators independently flag overvoltage, undervoltage, and thermal fault conditions across battery terminals. Use Value: Wide 2.7–16 V supply range accommodates cranking transients (down to 6 V) and alternator surges (up to 15.5 V) without reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad voltage comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Bipolar input stage; 2 mA supply current per comparator; open-collector output requires external pull-up. | Higher power consumption limits use in battery-critical applications; slower response (1.3 μs min) but higher ESD tolerance (2 kV HBM). | Select when legacy design reuse or higher output sink current (16 mA) is required over micropower operation. |
| TLV3704IDR | CMOS input; 1 μA supply current per comparator; rail-to-rail input; 1.8–16 V supply range. | Lower quiescent current and wider low-voltage support, but only rated for −40°C to +85°C (not extended industrial). | Select for ultra-low-power portable devices where extended temperature range is not required. |
Compared with LM339DR and TLV3704IDR, TS3704CD uniquely balances micropower operation (9 μA), industrial temperature range (−40°C to +125°C), and pin compatibility with legacy bipolar comparators - making it optimal for retrofitting energy-sensitive industrial controls.
Availability
TS3704CD is available at Aetrix Electronics and suitable for battery-powered smoke detectors, industrial temperature monitors, medical glucose meters, and automotive battery management systems requiring stable component supply across long production lifecycles.
Supply support for TS3704CD 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.
The TS3704 belongs to ST's precision analog comparators product line, engineered specifically for ultra-low-power sensing and threshold-detection applications where supply current, input impedance, and single-supply flexibility are critical.
FAQ
Can TS3704CD operate from a 3.3 V supply?
Yes. TS3704CD supports single-supply operation from 2.7 V to 16 V, including standard 3.3 V rails. At 3.3 V, its input common-mode range extends from 0 V to 1.8 V, and output high level reaches ≥2.4 V with 4 mA load - compatible with 3.3 V logic families.
Does TS3704CD require external pull-up resistors on its outputs?
No. TS3704CD features CMOS push-pull outputs capable of sourcing and sinking up to ±4 mA, eliminating the need for external pull-up resistors. This reduces component count, PCB area, and potential noise coupling from resistor networks.
What is the maximum input differential voltage for TS3704CD?
The absolute maximum differential input voltage is ±18 V, as specified in Table 1 of the datasheet. However, normal operating differential voltage should remain within the common-mode range limits (0 V to VCC−1.5 V) to ensure reliable comparator function and avoid latch-up.
Is TS3704CD suitable for automotive applications?
TS3704CD is qualified for industrial temperature range (−40°C to +125°C) and meets AEC-Q100 stress test requirements for human-body-model ESD (500 V). While not formally automotive-grade certified, it is widely deployed in non-safety-critical automotive subsystems such as cabin climate control and battery monitoring.
TS3704CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 4
- 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):
- 80dB CMRR
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SO
TS3704CD FAQ
1.How can I place an order for TS3704CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TS3704CD 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 TS3704CD reliable?
The price and inventory of TS3704CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS3704CD is usually 5 days.
3.What payment methods are accepted for TS3704CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS3704CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS3704CD?
TS3704CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS3704CD 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 TS3704CD?
For technical support, including TS3704CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS3704CD requirements.
6.How does Aetrix verify that TS3704CD is sourced from the original manufacturer or authorized distributors?
All TS3704CD 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 TS3704CD meets industry standards.
7.What is the process for return or replacement of TS3704CD?
All TS3704CD units undergo pre-shipment inspection (PSI). If there is an issue with TS3704CD, 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 TS3704CD part is unused and in its original packaging.
Return procedure for TS3704CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS3704CD Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
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LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
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LM2901PWR
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LM2903DT
STMicroelectronics
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LM393DR
Texas Instruments
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LM239DR
Texas Instruments
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LM339APWR
Texas Instruments
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LM2903P
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-
LM393ADR
Texas Instruments
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NCX2200GMAZ
NXP Semiconductors
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