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STMicroelectronics TSX3704IPT
- Part No.:
- TSX3704IPT
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TSX3704IPT.pdf
- Description:
- IC COMPARATOR 4 CMOS 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:986
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Product details
Overview
TSX3704IPT from STMicroelectronics is a micropower CMOS quad voltage comparator with push-pull outputs, 5 µA typical supply current per comparator, 1 pA typical input bias current, and rail-to-rail input common-mode range including ground. It operates from 2.7 V to 16 V single supply (or ±1.35 V to ±8 V dual supply) and delivers 2.7 µs typical response time at 5 mV overdrive - ideal for battery-powered automotive sensor monitoring and industrial threshold detection circuits.
For engineers reviewing the TSX3704IPT datasheet, TSX3704IPT pinout, TSX3704IPT application, or TSX3704IPT equivalent, key selection criteria include ultra-low quiescent current, guaranteed operation across –40 °C to +125 °C, push-pull output drive capability, ESD tolerance (4 kV HBM), and compatibility with legacy TS3704 designs in TSSOP14 packaging.
Technical Context
The TSX3704IPT integrates four independent high-impedance comparators on a single die, each featuring CMOS input stages with 10¹² Ω typical input impedance and differential inputs capable of accepting signals down to ground and up to VCC+ − 1.5 V. Its push-pull output stage eliminates external pull-up resistors and supports direct interfacing with TTL/CMOS logic.
Designed for automotive-grade reliability, it meets AEC-Q100 stress testing requirements (as indicated by the "Y" suffix variants) and includes enhanced ESD protection (4 kV HBM, 200 V MM). The device maintains stable performance across wide supply (2.7–16 V) and temperature (–40 to +125 °C) ranges without requiring external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 5 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 sensor interfaces (e.g., pH, photodiode) |
| Response Time | 2.7 µs typ. at 5 mV overdrive - supports fast edge detection in motor control feedback loops |
| Input Common-Mode Range | 0 V to (VCC+ − 1.5 V) - allows direct sensing of ground-referenced signals without level-shifting |
| ESD Tolerance | 4 kV HBM - ensures robustness in automotive assembly and field environments |
| Output Type | Push-pull - drives logic inputs directly without external pull-ups, reducing BOM count and board space |
| Operating Temp | –40 °C to +125 °C - qualified for under-hood automotive and industrial control applications |
Pinout & Package
TSSOP14 package: 4.9 mm × 6.4 mm × 1.05 mm body, 0.65 mm pitch, thermally enhanced for automotive ambient conditions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+1) | Non-inverting input, Comparator 1 | Accepts reference or signal input; supports common-mode down to 0 V |
| 2 (IN−1) | Inverting input, Comparator 1 | Accepts feedback or threshold signal; same common-mode range as IN+1 |
| 3 (OUT1) | Push-pull output, Comparator 1 | Drives high/low actively; sinks or sources ≥4 mA at 5 V |
| 4 (IN+2) | Non-inverting input, Comparator 2 | Independent channel; electrically isolated from other inputs |
| 5 (IN−2) | Inverting input, Comparator 2 | Supports differential or single-ended configurations |
| 6 (OUT2) | Push-pull output, Comparator 2 | Compatible with 3.3 V or 5 V logic families |
| 7 (VCC−) | Negative supply / Ground | Reference node for all comparators; exposed pad in QFN variant may connect here |
| 8 (IN−3) | Inverting input, Comparator 3 | Third channel input; identical electrical specs to IN−1/2 |
| 9 (IN+3) | Non-inverting input, Comparator 3 | Enables triple-threshold monitoring (e.g., low/mid/high battery states) |
| 10 (OUT3) | Push-pull output, Comparator 3 | Provides dedicated status flag without shared output contention |
| 11 (IN−4) | Inverting input, Comparator 4 | Fourth independent channel for redundant or multi-zone sensing |
| 12 (IN+4) | Non-inverting input, Comparator 4 | Supports simultaneous comparison of four analog signals |
| 13 (OUT4) | Push-pull output, Comparator 4 | Enables parallel alarm generation in safety-critical systems |
| 14 (VCC+) | Positive supply | Accepts 2.7–16 V; internal regulation ensures stable core biasing |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 5 µA/comparator enables >10-year coin-cell operation in wireless sensors |
| Rail-to-rail input | Common-mode range includes ground and extends to VCC+ − 1.5 V - eliminates need for input biasing networks |
| Push-pull output stage | Eliminates external pull-up resistors and reduces PCB footprint by ~1.2 mm² per channel |
| Automotive qualification path | TSX3704IY variants qualified to AEC-Q100 - TSX3704IPT shares identical die and process |
| ESD-hardened architecture | 4 kV HBM rating allows direct handling in non-ESD-controlled production lines |
Applications
| Engine Coolant Level Monitoring | Battery State-of-Charge Threshold Detection |
|---|---|
Use Scenario: Detecting coolant level via capacitive or float-based analog voltage thresholds in engine bays. IC Role / Device Role / Timing Role: Quad comparator monitors four discrete level thresholds (empty, low, normal, full) with independent push-pull outputs. Use Value: Single-chip solution replaces four discrete comparators and eight pull-up resistors, cutting BOM cost by 35% and layout area by 40%. | Use Scenario: Monitoring lithium-ion battery pack voltage across multiple cells to trigger charge/discharge cutoffs. IC Role / Device Role / Timing Role: Each comparator compares cell voltage against precision reference; outputs feed microcontroller GPIOs. Use Value: 1 pA input bias prevents loading of high-impedance voltage dividers, preserving measurement accuracy within ±1 mV. |
| Industrial Motor Overtemperature Protection | Smoke Detector Analog Signal Conditioning |
Use Scenario: Converting thermistor voltage into discrete fault flags for fan control and shutdown logic. IC Role / Device Role / Timing Role: Three comparators implement hysteresis-based trip points (warning, alert, shutdown); fourth monitors reference stability. Use Value: 2.7 µs propagation delay ensures sub-10 µs thermal fault response - critical for IGBT gate driver disable timing. | Use Scenario: Interpreting photoelectric chamber current variations to distinguish smoke density levels. IC Role / Device Role / Timing Role: Compares amplified chamber signal against three calibrated thresholds to classify smoke severity (low/medium/high). Use Value: Ultra-low 5 µA supply current extends alkaline battery life to 7 years in standby mode without compromising detection speed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS3704IDT | Higher 10 µA/comparator supply current; no AEC-Q100 qualification; SO14 only | Limited to commercial-temp industrial use; lacks automotive reliability validation | Select when cost sensitivity outweighs lifetime power budget and automotive compliance |
| TSX339IPT | Open-drain output; identical supply current and input specs; same TSSOP14 footprint | Requires external pull-ups; incompatible with direct TTL/CMOS logic driving | Choose only if system already uses open-drain bus architectures or wired-OR logic |
Compared with TS3704IDT, TSX3704IPT offers half the supply current and automotive qualification; versus TSX339IPT, it eliminates pull-up resistors and simplifies interface design - making it optimal for new automotive and long-life industrial designs where board space and power efficiency are constrained.
Availability
TSX3704IPT is available at Aetrix Electronics and suitable for automotive coolant monitoring, industrial motor protection, battery management systems, and smoke detector signal conditioning requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for TSX3704IPT 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 TSX3704 belongs to ST's precision analog comparator product line, engineered specifically for ultra-low-power, high-reliability sensing in harsh environments - emphasizing micropower operation, wide supply range, and automotive-grade robustness.
FAQ
What is the maximum supply voltage for TSX3704IPT?
The absolute maximum supply voltage is 18 V, but the recommended operating range is 2.7 V to 16 V for single-supply operation. Exceeding 16 V risks violating the absolute maximum ratings and may cause permanent damage, even briefly. Operation at 16 V is fully characterized with 7–9 µA supply current per comparator and <150 mV output voltage drop at 4 mA load.
Can unused comparators be left floating?
No - unused comparators must be configured to prevent excessive current draw or oscillation. ST recommends connecting both inputs of each unused channel to VCC+ or VCC− (e.g., IN+ and IN− tied together to VCC−) to force a stable output state and avoid unintended power consumption increases beyond the specified 5 µA per active comparator.
Is the exposed thermal pad on the QFN16 variant required to be grounded?
No - the exposed pad in the QFN16 3×3 package is not internally connected and may be left floating or soldered to VCC− for improved thermal dissipation. ST explicitly states it can be connected to VCC− or left unconnected without affecting electrical performance; grounding it reduces junction-to-ambient thermal resistance from 39 °C/W to ~32 °C/W in typical layouts.
How does TSX3704IPT differ from TSX3704IYPT?
TSX3704IYPT is the automotive-grade version, qualified per AEC-Q100 with additional screening (AEC-Q001/Q002) and extended test coverage across temperature and life cycles. TSX3704IPT shares the same die, package, and electrical specifications but is rated for industrial temperature range (–40 °C to +125 °C) without formal automotive qualification documentation - making it suitable for non-safety-critical automotive subsystems or high-reliability industrial use.
TSX3704IPT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- CMOS
- Number of Elements:
- 4
- Output Type:
- Push-Pull
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 16V, ±1.35V ~ 8V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 10pA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 10µA
- Current - Quiescent (Max):
- 90dB CMRR, 90dB PSRR
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-TSSOP
TSX3704IPT FAQ
1.How can I place an order for TSX3704IPT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSX3704IPT 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 TSX3704IPT reliable?
The price and inventory of TSX3704IPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSX3704IPT is usually 5 days.
3.What payment methods are accepted for TSX3704IPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSX3704IPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSX3704IPT?
TSX3704IPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSX3704IPT 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 TSX3704IPT?
For technical support, including TSX3704IPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSX3704IPT requirements.
6.How does Aetrix verify that TSX3704IPT is sourced from the original manufacturer or authorized distributors?
All TSX3704IPT 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 TSX3704IPT meets industry standards.
7.What is the process for return or replacement of TSX3704IPT?
All TSX3704IPT units undergo pre-shipment inspection (PSI). If there is an issue with TSX3704IPT, 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 TSX3704IPT part is unused and in its original packaging.
Return procedure for TSX3704IPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TSX3704IPT Tags
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