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STMicroelectronics TSX3702IPT
- Part No.:
- TSX3702IPT
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TSX3702IPT.pdf
- Description:
- IC COMPARATOR 2 CMOS 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:9,350
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Product details
Overview
TSX3702IPT from STMicroelectronics is a micropower CMOS dual voltage comparator with push-pull outputs, designed for automotive and industrial systems requiring ultra-low quiescent current (5 µA per comparator), rail-to-rail input common-mode range including ground, and high ESD tolerance (4 kV HBM). It operates from 2.7 V to 16 V single supply and delivers 2.7 µs typical response time at 5 mV overdrive.
For engineers reviewing the TSX3702IPT datasheet, TSX3702IPT pinout, TSX3702IPT application, or TSX3702IPT equivalent, key selection criteria include input bias current (1 pA typ.), output drive capability (4 mA sink/source), wide temperature range (−40 °C to +125 °C), and compatibility with TS3702-based designs in TSSOP8 packaging.
Technical Context
The TSX3702IPT integrates two independent comparators with CMOS input stages enabling 10¹² Ω typical input impedance and input voltages up to 16 V regardless of VCC+, supported by internal ESD clamps. Its architecture prevents phase reversal and supports operation with one input driven above VCC+ while the other remains within 0 V to VCC+ − 1.5 V.
It features fully differential input pairs referenced to separate VCC+ and VCC− pins (pins 4 and 5), enabling true dual-supply operation (±1.35 V to ±8 V) or single-supply use with ground-referenced inputs. Output stages are complementary push-pull, eliminating need for external pull-ups and ensuring defined logic levels under load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 2.7 V to 16 V single supply or ±1.35 V to ±8 V dual supply - supports battery-powered and industrial 12 V/15 V rails without level-shifting. |
| Input bias current | 1 pA typ. - enables high-impedance sensor interfacing (e.g., photodiodes, pH electrodes) without signal loading. |
| Response time | 2.7 µs typ. at 5 mV overdrive - sufficient for precision window detection and slow-speed control loops (e.g., thermal trip, battery charge state). |
| Input offset voltage | ±5 mV max at 25 °C - ensures accurate threshold detection in low-voltage analog monitoring (e.g., 3.3 V system brown-out). |
| ESD tolerance | 4 kV HBM - meets automotive module-level robustness requirements per AEC-Q100 stress testing. |
| Operating temperature | −40 °C to +125 °C - qualified for under-hood automotive and industrial motor control environments. |
| Output type | Push-pull - drives logic inputs directly without external resistors; sinks/supplies 4 mA at <600 mV drop (VCC = 3 V). |
Pinout & Package
TSSOP8 package (3.0 mm × 4.4 mm × 1.05 mm height), lead-free and RoHS-compliant, optimized for space-constrained PCB layouts in automotive ECUs and industrial sensors.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Comparator 1 output | Push-pull active-high/active-low output; compatible with TTL/CMOS logic thresholds across full supply range. |
| 2 (IN1−) | Comparator 1 inverting input | Differential input node with 1 pA bias current; accepts voltages from −0.3 V to 16 V independent of VCC+. |
| 3 (IN1+) | Comparator 1 non-inverting input | Matches IN1− characteristics; common-mode range includes ground - enables direct connection to 0 V referenced sensors. |
| 4 (VCC−) | Negative supply / ground reference | Return path for dual-supply operation; tied to GND in single-supply configs - defines lower rail for input/output swing. |
| 5 (VCC+) | Positive supply | Primary power rail; supports 2.7–16 V - allows direct interface with 3.3 V, 5 V, and 12 V subsystems. |
| 6 (IN2+) | Comparator 2 non-inverting input | Independent of COMP1; identical electrical specs - enables dual-threshold detection (e.g., over/under-voltage windows). |
| 7 (IN2−) | Comparator 2 inverting input | Matches IN2+; supports same extended input voltage range - permits asymmetric reference configurations. |
| 8 (OUT2) | Comparator 2 output | Electrically isolated from OUT1; drives separate loads - eliminates crosstalk in safety-critical dual-channel monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 5 µA per comparator at 25 °C - extends battery life in always-on vehicle modules (e.g., door latch status, seat occupancy). |
| Rail-to-rail input range | 0 V to VCC+ − 1.5 V with ground inclusion - simplifies design of low-side current sensing and voltage monitoring without op-amp buffers. |
| High ESD immunity | 4 kV HBM - reduces field failure risk in assembly lines and end-user handling of automotive control units. |
| Phase reversal prevention | Guaranteed behavior beyond common-mode limits - avoids false triggering when inputs exceed VCC+ during transient events. |
| Automotive qualification | AEC-Q100 Grade 1 compliant (−40 °C to +125 °C) - certified for engine control, body electronics, and ADAS sensor interfaces. |
Applications
| Engine Coolant Temperature Monitoring | Battery Voltage Supervisor |
|---|---|
Use Scenario: Detect coolant temperature thresholds (e.g., >110 °C overheat, <5 °C freeze) using NTC thermistor divider. IC Role / Device Role / Timing Role: Dual comparator implements hysteresis window with independent upper/lower trip points. Use Value: 1 pA input bias avoids thermistor self-heating error; 5 µA quiescent current minimizes parasitic drain on 12 V vehicle battery. |
Use Scenario: Monitor 12 V lead-acid battery for undervoltage (<11.5 V) and overvoltage (>14.8 V) during charging cycles. IC Role / Device Role / Timing Role: One comparator detects low voltage, second detects high voltage - both referenced to precision bandgap. Use Value: Push-pull outputs drive microcontroller GPIOs directly; −40 °C to +125 °C rating ensures reliability in under-hood mounting. |
| Industrial Motor Overcurrent Protection | Smart Sensor Signal Conditioning |
Use Scenario: Compare shunt voltage against programmable thresholds to trigger shutdown before IGBT damage. IC Role / Device Role / Timing Role: High-speed comparator (2.7 µs response) detects fault conditions faster than MCU polling loop. Use Value: Input voltage range up to 16 V accommodates shunt placed on high-side of 12 V motor driver; no level-shifter needed. |
Use Scenario: Interface MEMS pressure sensor output to microcontroller ADC, providing wake-up interrupt on pressure excursion. IC Role / Device Role / Timing Role: Comparator acts as analog event detector - wakes MCU from sleep mode only when threshold crossed. Use Value: 5 µA supply current enables years of operation on coin-cell battery; 10¹² Ω input impedance preserves sensor signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS3702IPT | Higher ICC (10 µA typ. per comparator), wider VIO (±10 mV), lower ESD (2 kV HBM) | Legacy pin-compatible replacement; lacks extended input voltage range beyond VCC+ | Select when cost sensitivity outweighs need for lowest power or highest robustness. |
| TSX393IPT | Open-drain outputs, identical supply/temperature specs, same 1 pA IIB | Requires external pull-up; suited for wired-OR bus signaling or level translation | Choose when interfacing to mixed-voltage systems (e.g., 3.3 V MCU monitoring 5 V rail). |
Compared with TS3702IPT and TSX393IPT, the TSX3702IPT uniquely combines micropower consumption, push-pull drive, and extended input voltage tolerance - making it optimal for self-contained, low-power automotive and industrial monitoring nodes where board space and BOM count are constrained.
Availability
TSX3702IPT is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor protection circuits, and battery management systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TSX3702IPT 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 TSX3702 belongs to ST's precision analog comparator product line, engineered specifically for low-power, high-reliability sensing in harsh environments - emphasizing ESD robustness, wide supply flexibility, and AEC-Q100 compliance.
FAQ
What is the maximum input voltage the TSX3702IPT can tolerate relative to VCC+?
The TSX3702IPT accepts input voltages from −0.3 V to 16 V regardless of VCC+ value. When VIN exceeds VCC+, leakage through internal ESD diodes is limited to 250 nA at 125 °C. This enables direct interface with sensors operating at higher potentials than the comparator's supply rail - critical for high-side current sensing and legacy system integration.
Does the TSX3702IPT require external pull-up resistors on its outputs?
No. The TSX3702IPT features push-pull output stages capable of actively driving both logic HIGH and LOW states. Each output can source or sink up to 4 mA while maintaining VOL ≤ 400 mV and VOH ≥ VCC+ − 400 mV (at VCC = 5 V), eliminating need for external pull-ups and reducing component count in space-sensitive designs.
How does the TSX3702IPT differ from the TSX393IPT in system-level implementation?
The TSX393IPT uses open-drain outputs requiring external pull-up resistors, whereas the TSX3702IPT uses push-pull outputs. This makes the TSX3702IPT preferable for driving CMOS inputs directly or implementing fast edge-triggered interrupts, while the TSX393IPT is better suited for wired-OR configurations or level translation between different voltage domains.
Is the TSX3702IPT pin-compatible with the TS3702IPT in TSSOP8 packages?
Yes. The TSX3702IPT and TS3702IPT share identical TSSOP8 pinouts, footprints, and functional pin assignments. Migration requires no PCB redesign - only firmware or schematic updates to account for improved specifications: lower supply current (5 µA vs. 10 µA), tighter offset voltage (±5 mV vs. ±10 mV), and enhanced ESD rating (4 kV vs. 2 kV HBM).
TSX3702IPT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- CMOS
- Number of Elements:
- 2
- Output Type:
- Push-Pull
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 16V, ±1.35V ~ 8V
- :
- 5mV
- Voltage - Input Offset (Max):
- 10pA
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 8µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-TSSOP
TSX3702IPT FAQ
1.How can I place an order for TSX3702IPT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSX3702IPT 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 TSX3702IPT reliable?
The price and inventory of TSX3702IPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSX3702IPT is usually 5 days.
3.What payment methods are accepted for TSX3702IPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSX3702IPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSX3702IPT?
TSX3702IPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSX3702IPT 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 TSX3702IPT?
For technical support, including TSX3702IPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSX3702IPT requirements.
6.How does Aetrix verify that TSX3702IPT is sourced from the original manufacturer or authorized distributors?
All TSX3702IPT 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 TSX3702IPT meets industry standards.
7.What is the process for return or replacement of TSX3702IPT?
All TSX3702IPT units undergo pre-shipment inspection (PSI). If there is an issue with TSX3702IPT, 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 TSX3702IPT part is unused and in its original packaging.
Return procedure for TSX3702IPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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