My Inquiry
My Account
STMicroelectronics TS3702CN
- Part No.:
- TS3702CN
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TS3702CN.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,734
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TS3702CN 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 monitoring circuits where low quiescent current and ground-sensing inputs are critical.
For engineers reviewing the TS3702CN datasheet, TS3702CN pinout, TS3702CN application, or TS3702CN equivalent, key selection criteria include input offset voltage (≤6.5 mV), response time (≤2.2 μs), rail-to-rail input common-mode range including GND, push-pull output eliminating external pull-ups, and DIP8 package compatibility with legacy LM393 layouts.
Technical Context
The TS3702CN integrates two independent high-impedance CMOS comparators sharing a common supply. Its input stage uses MOSFET differential pairs enabling 1 pA bias current and GND-inclusive common-mode range (0 V to VCC−1.5 V). The push-pull output stage drives logic-level loads directly without external resistors.
It operates across industrial temperature (0°C to +70°C) and supports both single (2.7–16 V) and split (±1.35 V to ±8 V) supplies. Common-mode rejection (80 dB) and supply voltage rejection (75 dB) ensure stable switching under noisy or varying rail conditions.
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 sensor interfaces (e.g., pH, photodiode) |
| Input offset voltage | 6.5 mV max - sets minimum detectable differential for precision threshold detection |
| Response time | 2.2 μs max (tPHL) - supports >300 kHz window-comparator sampling in power sequencing |
| Common-mode range | 0 V to VCC−1.5 V - allows direct sensing of signals referenced to ground (e.g., current-sense amps) |
| Output type | CMOS push-pull - eliminates external pull-up resistor, reducing BOM count and board space |
| ESD rating | 400 V HBM - meets basic handling robustness for non-automotive assembly environments |
Pinout & Package
TS3702CN is supplied in an 8-pin plastic DIP (Dual In-line Package) with 2.54 mm lead pitch, through-hole mounting, and JEDEC MS-001 compliant dimensions (9.8 mm × 6.35 mm × 3.3 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input 2 | Accepts reference or feedback signal for second comparator; supports GND-referenced inputs |
| 2 | Output 2 | CMOS push-pull output - sinks or sources up to 4 mA; no external pull-up needed |
| 3 | Non-inverting Input 2 | Accepts sensed signal for second comparator; high-impedance (1012 Ω) |
| 4 | VCC− (GND) | Negative supply terminal - serves as circuit ground in single-supply configurations |
| 5 | Inverting Input 1 | Reference input for first comparator; matched offset and bias with Pin 1 |
| 6 | Output 1 | CMOS push-pull output - electrically identical to Pin 2; compatible with TTL/CMOS logic |
| 7 | Non-inverting Input 1 | Sensed signal input for first comparator; same specs as Pin 3 |
| 8 | VCC+ | Positive supply terminal - supports 2.7–16 V; powers both comparators and outputs |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 9 μA/comparator enables use in energy-harvesting and coin-cell applications |
| GND-sensing input range | 0 V common-mode lower limit allows direct interfacing with shunt-based current monitors |
| Push-pull CMOS output | Eliminates external pull-up resistors, reducing component count and layout area by ~15% |
| LM393 pin/function compatibility | Drop-in replacement in existing DIP8 footprints without schematic or layout changes |
| High CMRR & SVRR | 80 dB CMRR and 75 dB SVRR maintain threshold accuracy in noisy industrial power rails |
Applications
| Battery Voltage Monitor | Overcurrent Protection Circuit |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during charging/discharging to trigger cutoff at 2.8 V and 4.2 V thresholds. IC Role / Device Role / Timing Role: Dual comparator configured as window detector; one channel for low-threshold, one for high-threshold. Use Value: 9 μA total quiescent current extends battery shelf life; GND-referenced inputs simplify direct cell connection without level-shifting. | Use Scenario: Detecting overcurrent in DC motor driver by comparing shunt voltage against 50 mV reference. IC Role / Device Role / Timing Role: Single comparator (one half) comparing amplified shunt voltage to fixed reference; fast 2.2 μs response prevents MOSFET thermal runaway. Use Value: 1 pA input bias avoids error from shunt resistor leakage; push-pull output directly drives gate driver enable pin. |
| Power Sequencing Controller | Smoke Detector Signal Conditioning |
Use Scenario: Ensuring correct startup order of FPGA core (1.2 V), I/O (3.3 V), and auxiliary (5 V) rails in embedded systems. IC Role / Device Role / Timing Role: Two independent comparators monitor each rail with dedicated references; outputs feed OR-gate logic for enable control. Use Value: Rail-to-rail input range allows direct sensing of all three voltages; 6.5 mV offset ensures reliable 1% threshold accuracy. | Use Scenario: Converting ionization chamber current (pA-level) into digital alarm signal when smoke reduces chamber conductivity. IC Role / Device Role / Timing Role: First comparator amplifies and compares chamber current via transimpedance stage; second validates reference stability. Use Value: 1 pA input bias prevents loading of ultra-high-impedance chamber node; 80 dB CMRR rejects EMI from alarm siren. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393N | Higher supply current (500 μA/comparator), open-collector output requiring pull-up, 2 mV higher typical offset | Compatible in DIP8 footprint but increases power draw and requires external resistor | Select when legacy stock exists and micropower is not required |
| TLV3702CDR | Lower supply current (5.5 μA), rail-to-rail output swing, SOIC-8 only, no DIP8 option | Superior performance but incompatible with through-hole assembly; requires PCB redesign | Select for new designs prioritizing lowest power and surface-mount manufacturing |
Compared with LM393N and TLV3702CDR, TS3702CN uniquely balances DIP8 compatibility, 9 μA consumption, and push-pull output-making it optimal for upgrading legacy through-hole systems without layout change or power penalty.
Availability
TS3702CN is available at Aetrix Electronics and suitable for battery voltage monitoring, overcurrent protection circuits, and power sequencing controllers requiring stable component supply and long-term DIP8 availability.
Supply support for TS3702CN 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, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
The TS3702 belongs to ST's precision analog comparators product line, engineered specifically for low-power, ground-sensing applications in portable and energy-constrained systems.
FAQ
Can TS3702CN operate from a 2.7 V single supply?
Yes. TS3702CN is fully specified from 2.7 V to 16 V on single supply, with guaranteed functionality including input common-mode range down to 0 V and output swing within 300 mV of rails at 2.7 V. Electrical characteristics tables confirm operation at VCC+ = 3 V with 9 μA supply current and 6.5 mV offset voltage.
Does TS3702CN require external pull-up resistors on its outputs?
No. TS3702CN features CMOS push-pull outputs capable of sourcing and sinking up to 4 mA. Unlike open-collector comparators such as LM393, it drives logic-high and logic-low states actively, eliminating the need for external pull-up resistors and associated board space and BOM cost.
Is TS3702CN pin-compatible with LM393 in DIP8 packages?
Yes. TS3702CN uses identical DIP8 pinout and functional mapping to LM393: Pins 1–3 and 5–7 serve matching comparator inputs and outputs, Pin 4 is GND, and Pin 8 is VCC+. This allows direct replacement in existing LM393 layouts without schematic or PCB modification.
What is the maximum operating temperature for TS3702CN?
The TS3702CN is rated for 0°C to +70°C ambient operating temperature, as defined in Table 2 of the datasheet. This commercial-grade temperature range is validated across all electrical parameters including supply current, offset voltage, and response time, and applies specifically to the CN suffix variant.
TS3702CN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- :
- 8-DIP
TS3702CN FAQ
1.How can I place an order for TS3702CN through Aetrix?
Please submit a Request for Quotation (RFQ) for TS3702CN 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 TS3702CN reliable?
The price and inventory of TS3702CN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS3702CN is usually 5 days.
3.What payment methods are accepted for TS3702CN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS3702CN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS3702CN?
TS3702CN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS3702CN 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 TS3702CN?
For technical support, including TS3702CN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS3702CN requirements.
6.How does Aetrix verify that TS3702CN is sourced from the original manufacturer or authorized distributors?
All TS3702CN 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 TS3702CN meets industry standards.
7.What is the process for return or replacement of TS3702CN?
All TS3702CN units undergo pre-shipment inspection (PSI). If there is an issue with TS3702CN, 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 TS3702CN part is unused and in its original packaging.
Return procedure for TS3702CN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS3702CN 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…
