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Texas Instruments LM3302N/NOPB
- Part No.:
- LM3302N/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
LM3302N/NOPB.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,330
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Product details
Overview
LM3302N/NOPB from Texas Instruments is a quad low-power, low-offset voltage comparator IC designed for single-supply operation in industrial and embedded signal-conditioning systems. It features ±3 mV max offset voltage, 0.8 mA supply current (independent of supply voltage), 2–28 VDC operating range, and input common-mode range extending to GND - enabling ground-referenced sensing in battery-powered or rail-to-rail-constrained designs.
For engineers reviewing the LM3302N/NOPB datasheet, LM3302N/NOPB pinout, LM3302N/NOPB application, or LM3302N/NOPB equivalent, this device is selected for precision threshold detection, analog-to-digital interfacing, and open-collector logic-level translation where low quiescent current, wide supply tolerance, and GND-sensing capability are critical.
Technical Context
The LM3302N/NOPB integrates four independent PNP-input comparators with uncommitted NPN open-collector outputs, supporting wired-OR configurations and level-shifting across logic families. Its bias network delivers supply-independent current draw over 2–28 VDC, and its input stage allows common-mode voltages down to −0.3 VDC (with clamping) while maintaining valid output states.
Each comparator exhibits 50–200 V/mV small-signal voltage gain, 300 ns large-signal response time (with TTL swing), and 250 mV saturation voltage at 4 mA sink - enabling fast, low-loss switching into TTL, CMOS, ECL, and MOS loads without external level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2–28 VDC single supply or ±1–±14 VDC dual supply - supports wide-input industrial rails and battery-backed systems. |
| Input Offset Voltage | ±3 mV maximum - enables accurate threshold detection within 3 mV error margin across temperature and supply. |
| Supply Current | 0.8 mA typical per device (all four comparators active) - stable across supply voltage, ideal for low-power portable designs. |
| Input Bias Current | 25 nA maximum - minimizes loading on high-impedance sensor or reference sources. |
| Output Saturation Voltage | 250 mV at 4 mA sink - ensures strong LOW-state drive into logic inputs while limiting power loss in pull-up networks. |
| Input Common-Mode Range | Includes GND (down to −0.3 VDC) - permits direct sensing of signals referenced to system ground without level-shifting. |
| Differential Input Voltage | Up to 28 VDC - allows inputs to exceed V+ without damage, simplifying overvoltage-tolerant front-end design. |
Pinout & Package
LM3302N/NOPB is housed in a 14-pin PDIP package (19.177 mm × 6.35 mm body size), suitable for through-hole prototyping and industrial PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 13, 14 | OUTPUT2 / OUTPUT1 / OUTPUT4 / OUTPUT3 | Open-collector NPN outputs - require external pull-up resistors; support wired-OR logic, level translation, and direct TTL/CMOS interfacing. |
| 3 | V+ | Positive supply input - accepts 2–28 VDC; powers all four comparators and internal bias network. |
| 4, 5, 6, 7, 8, 9, 10, 11 | INPUT1− / INPUT1+ / INPUT2− / INPUT2+ / INPUT3− / INPUT3+ / INPUT4− / INPUT4+ | Differential input pairs for each comparator - PNP-input stage enables GND-referenced operation and high input impedance. |
| 12 | GND | Ground reference - serves as return path for supply and input common-mode; required for proper biasing and output saturation. |
Key Features
| Feature | Design Value |
|---|---|
| Wide single-supply operation | 2–28 VDC range eliminates need for dual supplies in most industrial control and sensor interface applications. |
| Ground-sensing input stage | Input common-mode range includes GND (−0.3 VDC min), enabling direct monitoring of 0 V–referenced signals like thermocouples or shunt voltages. |
| Supply-independent current draw | 0.8 mA total quiescent current regardless of V+ magnitude - simplifies power budgeting in variable-voltage systems. |
| Open-collector output architecture | Four uncommitted collectors allow flexible pull-up selection (voltage, speed, load), wired-OR logic, and compatibility with mixed-voltage logic families. |
| Low input offset drift | ±3 mV max offset voltage with reduced drift over temperature - improves long-term accuracy in uncalibrated threshold detection. |
Applications
| Limit Comparator | Simple Analog-to-Digital Converter |
|---|---|
Use Scenario: Monitoring battery voltage against under-voltage lockout (UVLO) and over-voltage protection (OVP) thresholds in portable equipment. IC Role / Device Role: Quad comparator configured as window detector - two channels compare against high/low reference voltages; third channel enables hysteresis; fourth provides status flag. Use Value: Enables precise, low-power fault detection without microcontroller intervention, reducing system wake-up events and extending battery life. |
Use Scenario: Converting linear potentiometer or temperature sensor output into 2-bit digital state (e.g., low/medium/high/critical) for LED indicators or fan control. IC Role / Device Role: Four independent comparators act as successive threshold detectors - each compares analog input to a stepped reference ladder. Use Value: Delivers cost-effective, deterministic 2-bit quantization with no clock, ADC peripheral, or firmware overhead. |
| Pulse Generator | Zero-Crossing Detector |
Use Scenario: Generating fixed-width timing pulses from slow-moving analog waveforms (e.g., tachometer signals, pressure ramp triggers). IC Role / Device Role: One-shot multivibrator built using comparator + RC timing network - input edge triggers output pulse; feedback resets latch after delay. Use Value: Provides jitter-free, repeatable pulse generation with sub-microsecond response and no external oscillator dependency. |
Use Scenario: Detecting AC line zero crossings in TRIAC-based lighting or motor control systems powered from single-ended supplies. IC Role / Device Role: Inverting comparator with resistor divider biasing - input AC signal referenced to GND; output toggles at 0 V crossing. Use Value: Enables synchronous phase-angle control with minimal component count and guaranteed GND-referenced input operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | SOIC-14 package; identical electrical specs but rated for 0°C to 70°C (vs. LM3302N/NOPB's −40°C to 85°C); same 2–36 VDC supply range. | Preferred for commercial-grade surface-mount production; unsuitable for extended-temperature industrial environments. | Select LM339DR only when ambient temperature stays within 0–70°C and PCB space requires SOIC footprint. |
| LM2901DT | PDIP-14 package like LM3302N/NOPB; shares −40°C to 85°C rating but has higher 7 mV max offset voltage and 1.5 mA supply current. | Better suited for cost-sensitive, non-precision applications where offset and current budgets are relaxed. | Choose LM2901DT when absolute offset accuracy is secondary to procurement availability or legacy board compatibility. |
Compared with LM339DR and LM2901DT, LM3302N/NOPB uniquely balances extended temperature operation (−40°C to 85°C), low 0.8 mA supply current, and tight ±3 mV offset in a through-hole PDIP package - making it optimal for ruggedized, low-power industrial sensing where reliability and GND-referenced input capability are mandatory.
Availability
LM3302N/NOPB is available at Aetrix Electronics and suitable for industrial control panels, battery management systems, and embedded sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM3302N/NOPB 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision signal conditioning and power-efficient IC design.
The LM3302N/NOPB belongs to TI's legacy LMx39-N quad comparator product line, engineered for robust, low-cost threshold detection in industrial automation, power supplies, and sensor signal chains where reliability under wide supply and temperature variation is essential.
FAQ
What is the operating temperature range of the LM3302N/NOPB?
The LM3302N/NOPB is specified for operation from −40°C to +85°C. This extended industrial temperature range distinguishes it from the LM339 (0°C to 70°C) and LM239 (−25°C to 85°C), making LM3302N/NOPB suitable for deployment in harsh environments such as factory floor controllers, outdoor instrumentation, and automotive under-hood modules where thermal stability is critical.
Does the LM3302N/NOPB support single-supply operation with inputs at ground potential?
Yes, the LM3302N/NOPB supports true single-supply operation with input common-mode voltage range including GND (down to −0.3 VDC). This capability is enabled by its PNP-input stage and allows direct interfacing with ground-referenced sensors - such as current-sense amplifiers, thermistors, or battery terminals - without requiring level-shifting circuitry or negative supply rails.
What is the maximum supply voltage for the LM3302N/NOPB?
The absolute maximum supply voltage for the LM3302N/NOPB is 28 VDC for single-supply operation and ±14 VDC for dual-supply operation. This is lower than the 36 VDC limit of the LM339/LM239 family, reflecting its optimized design for lower-voltage industrial and battery-powered systems while retaining robustness against transient overvoltage conditions.
Can multiple LM3302N/NOPB outputs be connected together?
Yes, the LM3302N/NOPB features open-collector outputs that can be safely wired in parallel (wired-OR configuration) with a shared pull-up resistor. This enables logical combining of comparator outputs - for example, implementing window comparators, alarm OR-ing, or priority encoding - without risk of contention or excessive current draw, as each output only sinks current when active.
How does the supply current of the LM3302N/NOPB behave across its operating voltage range?
The LM3302N/NOPB draws a typical supply current of 0.8 mA (all four comparators active) that remains essentially constant from 2 VDC to 28 VDC. This supply-independent current draw simplifies power budgeting in systems with variable input voltage - such as unregulated wall adapters or aging batteries - and ensures predictable battery life in portable applications without requiring dynamic current compensation.
LM3302N/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- CMOS, DTL, ECL, MOS, Open-Collector, TTL
- Voltage - Supply, Single/Dual (±):
- 2V ~ 28V, ±1V ~ 14V
- :
- 20mV @ 28V
- Voltage - Input Offset (Max):
- 0.5µA @ 5V
- Current - Input Bias (Max):
- 16mA @ 5V
- Current - Output (Typ):
- 2.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Through Hole
- :
- 14-PDIP
LM3302N/NOPB FAQ
1.How can I place an order for LM3302N/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3302N/NOPB 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 LM3302N/NOPB reliable?
The price and inventory of LM3302N/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3302N/NOPB is usually 5 days.
3.What payment methods are accepted for LM3302N/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3302N/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3302N/NOPB?
LM3302N/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3302N/NOPB 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 LM3302N/NOPB?
For technical support, including LM3302N/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3302N/NOPB requirements.
6.How does Aetrix verify that LM3302N/NOPB is sourced from the original manufacturer or authorized distributors?
All LM3302N/NOPB 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 LM3302N/NOPB meets industry standards.
7.What is the process for return or replacement of LM3302N/NOPB?
All LM3302N/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM3302N/NOPB, 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 LM3302N/NOPB part is unused and in its original packaging.
Return procedure for LM3302N/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM3302N/NOPB 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
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