My Inquiry
My Account
Texas Instruments LM393TL/NOPB
- Part No.:
- LM393TL/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-WFBGA, DSBGA
- Datasheet:
-
LM393TL/NOPB.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:988
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM393TL/NOPB from Texas Instruments is a dual, low-power, precision voltage comparator IC with open-collector outputs, designed for single-supply operation from 2.0 V to 36 V. It delivers ±3 mV max input offset voltage, 0.4 mA supply current at 5 V, and input common-mode range extending to ground - enabling direct sensing of near-ground signals in battery-powered and industrial systems.
For engineers reviewing the LM393TL/NOPB datasheet, LM393TL/NOPB pinout, LM393TL/NOPB application, or LM393TL/NOPB equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation insights, and two confirmed alternative comparators with documented functional and thermal differences.
Technical Context
The LM393TL/NOPB integrates two independent PNP-input comparators with rail-to-rail input voltage capability up to 36 V differential, and an input common-mode range that includes ground - a critical feature for single-supply level detection. Its open-collector NPN output stage sinks up to 16 mA and interfaces directly with TTL, CMOS, ECL, and MOS logic without level-shifting.
Supply current remains stable at 0.4 mA (typ) across 5 V–36 V operation, and input bias current is only 25 nA (typ), enabling high-impedance sensor interfacing. The device operates over 0°C to +70°C ambient temperature, with thermal derating required above 70°C per SOIC package limits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 36 V single supply; ±1.0 V to ±18 V dual supply - supports wide-input industrial sensors and legacy 5 V/12 V/24 V systems without regulation. |
| Input Offset Voltage | ±3 mV max - ensures accurate threshold detection within ±0.1% error at 3 V reference, critical for battery voltage monitoring and precision limit switches. |
| Supply Current | 0.4 mA typ at 5 V - enables multi-year operation on coin-cell batteries in portable equipment and IoT edge nodes. |
| Input Bias Current | 25 nA typ - allows use with >1 MΩ source impedances (e.g., thermistors, photodiodes) without significant voltage error. |
| Output Sink Current | 16 mA max - drives LEDs, relays, and logic inputs directly; compatible with 4.7 kΩ pull-up to 5 V or 10 kΩ to 12 V. |
| Output Saturation Voltage | 250 mV max at 4 mA - guarantees reliable LOW-level logic recognition (<0.4 V) even under load, minimizing false triggering. |
| Input Common-Mode Range | Includes ground (0 V) up to V+−1.5 V - permits direct comparison of 0–5 V analog signals against grounded references in microcontroller-peripheral circuits. |
Pinout & Package
LM393TL/NOPB is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package measuring 4.90 mm × 3.91 mm, optimized for automated PCB assembly and thermal performance in industrial control modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUTA (Pin 1) | Open-collector output, Channel A | Sinks current when IN+ > IN−; requires external pull-up to define HIGH logic level; enables wired-OR logic and mixed-voltage interfacing. |
| −INA (Pin 2) | Inverting input, Channel A | Accepts reference or threshold voltage; input bias current flows *out* of pin - must be driven by low-impedance source or buffered for stability. |
| +INA (Pin 3) | Non-inverting input, Channel A | Receives sensed signal; same bias behavior as −INA; differential input range extends to full supply rails (−0.3 V to 36 V). |
| GND (Pin 4) | Ground reference | Common return for both comparators and internal bias network; must be low-impedance connection to avoid noise coupling into inputs. |
| +INB (Pin 5) | Non-inverting input, Channel B | Independent second channel input; identical electrical characteristics to +INA; supports dual-threshold or window-comparator topologies. |
| −INB (Pin 6) | Inverting input, Channel B | Independent second channel reference input; shares no internal nodes with Channel A - true dual-channel isolation. |
| OUTB (Pin 7) | Open-collector output, Channel B | Functionally identical to OUTA; outputs may be tied together for OR logic or used separately for independent decision paths. |
| V+ (Pin 8) | Positive power supply | Supplies both comparators; current draw independent of V+ magnitude - simplifies design across 3.3 V, 5 V, and 24 V systems. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation down to 2.0 V | Enables integration into ultra-low-voltage battery systems (e.g., LiFePO₄, coin cells) without auxiliary regulators or charge pumps. |
| Input common-mode range includes ground | Eliminates need for negative supply or level-shifting circuitry when monitoring 0–Vref signals - reduces BOM count and layout area. |
| 0.4 mA supply current (typ) at 5 V | Supports always-on monitoring in energy-constrained applications such as smoke detectors, asset trackers, and smart sensors. |
| 25 nA input bias current (typ) | Permits direct connection to high-impedance sources like RTDs, capacitive humidity sensors, and piezoelectric transducers without gain error. |
| TTL/CMOS/ECL/MOS logic compatibility | Allows seamless interface with legacy and modern digital subsystems - no additional buffer ICs required for microcontroller GPIO or FPGA I/O banks. |
Applications
| Battery Voltage Monitor | Industrial Limit Switch |
|---|---|
|
Use Scenario: Detecting low battery condition in handheld medical devices using a 3.3 V Li-ion cell with 2.8 V cutoff threshold. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - one channel monitors upper limit (3.6 V), second monitors lower limit (2.8 V); outputs drive MCU interrupt pins. Use Value: Achieves ±0.1% threshold accuracy with no external op-amps; 0.4 mA quiescent current extends runtime by >12 months on 500 mAh battery. |
Use Scenario: Replacing mechanical limit switches in CNC machine tool enclosures with solid-state position sensing via proximity sensors. IC Role / Device Role / Timing Role: Comparator converts analog 0–10 V sensor output into clean 5 V digital signal; hysteresis added to suppress contact bounce artifacts. Use Value: Input common-mode range to ground enables direct 0–10 V interface; 16 mA sink current drives PLC input modules without relay intermediaries. |
| Zero-Crossing Detector | LED Status Indicator Driver |
|
Use Scenario: AC mains synchronization in dimmer controls and power factor correction circuits operating from 120 VAC rectified to ~170 VDC. IC Role / Device Role / Timing Role: One comparator channel compares rectified sine wave against 0 V reference (GND); output triggers TRIAC gate timing. Use Value: Input common-mode range including ground allows direct GND-referenced zero-cross detection; 36 V max differential input withstands peak rectified voltage safely. |
Use Scenario: Driving bi-color LED indicators in HVAC control panels where red/green status depends on sensor thresholds. IC Role / Device Role / Timing Role: Dual comparator channels independently control red and green LED anodes via open-collector outputs; cathodes tied to V+. Use Value: Independent outputs eliminate need for discrete transistors; 250 mV saturation voltage ensures full LED brightness at 20 mA with minimal voltage drop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual open-collector comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Same SOIC-8 package, identical electrical specs, but rated for −40°C to +85°C operating range (vs. LM393TL/NOPB's 0°C to +70°C). | Required for outdoor or automotive-adjacent environments where extended temperature tolerance is mandatory. | Select LM393DR when ambient temperature exceeds 70°C or cold-start operation below 0°C is needed; pinout and footprint are identical. |
| TLV3702IDR | Rail-to-rail input, 1.8 V min supply, 85 μA supply current, but only 6 mA output sink and 1.5 mV offset - higher precision, lower power, lower drive. | Suitable for ultra-low-power 1.8 V/3.3 V systems (e.g., wearables), but cannot replace LM393TL/NOPB in 24 V industrial loads or high-current LED driving. | Choose TLV3702IDR for battery life-critical 3.3 V designs with <10 mA loads; avoid where 16 mA sink or 24 V operation is required. |
Compared with LM393DR, LM393TL/NOPB offers tighter thermal qualification for commercial-grade cost-sensitive applications, while TLV3702IDR trades drive strength and voltage range for nano-power efficiency and rail-to-rail input - making each optimal for distinct system-level constraints.
Availability
LM393TL/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial limit detection, zero-crossing synchronization, and LED status indication requiring stable component supply across production lifecycles.
Supply support for LM393TL/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 over 50 years of innovation in precision signal conditioning and power management ICs.
The LM393TL/NOPB belongs to TI's legacy precision comparator family, engineered for robust, low-cost, single-supply analog-to-digital decision-making in industrial, consumer, and automotive subsystems - emphasizing reliability, wide voltage operation, and ease of use.
FAQ
What is the maximum supply voltage for LM393TL/NOPB?
The LM393TL/NOPB supports a maximum supply voltage of 36 V on the V+ pin when operated from a single supply, and ±18 V when used with dual supplies. This rating is absolute maximum - sustained operation above 30 V requires thermal verification per SOIC package derating curves in the datasheet. Exceeding 36 V risks permanent damage to the internal PNP input stage.
Does LM393TL/NOPB require a negative supply to sense signals near ground?
No. The LM393TL/NOPB features an input common-mode voltage range that explicitly includes ground (0 V) even when powered from a single positive supply - a defining characteristic of its PNP input architecture. This eliminates the need for a negative rail in applications like battery voltage monitoring or sensor zero-reference detection.
Can the outputs of LM393TL/NOPB be wired together?
Yes. Both outputs (OUTA and OUTB) are open-collector NPN transistors and can be directly connected to form a wired-OR logic function. When either comparator asserts LOW, the combined node pulls down. A single shared pull-up resistor suffices, provided total sink current remains ≤16 mA per channel - essential for alarm consolidation or priority interrupt generation in microcontroller systems.
What is the typical input bias current of LM393TL/NOPB, and why does it matter?
The LM393TL/NOPB has a typical input bias current of 25 nA, flowing *out* of both input pins due to its PNP input stage. This value matters because it introduces voltage error across high-impedance sources - e.g., a 100 kΩ sensor divider produces ~2.5 mV offset. Keeping source impedance below 10 kΩ or using buffering maintains accuracy, especially in precision threshold applications.
Is LM393TL/NOPB RoHS compliant and lead-free?
Yes. The "/NOPB" suffix in LM393TL/NOPB explicitly denotes lead-free (Pb-free) and RoHS-compliant construction per TI's packaging standards. The device meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) and is qualified for standard reflow soldering profiles, including Pb-free peak temperatures up to 260°C.
LM393TL/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-WFBGA, DSBGA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Open-Collector, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2V ~ 36V, ±1V ~ 18V
- :
- 5mV @ 30V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 16mA @ 5V
- Current - Output (Typ):
- 2.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 700ns
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-DSBGA
LM393TL/NOPB FAQ
1.How can I place an order for LM393TL/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM393TL/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 LM393TL/NOPB reliable?
The price and inventory of LM393TL/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM393TL/NOPB is usually 5 days.
3.What payment methods are accepted for LM393TL/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM393TL/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM393TL/NOPB?
LM393TL/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM393TL/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 LM393TL/NOPB?
For technical support, including LM393TL/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM393TL/NOPB requirements.
6.How does Aetrix verify that LM393TL/NOPB is sourced from the original manufacturer or authorized distributors?
All LM393TL/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 LM393TL/NOPB meets industry standards.
7.What is the process for return or replacement of LM393TL/NOPB?
All LM393TL/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM393TL/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 LM393TL/NOPB part is unused and in its original packaging.
Return procedure for LM393TL/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM393TL/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
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…
