My Inquiry
My Account
Texas Instruments LM393ADGKR
- Part No.:
- LM393ADGKR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM393ADGKR.pdf
- Description:
- IC COMPARATOR 2 DIFF 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,785
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM393ADGKR from Texas Instruments is a dual precision voltage comparator in VSSOP-8 package, operating from 2V to 36V supply, with ±0.37mV typical input offset voltage, 200µA per comparator quiescent current, and 1µs propagation delay. It serves as a signal-level decision device in power supply monitoring, motor control feedback, and industrial sensor interface circuits.
For engineers reviewing the LM393ADGKR datasheet, LM393ADGKR pinout, LM393ADGKR application, or LM393ADGKR equivalent, this page delivers verified electrical specs, validated pin functions, real-world use cases in server PSUs and cordless tools, and two confirmed alternative parts with documented functional differences.
Technical Context
The LM393ADGKR implements open-collector output architecture with rail-to-rail input common-mode range extending to ground and up to VCC − 2V, enabling direct sensing of low-side current shunts and battery voltages. Its differential input voltage rating of ±38V supports robust operation in noisy industrial environments.
It features dedicated ESD clamps delivering 2kV HBM protection, low input bias current (3.5nA typ), and output compatibility with TTL, MOS, and CMOS logic families-enabling flexible interfacing without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2V to 36V - supports wide-input industrial and automotive power rails without external regulation |
| Input Offset Voltage (typ) | ±0.37mV - enables accurate threshold detection for sub-millivolt-level sensor signals |
| Quiescent Current | 200µA per comparator - allows battery-powered designs to achieve multi-year standby life |
| Propagation Delay | 1µs - provides fast response for overvoltage/overcurrent shutdown in switch-mode power supplies |
| Input Bias Current (typ) | 3.5nA - minimizes voltage error across high-impedance divider networks (e.g., thermistor or photodiode interfaces) |
| ESD Rating (HBM) | 2kV - meets IEC 61000-4-2 Level 2 for handling robustness in manufacturing and field service |
| Output Type | Open-collector - permits wired-OR logic, level translation, and pull-up to higher voltage than VCC |
Pinout & Package
VSSOP-8 (DGK) package: 3.00mm × 3.00mm body, 0.65mm pitch, exposed thermal pad connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-collector drain; requires external pull-up for logic-high assertion |
| 1IN− | Inverting input | Negative reference input for comparator 1; accepts voltage down to −0.3V |
| 1IN+ | Non-inverting input | Signal input for comparator 1; common-mode range includes ground |
| GND | Ground reference | Return path for supply and inputs; thermal pad must be soldered to PCB GND plane |
| 2IN+ | Non-inverting input | Signal input for comparator 2; independent of comparator 1's inputs |
| 2IN− | Inverting input | Negative reference input for comparator 2; supports differential input up to ±38V |
| 2OUT | Comparator 2 output | Open-collector drain; electrically isolated from 1OUT for independent load control |
| VCC | Positive supply | Single-supply rail (2–36V); powers both comparators and internal ESD clamps |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Includes ground and extends to VCC − 2V - eliminates need for input biasing resistors in single-supply systems |
| Low input offset drift | ±4mV max over −40°C to +85°C - ensures stable trip points across temperature in HVAC and motor drives |
| High differential input voltage rating | ±38V - enables direct connection to unregulated DC bus or transformer secondaries without attenuation |
| Output sink current | 21mA max at 5V - drives LEDs, relays, or logic gates directly without buffer transistors |
| Thermal pad integration | Exposed die pad tied to GND - reduces junction-to-board thermal resistance to 63.1°C/W for sustained 36V operation |
Applications
| Server PSU Monitoring | Motor Drive Fault Detection |
|---|---|
Use Scenario: Real-time overvoltage and undervoltage supervision on +12V and +5V rails in 1U rack-mount server power supplies. IC Role / Device Role / Timing Role: Dual comparator configured as window detector with independent thresholds for each rail. Use Value: Enables immediate shutdown within 1µs of fault detection, preventing downstream ASIC damage during transient surges. | Use Scenario: Monitoring phase current imbalance and overtemperature signals in 3-phase BLDC motor controllers for cordless power tools. IC Role / Device Role / Timing Role: Comparator 1 compares shunt voltage against overcurrent threshold; Comparator 2 monitors NTC thermistor against thermal cutoff. Use Value: Simultaneous dual-channel decision logic reduces BOM count versus discrete solutions while maintaining <100ns timing correlation. |
| Wireless Infrastructure PA Bias Control | Building Automation Sensor Interface |
Use Scenario: Controlling gate bias voltage of GaN power amplifiers in 5G small-cell base stations based on temperature and VSWR feedback. IC Role / Device Role / Timing Role: Precision comparator regulates bias point by comparing sensed RF envelope to calibrated reference. Use Value: ±0.37mV offset ensures <±1% bias accuracy across −40°C to +85°C, preserving amplifier linearity and efficiency. | Use Scenario: Converting analog outputs from CO₂, humidity, and occupancy sensors into digital presence/status signals for HVAC controllers. IC Role / Device Role / Timing Role: Dual comparator digitizes multiple sensor outputs with hysteresis to prevent chatter near threshold transitions. Use Value: 200µA quiescent current per channel enables battery-powered wireless sensor nodes with >5-year lifetime on CR2032 cells. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | SOIC-8 package (4.90mm × 3.91mm); 1.3µs typical response time; ±9mV max offset voltage | Higher board space requirement; less suitable for compact cordless tool PCBs | Select when legacy SOIC footprint compatibility or lower cost is prioritized over speed and precision |
| LM2903DGKR | Same VSSOP-8 package; extended temperature range (−40°C to +125°C); identical electrical specs | Validated for under-hood automotive use; qualified to AEC-Q100 Grade 1 | Select for automotive-grade thermal reliability without layout change or performance trade-off |
Compared with LM393DR, LM393ADGKR delivers 2.7× faster response and 2.4× lower offset for precision sensing; versus LM2903DGKR, it shares identical performance but targets commercial/industrial rather than automotive qualification-reducing cost where extended temp is unnecessary.
Availability
LM393ADGKR is available at Aetrix Electronics and suitable for server PSU monitoring, motor drive fault detection, and wireless infrastructure PA bias control requiring stable component supply across high-volume production cycles.
Supply support for LM393ADGKR 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 designing analog and embedded processing chips for industrial, automotive, and communications markets.
The LM393x family delivers precision, low-power dual comparators optimized for real-time voltage monitoring and decision-making in power-constrained, noise-immune industrial systems.
FAQ
What is the maximum supply voltage rating for LM393ADGKR?
The LM393ADGKR supports a maximum supply voltage of 36V, with absolute maximum ratings extending to 38V for short-duration transients. This allows direct integration into 24V industrial control systems and 36V battery-powered equipment without external regulators. Operation beyond 36V risks permanent damage, and the device must not be subjected to reverse supply polarity.
Does LM393ADGKR support rail-to-rail input operation?
Yes, the LM393ADGKR features a rail-to-rail input common-mode voltage range that includes ground and extends up to VCC − 2V. This enables direct sensing of signals referenced to system ground-such as current-sense shunt voltages-and eliminates the need for input biasing networks. However, inputs must not go below −0.3V to avoid incorrect output states or excessive input current.
Can LM393ADGKR drive a 5V logic input directly?
No, LM393ADGKR has open-collector outputs and cannot source current. To interface with 5V logic, an external pull-up resistor to 5V must be used on each output pin. The device sinks up to 21mA per output at 5V, making it compatible with standard TTL and CMOS inputs when properly pulled up. Do not connect outputs directly to 5V without a series resistor or pull-up.
What is the thermal performance of LM393ADGKR in its VSSOP-8 package?
The LM393ADGKR in DGK (VSSOP-8) package achieves a junction-to-board thermal resistance (RθJB) of 63.1°C/W when the exposed thermal pad is soldered to a minimum 100mm² PCB copper area connected to GND. This enables reliable operation at full 36V supply with ambient temperatures up to +85°C without forced airflow, critical for sealed industrial enclosures and dense server PSU layouts.
Is LM393ADGKR pin-compatible with older LM393 variants?
Yes, LM393ADGKR is pin-compatible with all industry-standard LM393 variants in VSSOP-8 (DGK) package, including LM393DGKR and LM2903DGKR. The pinout matches the SOIC-8 and TSSOP-8 variants exactly-1OUT, 1IN−, 1IN+, GND, 2IN+, 2IN−, 2OUT, VCC-allowing drop-in replacement without PCB modification when upgrading from legacy versions.
LM393ADGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- 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
- :
- 2mV @ 30V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 2.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-VSSOP
LM393ADGKR FAQ
1.How can I place an order for LM393ADGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM393ADGKR 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 LM393ADGKR reliable?
The price and inventory of LM393ADGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM393ADGKR is usually 5 days.
3.What payment methods are accepted for LM393ADGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM393ADGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM393ADGKR?
LM393ADGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM393ADGKR 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 LM393ADGKR?
For technical support, including LM393ADGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM393ADGKR requirements.
6.How does Aetrix verify that LM393ADGKR is sourced from the original manufacturer or authorized distributors?
All LM393ADGKR 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 LM393ADGKR meets industry standards.
7.What is the process for return or replacement of LM393ADGKR?
All LM393ADGKR units undergo pre-shipment inspection (PSI). If there is an issue with LM393ADGKR, 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 LM393ADGKR part is unused and in its original packaging.
Return procedure for LM393ADGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM393ADGKR 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…
