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Texas Instruments LM393BIDGKR
- Part No.:
- LM393BIDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM393BIDGKR.pdf
- Description:
- IC COMPARATOR 2 DIFF 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:13,063
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Product details
Overview
LM393BIDGKR from Texas Instruments is a dual precision voltage comparator in VSSOP-8 package, featuring 0.37 mV typical input offset voltage, 200 µA per comparator supply current, 1 µs propagation delay, and ±38 V differential input voltage range. It operates from 2 V to 36 V single supply and is used in server PSU overvoltage protection circuits.
For engineers reviewing the LM393BIDGKR datasheet, LM393BIDGKR pinout, LM393BIDGKR application, or LM393BIDGKR equivalent, key selection criteria include input offset drift over temperature, open-collector output drive capability, common-mode input range extending to ground, and compatibility with TTL/MOS/CMOS logic interfaces.
Technical Context
The LM393BIDGKR implements two independent comparators with rail-to-rail input common-mode range down to ground and differential input tolerance up to ±38 V. Its internal ESD clamps provide 2 kV HBM robustness without external protection.
Quiescent current remains stable across 2–36 V supply and −40°C to +85°C ambient, enabling use in wide-input industrial power monitoring. Output stage is open-collector, requiring external pull-up for logic-level translation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports direct connection to 24 V industrial rails and 36 V battery systems without regulation |
| Input Offset Voltage (max) | ±4 mV over temperature - ensures reliable threshold detection in precision level-shifting applications |
| Propagation Delay (typ) | 1 µs at 5 V supply - enables fast response in overcurrent fault detection loops |
| Input Bias Current (typ) | 3.5 nA - minimizes loading on high-impedance sensor inputs like thermistor dividers |
| Output Sink Current | 21 mA - drives standard LED indicators or MOSFET gate resistors directly |
| ESD Rating (HBM) | 2000 V - meets IEC 61000-4-2 Level 2 for board-level handling without additional protection |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded control environments |
Pinout & Package
VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm pitch, exposed thermal pad connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-collector output requiring external pull-up; sinks up to 21 mA |
| 1IN− | Inverting input | Differential input node; accepts voltages from GND to VCC − 2 V |
| 1IN+ | Non-inverting input | Differential input node; same voltage range as 1IN− |
| GND | Ground reference | Common return for supply, inputs, and thermal pad connection |
| 2IN+ | Non-inverting input | Independent second comparator input; identical specs to 1IN+ |
| 2IN− | Inverting input | Independent second comparator input; identical specs to 1IN− |
| 2OUT | Comparator 2 output | Open-collector output, electrically isolated from 1OUT |
| VCC | Positive supply | Single-supply input supporting up to 36 V; powers both comparators |
Key Features
| Feature | Design Value |
|---|---|
| Drop-in replacement for LM393/LM293 | Pin-compatible with legacy SOIC-8 and VSSOP-8 footprints; no PCB redesign required |
| Extended common-mode range | Inputs operate down to GND and up to VCC − 2 V - enables direct sensing of 0 V referenced signals |
| Low quiescent current | 600 µA max at 36 V - reduces standby power in always-on monitoring circuits |
| Fast propagation delay | 1 µs typ at 5 V - improves response time in real-time fault detection systems |
| Rugged input structure | Dedicated ESD clamps and ±38 V differential rating - withstands transient coupling in noisy power environments |
Applications
| Server PSU Monitoring | Industrial Motor Control |
|---|---|
Use Scenario: Real-time overvoltage and undervoltage detection on 12 V and 48 V DC rails in redundant server power supplies. IC Role / Device Role / Timing Role: Dual comparator compares sensed rail voltage against precision reference thresholds; outputs drive fault latches or microcontroller interrupts. Use Value: 0.37 mV offset and 1 µs response enable accurate, fast trip points meeting IEC 62368-1 safety margins. | Use Scenario: Phase current zero-crossing detection and overcurrent flag generation in BLDC motor inverters. IC Role / Device Role / Timing Role: Compares shunt voltage against programmable thresholds; open-collector outputs interface directly with isolation gate drivers. Use Value: Input bias current ≤3.5 nA prevents measurement error in µΩ-range shunt sensing; 36 V rating accommodates bus transients. |
| Building Automation Sensors | Cordless Power Tool Battery Management |
Use Scenario: Threshold-based occupancy detection using PIR sensor outputs and ambient light level comparison in HVAC controllers. IC Role / Device Role / Timing Role: Dual comparator processes analog sensor outputs to generate digital presence/light-state signals for MCU GPIO. Use Value: Rail-to-ground input range allows direct connection to unbuffered PIR amplifiers; low 200 µA/comparator current extends battery life in wireless nodes. | Use Scenario: Cell voltage balancing enable/disable and pack overvoltage cutoff in 10S Li-ion battery packs for drills and saws. IC Role / Device Role / Timing Role: Monitors individual cell voltages via resistor dividers; triggers discharge FETs or shuts down charging path on violation. Use Value: ±38 V differential input handles full-pack voltage swings; −40°C to +85°C rating ensures operation in outdoor tool environments. |
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 | SOIC-8 package; higher 1.3 µs propagation delay; ±9 mV max offset; 1 mA supply current | Less suitable for high-speed fault detection; requires larger PCB area | Preferred where cost and legacy footprint are prioritized over speed and precision |
| TLV3702IDGKR | Rail-to-rail input/output; 360 µA supply current; 350 ns propagation delay; 1.25 mV offset; 5.5 V max supply | Not compatible with >5.5 V rails; superior speed and precision but limited voltage range | Best for low-voltage, high-accuracy applications where 36 V operation is unnecessary |
Compared with LM393DR and TLV3702IDGKR, the LM393BIDGKR uniquely balances 36 V operation, sub-millivolt offset, and VSSOP space savings-making it optimal for compact, wide-input industrial monitoring where legacy drop-in compatibility matters.
Availability
LM393BIDGKR is available at Aetrix Electronics and suitable for server PSU monitoring, industrial motor control, and building automation sensors requiring stable component supply and long-term industrial lifecycle support.
Supply support for LM393BIDGKR 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 delivering analog and embedded processing solutions for industrial, automotive, and communications markets.
The LM393B series belongs to TI's precision comparator product line, engineered for high-voltage industrial sensing, power supply supervision, and robust signal conditioning in harsh environments.
FAQ
What is the maximum supply voltage rating for LM393BIDGKR?
The LM393BIDGKR supports a maximum supply voltage of 36 V, verified per Absolute Maximum Ratings in the official datasheet (SLCS005AH, Section 5.1). This exceeds legacy LM393 variants (30 V), enabling direct use in 24 V and 36 V industrial power rails without input attenuation or regulation. Operation beyond 36 V risks permanent damage.
Does LM393BIDGKR support input voltages below ground?
No, the LM393BIDGKR does not support input voltages below ground. Per Section 5.5, the absolute minimum input voltage is –0.3 V - exceeding this causes incorrect output states and excessive input current. The common-mode range starts at GND (V–) and extends to VCC – 2 V, making it ideal for single-supply ground-referenced sensing but unsuitable for bipolar signal conditioning.
Can LM393BIDGKR outputs drive a 5 V logic input directly?
Yes, LM393BIDGKR outputs can drive a 5 V logic input when configured with an external pull-up resistor to 5 V. As an open-collector device, its output sinks current to GND and floats high when inactive. With a 5 V pull-up, the high state reaches ~5 V, satisfying TTL and CMOS logic thresholds. No level-shifting circuitry is needed for 5 V systems.
What is the thermal pad connection requirement for LM393BIDGKR?
The exposed thermal pad on the LM393BIDGKR (VSSOP-8 DGK package) must be connected directly to the GND net on the PCB. Per Figure 4-2 and datasheet notes, this connection is mandatory for thermal performance and electrical stability. Failure to solder the pad to GND may cause overheating, parameter drift, or functional failure under sustained load.
How does the input offset voltage of LM393BIDGKR vary with temperature?
The LM393BIDGKR exhibits ±4 mV maximum input offset voltage across its full operating range of −40°C to +85°C, as specified in Section 5.5. At 25°C, typical offset is ±0.37 mV. Figure 5-8 shows minimal drift - less than ±0.5 mV variation from 25°C to 85°C at 5 V supply - ensuring stable threshold accuracy in temperature-varying industrial enclosures.
LM393BIDGKR 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
- :
- 2.5mV @ 36V
- Voltage - Input Offset (Max):
- 0.025µA @ 5V
- Current - Input Bias (Max):
- 21mA @ 5V
- Current - Output (Typ):
- 600µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 1µs (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-VSSOP
LM393BIDGKR FAQ
1.How can I place an order for LM393BIDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM393BIDGKR 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 LM393BIDGKR reliable?
The price and inventory of LM393BIDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM393BIDGKR is usually 5 days.
3.What payment methods are accepted for LM393BIDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM393BIDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM393BIDGKR?
LM393BIDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM393BIDGKR 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 LM393BIDGKR?
For technical support, including LM393BIDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM393BIDGKR requirements.
6.How does Aetrix verify that LM393BIDGKR is sourced from the original manufacturer or authorized distributors?
All LM393BIDGKR 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 LM393BIDGKR meets industry standards.
7.What is the process for return or replacement of LM393BIDGKR?
All LM393BIDGKR units undergo pre-shipment inspection (PSI). If there is an issue with LM393BIDGKR, 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 LM393BIDGKR part is unused and in its original packaging.
Return procedure for LM393BIDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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