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Texas Instruments LMV393MX
- Part No.:
- LMV393MX
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMV393MX.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,075
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Product details
Overview
LMV393MX from Texas Instruments is a dual, low-voltage, rail-to-rail input comparator with open-collector outputs, designed for space-constrained portable systems operating from 2.7 V to 5 V. It delivers 60 µA/channel supply current, 200 mV output saturation voltage at 4 mA sink, and 200 ns propagation delay (5-V supply, 100-mV overdrive), enabling battery-powered voltage monitoring and level detection in handheld devices.
For engineers reviewing the LMV393MX datasheet, LMV393MX pinout, LMV393MX application, or LMV393MX equivalent, key selection criteria include its ground-sensing input range (−0.1 V to 4.2 V at 5 V), industrial temperature rating (−40°C to +85°C), open-collector output compatibility with CMOS/TTL logic, and SOIC-8/VSSOP-8 package options for layout flexibility.
Technical Context
The LMV393MX implements bipolar-input BiCMOS architecture for improved noise immunity and stable operation across its 2.7–5 V supply range. Its input stage supports common-mode voltages extending 0.1 V below ground and up to 0.8 V below V+, enabling direct sensing of signals referenced to system ground.
Each comparator features an uncommitted NPN output transistor requiring external pull-up, supporting wired-OR configurations, window comparators, and level translation to higher or lower logic rails-provided the pull-up voltage remains ≤ V+.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5 V - Enables direct operation from single-cell Li-ion or two-cell alkaline batteries without regulation. |
| Supply Current per Channel | 60 µA typical at 5 V - Supports multi-year battery life in always-on sensing nodes. |
| Input Offset Voltage | 1.7 mV (min), 7 mV (typ) - Ensures reliable threshold detection with <10 mV hysteresis margin. |
| Propagation Delay | 200 ns (typ, 100-mV overdrive @ 5 V) - Suitable for medium-speed signal conditioning and timing-critical edge detection. |
| Output Saturation Voltage | 200 mV max at 4 mA sink - Delivers strong LOW-state drive into standard TTL/CMOS loads with minimal voltage headroom loss. |
| Input Common-Mode Range | −0.1 V to 4.2 V @ 5 V - Allows direct interface to ground-referenced sensors and analog front-ends without level-shifting. |
| Operating Temperature | −40°C to +85°C - Qualified for industrial and consumer-grade embedded applications without derating. |
Pinout & Package
LMV393MX is available in 8-pin SOIC (D) and VSSOP (DGK) packages, both measuring 4.90 mm × 3.91 mm (SOIC) and 3.00 mm × 3.00 mm (VSSOP), respectively. Pin functions are identical across packages.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | +IN A | Noninverting input for comparator A - Accepts analog signals down to −0.1 V relative to V−. |
| 2 | −IN A | Inverting input for comparator A - Typically connected to reference voltage or feedback network. |
| 3 | OUT A | Open-collector output for comparator A - Requires external pull-up resistor (1–10 kΩ) to define HIGH-level voltage. |
| 4 | V− | Negative supply terminal - Serves as circuit ground reference in single-supply operation. |
| 5 | V+ | Positive supply terminal - Must be ≥2.7 V and ≤5 V; sets upper limit for pull-up voltage. |
| 6 | −IN B | Inverting input for comparator B - Independent channel enables dual-threshold or window detection. |
| 7 | +IN B | Noninverting input for comparator B - Supports differential or independent signal comparison. |
| 8 | OUT B | Open-collector output for comparator B - Electrically isolated from OUT A; supports independent load driving. |
Key Features
| Feature | Design Value |
|---|---|
| Ground-sensing input stage | Common-mode range includes −0.1 V below V−, enabling direct connection to 0-V-referenced sensors and transducers. |
| Low quiescent current | 60 µA/channel at 5 V allows integration into ultra-low-power wake-up circuits and battery-backed monitors. |
| Fast propagation response | 200 ns typical delay ensures accurate timing capture in pulse-width measurement and zero-crossing detection. |
| Open-collector output topology | Supports wired-OR logic, level translation to any VCC ≤ V+, and compatibility with legacy TTL/CMOS bus structures. |
| Industrial temperature qualification | −40°C to +85°C operation guarantees reliability in automotive cabin modules, industrial controllers, and outdoor IoT endpoints. |
Applications
| Battery Voltage Monitor | Window Comparator |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during charge/discharge cycles to trigger low-battery alerts or cutoff. IC Role / Device Role / Timing Role: Dual comparator compares cell voltage against upper (4.2 V) and lower (3.0 V) thresholds using resistive dividers. Use Value: Enables precise, low-power state-of-charge indication without microcontroller intervention or ADC overhead. | Use Scenario: Detecting whether an analog sensor output falls within a defined safety band (e.g., 1.2–2.8 V). IC Role / Device Role / Timing Role: LMV393MX channels A and B configured as high- and low-limit comparators feeding a NAND gate. Use Value: Provides fail-safe hardware-level validation before enabling actuator control or data logging. |
| Level Translator | Zero-Crossing Detector |
Use Scenario: Converting 3.3-V logic signals to 5-V compatible levels for interfacing with legacy peripherals. IC Role / Device Role / Timing Role: LMV393MX used as a threshold detector with VREF = 1.65 V; pull-up on OUT tied to 5 V. Use Value: Eliminates need for dedicated level-shifter ICs while maintaining sub-200 ns transition fidelity. | Use Scenario: Detecting AC line zero crossings in smart energy meters or motor phase control. IC Role / Device Role / Timing Role: One LMV393MX channel compares sinusoidal input to ground reference with hysteresis. Use Value: Achieves jitter-free edge timing with <1 µs propagation uncertainty across temperature and supply variation. |
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 | Higher supply current (500 µA/channel), wider supply range (2–36 V), slower propagation (1.3 µs typ), no guaranteed 2.7-V operation. | Preferred for high-voltage industrial systems; unsuitable for sub-3-V battery operation. | Select LM393DR only when >5 V supplies or legacy footprint compatibility is required. |
| TLV3702IDR | Lower supply current (55 µA/channel), rail-to-rail output, push-pull (not open-collector), 360 ns propagation delay. | Eliminates need for pull-up resistors but cannot perform wired-OR or level translation to external rails. | Choose TLV3702IDR when board space is critical and open-collector functionality is not needed. |
Compared with LM393DR, LMV393MX offers 10× lower power and guaranteed 2.7-V start-up, making it superior for portable designs; versus TLV3702IDR, LMV393MX retains essential open-collector flexibility for bus arbitration and mixed-voltage interfacing despite slightly faster delay.
Availability
LMV393MX is available at Aetrix Electronics and suitable for battery-powered electronics, mobile communications, and general-purpose portable devices requiring stable component supply across production lifecycles.
Supply support for LMV393MX 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 chain components.
The LMV393MX belongs to TI's LMV3xx-N low-voltage comparator family, engineered specifically for cost-sensitive, space-constrained portable applications where ultra-low power, ground-sensing capability, and open-collector interoperability are essential.
FAQ
What is the minimum supply voltage for reliable operation of the LMV393MX?
The LMV393MX is fully specified and ensured to operate down to 2.7 V, with all key parameters-including propagation delay, input offset, and output saturation-guaranteed across this voltage. Operation below 2.7 V is not characterized and may result in degraded performance or failure to switch. The absolute maximum rating allows up to 5.5 V, but functional operation is limited to 2.7–5 V per datasheet specifications.
Does the LMV393MX support rail-to-rail input voltage range?
The LMV393MX supports rail-to-rail input common-mode range *with respect to ground*, extending from −0.1 V below V− to 4.2 V above V− at 5 V supply. This includes ground but does not extend to the positive rail (V+); the upper limit is typically 0.8 V below V+. Therefore, it is ground-sensing but not full rail-to-rail input-signals near V+ require attenuation or level shifting.
Can the LMV393MX outputs drive a 5-V logic input directly?
Yes-the open-collector outputs of the LMV393MX can drive 5-V logic inputs when a pull-up resistor is connected to a 5-V rail, provided the LMV393MX's own V+ supply is also ≥5 V. If V+ is only 3.3 V, the pull-up must remain ≤3.3 V to avoid violating absolute maximum ratings. The output sink capability (≥8 mA at 5 V) exceeds standard TTL/CMOS input current requirements.
Is the LMV393MX pin-compatible with the LM393?
No-while both are dual comparators with open-collector outputs, the LMV393MX (SOIC-8/VSSOP-8) uses a different pinout than the legacy LM393 (SOIC-8). In LMV393MX, pins 1/2/3 are +IN A/−IN A/OUT A, whereas LM393 assigns pins 1/2/3 to OUT A/−IN A/+IN A. Direct replacement requires PCB redesign. Always verify pin mapping before substitution.
What is the recommended pull-up resistor value for LMV393MX outputs?
Texas Instruments recommends a pull-up resistor between 1 kΩ and 10 kΩ for LMV393MX outputs. A 4.7 kΩ resistor provides optimal trade-off: sufficient speed (RC time constant <100 ns with typical trace capacitance) while limiting supply current to ~1 mA per active output and minimizing power dissipation. Values below 1 kΩ risk excessive current draw; values above 10 kΩ degrade rise time and noise immunity.
LMV393MX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- CMOS, Open-Collector, TTL
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 5.5V
- :
- 7mV @ 5V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 84mA @ 5V
- Current - Output (Typ):
- 300µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 600ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
LMV393MX FAQ
1.How can I place an order for LMV393MX through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV393MX 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 LMV393MX reliable?
The price and inventory of LMV393MX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV393MX is usually 5 days.
3.What payment methods are accepted for LMV393MX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV393MX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV393MX?
LMV393MX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV393MX 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 LMV393MX?
For technical support, including LMV393MX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV393MX requirements.
6.How does Aetrix verify that LMV393MX is sourced from the original manufacturer or authorized distributors?
All LMV393MX 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 LMV393MX meets industry standards.
7.What is the process for return or replacement of LMV393MX?
All LMV393MX units undergo pre-shipment inspection (PSI). If there is an issue with LMV393MX, 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 LMV393MX part is unused and in its original packaging.
Return procedure for LMV393MX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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