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Texas Instruments LM339BIRTER
- Part No.:
- LM339BIRTER
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
LM339BIRTER.pdf
- Description:
- 36-V, -40C TO 85C QUAD STANDARD
- Quantity:
- Payment:
- Shipping:
Inventory:2,313
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Product details
Overview
LM339BIRTER from Texas Instruments is a quad differential comparator IC designed for precision voltage comparison in single-supply industrial and power management systems. It delivers ±0.37 mV typical input offset voltage, 1 µs propagation delay, 2–36 V supply range, 2 kV HBM ESD rating, and operates across –40°C to +85°C - enabling reliable overvoltage detection in server PSUs and motor drive protection circuits.
For engineers reviewing the LM339BIRTER datasheet, LM339BIRTER pinout, LM339BIRTER application, or LM339BIRTER equivalent, this page provides verified electrical specifications, package-confirmed pin functions, temperature-rated performance data, and drop-in alternative options validated for industrial-grade comparator replacement.
Technical Context
The LM339BIRTER implements four independent open-collector comparators with rail-to-rail input common-mode range (down to ground) and differential input capability up to ±38 V. Its architecture supports direct interface with TTL, MOS, and CMOS logic via pull-up outputs while maintaining low quiescent current (1.2 mA max at 36 V).
It features dedicated internal ESD clamps, improved input ruggedness versus legacy LM339 variants, and guaranteed operation under extended thermal stress (up to 150°C junction temperature), making it suitable for high-reliability feedback loops in power conversion and factory automation control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports wide-input industrial supplies without external regulation |
| Input Offset Voltage (max) | ±5.5 mV over –40°C to +85°C - enables accurate threshold detection in sensor interfaces |
| Propagation Delay | 1 µs typical (TTL input step) - ensures fast response in overcurrent/overvoltage shutdown paths |
| Input Bias Current (typ) | 3.5 nA - minimizes loading on high-impedance voltage dividers and precision references |
| ESD Rating (HBM) | 2000 V - meets industrial handling requirements without additional protection circuitry |
| Output Type | Open-collector - allows wired-OR logic and flexible level translation with external pull-up |
| Quiescent Current | 1.2 mA max (all four comparators, 36 V) - enables low-power monitoring in always-on subsystems |
Pinout & Package
LM339BIRTER is supplied in a 14-pin TSSOP package (5.00 mm × 4.40 mm body size) with exposed thermal pad connected to GND for enhanced thermal dissipation in compact layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Comparator 1 output | Open-collector output requiring external pull-up; sinks up to 21 mA |
| 2 (OUT2) | Comparator 2 output | Independent open-collector output; electrically isolated from OUT1 |
| 3 (VCC) | Positive supply | Accepts 2–36 V; powers all four comparators; no reverse polarity protection |
| 4 (IN2–) | Comparator 1 inverting input | Accepts voltages from GND to VCC − 2 V; tolerant of inputs up to VCC |
| 5 (IN2+) | Comparator 1 non-inverting input | Same voltage range as IN2–; differential input range extends to ±38 V |
| 6 (IN1–) | Comparator 2 inverting input | Identical electrical behavior to IN2–; supports rail-to-rail common-mode operation |
| 7 (IN1+) | Comparator 2 non-inverting input | Paired with IN1–; enables dual-channel threshold comparison per device |
| 8 (IN3–) | Comparator 3 inverting input | Third independent comparator input pair; shares same specs as IN1–/IN1+ |
| 9 (IN3+) | Comparator 3 non-inverting input | Supports simultaneous multi-level voltage monitoring (e.g., undervoltage/overvoltage) |
| 10 (IN4–) | Comparator 4 inverting input | Enables fourth independent decision node; critical for redundant safety checks |
| 11 (IN4+) | Comparator 4 non-inverting input | Allows full quad-comparator utilization in fault-detection and sequencing applications |
| 12 (GND) | Negative supply / reference | Must be connected to system ground; thermal pad also tied to GND |
| 13 (OUT4) | Comparator 4 output | Open-collector; compatible with 3.3 V or 5 V logic when pulled to respective rail |
| 14 (OUT3) | Comparator 3 output | Final output channel; supports independent load switching or status indication |
Key Features
| Feature | Design Value |
|---|---|
| Drop-in replacement for LM339/LM2901 | Pin-compatible with legacy SOIC, PDIP, and TSSOP footprints - no PCB redesign required |
| Extended supply voltage range | Rated to 36 V operating / 38 V absolute max - eliminates need for input scaling in 24 V industrial systems |
| Low input offset drift | ±0.37 mV typical at 25°C, ±5.5 mV max over full temperature range - improves accuracy in temperature-varying environments |
| Fast propagation delay | 1 µs response time enables real-time protection in motor drives and UPS systems |
| Rail-to-rail input common-mode range | Operates with inputs down to GND and up to VCC − 2 V - simplifies interfacing with sensors and DACs |
Applications
| Server Power Supply Monitoring | Vacuum Robot Safety Control |
|---|---|
Use Scenario: Real-time monitoring of +12 V, +5 V, and +3.3 V rails in redundant server PSUs to trigger graceful shutdown on undervoltage or overvoltage events. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous voltage window checking with independent thresholds per rail. Use Value: Enables sub-millisecond fault detection using LM339BIRTER's 1 µs propagation delay and rail-to-rail input range - reducing risk of downstream component damage. | Use Scenario: Monitoring vacuum pressure sensor output and motor current feedback to halt motion if vacuum loss or overcurrent occurs. IC Role / Device Role / Timing Role: LM339BIRTER compares analog sensor signals against fixed reference voltages to generate immediate hardware-level stop commands. Use Value: Leverages ±38 V differential input tolerance and 2 kV HBM ESD rating to withstand noisy factory floor environments without signal conditioning. |
| Single-Phase UPS Battery Management | Factory Automation Sensor Interface |
Use Scenario: Detecting battery charge state and AC input presence to switch between line and battery modes in offline UPS units. IC Role / Device Role / Timing Role: Uses two comparators for battery voltage windowing and two for AC zero-crossing detection. Use Value: Achieves <1.2 mA total quiescent current at 36 V - extending backup runtime during brownout conditions. | Use Scenario: Converting analog outputs from temperature, flow, and proximity sensors into digital logic levels for PLC input modules. IC Role / Device Role / Timing Role: LM339BIRTER acts as a configurable threshold detector with adjustable hysteresis via external feedback. Use Value: Benefits from 3.5 nA typical input bias current to avoid loading high-impedance sensor bridges and thermistor networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad differential comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2901BIDR | Identical electrical specs but rated for –40°C to +125°C ambient; same TSSOP-14 package | Required for under-hood automotive or high-temp industrial enclosures exceeding 85°C | Select LM2901BIDR when extended temperature operation is mandatory; otherwise LM339BIRTER suffices for standard industrial use. |
| LM339DR | Legacy A-version: higher 4 mV max offset, slower 1.3 µs response, 30 V max supply, no 2 kV HBM rating | Suitable only for cost-sensitive, non-safety-critical designs with relaxed accuracy and speed requirements | Choose LM339DR only if existing BOM uses it and thermal/ESD margins are not design constraints. |
Compared with LM2901BIDR and LM339DR, the LM339BIRTER offers optimal balance of precision (±0.37 mV offset), speed (1 µs), and ruggedness (36 V/2 kV) for new industrial designs - while maintaining full pin compatibility with both alternatives.
Availability
LM339BIRTER is available at Aetrix Electronics and suitable for server PSU monitoring, vacuum robot safety control, single-phase UPS battery management, and factory automation sensor interface applications requiring stable component supply and long-term industrial lifecycle support.
Supply support for LM339BIRTER 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 LM339BIRTER belongs to TI's next-generation B-version comparator family, engineered specifically for high-reliability industrial power monitoring and safety-critical voltage supervision where precision, speed, and robustness are essential.
FAQ
What is the maximum supply voltage rating for the LM339BIRTER?
The LM339BIRTER has an absolute maximum supply voltage rating of 38 V, with recommended operating range from 2 V to 36 V. This allows direct integration into 24 V and 36 V industrial power systems without input attenuation or regulation - a key advantage over legacy LM339 variants limited to 30 V.
Does the LM339BIRTER support rail-to-rail input operation?
Yes, the LM339BIRTER supports rail-to-rail common-mode input voltage operation from GND to VCC − 2 V. Either input can extend up to the full VCC level without damage, and the differential input range is rated to ±38 V - enabling direct connection to unbuffered sensors and high-side voltage monitors.
What is the typical input offset voltage of the LM339BIRTER and how does it vary with temperature?
The LM339BIRTER has a typical input offset voltage of ±0.37 mV at 25°C, with a maximum of ±5.5 mV across the full –40°C to +85°C operating range. This tight offset specification ensures consistent threshold accuracy in temperature-varying environments such as factory automation and server rack deployments.
Can the LM339BIRTER replace older LM339 variants without board modifications?
Yes, the LM339BIRTER is a documented drop-in replacement for LM339, LM239, and LM2901 in TSSOP-14, SOIC-14, and PDIP-14 packages. Pinout, footprint, and electrical interface are identical - allowing seamless upgrade to improved offset, speed, ESD, and supply voltage capability without layout changes.
What output configuration does the LM339BIRTER use and what pull-up voltage is supported?
The LM339BIRTER uses open-collector outputs compatible with TTL, MOS, and CMOS logic families. External pull-up resistors can be connected to any voltage rail from 3.3 V to 36 V, enabling flexible level translation - for example, driving 5 V microcontroller inputs from a 24 V supply domain using the LM339BIRTER's output stage.
LM339BIRTER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 16-WFQFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Differential
- Number of Elements:
- 4
- Output Type:
- Open-Collector, Open-Drain
- Voltage - Supply, Single/Dual (±):
- 2V ~ 36V
- :
- 3.5mV @ 5V
- Voltage - Input Offset (Max):
- 0.025µA @ 5V
- Current - Input Bias (Max):
- 21mA @ 5V
- Current - Output (Typ):
- 1.2mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 1µs (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 16-WQFN (3x3)
LM339BIRTER FAQ
1.How can I place an order for LM339BIRTER through Aetrix?
Please submit a Request for Quotation (RFQ) for LM339BIRTER 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 LM339BIRTER reliable?
The price and inventory of LM339BIRTER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM339BIRTER is usually 5 days.
3.What payment methods are accepted for LM339BIRTER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM339BIRTER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM339BIRTER?
LM339BIRTER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM339BIRTER 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 LM339BIRTER?
For technical support, including LM339BIRTER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM339BIRTER requirements.
6.How does Aetrix verify that LM339BIRTER is sourced from the original manufacturer or authorized distributors?
All LM339BIRTER 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 LM339BIRTER meets industry standards.
7.What is the process for return or replacement of LM339BIRTER?
All LM339BIRTER units undergo pre-shipment inspection (PSI). If there is an issue with LM339BIRTER, 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 LM339BIRTER part is unused and in its original packaging.
Return procedure for LM339BIRTER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM339BIRTER Tags
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