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Texas Instruments LM6511IM/NOPB
- Part No.:
- LM6511IM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM6511IM/NOPB.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:195
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Product details
Overview
LM6511IM/NOPB from Texas Instruments is a single high-speed voltage comparator with 180 ns response time, operating from +2.7V to +30V supply, featuring open-collector output compatible with +3V CMOS, +5V CMOS, and TTL logic families. It delivers low power consumption (<9.45 mW at 2.7V) and supports digital level shifting in portable equipment.
For engineers reviewing the LM6511IM/NOPB datasheet, LM6511IM/NOPB pinout, LM6511IM/NOPB application, or LM6511IM/NOPB equivalent, key selection criteria include input offset voltage (5 mV max), strobe-controlled output disable, common-mode range (0.5 V to V+ −1.25 V), and SOIC-8 package compatibility with standard PCB footprints.
Technical Context
The LM6511IM/NOPB implements a rail-to-rail input stage with internal strobe control enabling output disable via current-driven strobe pin (3–5 mA required). Its open-collector output allows wire-ORing and flexible pull-up configuration across mixed-voltage systems.
Designed for analog-to-digital interface circuits, it operates over −40°C to +85°C with guaranteed performance at 2.7V supply, supporting logic-level translation between 3V and 5V domains without external level-shifting components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Response Time | 180 ns typical for 100 mV input step with 25 mV overdrive - enables fast threshold detection in real-time control loops. |
| Supply Voltage Range | 2.5V to 30V operating range - supports direct integration into 3V, 3.3V, and 5V systems without regulation. |
| Input Offset Voltage | 5 mV maximum at 25°C - ensures accurate switching near reference voltages in precision sensing applications. |
| Input Bias Current | 130 nA maximum - minimizes loading error on high-impedance sensor sources like photodiodes or thermistors. |
| Output Saturation Voltage | 0.4 V maximum at 8 mA sink - maintains low logic-low voltage for reliable interfacing with 3V CMOS inputs. |
| Common-Mode Input Range | 0.5 V to V+ −1.25 V - accommodates inputs referenced to system ground or mid-supply bias points. |
| Strobe Control Current | 3–5 mA required to disable output - eliminates need for logic-level translators when using microcontroller GPIOs. |
Pinout & Package
LM6511IM/NOPB is housed in an 8-pin SOIC (Package D), 3.9 mm × 4.9 mm body, 1.75 mm max height, with standard JEDEC MS-012AA outline and RoHS-compliant matte tin (Sn) lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Open-collector output | Sinks current to ground; requires external pull-up resistor to define logic-high level and interface voltage domain. |
| 2 (−IN) | Inverting input | Differential input node accepting signals within 0.5 V to V+ −1.25 V; high-impedance (130 nA max bias). |
| 3 (+IN) | Non-inverting input | Differential input node with identical common-mode range and bias current as −IN pin. |
| 4 (GND) | Negative supply / reference ground | System ground connection; input common-mode and output saturation referenced to this terminal. |
| 5 (STROBE) | Output enable/disable control | Current-sink input requiring 3–5 mA to disable output; not TTL/CMOS logic-level compatible. |
| 6 (V+) | Positive supply | Accepts 2.5V to 30V; powers internal circuitry and defines upper common-mode limit (V+ −1.25 V). |
| 7 (NC) | No connect | Internally unconnected; must remain floating - no routing or grounding permitted. |
| 8 (NC) | No connect | Internally unconnected; must remain floating - no routing or grounding permitted. |
Key Features
| Feature | Design Value |
|---|---|
| Strobe-controlled output disable | Enables dynamic output gating using microcontroller GPIO without level shifters - reduces BOM count in battery-powered systems. |
| Wide supply range (2.5V–30V) | Eliminates need for dedicated comparator supply rails in multi-voltage systems such as industrial I/O modules. |
| Open-collector output with 8 mA sink capability | Supports direct interfacing to 3V/5V logic families and enables wired-AND bus configurations for fault monitoring. |
| 180 ns propagation delay | Meets timing requirements for high-speed zero-crossing detection in motor control and power supply feedback loops. |
| Input common-mode range extending to V+ −1.25 V | Allows direct sensing of signals near positive rail - critical for high-side current sensing with shunt resistors. |
Applications
| Portable Power Management | Universal Logic Level Shifter |
|---|---|
|
Use Scenario: Battery voltage monitoring in handheld medical devices with dual 3.3V/5V subsystems. IC Role / Device Role / Timing Role: Comparator detecting low-battery threshold against precision reference; strobe pin synchronized to MCU sleep cycles. Use Value: 180 ns response ensures timely shutdown before brownout; low 9.45 mW dissipation extends runtime in 3V operation. |
Use Scenario: Bidirectional logic translation between 3.3V FPGA I/O banks and legacy 5V peripherals. IC Role / Device Role / Timing Role: Voltage-level translator using internal hysteresis-free comparator architecture and external pull-ups. Use Value: Eliminates discrete MOSFET-based translators; 0.4 V saturation voltage guarantees valid TTL logic-low at 5V bus. |
| Cellular Baseband Monitoring | Industrial Sensor Interface |
|
Use Scenario: RF power amplifier enable/disable control triggered by envelope detector output in GSM transceivers. IC Role / Device Role / Timing Role: High-speed comparator converting analog envelope signal to clean digital enable pulse with minimal latency. Use Value: 180 ns propagation delay meets GSM burst timing constraints; strobe pin allows dynamic disable during idle frames. |
Use Scenario: Threshold detection for 4–20 mA loop-powered temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Isolated comparator comparing sensor output to programmable threshold with wide common-mode tolerance. Use Value: Input range up to V+ −1.25 V enables direct sensing without attenuators; 130 nA bias current avoids loop error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3501CDR | Faster 4.5 ns response, rail-to-rail output, but no strobe control and higher quiescent current (5.3 mA). | Better for ultra-high-speed ADC triggering; unsuitable where strobe-gated output or low-power sleep mode is required. | Select TLV3501CDR only when sub-10 ns timing dominates over power and control flexibility. |
| LM393DR | Slower 1.3 µs response, no strobe pin, lower supply range (2V–36V), higher input offset (7 mV max). | Cost-optimized for non-critical timing applications like simple battery indicators or fan control. | Choose LM393DR for cost-sensitive designs where 180 ns speed and strobe functionality are unnecessary. |
Compared with TLV3501CDR and LM393DR, the LM6511IM/NOPB uniquely balances nanosecond-speed response, strobe-enabled output control, and sub-10 mW power at 3V - making it optimal for portable systems requiring both speed and dynamic power management.
Availability
LM6511IM/NOPB is available at Aetrix Electronics and suitable for portable power management, universal logic level shifting, cellular baseband monitoring, and industrial sensor interface applications requiring stable component supply and long-term production continuity.
Supply support for LM6511IM/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, embedded processing, and connectivity technologies, with decades of expertise in precision analog IC design.
The LM6511IM/NOPB belongs to TI's legacy high-speed comparator product line, engineered specifically for low-voltage analog-to-digital interface applications where speed, power efficiency, and mixed-voltage interoperability are essential.
FAQ
What is the minimum supply voltage required for reliable operation of the LM6511IM/NOPB?
The LM6511IM/NOPB has a guaranteed operating supply range of 2.5V to 30V. At 2.7V, it delivers full specified performance including 180 ns response time and 5 mV max input offset voltage. Operation below 2.5V is not characterized and may result in undefined behavior or failure to meet datasheet limits.
Can the LM6511IM/NOPB be used without connecting the STROBE pin?
Yes, the LM6511IM/NOPB functions normally with the STROBE pin left unconnected - the output remains enabled. However, leaving STROBE floating is not recommended; it should be either pulled up via a current-limiting resistor to V+ (to ensure >5 mA sink if needed) or actively driven. Open-circuit STROBE may cause unpredictable output states due to noise coupling.
Does the LM6511IM/NOPB support rail-to-rail input voltage operation?
No. The LM6511IM/NOPB supports a common-mode input range from 0.5 V to V+ −1.25 V. It does not operate with inputs at the negative rail (GND) or within 1.25 V of the positive rail. For true rail-to-rail input capability, consider alternatives like the TLV3501, though those lack the strobe feature of the LM6511IM/NOPB.
What is the purpose of the two NC pins (pins 7 and 8) on the LM6511IM/NOPB SOIC package?
Pins 7 and 8 of the LM6511IM/NOPB are designated No Connect (NC) and are internally unconnected. They must remain electrically floating - neither grounded nor tied to any voltage. Routing traces or applying solder to these pins risks internal shorting or parametric shifts due to parasitic coupling, and violates TI's recommended layout practices per the datasheet.
How does the LM6511IM/NOPB differ from the LM6511IM in terms of RoHS compliance and marking?
The LM6511IM/NOPB is RoHS-compliant with matte tin (Sn) lead finish and carries "LM65 11IM" part marking. In contrast, the obsolete LM6511IM lacks RoHS compliance certification and uses lead-based finish. Both share identical electrical specifications and SOIC-8 packaging, but only LM6511IM/NOPB meets current environmental compliance standards for new designs.
LM6511IM/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- CMOS, Open-Collector, TTL
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 30V
- :
- 5mV @ 2.7V
- Voltage - Input Offset (Max):
- 0.13µA @ 2.7V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 3.5mA
- Current - Quiescent (Max):
- 72dB CMRR
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
LM6511IM/NOPB FAQ
1.How can I place an order for LM6511IM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM6511IM/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 LM6511IM/NOPB reliable?
The price and inventory of LM6511IM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM6511IM/NOPB is usually 5 days.
3.What payment methods are accepted for LM6511IM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM6511IM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM6511IM/NOPB?
LM6511IM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM6511IM/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 LM6511IM/NOPB?
For technical support, including LM6511IM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM6511IM/NOPB requirements.
6.How does Aetrix verify that LM6511IM/NOPB is sourced from the original manufacturer or authorized distributors?
All LM6511IM/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 LM6511IM/NOPB meets industry standards.
7.What is the process for return or replacement of LM6511IM/NOPB?
All LM6511IM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM6511IM/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 LM6511IM/NOPB part is unused and in its original packaging.
Return procedure for LM6511IM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM6511IM/NOPB Tags
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LM2903DR
Texas Instruments
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LM339DR
Texas Instruments
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LM339PWR
Texas Instruments
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LM393DT
STMicroelectronics
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LM2901PWR
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LM2903DT
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LM393DR
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LM239DR
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LM339APWR
Texas Instruments
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LM2903P
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LM393ADR
Texas Instruments
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NCX2200GMAZ
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