Overview
The LM211QDG4 is a general-purpose differential comparator produced by Texas Instruments. This component is part of the LMx11 family, known for its high-speed voltage comparison capabilities. Although the LM211QDG4 is currently discontinued, it remains a significant component in legacy systems and designs. It operates over a wide range of power-supply voltages and is compatible with various logic systems, including TTL and MOS circuits.
Key Specifications
| Parameter | Value |
|---|---|
| Category | Comparators |
| Manufacturer | Texas Instruments |
| Product Status | Discontinued at Digi-Key |
| Type | General Purpose |
| Number of Elements | 1 |
| Output Type | DTL, MOS, Open-Collector, Open-Emitter, RTL, TTL |
| Voltage - Supply, Single/Dual (±) | 3.5V ~ 30V, ±1.75V ~ 15V |
| Voltage - Input Offset (Max) | 3mV @ ±15V |
| Current - Input Bias (Max) | 0.1µA @ ±15V |
| Current - Output (Typ) | 50mA |
| Current - Quiescent (Max) | 6mA |
| Operating Temperature | -40°C ~ 125°C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
Key Features
- Fast Response Time: 165 ns
- Strobe Capability: Allows the output to be in the off state regardless of the differential input when the strobe is low.
- Maximum Input Bias Current: 300 nA
- Maximum Input Offset Current: 70 nA
- Can Operate From Single 5-V Supply: Versatile power supply options.
- High-Reliability Automotive Applications: Qualified to automotive standards and compliant to MIL-PRF-38535.
- Offset Balancing and Strobe Capabilities: Enhances flexibility in design.
- Outputs Can Drive Loads Referenced to Ground, VCC+ or VCC−: Versatile output configurations.
- Wire-OR Connected Outputs: Allows multiple comparators to share the same output line.
Applications
The LM211QDG4 is suitable for a variety of applications, including:
- High-Speed Voltage Comparison: Ideal for systems requiring fast and accurate voltage comparisons.
- Logic Systems: Compatible with TTL and MOS circuits.
- Automotive Systems: Qualified for high-reliability automotive applications.
- Industrial Control Systems: Can drive lamps or relays and switch voltages up to 50 V at 50 mA.
- Medical Devices: Where precise voltage comparison is critical.
Q & A
- What is the operating temperature range of the LM211QDG4?
The operating temperature range is -40°C to 125°C. - What is the typical output current of the LM211QDG4?
The typical output current is 50 mA. - Can the LM211QDG4 operate from a single 5-V supply?
Yes, it can operate from a single 5-V supply. - What is the maximum input bias current of the LM211QDG4?
The maximum input bias current is 300 nA. - Is the LM211QDG4 RoHS compliant?
Yes, it is RoHS compliant. - What is the package type of the LM211QDG4?
The package type is 8-SOIC (0.154", 3.90mm Width). - Can the outputs of the LM211QDG4 be wire-OR connected?
Yes, the outputs can be wire-OR connected. - What is the strobe capability of the LM211QDG4?
The strobe capability allows the output to be in the off state regardless of the differential input when the strobe is low. - Is the LM211QDG4 still in production?
No, the LM211QDG4 is discontinued and no longer in production. - What are some common applications of the LM211QDG4?
Common applications include high-speed voltage comparison, logic systems, automotive systems, industrial control systems, and medical devices.
