LM311P Single High-Speed Differential Comparator PDIP-8
The LM311P Single High-Speed Differential Comparator is a precision voltage comparator designed for fast and accurate comparison of analog signals. Packaged in an 8-pin PDIP, this device features a differential input stage and an open-collector output, allowing flexible interfacing with various logic levels and supply voltages. The LM311P supports a wide supply voltage range and delivers rapid response times, making it suitable for high-speed threshold detection, zero-crossing detection, and waveform shaping applications. Its robust design, combined with external output pull-up flexibility, enables reliable operation in both analog and digital systems where precise and fast comparison is required.
Features
- High-speed differential voltage comparator.
- Open-collector output for flexible logic interfacing.
- Wide single-supply or dual-supply operation.
- Fast response suitable for high-frequency signals.
- Differential input stage with good noise immunity.
- Standard PDIP-8 through-hole package.
PINOUT
| Pin Number | Pin Name | Description |
| 1 | EMIT OUT | Emitter Output – This is the Emitter pin of the output transistor |
| 2 | Non-Inverting Input (IN+) | The Non-Inverting Pin of the comparator is give a variable voltage to compare |
| 3 | Inverting Input (IN-) | The Inverting pin is also given a fixed voltage which is compared with the (IN+) |
| 4 | Ground (VCC-) | This pin is connected to the ground of the system (Negative voltage can also be used) |
| 5 | Balance | This pin can be used to turn off the DC-offset voltage |
| 6 | Balance/Strobe | This pin can be used to turn off the output stage |
| 7 | COL OUT | Collector Out – This is the Collector output of the transistor |
| 8 | VCC+ | Provide the operating voltage for the Op-Amp. For LM311 it is upto +15V |
Specifications
Absolute Maximum Ratings
| Parameter(1) | MIN | MAX | UNIT | |
|---|---|---|---|---|
| Supply voltage | VCC+(2) | 18 | V | |
| VCC-(2) | -18 | |||
| VCC+ – VCC- | 36 | |||
| Differential input voltage(3) | VID | ±30 | V | |
| Input voltage (either input)(2)(4) | VI | ±15 | V | |
| Voltage from emitter output to VCC- | 30 | V | ||
| Voltage from collector output to VCC- | 40 | |||
| Duration of output short circuit to ground | 10 | s | ||
| Operating virtual-junction temperature | TJ | 150 | °C | |
| Lead temperature 1,6 mm (1/16 inch) from case, 60 s | 260 | °C | ||
| Storage temperature | Tstg | -65 | 150 | °C |
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device.
(2) All voltage values, unless otherwise noted, are with respect to the midpoint between VCC+ and VCC-.
(3) Differential voltages are at IN+ with respect to IN–.
(4) The magnitude of the input voltage must never exceed the magnitude of the supply voltage or ±15 V, whichever is less.
NOTE: for full electrical specifications check the datasheet down below.
Applications
- Zero-crossing detectors.
- Voltage level and threshold detection.
- Pulse and waveform shaping circuits.
- Oscillators and timing circuits.
- Over-voltage and under-voltage protection.
- Digital logic signal conditioning.
Package Contents
- 1x LM311P Single High-Speed Differential Comparator PDIP-8.
Documents
| Datasheet | LM311P |
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