Specifications
| Type | Description |
|---|---|
| Part Number | LM393P |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | PDIP (8), P package, 9.81 mm x 6.35 mm nominal body |
| Number of comparators | 2 independent voltage comparators |
| Supply voltage range | 2 to 30 V |
| Recommended supply voltage | 2 to 30 V |
| Absolute maximum supply voltage | -0.3 to 36 V |
| Differential input voltage range | -36 to 36 V |
| Input voltage range | -0.3 to 36 V |
| Output voltage range | -0.3 to 36 V |
| Output current | 20 mA max |
| Input current | -50 mA |
| Output short circuit duration to ground | Unlimited |
| Operating virtual-junction temperature | 150 °C max |
| Storage temperature | -65 to 150 °C |
| Recommended input voltage range | 0 V to (V+) - 2.0 V |
| Ambient operating temperature | 0 to 70 °C |
| Total supply current | 1 to 2.5 mA |
| ESD rating, HBM | ±2000 V |
| ESD rating, CDM | ±1000 V |
| Input offset voltage | ±9 mV max over temperature |
| Input bias current | 25 nA typ, 250 nA max |
| Response time | 1.3 µs typ |
| Common-mode input range includes ground | Yes |
| Output compatibility | TTL, MOS, and CMOS compatible |
| PDIP junction-to-ambient thermal resistance | 114.9 °C/W |
| PDIP junction-to-case top thermal resistance | 93.8 °C/W |
| PDIP junction-to-board thermal resistance | 77.7 °C/W |
| PDIP junction-to-top characterization parameter | 60.4 °C/W |
| PDIP junction-to-board characterization parameter | 76.7 °C/W |
| Datasheet Status | request_only |
Product Overview
The LM393P is a Texas Instruments dual voltage comparator in the Signal_Chain category. It integrates 2 independent voltage comparators and is specified for non-B LM393 operation across a recommended 2 to 30 V supply range. The recommended input voltage range is 0 V to (V+) - 2.0 V, and the common-mode input range includes ground.
Electrical limits include an absolute maximum supply voltage range of -0.3 to 36 V, differential input voltage range of -36 to 36 V, input voltage range of -0.3 to 36 V, output voltage range of -0.3 to 36 V, and 20 mA maximum output current. The device also specifies unlimited output short-circuit duration to ground under the absolute maximum ratings conditions.
The LM393P is supplied in a PDIP (8) P package with a 9.81 mm x 6.35 mm nominal body. Thermal data for the PDIP package includes 114.9 °C/W junction-to-ambient resistance and 93.8 °C/W junction-to-case top resistance. With TTL, MOS, and CMOS compatible output behavior, the part fits comparator-based threshold and logic-interface signal-chain functions.
Key Features
- Dual device with 2 independent voltage comparators
- Recommended supply voltage range from 2 to 30 V
- Input common-mode range includes ground
- Recommended input range is 0 V to V+ minus 2.0 V
- Total supply current specified from 1 to 2.5 mA
- Input offset voltage is ±9 mV maximum over temperature
- Input bias current is 25 nA typical, 250 nA maximum
- Typical response time is 1.3 µs
- Output supports TTL, MOS, and CMOS compatibility
- PDIP-8 package with 114.9 °C/W junction-to-ambient resistance
Typical Applications
- Voltage threshold comparison
- Ground-referenced signal detection
- Logic-level comparator outputs
- TTL interface signal conditioning
- MOS and CMOS interface circuits
- Dual-channel comparator functions
Procurement Notes
When requesting a quote for LM393P, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
How many comparators are included in the LM393P?
The LM393P includes 2 independent voltage comparators. This dual-comparator structure is stated in the device description and supports two comparator channels in the same PDIP-8 package.
What supply voltage range is recommended for LM393P operation?
For non-V, non-B devices including the LM393, the recommended supply voltage range is 2 to 30 V. The family comparison table also lists a 2 to 30 V supply voltage range.
What input voltage range should be used during operation?
The recommended input voltage range for non-B devices is 0 V to (V+) - 2.0 V. The absolute maximum input voltage rating for either input is -0.3 to 36 V.
What logic interfaces are compatible with the LM393P output?
The LM393P output is specified as compatible with TTL, MOS, and CMOS logic interfaces. This compatibility is listed in the feature information for the device.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.