Specifications
| Type | Description |
|---|---|
| Part Number | LM393 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Component Type | Other |
| Package / Case | SOIC-8 4.90 mm x 3.91 mm; VSSOP-8 3.00 mm x 3.00 mm; PDIP-8 9.81 mm x 6.35 mm; SO-8 6.20 mm x 5.30 mm; TSSOP-8 3.00 mm x 4.40 mm; SOT-23-8 2.90 mm x 1.60 mm; WSON-8 2.00 mm x 2.00 mm |
| Number of Comparators | 2 independent voltage comparators; device description; source page 1 |
| Supply Voltage Range | 2 to 30 V; LM393 recommended operating conditions, non-V non-B devices; source page 4 |
| Absolute Maximum Supply Voltage | -0.3 to 36 V; LM393 non-B versions; source page 4 |
| Differential Input Voltage | -36 to 36 V; LM393 non-B absolute maximum rating; source page 4 |
| Input Voltage Range, Absolute Maximum | -0.3 to 36 V; LM393 non-B absolute maximum rating, either input; source page 4 |
| Output Voltage Range | -0.3 to 36 V; LM393 non-B absolute maximum rating; source page 4 |
| Output Current | 20 mA max; LM393 non-B absolute maximum rating; source page 4 |
| Output Short Circuit Duration to Ground | Unlimited; absolute maximum ratings; short circuits from outputs to VCC can cause excessive heating; source page 4 |
| Operating Virtual Junction Temperature | 150 °C max; absolute maximum ratings; source page 4 |
| Storage Temperature | -65 to 150 °C; absolute maximum ratings; source page 4 |
| Ambient Temperature Range | 0 to 70 °C; LM393 recommended operating conditions; source page 4 |
| Input Voltage Range, Recommended | 0 to (V+) - 2.0 V; LM393 recommended operating conditions, non-B devices; source page 4 |
| ESD Rating HBM | ±2000 V; per ANSI/ESDA/JEDEC JS-001; source page 5 |
| ESD Rating CDM | ±1000 V; per JEDEC JESD22-C101; source page 5 |
| Total Supply Current | 1 to 2.5 mA; LM393 family comparison, 5 V to 30 V max; source page 1 |
| Offset Voltage | ±9 mV max over temperature; LM393 family comparison; source page 1 |
| Input Bias Current | 25 nA typ, 250 nA max; LM393 family comparison; source page 1 |
| Response Time | 1.3 µs typ; LM393 family comparison; source page 1 |
| Common-Mode Input Range Includes Ground | Yes; feature list; source page 1 |
| Output Compatibility | TTL, MOS, and CMOS compatible; feature list; source page 1 |
| Pin 1 Function | 1OUT, comparator 1 output; SOIC, VSSOP, PDIP, SO, TSSOP, DDF, DSG packages; source page 3 |
| Pin 2 Function | 1IN-, comparator 1 negative input; SOIC, VSSOP, PDIP, SO, TSSOP, DDF, DSG packages; source page 3 |
| Pin 3 Function | 1IN+, comparator 1 positive input; SOIC, VSSOP, PDIP, SO, TSSOP, DDF, DSG packages; source page 3 |
| Pin 4 Function | GND, ground; SOIC, VSSOP, PDIP, SO, TSSOP, DDF, DSG packages; source page 3 |
| Pin 5 Function | 2IN+, comparator 2 positive input; SOIC, VSSOP, PDIP, SO, TSSOP, DDF, DSG packages; source page 3 |
| Pin 6 Function | 2IN-, comparator 2 negative input; SOIC, VSSOP, PDIP, SO, TSSOP, DDF, DSG packages; source page 3 |
| Pin 7 Function | 2OUT, comparator 2 output; SOIC, VSSOP, PDIP, SO, TSSOP, DDF, DSG packages; source page 3 |
| Pin 8 Function | VCC, positive supply; SOIC, VSSOP, PDIP, SO, TSSOP, DDF, DSG packages; source page 3 |
| Thermal Pad Connection | Connect directly to GND pin; DSG WSON package with exposed pad; source page 3 |
| Junction-to-Ambient Thermal Resistance, D SOIC-8 | 148.5 °C/W; source page 5 |
| Junction-to-Ambient Thermal Resistance, P PDIP-8 | 114.9 °C/W; source page 5 |
| Junction-to-Ambient Thermal Resistance, PW TSSOP-8 | 200.6 °C/W; source page 5 |
| Junction-to-Ambient Thermal Resistance, DGK VSSOP-8 | 193.7 °C/W; source page 5 |
| Junction-to-Ambient Thermal Resistance, DDF SOT-23-8 | 197.9 °C/W; source page 5 |
| Junction-to-Ambient Thermal Resistance, DSG WSON-8 | 96.9 °C/W; source page 5 |
| Datasheet Status | request_only |
Product Overview
The Texas Instruments LM393 is a Signal_Chain dual voltage comparator containing 2 independent voltage comparators. The device is specified as a dual voltage comparator and supports output compatibility with TTL, MOS, and CMOS logic families. Its common-mode input range includes ground, enabling ground-referenced comparison within the stated operating limits.
For LM393 non-B devices, the recommended supply voltage range is 2 to 30 V, and the recommended input voltage range is 0 to (V+) - 2.0 V. Absolute maximum ratings include a -0.3 to 36 V supply range, -36 to 36 V differential input voltage, -0.3 to 36 V input and output voltage ranges, and 20 mA maximum output current.
Package options cover SOIC-8, VSSOP-8, PDIP-8, SO-8, TSSOP-8, SOT-23-8, and WSON-8 outlines. Pin functions provide separate inputs and outputs for comparator 1 and comparator 2, with pin 4 as GND and pin 8 as VCC. For the DSG WSON exposed-pad package, the thermal pad is connected directly to GND.
Key Features
- 2 independent voltage comparators in one LM393 device
- 2 to 30 V recommended supply range
- Common-mode input range includes ground
- TTL, MOS, and CMOS compatible output interface
- 1.3 µs typical response time
- 25 nA typical input bias current
- ±9 mV maximum offset voltage over temperature
- 20 mA maximum output current rating
- HBM ESD rating of ±2000 V
- CDM ESD rating of ±1000 V
- Multiple 8-pin package options including WSON-8
Typical Applications
- Voltage threshold comparison
- Dual-channel comparator circuits
- Ground-referenced input sensing
- TTL compatible signal interfacing
- MOS compatible signal interfacing
- CMOS compatible signal interfacing
- 2 to 30 V signal-chain systems
- WSON designs requiring grounded thermal pad
Procurement Notes
When requesting a quote for LM393, 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 inside the LM393?
The LM393 contains 2 independent voltage comparators. The pin functions provide separate input and output pins for comparator 1 and comparator 2, with shared GND and VCC pins in the listed 8-pin packages.
What supply range is recommended for LM393 non-B devices?
For LM393 non-B devices, the recommended operating supply voltage range is 2 to 30 V. The absolute maximum supply voltage range for LM393 non-B versions is listed separately as -0.3 to 36 V.
Does the LM393 input common-mode range include ground?
Yes. The extracted feature list states that the LM393 common-mode input range includes ground. The recommended input voltage range for LM393 non-B devices is 0 to (V+) - 2.0 V.
Which package options are listed for the LM393?
The listed package cases include SOIC-8, VSSOP-8, PDIP-8, SO-8, TSSOP-8, SOT-23-8, and WSON-8. The DSG WSON exposed-pad version specifies that the thermal pad should connect directly to GND.
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.