Specifications
| Type | Description |
|---|---|
| Part Number | LM393DR |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | SOIC-8 (D), 4.90 mm x 3.91 mm nominal body |
| Number of Comparators | 2 independent voltage comparators |
| Output Type Compatibility | TTL, MOS, and CMOS compatible |
| Common-Mode Input Range | Includes ground |
| Recommended Supply Voltage | 2 to 30 V |
| Absolute Maximum Supply Voltage | -0.3 to 36 V |
| Absolute Maximum Differential Input Voltage | -36 to 36 V |
| Absolute Maximum Input Voltage | -0.3 to 36 V |
| Absolute Maximum Output Voltage | -0.3 to 36 V |
| Absolute Maximum Output Current | 20 mA |
| Input Current Limit | -50 mA |
| Output Short-Circuit Duration to Ground | Unlimited |
| Operating Virtual-Junction Temperature | 150 °C |
| Storage Temperature | -65 to 150 °C |
| Recommended Input Voltage Range | 0 V to (V+) - 2.0 V |
| Operating Ambient Temperature | 0 to 70 °C |
| Family Supply Voltage | 2 to 30 V |
| Total Supply Current | 1 to 2.5 mA |
| ESD Rating HBM | 2000 V |
| ESD Rating CDM | ±1000 V |
| Input Offset Voltage | ±9 mV max |
| Input Bias Current | 25 nA typ, 250 nA max |
| Response Time | 1.3 µs typ |
| Junction-to-Ambient Thermal Resistance | 148.5 °C/W |
| Junction-to-Case Top Thermal Resistance | 90.2 °C/W |
| Junction-to-Board Thermal Resistance | 91.8 °C/W |
| Junction-to-Top Characterization Parameter | 38.5 °C/W |
| Junction-to-Board Characterization Parameter | 91.1 °C/W |
| Pin 1 Function | 1OUT, comparator 1 output |
| Pin 2 Function | 1IN-, comparator 1 negative input |
| Pin 3 Function | 1IN+, comparator 1 positive input |
| Pin 4 Function | GND, ground |
| Pin 5 Function | 2IN+, comparator 2 positive input |
| Pin 6 Function | 2IN-, comparator 2 negative input |
| Pin 7 Function | 2OUT, comparator 2 output |
| Pin 8 Function | VCC, positive supply |
| Datasheet Status | request_only |
Product Overview
LM393DR is a Texas Instruments dual voltage comparator for Signal_Chain designs. The device contains 2 independent voltage comparators, and its outputs are compatible with TTL, MOS, and CMOS logic interfaces. The common-mode input range includes ground, supporting comparison functions referenced to the low-side rail.
For LM393 non-V non-B devices, the recommended supply voltage range is 2 to 30 V, with a recommended input voltage range from 0 V to (V+) - 2.0 V. The LM393 and LM393A operating ambient temperature range is 0 to 70 °C. Family-level electrical values include 1 to 2.5 mA total supply current, ±9 mV maximum input offset voltage, 25 nA typical and 250 nA maximum input bias current, and 1.3 µs typical response time.
The LM393DR package is SOIC-8 (D), with a 4.90 mm x 3.91 mm nominal body. Pin functions include comparator 1 output and inputs, ground, comparator 2 inputs and output, and VCC positive supply. Thermal data for the D package includes 148.5 °C/W junction-to-ambient resistance.
Key Features
- 2 independent voltage comparators in one device
- TTL, MOS, and CMOS compatible outputs
- Common-mode input range includes ground
- Recommended supply voltage range of 2 to 30 V
- Recommended input voltage range from 0 V to V+ minus 2.0 V
- 1 to 2.5 mA total supply current
- ±9 mV maximum input offset voltage
- 25 nA typical input bias current
- 1.3 µs typical response time
- SOIC-8 package with defined comparator pinout
Typical Applications
- Voltage threshold detection
- Ground-referenced signal comparison
- TTL logic interface circuits
- MOS logic interface circuits
- CMOS logic interface circuits
- Dual-channel comparator circuits
- Signal-chain monitoring circuits
Procurement Notes
When requesting a quote for LM393DR, 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
What type of device is the LM393DR?
LM393DR is a Texas Instruments dual voltage comparator in the Signal_Chain category. The device contains 2 independent voltage comparators and is supplied in an SOIC-8 (D) package with a 4.90 mm x 3.91 mm nominal body.
What supply voltage range is recommended for LM393DR?
For LM393 non-V non-B devices over the operating free-air temperature range, the recommended supply voltage is 2 to 30 V. The family comparison also lists the LM393 and LM393A supply voltage range as 2 to 30 V.
What logic interfaces are compatible with the LM393DR output?
The LM393DR output compatibility listed in the feature data includes TTL, MOS, and CMOS. This makes the comparator output suitable for circuits using those logic interface families, within the stated voltage and operating limits.
What are the SOIC-8 pin functions for LM393DR?
The SOIC-8 pinout assigns pin 1 to 1OUT, pins 2 and 3 to comparator 1 inputs, pin 4 to ground, pins 5 and 6 to comparator 2 inputs, pin 7 to 2OUT, and pin 8 to VCC.
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.