STMicroelectronics LM393DT
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mfr | STMicroelectronics |
| Mounting Type | Surface Mount |
| Operating Temperature | 0°C ~ 70°C |
| Type | General Purpose |
| Output Type | CMOS, DTL, ECL, MOS, Open-Collector, TTL |
| Number of Elements | 2 |
| Supplier Device Package | 8-SOIC |
| Hysteresis | - |
| Voltage - Supply, Single/Dual (±) | 2V ~ 36V, ±1V ~ 18V |
| Voltage - Input Offset (Max) | 5mV @ 30V |
| Current - Input Bias (Max) | 0.25µA @ 5V |
| Current - Output (Typ) | 18mA @ 5V |
| Current - Quiescent (Max) | 2.5mA |
| CMRR, PSRR (Typ) | - |
| Propagation Delay (Max) | - |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | LM393 |
| REACH Status | REACH Unaffected |
| Standard Package | 2,500 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
LM393DT Low-Power Dual Voltage Comparator
The LM393DT is a dual-channel, low-power voltage comparator designed by STMicroelectronics for high-precision analog signal processing. Operating across a wide supply voltage range of 2V to 36V (single-supply) or ±1V to ±18V (dual-supply), it excels in battery-powered and industrial applications. Each comparator features a low input bias current of 25nA (typical) and input offset voltage of 1mV (typical), ensuring minimal error in signal comparison. The device supports open-collector outputs, compatible with TTL, CMOS, MOS, and ECL logic levels, enabling flexible interfacing. With a propagation delay of 1.3µs (typical) and output current of 18mA (typical), it balances speed and drive capability.
LM393DT Applications
The LM393DT is ideal for voltage monitoring, threshold detection, and signal conditioning in automotive systems, industrial automation, and consumer electronics. Common applications include battery charge control, overvoltage/undervoltage protection, and sensor interface circuits. Its ability to operate from a single supply while handling ground-referenced input signals simplifies circuit design. In oscillators and pulse generators, it provides reliable edge detection, while in motor control systems, it monitors current or voltage feedback.
Alternative Analog Comparator Models
● LM339 (TI): A quad comparator offering higher channel density, suitable for cost-sensitive designs requiring four independent channels.
● LMV393 (TI): An ultra-low-power dual comparator consuming just 50µA, optimized for battery-powered IoT devices.
● TLC393 (TI): A low-power dual comparator with 1mV offset voltage, designed for high-accuracy medical instrumentation.
● LM2903 (ON Semi): A dual comparator with ±18V dual-supply capability, targeting industrial control systems.
