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Product Detailed Parameters
- Description：IC COMPARATOR 2 DIFF 8SOIC
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Tape & Reel (TR),Cut Tape (CT)
- Type：General Purpose
- Number of Elements：2
- Output Type：-
- Voltage - Supply, Single/Dual (±)：2V ~ 36V, ±1V ~ 18V
- Voltage - Input Offset (Max)：2mV @ 5V
- Current - Input Bias (Max)：0.25µA @ 5V
- Current - Output (Typ)：18mA @ 5V
- Current - Quiescent (Max)：2.5mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：0°C ~ 70°C
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The LM393AMX is a dual analog comparator manufactured by onsemi, housed in an SOIC-8 surface-mount package. It operates within a supply voltage range of 18 V to 36 V and draws a typical operating current of 2 mA. The device features open collector outputs capable of sourcing up to 18 mA per channel. Key electrical specifications include a response time of 1.3 µs, an input offset voltage (Vos) of 2 mV, and an input bias current (Ib) of 250 nA. It functions reliably across a temperature range of 0°C to +70°C with a power dissipation rating of 480 mW.
Feature Summary
- Dual independent precision voltage comparators designed for single or split supply operation
- Open collector output configuration compatible with TTL, DTL, ECL, MOS, and CMOS logic levels
- Input common-mode voltage range includes ground level during single supply operation
Applications
- Limit comparators
- Simple analog-to-digital converters
- Pulse and squarewave generators
- Time delay generators
- Wide range voltage-controlled oscillators
Procurement Notes
Verify the specific manufacturer designation as sources list both onsemi and Fairchild variants under this part number. Confirm RoHS compliance status directly from the supplier documentation. Check availability status as some distributors indicate discontinued or limited stock conditions. Ensure the SOIC-8 package matches the design requirements before finalizing procurement orders.
Selection Notes
Select this component when low input offset voltage and wide single-supply operation are required. The open collector output allows flexible interfacing with various logic families without additional level shifting circuitry. Consider the 1.3 µs response time for timing-sensitive applications. Verify that the 2 mA supply current meets the system's power budget constraints.
Part Context
The LM393 series consists of two independent low-voltage comparators designed specifically for single-supply operation over a wide voltage range. This variant belongs to the LM393A series, offering improved offset voltage specifications compared to standard versions. The device eliminates the need for dual supplies while maintaining high precision performance suitable for consumer, automotive, and industrial electronics.
Replacement Considerations
LM2903: Industrial grade version with extended temperature range. LM193: Military grade version. TLV1701: Rail-to-rail input/output alternative.
