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Texas Instruments LM2903IDRDL — Analog & Data Acquisition

LM2903IDRDL Dual General Purpose Comparator, -40°C to 125°C

MPNLM2903IDRDL
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Texas Instruments LM2903IDRDL, dual general-purpose comparator, open-collector rail-to-rail output, 2V to 30V supply, 1µs typ propagation delay, 8-SOIC package, -40°C to 125°C operating temperature.

Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM2903IDRDL specifications
ParameterValue
TypeGeneral Purpose
Output typeOpen-Collector, Rail-to-Rail
MountingSurface Mount
Voltage - input offset7mV @ 30V
Voltage - supply, single (Dual (±))2V ~ 30V, ±1V ~ 15V
Output current6mA @ 5V
Current - quiescent1mA
Current - input bias0.25µA @ 5V
Operating temperature-40°C ~ 125°C
PackageBulk
Case8-SOIC (0.154\", 3.90mm Width)
Number of elements2
Propagation delay1µs (Typ)

Product details

Supply range and input characteristics

The single-supply range spans 2 V to 30 V, or ±1 V to ±15 V with dual rails, which covers the common 5 V, 12 V, and 24 V industrial buses without an extra regulator. Maximum input offset voltage is 7 mV at 30 V supply, and maximum input bias current is 0.25 µA at 5 V — both figures are worst-case limits, not typicals, so the design-in margin must be budgeted against the full temperature sweep. Quiescent current maxes at 1 mA per device, which keeps the thermal load low in the 8-SOIC package even when both comparators are switching continuously.

Propagation delay and output drive

Typical propagation delay is 1 µs — this is the speed floor for the comparator loop. For overcurrent trip circuits or zero-crossing detection below 100 kHz, the 1 µs delay is adequate; above that, a faster comparator family is needed. The open-collector output sinks 6 mA typical at 5 V.

Frequently asked questions

Can the LM2903IDRDL replace the LM393?

The LM2903IDRDL is a pin-compatible functional upgrade from the LM393 family. Both are dual open-collector comparators in the same 8-SOIC footprint, but the LM2903IDRDL extends the temperature range to 125°C and the supply range to 30 V, where the LM393 is typically limited to 0°C to 70°C and 36 V maximum. The swap is straightforward for designs needing wider environmental margin.