Dual comparator targets industrial, medical applications

Santa Clara, Calif. — National Semiconductor developed the LMH7322, a dual comparator which consumes low power (21 mA typical) with sub-nanosecond (700 ps) propagation delay. The LMH7322 joins the LMH7220 single comparator as part of a family of single, dual and quad high-speed comparators which feature low-voltage differential signaling (LVDS) and reduced-swing positive emitter-coupled logic (RSPECL) outputs.

The LMH7322 is a high-speed, dual comparator which operates from an input supply-voltage range of 2.7 V to 12 V. The device features an input common-mode range which extends 200 mV below the negative rail, and its adjustable hysteresis adds flexibility and minimizes state changes due to spurious noise. The LMH7322 provides fast rise and fall times of 160 ps, and its RSPECL outputs and latch inputs reduce EMI.

The comparator delivers 700 ps propagation delay and dispersion of 5 ps at >100 mV overdrive, which allows accurate delay control. Separate input and output supply pins enable level-shifting applications, while the devices' typical power consumption of 21 mA makes the LMH7322 well-suited for power-sensitive applications. The LMH7220's 2.9 ns typical propagation delay and 0.6 ns rise and fall times consume 6.8 mA supply current at 5 V. Both parts offer performance from -40°C to 125°C.

Availability: Now
Pricing: $4.31 USD
Data Sheet: LMH7322

National Semiconductor, 800-272-9959,

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