Diodes Incorporated AP393ASG-13

Overview

AP393ASG-13 from Diodes Incorporated is a dual precision voltage comparator IC with low offset voltage (±4 mV max), ultra-low supply current (0.4 mA typical), and rail-to-rail input common-mode range including ground-enabling single-supply sensing near 0 V. It features open-collector outputs compatible with TTL, CMOS, ECL, and MOS logic, housed in an SOP-8L package, and is widely used in battery-powered limit detection and analog-to-digital interface circuits.

For engineers reviewing the AP393ASG-13 datasheet, AP393ASG-13 pinout, AP393ASG-13 application, or AP393ASG-13 equivalent, key selection criteria include input offset voltage stability over temperature, single-supply ground-sensing capability, output sink current (6–16 mA), and compatibility with mixed-voltage logic systems without level-shifting.

Technical Context

The AP393ASG-13 integrates two independent PNP-input comparators with matched internal biasing, delivering stable 0.4 mA supply current across 2.0–36 V single or ±1.0–±18 V dual supplies. Its input stage allows common-mode voltages down to ground and up to V_CC − 1.5 V at 25°C, while differential input voltage tolerance reaches ±36 V.

Each comparator uses an uncommitted NPN output transistor with 250 mV saturation voltage at 4 mA sink load, enabling wired-OR configurations and flexible pull-up to any compatible rail. The device avoids oscillation via inherent low gain-bandwidth design but benefits from hysteresis for noisy inputs-especially in multivibrator or time-delay generator topologies.

Key Specifications

Pinout & Package

SOP-8L surface-mount package (5.90 × 4.90 × 1.75 mm), RoHS-compliant, green molding compound, lead-free finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual comparator applications.

Compared with LM393DR and TLV3702IDR, the AP393ASG-13 uniquely balances 36 V operation, ±4 mV offset, and 0.4 mA supply current in a standard SOP-8L footprint-making it optimal for industrial sensor interfaces where wide supply range and precision coexist.

Availability

AP393ASG-13 is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial voltage monitoring, and mixed-signal timing circuits requiring stable component supply across extended temperature and voltage ranges.

Supply support for AP393ASG-13 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, application-optimized components for industrial, computing, and consumer markets.

The AP393A belongs to Diodes' precision comparator product line, designed specifically for single-supply, ground-sensing applications in resource-constrained systems where low power and accuracy are jointly critical.

FAQ

Can AP393ASG-13 operate from a 3.3 V supply?

Yes. The AP393ASG-13 supports single-supply operation from 2.0 V to 36 V, including 3.3 V. At 3.3 V, its input common-mode range spans 0 V to ~1.8 V, and output saturation remains below 250 mV at 4 mA sink-ensuring robust logic-level compatibility with 3.3 V CMOS systems.

Does AP393ASG-13 require external hysteresis for noise immunity?

Not always-but recommended for noisy environments. The device lacks internal hysteresis; adding 1–10 mV positive feedback via resistor networks prevents false triggering on slow or noisy inputs. In clean-signal applications like crystal oscillators or zero-crossing detection with filtered inputs, hysteresis may be omitted.

What is the maximum sink current per output?

The absolute maximum sink current is 20 mA (continuous), but the datasheet specifies 6.0–16 mA typical under test conditions (V_IN− = 1 V, V_IN+ = 0 V, V_O ≤ 1.5 V). For reliable long-term operation, limit sustained sink current to ≤12 mA to maintain <300 mV saturation voltage and avoid thermal stress.

Is AP393ASG-13 pin-compatible with LM393?

No. Although both are dual comparators in SOP-8L packages, AP393ASG-13 has pin 4 = GND and pin 8 = V+, whereas LM393 uses pin 4 = V− and pin 8 = V+. Swapping them causes functional failure. Layout redesign and schematic update are required for substitution.