Renesas HA1631D03MMEL-E

Overview

HA1631D03MMEL-E from Renesas is a dual CMOS comparator with open-drain output, designed for low-voltage, ultra-low-power applications. It operates from 1.8 V to 5.5 V, draws only 5 µA typical supply current per comparator, and features 5 mV max input offset voltage, 1 pA typical input bias current, and rail-to-rail input common-mode range including ground - enabling direct use in battery-powered sensor interfaces and portable logic-level translation circuits.

For engineers reviewing the HA1631D03MMEL-E datasheet, HA1631D03MMEL-E pinout, HA1631D03MMEL-E application, or HA1631D03MMEL-E equivalent, this device is selected for precision threshold detection where output level shifting via external pull-up resistors is required, especially in mixed-voltage systems, low-noise analog monitoring, and space-constrained industrial control modules.

Technical Context

The HA1631D03MMEL-E implements two independent high-impedance comparators with open-drain outputs, allowing flexible output voltage translation through externally selected pull-up resistors. Its input stage supports common-mode voltages down to ground and up to VDD − 0.1 V, and its ESD-protected design ensures robustness in noisy environments.

Unlike push-pull variants (HA1631D01/D02), the HA1631D03MMEL-E omits internal output transistors for high-side drive - eliminating shoot-through risk and enabling wired-OR logic, I²C-compatible bus interfacing, and multi-source interrupt aggregation without external diodes.

Key Specifications

Pinout & Package

MMPAK-8 package (PLSP0008JC-A), 2.8 mm × 2.95 mm × 0.6 mm body, 0.65 mm pitch, Pb-free lead frame, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3702IDR and LMV393IPWR, the HA1631D03MMEL-E uniquely combines ground-sensing capability, 5 µA quiescent current, and open-drain flexibility - making it the only option among the three that supports true single-supply, ultra-low-power, multi-voltage threshold detection without external support components.

Availability

HA1631D03MMEL-E is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, and battery management systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for HA1631D03MMEL-E 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

Renesas Electronics is a global semiconductor leader delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and IoT markets, with strong IP in low-power analog and mixed-signal design.

The HA1631 series was developed specifically for ultra-low-power, space-constrained sensing and monitoring applications - emphasizing ground-referenced operation, nanoscale bias currents, and open-drain interoperability across voltage domains.

FAQ

What is the maximum supply voltage rating for HA1631D03MMEL-E?

The absolute maximum supply voltage for HA1631D03MMEL-E is 7.0 V, but the recommended operating range is 1.8 V to 5.5 V. Exceeding 5.5 V may degrade long-term reliability or trigger internal protection mechanisms. The device is optimized for low-voltage operation, and performance parameters like input offset and supply current are specified within the 1.8–5.5 V range. Always observe derating guidelines in the Absolute Maximum Ratings table of the HA1631D03MMEL-E datasheet.

Can HA1631D03MMEL-E drive an LED directly?

No, HA1631D03MMEL-E cannot drive an LED directly because its outputs are open-drain and lack internal pull-up capability. To light an LED, connect the anode to a positive supply (e.g., 3.3 V) and the cathode to VOUT1 or VOUT2, then add a current-limiting resistor between the supply and LED anode. The comparator will sink current only when active; ensure the LED forward current stays below the 28 mA absolute maximum sink rating. For active-high LED control, use an external pull-up to the desired logic voltage instead.

Does HA1631D03MMEL-E support rail-to-rail input common-mode range?

HA1631D03MMEL-E supports a common-mode input range from –0.1 V to VDD, which includes ground (VSS) and extends slightly below it - enabling true rail-to-rail operation relative to the supply rails. This allows direct interfacing with grounded sensors, DAC outputs, or resistive dividers without input biasing networks. Note that the upper limit is VDD (not VDD + 0.1 V), so inputs must not exceed the supply voltage, per the Absolute Maximum Ratings.

How does the 1 pA typical input bias current of HA1631D03MMEL-E impact high-impedance sensor interfaces?

The 1 pA typical input bias current of HA1631D03MMEL-E minimizes voltage error across high-impedance sources - for example, a 10 MΩ source impedance introduces only 10 µV offset (1 pA × 10 MΩ). This preserves accuracy in photodiode, thermistor, or capacitive sensor front-ends where leakage paths dominate error budgets. Unlike bipolar-input comparators (nA–µA bias), HA1631D03MMEL-E avoids signal attenuation and drift, making it ideal for precision thresholding in battery-powered instrumentation.

Is HA1631D03MMEL-E pin-compatible with other members of the HA1631Dxx family?

Yes, HA1631D03MMEL-E shares identical pinout and MMPAK-8 package with HA1631D01MM, HA1631D02MM, and HA1631D04MM. All four variants use the same VSS/VIN1+/VIN1−/VOUT1/VIN2+/VIN2−/VOUT2/VDD arrangement. However, output topology differs: HA1631D03MMEL-E and HA1631D04MM feature open-drain outputs, while HA1631D01MM and HA1631D02MM use push-pull. Swapping requires verifying external circuit compatibility - especially pull-up resistors and load configurations.