Renesas HA1631S04CMEL-E

Overview

HA1631S04CMEL-E from Renesas Electronics is a single CMOS comparator with open-drain output, designed for ultra-low-power, single-supply operation from 1.8 V to 5.5 V. It delivers 50 μA typical supply current at 3.0 V, 5 mV max input offset voltage, 1 pA typical input bias current, and supports rail-to-rail input common-mode range including ground-enabling precision threshold detection in battery-powered sensor interfaces and portable instrumentation.

For engineers reviewing the HA1631S04CMEL-E datasheet, HA1631S04CMEL-E pinout, HA1631S04CMEL-E application, or HA1631S04CMEL-E equivalent, this page provides verified electrical specifications, package mapping to CMPAK-5 (SC-88A), functional context for open-drain level-shifting use cases, and validated alternative options for low-voltage comparator selection.

Technical Context

The HA1631S04CMEL-E implements a CMOS-input differential amplifier stage followed by an open-drain NMOS output transistor, eliminating internal pull-up and enabling flexible external voltage translation via user-defined pull-up resistors. Its input stage features ESD protection and operates down to 1.8 V while maintaining sub-5 mV offset and femtoampere-level bias current.

This variant belongs to the HA1631S01–04 family's high-current tier (50 μA typ), optimized for faster response-0.17 μs typical propagation delay (TPHL) and 7 ns typical fall time (tf) at 3.0 V with 15 pF load-while retaining ultra-small footprint and ground-sensing capability critical for analog front-end signal conditioning.

Key Specifications

Pinout & Package

CMPAK-5 (JEITA SC-88A) surface-mount package: 1.8 mm × 1.15 mm × 0.8 mm profile, Pb-free lead frame, 5-pin ultra-compact footprint occupying 1/8 the area of SOP-8.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HA1631S04CMEL-E, TLC3702CDR offers higher drive strength but forfeits level-shifting capability and increases PCB area, while NCS2200MUTAG reduces power by 82% but sacrifices 9x propagation speed and ground-sensing precision-making HA1631S04CMEL-E optimal for compact, fast, ground-referenced open-drain applications.

Availability

HA1631S04CMEL-E is available at Aetrix Electronics and suitable for battery-powered wearables, industrial sensor nodes, and USB-C accessory designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for HA1631S04CMEL-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 emphasis on reliability and energy efficiency.

The HA1631S series was developed specifically for ultra-low-power, single-supply analog signal conditioning in space-constrained portable and sensor-edge applications-prioritizing ground-sensing inputs, open-drain flexibility, and minimal quiescent current.

FAQ

What is the maximum operating supply voltage for HA1631S04CMEL-E?

The absolute maximum supply voltage for HA1631S04CMEL-E is 7.0 V, but the recommended operating range is 1.8 V to 5.5 V per the datasheet's Electrical Characteristics table. Exceeding 5.5 V risks parametric degradation or latch-up, especially under temperature extremes. HA1631S04CMEL-E maintains full specification compliance only within the 1.8–5.5 V window.

Does HA1631S04CMEL-E support rail-to-rail input common-mode voltage?

HA1631S04CMEL-E supports input common-mode voltage from –0.1 V to 2.1 V at VDD = 3.0 V, which includes ground (0 V) but does not extend to VDD. It is not a full rail-to-rail input device. The upper limit is VDD – 0.9 V, limiting direct sensing of signals near VDD without attenuation or level shifting.

Can HA1631S04CMEL-E drive a 10 kΩ pull-up resistor to 5 V while powered from 3.3 V?

Yes - HA1631S04CMEL-E's open-drain output can sink up to 14 mA (min) and is fully compatible with external pull-up resistors tied to voltages higher than VDD, including 5 V. When powered from 3.3 V, it safely interfaces with 5 V logic buses, provided the output voltage does not exceed the absolute maximum rating of 7.0 V.

What is the typical propagation delay of HA1631S04CMEL-E at 1.8 V supply?

While the datasheet specifies propagation delay only at VDD = 3.0 V (TPHL = 0.17 μs typ), Figure 4-1 shows supply current remains stable down to 1.8 V, and Figure 4-12 confirms falling time stays below 15 ns across temperature at 1.8 V. Based on family characterization, HA1631S04CMEL-E maintains sub-0.5 μs delay at 1.8 V, though exact TPHL/TPHL values are not published for that voltage.

Is HA1631S04CMEL-E pin-compatible with other variants in the HA1631S01–04 series?

Yes - all HA1631S01–04 variants share identical pinout and CMPAK-5 package dimensions. HA1631S04CMEL-E uses the same 5-pin arrangement (VIN+, VSS, VIN−, VDD, VOUT) as HA1631S01CM, HA1631S02CM, and HA1631S03CM, enabling drop-in substitution where open-drain functionality and 50 μA supply current are required.