onsemi HCPL0630

Overview

HCPL0630 from Fairchild Semiconductor is a dual-channel, high-speed logic gate optocoupler with 10 MBit/s data rate, open-collector outputs, and CMOS-process detector for reduced power consumption. It provides galvanic isolation between input LED and output logic gates, operates across –40°C to +85°C, and delivers 13 mA minimum sink current per channel (fan-out of 8) at 5 mA input drive - used in isolated data transmission and switching power supply feedback loops.

For engineers reviewing the HCPL0630 datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, exact pin functions, real-world use cases in industrial interfaces and power systems, and two confirmed alternative parts with documented functional and application differences.

Technical Context

The HCPL0630 integrates two independent AlGaAs LEDs optically coupled to CMOS-based bipolar output stages - distinct from the bipolar-only process used in single-channel HCPL060x variants. Each channel features an open-collector logic gate output enabling wired-OR configuration and strobable enable control via dedicated pins.

It guarantees 10 MBit/s operation with propagation delays ≤75 ns (TPLH/TPHL), pulse width distortion ≤35 ns, and common-mode transient immunity of 5000 V/µs at |VCM| = 50 V - all specified over full industrial temperature range and validated using 350 Ω load and 15 pF capacitance test conditions.

Key Specifications

Pinout & Package

HCPL0630 is housed in an 8-pin Small Outline (SO-8) package with gull-wing leads, 1.27 mm pitch, and maximum lead coplanarity of 0.10 mm. Pin 1 is marked by a beveled corner or dot; device orientation follows JEDEC MS-012 standard.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel logic gate optocoupler applications.

Compared with ACPL-M61T and 6N137, HCPL0630 uniquely delivers dual-channel isolation with shared supply and ground in SO-8, lower ICC than 6N137, and wired-OR flexibility absent in ACPL-M61T - making it optimal for space-constrained, multi-signal industrial interfaces requiring coordinated timing and low standby power.

Availability

HCPL0630 is available at Aetrix Electronics and suitable for industrial motor drives, switching power supplies, computer peripheral interfaces, and isolated serial communication systems requiring stable component supply and long-term lifecycle support.

Supply support for HCPL0630 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

Fairchild Semiconductor was a U.S.-based analog and power IC manufacturer acquired by ON Semiconductor in 2016; its optocoupler portfolio remains widely deployed in industrial and automotive systems.

The HCPL06XX family was designed specifically for high-speed digital signal isolation in noise-prone environments - targeting applications demanding >10 MBd throughput, robust CMTI, and compact dual-channel integration.

FAQ

What is the maximum recommended input forward current for HCPL0630?

The absolute maximum DC forward input current per channel is 50 mA, but the recommended operating condition specifies 6.3 mA as a guard-banded value ensuring ≥20% CTR margin over life. For reliable 10 MBit/s operation with fan-out of 8, 5–7.5 mA is the typical design range - exceeding 10 mA increases self-heating and accelerates LED degradation without meaningful speed gain. HCPL0630 performance is characterized at 7.5 mA in switching tests.

Does HCPL0630 require external pull-up resistors on its outputs?

Yes, HCPL0630 outputs (Pins 4 and 6) are open-collector and require external pull-up resistors to VCC (Pin 3) or another logic rail. The datasheet specifies RL between 330 Ω and 4 kΩ for optimal speed/noise trade-off; 350 Ω is used in characterization for 10 MBit/s timing. Pull-ups must be placed close to the device, and VCC must be bypassed with ≥0.1 µF capacitor between Pins 3 and 5 to suppress switching noise affecting output stability. HCPL0630 does not include internal pull-ups.

How does HCPL0630 differ from HCPL0600 in terms of output architecture?

HCPL0630 uses a CMOS-process detector with bipolar transistors, resulting in lower supply current (ICCL = 21 mA max) and improved power efficiency. In contrast, HCPL0600 employs a pure bipolar process detector, drawing higher current (ICCL = 13 mA max for single channel, but scaled differently). Both share identical 10 MBit/s speed and SO-8 packaging, but HCPL0630's dual-channel layout (Pins 1/2 and 7/8 as separate inputs) differs from HCPL0600's single-input configuration - making them functionally and pinout-incompatible despite shared family naming.

What is the purpose of the enable functionality in HCPL0630?

HCPL0630 does not include an enable input - that feature is exclusive to single-channel variants HCPL0600, HCPL0601, and HCPL0611 (which have Pin 7 designated as Enable). HCPL0630 has no enable pin; Pins 7 and 8 are the cathode and anode of the second LED channel. This distinction is clearly shown in the "Dual-channel circuit drawing" on page 2 of the datasheet. Attempting to use HCPL0630 as a strobable device will fail due to missing enable circuitry and incompatible pin mapping.

Can HCPL0630 be used with 3.3 V logic systems?

HCPL0630's output stage is rated for VCC = 4.5–5.5 V only; it is not characterized or guaranteed for 3.3 V operation. While the output may function at 3.3 V with reduced noise margin and slower edges, VOL specification (0.6 V max) and fan-out capability assume 5 V supply. For true 3.3 V compatibility, consider alternatives like ACPL-K49T or Si87xx isolators. HCPL0630 must be powered from a clean 5 V rail, and its outputs should interface to 5 V logic or level-shifted to 3.3 V using external circuitry - never directly tied to 3.3 V inputs without protection.