HCPL-0631#500

HCPL-0631 is a high‑speed optocoupler with a logic-gate output. It provides galvanic isolation between the input LED side and the output logic side, making it suitable for safely interfacing a microcontroller or logic circuit to higher‑voltage or noisy environments.
Key points:
- Output is TTL/CMOS‑compatible; output side powered by 4.5–5.5 V (typical).
- Input LED drive current in the a few mA range; CTR is designed to drive the output gate reliably.
- Isolation voltage is several kilovolts RMS (typical for such devices); good transient immunity for digital signals.
- Package options include 8‑pin DIP or surface‑mount variants.
- Applications: isolated microcontroller interfaces, power‑supply feedback, motor drives, and digital data isolation.
Note: “#500” likely refers to a package, lot, or revision code. For exact electrical specs (CTR, propagation delay, VISO, etc.), consult the HCPL-0631 datasheet or a distributor listing.

Equivalent parts to HCPL-0631#500 (high‑speed optocoupler, TTL/CMOS output):
- ACPL-0631 (Broadcom/Avago) – same family, cross reference
- 6N137 (Vishay/Fairchild) – high‑speed optocoupler with TTL output
- 6N138 (Vishay) – similar high‑speed optocoupler
Note: Check pinout, speed, and isolation ratings; variations exist between families.

Key features of HCPL-0631 (variant #500):
- High-speed optocoupler with logic-gate output
- 5 kV rms isolation between input and output
- TTL/CMOS-compatible totem-pole output
- Single 5V supply operation
- Wide operating temperature range (typical -40° to +125°C)
- Good common-mode transient immunity for noisy environments
- Low input current requirements with efficient LED drive
- Small 8-pin package options (DIP-8/SO-8) for easy PCB integration
- RoHS-compliant and suitable for robust, high-reliability applications
Note: exact numbers (data rate, propagation delay, CTR, input current, CMR, etc.) vary by device lot and condition. Please consult the latest datasheet for precise specifications.

HCPL-0631#500 is an 8-pin device (DIP-8 / SO-8 package). Its function is a single-channel high‑speed optocoupler/optical isolator: two input pins for the LED (anode, cathode) on the input side, and on the output side VCC, GND and the TTL/CMOS-compatible output circuitry (output pin(s) — typically an open-collector or push‑pull logic output depending on variant) to transfer digital signals across a galvanic isolation barrier. It provides high-speed digital isolation between input and output circuits.

- Manufacturer: Broadcom Inc. ( Avago Technologies legacy; HCPL-0631 is one of Avago’s optocouplers now under Broadcom).
- What kind of company: A multinational semiconductor company that designs, develops, and manufactures a wide range of semiconductor devices, including optoelectronic components.

HCPL-0631 is a high‑speed optically isolated digital coupler. Typical applications:
- Isolating microcontroller/DSP logic from high‑voltage/noise power electronics
- Isolated I/O and data links in industrial controls and PLCs
- Fast digital line receivers and interfaces (SPI/I2C/UART, RS-485/RS-232)
- Gate‑drive isolation for switch‑mode power supplies and motor drives
- Instrumentation and measurement front ends requiring galvanic isolation
- Medical, telecom, and safety‑critical equipment where electrical isolation is required

HCPL-0631#500 is supplied in an 8-pin DIP (DIP-8) through-hole package.