6N139-500E

The 6N139-500E is a high‑speed optocoupler (digital optocoupler) in the 6N139 family. It provides galvanic isolation between input and output and TTL/CMOS‑level signaling on the output.
Key points:
- Input side: infrared LED (forward current typically up to ~20 mA).
- Output side: open‑collector transistor; output requires a pull‑up resistor to Vcc (often 5 V) to produce logic highs.
- Isolation: about 5 kV RMS between input and output.
- Speed: designed for fast digital signals (propagation delays in the sub‑microsecond range, depending on conditions).
- Package: 8‑pin DIP (variant suffix -500E may denote a specific packaging/lead‑free or reel option; check the datasheet for exact details).
Common uses:
- Isolated interfaces for microcontrollers and digital logic
- Isolated data paths in protection, motor control, or communication interfaces
Note: The -500E suffix is a variant spec (packaging/lead‑free/reel, etc.). Always consult the manufacturer’s datasheet for exact electrical specs, CTR ranges, and the precise meaning of the suffix for your lot.

6N139-500E features (concise):
- High-speed optocoupler with TTL-compatible open-collector output
- Isolation between input and output: 5 kV RMS
- Output side powered by 4.5–5.5 V; requires a pull-up resistor to Vcc
- Package: 8-pin DIP or SO-8; Pb-free (RoHS-compliant)
- Industrial temperature range: typically -40 °C to 85 °C
- LED input current: a few mA range; CTR depends on IF and temperature
- Suitable for isolated digital logic, microcontroller interfaces, and data transfer applications

8-pin DIP through-hole package (DIP-8) optocoupler.

- Pin count: 8 pins (DIP package).
- Function: High-speed optocoupler (photocoupler) with TTL-compatible output. Input LED on the input side (anode/cathode). Output side provides a TTL-level open-collector/transistor output with an enable input; requires Vcc, GND, and a pull-up on the output. The -500E suffix denotes an extended temperature/RoHS-compliant version.

Manufacturer: NEC Corporation (Nippon Electric Company).
NEC is a Japanese multinational electronics and information technology company that designs and manufactures semiconductors, IT systems, and communications equipment.

6N139-500E is a high-speed optocoupler with about 5 kV isolation, used to provide galvanic isolation between low-voltage logic and high-voltage circuitry. Applications: digital isolation for microcontroller interfaces; high-speed data links and line receivers; isolated feedback for switch-mode power supplies; PLCs and factory automation; instrumentation/measurement systems; telecom/data interfaces; motor drive and power-electronics control.

Equivalent products: Avago/Broadcom HCPL-0500 (ACPL-0500) high-speed optocoupler (TTL output); NEC/Renesas 6N139 (same device family). Related alternatives: 6N137/6N136 (different buffering). Always verify pinout and CTR in the datasheets for your exact need.