This document is a datasheet of HEF4047B MSI Monostable/astable multivibrator. The chip contains logic techniques to realize positive or negative edge-triggered monostable multivibrator with retriggering and external counting options.
The HEF4047B is a monostable (one‑shot) or astable (free‑running) multivibrator IC from Philips Semiconductors. It provides gated outputs, edge‑triggered operation, retriggering, and optional external counting.
The document includes functional and pin diagrams, electrical DC/AC characteristics, typical propagation delays, application notes, and power‑consumption curves for various supply voltages.
| Package (HEF4047BP(N)) | 14‑lead DIL, plastic |
|---|---|
| Package (HEF4047BD(F)) | 14‑lead DIL, ceramic |
| Package (HEF4047BT(D)) | 14‑lead SO, plastic |
| Propagation delay (ASTABLE to OSC. OUTPUT) typical | 68 ns + (0.55 ns/pF) C |
| Output transition time typical | 10 ns + (1.0 ns/pF) C |
Only one external resistor and one external capacitor are needed for all modes.