WD2143-01 Datasheet | Western Digital

WESTERN DIGITAL C ORPO RA TI ON WD2143-01 Four Phase Clock Generator Features - TRUE AND INVERTED OUTPUTS .. SINGLE 5 VOLT SUPPLY - TIL PATABLE .. ON CHIP OSCILLATOR o XTAL OR TIL CLOCK INPUTS .3 MHz OPERATION o TIL CLOCK OUTPUT o PROGRAMMABLE PULSE WIDTHS o PROGRAMMABLE PHASE WIDTHS o NO EXTERNAL CAPACITOR o NON-OVERLAPPING OUTPUTS GENERAL DESCRIPTION The WD2143-01 Four-Phase Clock Generator is a MOS/LSI device capable of generating four nonoverlapping clocks. The output pulse widths are controlled by tying an external resistor to the proper control inputs. All pulse widths may be set to the same width by tying the ~PW line through an external resistor. Each pulse width can also be individually programmed by tying a resistor through the appropriate 1111 PW - 11I4PW control inputs. In addition, the OSC OUT line provides a TTL square wave output at a divide-by-four of the crystal frequency. 1M <1>4 ~ </>3 4i2 </>2 ~ </>1 GND vee </>pw </>4PW </>3PW </>2PW </>1PW ose OUT XTAL 1 XTAL2 PIN CONNECTIONS </>1PW </>1 ~ </>2 4i2 </>3 T3 ¢4...