DS1023

DS1023 8-Bit Programmable Timing Element www.dalsemi.com FEATURES Step sizes of 0.25 ns, 0.5 ns, 1 ns, 2 ns, 5 ns On-chip reference delay Configurable as delay line, pulse width modulator, or free-running oscillator Can delay clocks by a full period or more Guaranteed monotonicity Parallel or serial programming Single 5V supply 16-pin DIP or SOIC package PIN ASSIGNMENT IN LE Q/P0 CLK/P1 D/P2 P3 P4 GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC OUT/OUT P/S P7 P6 MS P5 REF/PWM DS1023 300-mil DIP DS1023S 300-mil SOIC PIN DESCRIPTION IN P0/Q P1/CLK P2/D P3 - P7 GND OUT/ OUT REF/PWM P /S MS LE VCC - Input - Parallel Input P0 (parallel mode) - Serial Data Output (serial mode) - Parallel Input P1 (parallel mode) - Serial Input Clock (serial mode) - Parallel Input P2 (parallel mode) - Serial Data Input (serial mode) - Remaining Parallel Inputs - Ground - Output - Reference or PWM Output - Parallel / Serial Programming Select - Output Mode Select - Input Latch Enable - Supply Voltage DESCRIPTION The DS1023 is an 8-bit programmable delay line similar in function to the DS1020/DS1021. Additional features have been added to extend the range of applications: The internal delay line architecture has been revised to allow clock signals to be delayed by up to a full period or more. Combined with an on-chip reference delay (to offset the inherent or “step zero” delay of the device) clock phase can now be varied over the full 0-360 degree range. 1 of 16 022300 DS1023 On-chip gating is p...