8-Bit Programmable Timing Element


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.

On-chip gating is provided to allow the device to provide a pulse width modulated output, triggered by the input with duration set by the programmed value.

Alternatively the output signal may be inverted on chip, allowing the device to perform as a free-running oscillator if the output is (externally) connected to the input.
DS1023: Functional Block Diagram DS1023: Functional Block Diagram Enlarge+

Key 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
Part Number Functions Prog. Steps Prog. Step Size
Delay/ PW
Delay/ PW
ΔVSUPPLY Budgetary
min max See Notes
Delay Line
256 1 16.5 255
3-Wire Serial
8-Bit Parallel
5 ±5% $8.82 @1k
DS1023S-200  2 510 $8.82 @1k
DS1023S-25  0.25 63.75 $8.00 @1k
DS1023S-50  0.5 127.5 $8.00 @1k
DS1023S-500  5 1275 $8.82 @1k
See All Delay Lines (Programmable) (6)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Quality and Environmental Data

Product Reliability Reports: DS1023.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Related Resources