3.3V, 8-Bit, Programmable Timing Element


The DS1123L is an 8-bit programmable timing element similar in function to the DS1023, but operating at 3.3V. Like the DS1023, the DS1123L can delay signals up to a full period or more when used as a delay line, and an on-chip reference delay can be used to offset the inherent "step-zero" delay. This allows the DS1123L to shift a clock signal over the full 0 to 360° phase range. In addition to functioning as a delay line, it can be configured as a free-running oscillator or an externally triggered monostable vibrator.
DS1123L: Typical Operating Circuit DS1123L: Typical Operating Circuit Enlarge+

Key Features

  • Step Sizes of 0.25ns, 0.5ns, 1ns, 2ns
  • On-Chip Reference Delay
  • Configurable as a Delay Line, Monostable Vibrator, or Free-Running Oscillator
  • Can Delay Signals by a Full Period or More
  • Guaranteed Monotonicity
  • Parallel and 3-Wire Serial Programming Interface
  • Single 3.3V Power Supply
  • 16-pin TSSOP


  • Digital Test Equipment
  • Digital Video Projection
  • Signal Generators and Analyzers
  • Telecommunications
Part Number Functions Prog. Steps Delay/ PW
Delay/ PW
Prog. I/F Budgetary
min max See Notes
Delay Line
256 16.5 527 3-Wire Serial $5.25 @1k
See All Delay Lines (Programmable) (7)
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: DS1123L.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Related Resources