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.
The DS1123L is an 8‑bit programmable timing element that can delay signals up to a full period or more, providing phase adjustment over a 360° range. It can be programmed via an 8‑bit parallel interface or a 3‑wire serial interface, and can also operate as a monostable vibrator or an adjustable frequency oscillator.
The device operates from a single 3.3 V supply and is offered in four step‑size variants (0.25 ns to 2 ns). Electrical specifications include a supply voltage of +3.0 V to +3.6 V, input logic thresholds, and current ratings. Pin‑out details, timing diagrams, and application notes are provided for proper integration.
| Supply Voltage | +3.0 V to +3.6 V |
|---|---|
| Input Logic High (VIH) | 0.7 VCC + 0.3 V |
| Input Logic Low (VIL) | -0.3 V to +0.3 V |
| Active and Standby Current | 16 mA to 30 mA |
| High‑Level Output Current | 1.0 mA |
| Low‑Level Output Current | 40 mA |
| Serial Clock Frequency | 10 MHz |
| Delay Step Size (DS1123L‑25) | 0.25 ns |
| Maximum Delay (DS1123L‑200) | 527 ns |
| Number of Delay Intervals | 256 |
The device operates from +3.0 V to +3.6 V.
It provides 256 programmable delay steps.
The DS1123L can be programmed using an 8‑bit parallel interface or a 3‑wire serial interface.