DS1020S/T&R

Overview

The DS1020S/T&R is a programmable 8-bit silicon delay line manufactured by Analog Devices Inc./Maxim Integrated. It provides user-programmable time delays using either a 3-wire serial port or an 8-bit parallel port. The device offers 256 equal steps of delay variation with an inherent step-zero delay of 10 ns. It operates within a supply voltage range of 4.75 V to 5.25 V and supports a maximum clock frequency of 10 MHz. The component is housed in a 16-pin SOIC package and functions reliably across an operating temperature range of 0°C to +70°C.

Feature Summary

• Supports dual programming interfaces via 3-wire serial port or 8-bit parallel port for flexible configuration.
• Provides precise leading and trailing edge accuracy for signal timing applications.
• Features low-power CMOS construction compatible with TTL and standard CMOS logic levels.
• Enables cascading multiple devices through serial output daisy-chaining capabilities.

Applications

• Precision timing control in digital systems
• Programmable delay generation for signal synchronization
• Timing adjustment in communication interface circuits

Procurement Notes

Verify the specific suffix designation when sourcing, as it determines the incremental delay step size. Confirm that the required delay resolution matches the available model variants. Ensure the procurement channel supplies components meeting the specified operating temperature and voltage parameters for reliable integration.

Selection Notes

Select the appropriate model variant based on the required total delay range and step resolution. The -15 variant offers the finest resolution at 0.15 ns per step, while higher number variants provide coarser steps up to 2 ns. Ensure the design accommodates the necessary settling time after any delay value changes to maintain timing accuracy.

Part Context

This component belongs to the DS1020 family of programmable silicon delay lines. It serves as an economical alternative to hybrid programmable delay lines. The series includes various models differentiated primarily by their delay step sizes and maximum delay times, all sharing the same core architecture and pinout.

Replacement Considerations

Direct replacements must match the 16-pin SOIC package and support both serial and parallel programming modes. Verify that substitute devices offer comparable delay accuracy and operate within the same 4.75 V to 5.25 V supply voltage range to ensure circuit compatibility.