DS1020S-25+T&R

Overview

The DS1020S-25+T&R is a programmable 8-bit silicon delay line manufactured by Analog Devices Inc./Maxim Integrated. It provides a maximum delay of 73.75 ns with an incremental step size of 0.25 ns and an inherent step-zero delay of 10 ns. The device operates on a single 5V supply (4.75V to 5.25V) within a commercial temperature range of 0°C to 70°C. It features TTL/CMOS-compatible inputs and outputs, supporting both 3-wire serial and 8-bit parallel programming interfaces. The component is housed in a 16-pin SOIC package.

Feature Summary

• Supports dual programming methods via 3-wire serial port or 8-bit parallel port for flexible system integration.
• Provides accurate leading and trailing edge timing reproduction without signal inversion.
• Enables cascading multiple units through serial daisy-chain architecture for expanded delay capabilities.

Applications

• Precision timing control in digital logic systems
• Programmable pulse width modulation circuits
• Clock signal delay generation

Procurement Notes

Verify the specific suffix +T&R indicates tape-and-reel packaging when sourcing from distributors. Confirm the manufacturer designation as Analog Devices Inc./Maxim Integrated. Ensure the operating voltage requirements align with standard 5V logic systems. Check for RoHS compliance status if environmental regulations apply to the target assembly process.

Selection Notes

Select this model for applications requiring a 0.25 ns step resolution and a total delay range up to 73.75 ns. Compare against DS1020S-15 for finer resolution or DS1020S-50 for broader delay ranges. Ensure the 16-pin SOIC footprint matches the PCB layout constraints. Verify that the 0°C to 70°C commercial temperature range meets the operational environment requirements.

Part Context

This component belongs to the DS1020 family of all-silicon programmable delay lines. It serves as a CMOS alternative to hybrid delay lines, offering economical timing solutions. The series includes variants with different step sizes ranging from 0.15 ns to 2 ns, all sharing the same 8-bit architecture and interface compatibility.

Replacement Considerations

DS1020S-25+ is the tube-packaged equivalent of the same electrical specification. DS1020S-250/T&R offers a different step size (250 ps) and higher maximum delay. DS1023S-200+T&R provides similar 8-bit programmability but with distinct functional variations.