DS1124U-25+T

Delay Lines IC Overview

The DS1124U-25+T is an 8-bit programmable timing element housed in a 10-pin µSOP package. It provides 256 delay intervals with a step size of 0.25ns, achieving total delays from 20ns to 84ns and an integral nonlinearity of ±3ns. The device operates on a single 5.0V supply (4.75V to 5.25V) within a temperature range of -40°C to +85°C. Serial programming utilizes a 3-wire interface with a maximum clock frequency of 10MHz. Electrical characteristics include an active current of up to 30mA, low-level output current of 8.0mA, and high-level output current of -1.0mA.

Delay Lines IC Feature Summary

• Features a 3-wire serial programming interface for adjusting delay settings across 256 intervals.
• Provides leading- and trailing-edge accuracy with CMOS/TTL compatible logic levels.
• Capable of delaying signals by a full period or more to adjust signal phase up to 360°.
• Supports cascading multiple devices onto the same bus using the serial data output pin.

Delay Lines IC Applications

• LCD Televisions
• Telecommunications systems
• Digital Test Equipment
• Digital Video Projection
• Signal Generators and Analyzers

Delay Lines IC Procurement Notes

Verify component authenticity through authorized channels due to discontinuation notices. Confirm RoHS compliance status as indicated in official documentation. Ensure proper power-supply decoupling with ceramic capacitors during implementation. Validate that the specific ordering suffix matches the required tape-and-reel packaging configuration.

Delay Lines IC Selection Notes

Select this component when precise digital delay adjustment is required without external discrete components. Consider the 0.25ns resolution and ±3ns nonlinearity for critical timing applications. Evaluate the 3-wire interface requirements against available microprocessor resources. Verify voltage compatibility with the specified 5.0V operating range.

Delay Lines IC Part Context

This part belongs to the DS1124 series of programmable timing elements manufactured by Analog Devices / Maxim Integrated. It serves as a direct functional replacement for the DS1021-25. The device integrates an 8-bit latch and shift register to control a programmable delay line architecture.

Delay Lines IC Replacement Considerations

The DS1021-25 is documented as a similar function alternative. Verify pinout compatibility and electrical specifications before substitution. Check for updated datasheet revisions regarding performance parameters.

Delay Lines IC FAQ

How is the delay value programmed?

The delay is programmed via a 3-wire serial interface consisting of Data (D), Clock (CLK), and Enable (E) pins. Eight bits are shifted into the device to select one of 256 intervals.

What is the minimum input pulse width requirement?

The minimum input pulse width is 40ns. Violating this parameter may impair timing accuracy or result in no output.

Can multiple DS1124 devices be used together?

Yes, multiple devices can be cascaded on the same 3-wire bus using the Q (Serial Data Output) pin to chain data between units.