DS1020S-15+

Overview

The DS1020S-15+ is a programmable 8-bit silicon delay line manufactured by Analog Devices Inc./Maxim Integrated. It provides a maximum delay of 48.25 ns with an incremental step of 0.15 ns and an inherent step-zero delay of 10 ns. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports a serial clock frequency up to 10 MHz. It features both rising and falling edge accuracy and is housed in a 16-pin SOIC package.

Feature Summary

• Supports programming via a 3-wire serial port or an 8-bit parallel port for flexible configuration.
• Provides accurate timing reproduction on both rising and falling edges of the input signal.
• Compatible with TTL and CMOS logic families, capable of driving multiple standard loads.

Applications

• Precision timing control in digital systems requiring adjustable delays.
• Programmable pulse width generation and shaping circuits.
• Clock distribution networks needing specific phase adjustments.

Procurement Notes

Verify component authenticity through authorized distributors or official manufacturer channels. Confirm RoHS compliance status and check for end-of-life notices, as availability may be restricted. Ensure the specific suffix matches the required package type before ordering.

Selection Notes

Select this model when a maximum delay near 48 ns is required. Compare against other series variants if longer delays are needed. Verify that the 16-pin SOIC package fits the board layout constraints. Ensure the system power supply remains stable within the specified voltage limits.

Part Context

This component belongs to the DS1020 family of programmable silicon delay lines. It serves as a low-power CMOS alternative to hybrid delay lines. The series offers various step sizes to accommodate different timing resolution requirements across industrial applications.

Replacement Considerations

Direct substitutes include other models from the DS1020 series such as DS1020S-25+, DS1020S-50+, DS1020S-100+, and DS1020S-200+. These share identical pinouts and functionality but offer different delay increments and maximum delay values.

FAQ

How is the delay value programmed?

The delay is set using either an 8-bit parallel port (P0-P7) or a 3-wire serial port (D, C, E). In serial mode, data is loaded MSB-to-LSB.

Can multiple devices be connected together?

Yes, multiple DS1020 units can be daisy-chained. The serial output (Q) of one device connects to the serial input (D) of the next.

What happens to unused pins?

Unused parallel inputs must be tied to defined logic levels. Unused serial pins (D and C) must also be connected to defined levels to prevent floating.