DS1005M-250

Overview

The DS1005M-250 is a 5-tap all-silicon time delay line housed in an 8-pin DIP package. It provides five equally spaced output taps with delays ranging from 50 ns to 250 ns, corresponding to the -250 suffix. The device operates on a single +5V supply and features TTL/CMOS compatible logic levels. Delay accuracy is specified as ±2 ns or ±3%, whichever is greater, at 25°C. The operating temperature range extends from 0°C to 70°C. Each tap can drive up to ten 74LS loads, ensuring robust signal integrity across digital circuits.

Feature Summary

• Provides five equally spaced silicon-based delay taps for precise timing control
• Ensures stable and accurate delays over specified voltage and temperature ranges
• Features leading and trailing edge accuracy for both rising and falling signal transitions
• Compatible with standard TTL and CMOS logic families for easy integration

Applications

• Digital signal processing timing alignment
• Pulse width modulation circuit generation
• Sequential logic timing control
• Test equipment internal delay lines

Procurement Notes

Verify the specific ordering suffix matches the required package type, as the base model supports multiple form factors including 8-pin DIP, 14-pin DIP, and 16-pin SOIC. Confirm that the ambient operating environment remains within the 0°C to 70°C range to maintain specified delay accuracy. Ensure power supply decoupling is adequate, as active current consumption varies with load conditions. Check for custom delay availability if standard tap spacings do not meet design requirements.

Selection Notes

Select this component when fixed, equally spaced delays are required for digital timing applications. The 8-pin DIP variant offers space savings compared to the 14-pin version while maintaining pin compatibility for key signals. Consider the ±2 ns or ±3% accuracy specification against system jitter requirements. Verify that the input pulse width meets the minimum requirement of 40% of the Tap 5 delay to ensure proper operation. Evaluate thermal management needs given the active current specifications under maximum load conditions.

Part Context

This device belongs to the DS1005 family of all-silicon delay lines, which replaces older hybrid technology components. The family includes variants with different total delay times, such as the -60, -75, -100, -125, -150, -175, -200, and -250 models. The M suffix specifically denotes the 8-pin DIP package option, providing a compact footprint for surface-mount or through-hole assembly depending on the specific manufacturing process used.

Replacement Considerations

Direct replacements must match the 5-tap configuration and similar delay characteristics. Verify pinout compatibility, particularly for VCC, GND, IN, and TAP outputs, as package variations exist within the family. Ensure the replacement device supports the same supply voltage and logic level compatibility. Note that custom delays may be available directly from the manufacturer if exact standard values are insufficient.