The DS1040 Pulse Generator is a user-programmable one-shot with a choice of five precise pulse widths. Maximum widths range from 50 ns to 500 ns; increments range from 2.5 ns to 100 ns. For maximum flexibility in applications such as magneto-optical read/write disk laser power control, varieties are offered with equal and unequal increments. The DS1040 is offered in standard 8-pin DIPs and 8-pin mini-SOICs. Low cost and superior reliability over hybrid technology are achieved by the combination of a 100% CMOS silicon design and industry standard packaging. The DS1040 series of pulse generators provide a nominal width accuracy of ±5% or ±2 ns, whichever is greater. In response to the rising edge of the input (trigger) pulse, the DS1040 produces an output pulse with a width determined by the logic states of the three programming pins.
The Dallas DS1040 programmable one‑shot pulse generator provides five selectable pulse widths with fine increments. It is available in 8‑pin DIP and 8‑pin SOIC packages and offers both inverting and non‑inverting outputs.
The device operates from a 5 V supply, tolerates a wide temperature range, and includes three programming pins that set the pulse width. Electrical specifications, timing diagrams, and absolute maximum ratings are detailed for design reference.
| Pulse width range | 5 ns to 500 ns |
|---|---|
| Intrinsic delay | ≤ 10 ns |
| Output drive capability | Up to five 74LS loads per output |
| Supply voltage range | -0 V to +7.0 V |
The DS1040 can generate pulse widths up to 500 ns.
It has three parallel programming pins (P0‑P2) that set the pulse width.
The intrinsic delay is no more than 10 ns.