Analog Devices Inc./Maxim Integrated DS1040Z-500

Overview

DS1040Z-500 from Dallas Semiconductor (now Maxim Integrated) is a CMOS programmable one-shot pulse generator with five fixed, factory-set pulse widths up to 500 ns, rising-edge triggered, providing both inverted and non-inverted outputs, and designed for laser power control in magneto-optical disk systems.

For engineers reviewing the DS1040Z-500 datasheet, DS1040Z-500 pinout, DS1040Z-500 application, or DS1040Z-500 equivalent, key selection criteria include intrinsic delay ≤10 ns, width tolerance of ±(5% or 2 ns), dual complementary outputs, 8-pin SOIC package, and TTL/CMOS compatibility at V_CC = 5.0 V ±5%.

Technical Context

The DS1040Z-500 implements a parallel-programmed monostable multivibrator using all-silicon CMOS logic, where three programming pins (P0–P2) select one of eight possible output widths - five of which are active for this variant (100 ns to 500 ns in unequal increments). It features no internal oscillator or RC timing network.

Timing is referenced to the 1.5 V threshold on input and output edges; intrinsic delay is measured between 1.5 V points, and pulse width is defined as time between 1.5 V leading and trailing edges. Output drive capability supports up to five 74LS loads per output.

Key Specifications

Pinout & Package

DS1040Z-500 is housed in an 8-pin mini-SOIC (150-mil width) package, surface-mount compatible with vapor phase, IR, and wave soldering processes.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable one-shot applications.

Compared with DS1040M-500 and MAX7360, the DS1040Z-500 delivers optimal trade-off of fixed-precision timing, zero-config simplicity, and SMT manufacturability - ideal for cost-sensitive, high-volume optical control where width is set once per design.

Availability

DS1040Z-500 is available at Aetrix Electronics and suitable for magneto-optical storage systems, industrial timing calibration fixtures, logic debouncing circuits, and edge-conditioning subsystems requiring stable component supply and long-term obsolescence management.

Supply support for DS1040Z-500 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Dallas Semiconductor, now part of Maxim Integrated (a subsidiary of Analog Devices), specialized in precision timing, data communication, and mixed-signal ICs for industrial and embedded applications.

The DS1040 series was designed specifically to replace hybrid and RC-based one-shots in optical storage, test equipment, and real-time control systems demanding repeatable, temperature-stable pulse generation without software overhead.

FAQ

What is the maximum guaranteed pulse width for DS1040Z-500?

The DS1040Z-500 is factory-programmed for a maximum pulse width of 500 ns, with actual width guaranteed within ±(5% or 2 ns) across operating temperature and supply voltage. This value corresponds to the P2=1, P1=1, P0=1 programming state per Table 1 in the datasheet. The DS1040Z-500 does not support widths beyond 500 ns.

Does DS1040Z-500 require external components to operate?

No, the DS1040Z-500 operates as a fully self-contained one-shot and requires only a 0.1 µF ceramic decoupling capacitor between V_CC and GND. No external resistors or capacitors are needed for timing - all pulse width selection is handled internally via the P0–P2 programming pins. The DS1040Z-500 is designed for plug-and-play use in timing-critical paths.

Can DS1040Z-500 drive standard TTL logic directly?

Yes, the DS1040Z-500 can drive up to five 74LS loads per output, meeting TTL voltage thresholds (V_OH ≥ 2.4 V, V_OL ≤ 0.5 V) at V_CC = 5.0 V ±5%. Its output current capability (I_OL = 8 mA, I_OH = –1 mA) satisfies standard TTL fan-out requirements without buffering. This makes DS1040Z-500 suitable for direct interface with legacy logic families.

What is the intrinsic delay specification for DS1040Z-500?

The intrinsic delay (t_D) of DS1040Z-500 is specified as 0 ns (minimum), 5 ns (typical), and 10 ns (maximum) - measured between the 1.5 V point on the rising edge of the IN trigger and the 1.5 V point on the rising edge of the OUT pulse. This delay is independent of programmed width and remains constant across all five width settings of the DS1040Z-500.

Is DS1040Z-500 RoHS compliant and lead-free?

Yes, DS1040Z-500 is RoHS compliant and manufactured with lead-free terminations. The 8-pin mini-SOIC package uses matte tin plating and meets JEDEC J-STD-020 moisture sensitivity level (MSL) 1 specifications. Full compliance documentation, including substance declarations and test reports, is available upon request for DS1040Z-500.