Analog Devices Inc./Maxim Integrated DS1040Z-100

Overview

DS1040Z-100 from Dallas Semiconductor (now Maxim Integrated) is a rising-edge-triggered, CMOS programmable one-shot pulse generator with five precise pulse width options, 100 ns maximum width, ±5% or ±2 ns width tolerance, and dual non-inverted/inverted outputs. It serves as a timing control element in laser power modulation for magneto-optical disk read/write systems.

For engineers reviewing the DS1040Z-100 datasheet, DS1040Z-100 pinout, DS1040Z-100 application, or DS1040Z-100 equivalent, key selection criteria include programmable width resolution (20–100 ns), intrinsic delay ≤10 ns, TTL/CMOS compatibility, and SOIC-8 packaging for surface-mount integration in high-reliability embedded timing circuits.

Technical Context

The DS1040Z-100 implements a parallel-programmed monostable multivibrator architecture using all-silicon CMOS logic. Pulse width is selected via three binary-coded programming pins (P0–P2), with fixed width mapping per part number - DS1040Z-100 delivers max width = 100 ns, min width = 20 ns, and increments of 20 ns across its five output states.

It features dual complementary outputs (OUT and OUT̅), each capable of driving up to five 74LS loads, with intrinsic propagation delay bounded at 0–10 ns and guaranteed operation over 0°C to +70°C. Power-up stabilization requires ≤100 ms before timing specifications are valid.

Key Specifications

Pinout & Package

DS1040Z-100 is housed in an 8-pin mini-SOIC (150-mil width) package, RoHS-compliant and vapor-phase/wave-solderable.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DS1040Z-100, DS1040M-100 offers identical timing behavior in through-hole form, while MAX5072AESA+ trades deterministic fixed-width simplicity for software-configurable flexibility - making DS1040Z-100 optimal for cost-sensitive, static-timing applications requiring minimal BOM count and zero firmware overhead.

Availability

DS1040Z-100 is available at Aetrix Electronics and suitable for magneto-optical storage systems, industrial test instrumentation, digital logic conditioning circuits, and embedded timing modules requiring stable component supply and long-term obsolescence management.

Supply support for DS1040Z-100 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, memory, and mixed-signal interface ICs for industrial and computing applications.

The DS1040 series was designed specifically for fixed-width, low-jitter pulse generation in optical storage, test equipment, and logic synchronization - prioritizing silicon reliability, tight width tolerance, and drop-in replaceability over programmability.

FAQ

What is the guaranteed pulse width accuracy for DS1040Z-100?

The DS1040Z-100 guarantees pulse width accuracy of ±5% or ±2 ns, whichever is greater, across its full operating temperature range (0°C to +70°C). This specification is confirmed in the AC Electrical Characteristics table and applies to all five programmed widths - including the 100 ns maximum width. The DS1040Z-100 achieves this via all-silicon CMOS design and factory-trimmed timing elements, eliminating hybrid component drift.

Does DS1040Z-100 require external components to operate?

No, the DS1040Z-100 operates autonomously with only a +5 V supply and ground connection. A 0.1 µF ceramic bypass capacitor between VCC and GND is strongly recommended but not strictly required for basic functionality. No external resistors, capacitors, or clock sources are needed - pulse width is set solely by the logic states on P0–P2, and triggering occurs on the rising edge of the IN signal.

Can DS1040Z-100 drive standard TTL loads directly?

Yes, DS1040Z-100 can directly drive up to five 74LS loads per output (OUT or OUT̅), as specified in the DC Electrical Characteristics table. Its output low current (IOL) is rated at 8 mA minimum and high output current (IOH) at –1 mA, meeting 74LS input thresholds. For heavier loads or longer traces, a 74F or 74ACT buffer is advised, but no level-shifting circuitry is required for standard TTL/CMOS interfacing.

What is the intrinsic delay of DS1040Z-100, and how is it measured?

The intrinsic delay (tD) of DS1040Z-100 is 0–10 ns, defined as the time 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 parameter is measured under controlled test conditions (VCC = 5.0 V ±0.1 V, TA = 25°C) using a time interval analyzer with 20 ps resolution, as documented in the DS1040 datasheet Figure 2 and AC Electrical Characteristics table.

Is DS1040Z-100 pin-compatible with other DS1040 variants like DS1040Z-200?

No, DS1040Z-100 is not pin-compatible with DS1040Z-200 in terms of functional behavior - though both share identical pinout and package (SOIC-8), their internal width programming is factory-set and non-adjustable. DS1040Z-100 always produces widths from 20 ns to 100 ns; DS1040Z-200 produces 40 ns to 200 ns. Swapping them changes timing behavior without altering connections, so system validation is required for any variant substitution.