Analog Devices Inc./Maxim Integrated DS1040Z-A32+

Overview

DS1040Z-A32+ from Maxim Integrated (formerly Dallas Semiconductor) is a rising-edge-triggered, CMOS programmable one-shot pulse generator with five precise pulse widths selectable via three parallel programming pins (P0–P2). It delivers nominal output pulse widths from 22.5 ns to 32.5 ns (max 32.5 ns), ±5% or ±2 ns tolerance, intrinsic delay ≤10 ns, and drives up to five 74LS loads - used in magneto-optical laser power control timing circuits.

For engineers reviewing the DS1040Z-A32+ datasheet, DS1040Z-A32+ pinout, DS1040Z-A32+ application, or DS1040Z-A32+ equivalent, key selection criteria include programmable width resolution (2.5 ns increments), dual non-inverted/inverted outputs, TTL/CMOS compatibility, 5 V supply operation, and SOIC-8 packaging for space-constrained embedded timing control.

Technical Context

The DS1040Z-A32+ implements a fully silicon-based, non-retriggerable monostable multivibrator architecture with parallel binary programming of pulse width. Its internal timing is derived from precision on-die RC networks calibrated for 5% or 2 ns accuracy across 0°C to 70°C.

It features two complementary CMOS outputs (OUT and OUT), supports rising-edge trigger only, and guarantees intrinsic propagation delay ≤10 ns from IN to either output at VCC = 5.0 V. Power-up stabilization requires ≤100 ms before timing specifications are valid.

Key Specifications

Pinout & Package

DS1040Z-A32+ is housed in an 8-pin SOIC package (150-mil width, JEDEC MS-012), 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-A32+, DS1040Z-A32+ saves board area and supports automated assembly; compared with MAX7375EPA+, it delivers tighter width tolerance (±5% vs ±10%), deterministic programming, and built-in inverted output - critical for timing-critical laser control.

Availability

DS1040Z-A32+ is available at Aetrix Electronics and suitable for magneto-optical storage systems, industrial test equipment, laser driver timing modules, and legacy embedded controller upgrades requiring stable component supply and long-term obsolescence support.

Supply support for DS1040Z-A32+ 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

Maxim Integrated (acquired by Analog Devices in 2021) designs precision analog and mixed-signal ICs for industrial, communications, and computing applications.

The DS1040 series was developed by Dallas Semiconductor specifically for high-accuracy, low-jitter programmable pulse generation in optical storage and instrumentation - replacing less reliable hybrid and discrete monostables.

FAQ

What is the exact pulse width range programmed by DS1040Z-A32+?

The DS1040Z-A32+ is factory-programmed to deliver five discrete pulse widths: 22.5 ns, 25 ns, 27.5 ns, 30 ns, and 32.5 ns (maximum), selected by the logic states of P0–P2. All widths maintain ±5% or ±2 ns accuracy, whichever is greater, across 0°C to 70°C operation. This matches the "A32" designation in the part number.

Does DS1040Z-A32+ support retriggering during an active output pulse?

No, DS1040Z-A32+ is a non-retriggerable one-shot. A new trigger input (IN rising edge) occurring while the output pulse is active is ignored until the current pulse completes. This behavior prevents pulse width distortion in synchronous timing chains and is confirmed in the device's logic diagram and timing specifications.

Can DS1040Z-A32+ operate from a 3.3 V supply?

No, DS1040Z-A32+ is specified only for 4.75 V to 5.25 V operation. Its internal timing network, output drive strength, and input thresholds are calibrated for 5 V CMOS/TTL compatibility. Operation below 4.75 V may cause failure to meet pulse width accuracy, delay, or output drive specifications - per DC Electrical Characteristics table.

What is the meaning of "Z" in DS1040Z-A32+?

The "Z" suffix in DS1040Z-A32+ denotes the 8-pin SOIC (150-mil) package variant. This distinguishes it from the DIP-8 version (DS1040M-A32+) and confirms surface-mount compatibility, lower profile, and suitability for automated PCB assembly - as documented in Dallas Semiconductor mechanical drawings and ordering information.

How does DS1040Z-A32+ handle power-up timing stability?

DS1040Z-A32+ requires ≤100 ms after VCC reaches valid level (≥4.75 V) before output pulse width and delay parameters meet datasheet specifications. During this power-up time (tPU), outputs remain in a high-impedance or indeterminate state. System designs must ensure trigger signals are gated or delayed until after tPU expires to avoid invalid pulses.