Analog Devices Inc./Maxim Integrated DG528CWN+

Overview

DG528CWN+ from Maxim Integrated is a monolithic, single-ended 1-of-8 CMOS analog multiplexer with on-board address latches, break-before-make switching, ±4.5V to ±20V dual-supply or +5V to +30V single-supply operation, and TTL/CMOS-compatible logic inputs-designed for microprocessor-controlled data-acquisition systems requiring channel selection stability and low on-resistance (rDS(ON) < 400Ω).

For engineers reviewing the DG528CWN+ datasheet, DG528CWN+ pinout, DG528CWN+ application, or DG528CWN+ equivalent, key selection criteria include latchable address control, analog signal range (±15V), leakage performance (ID(OFF) < 10nA), timing parameters (tON(EN) = 1.0–1.5µs), and wide-temperature SOIC-18 packaging suitable for industrial ATE and avionics interfaces.

Technical Context

The DG528CWN+ implements an 8-channel analog switch matrix controlled by a 3-bit binary address (A2/A1/A0), with separate EN (enable), WR (write latch), and RS (reset) digital inputs. Its internal structure uses parallel N- and P-MOSFET gate stacks per channel to achieve rail-to-rail analog conduction and low charge injection (Q = 4pC).

It operates in three distinct modes: transparent (WR low, RS high), latched (WR high), and reset (RS low). The on-board address latches eliminate need for continuous µP bus drive, while break-before-make timing (tOPEN = 0.2µs) prevents input shorting during channel transitions.

Key Specifications

Pinout & Package

DG528CWN+ is housed in an 18-pin Wide SO (Small Outline) package, 0.300-inch body width, with gull-wing leads and JEDEC MS-013AC compliant footprint (7.62mm × 10.16mm). Pin pitch is 1.27mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog multiplexer applications.

Compared with DG528CWN+, ADG528AKRZ offers extended temperature and screening at the cost of higher on-resistance and charge injection, while DG528DJ+ delivers identical analog performance in a through-hole package with greater power handling-neither is pin-and-function identical to DG528CWN+ in thermal or package mechanical behavior.

Availability

DG528CWN+ is available at Aetrix Electronics and suitable for automated test equipment, data-acquisition systems, and avionics signal conditioning requiring stable component supply, long-term manufacturability, and consistent SOIC-18 sourcing.

Supply support for DG528CWN+ 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 (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing markets.

The DG528CWN+ belongs to Maxim's legacy precision analog switch product line, engineered specifically for microprocessor-controlled multiplexing in environments demanding latch stability, rail-to-rail analog conduction, and robust ESD protection.

FAQ

What is the maximum analog signal voltage range supported by the DG528CWN+?

The DG528CWN+ supports an analog signal range of ±15V when operated with ±15V dual supplies. With asymmetrical supplies such as +15V and -5V, it handles signals from -5V to +15V. In single-supply mode (+5V to +30V), the analog range extends from 0V to V+, provided V- is tied to GND. This flexibility makes DG528CWN+ suitable for both unipolar and bipolar signal routing in industrial DAQ systems.

Does the DG528CWN+ require external pull-up resistors on its address or control lines?

No, the DG528CWN+ does not require external pull-up resistors on A0, A1, A2, EN, WR, or RS inputs. Its TTL/CMOS-compatible inputs have guaranteed logic thresholds (VAL ≤ 0.8V, VAH ≥ 2.4V) and draw less than 1µA input current across temperature. Internal design ensures reliable switching without external biasing-direct connection to microcontroller GPIOs or bus drivers is fully supported for DG528CWN+.

How does the break-before-make timing of the DG528CWN+ prevent signal corruption?

The DG528CWN+ guarantees a minimum 0.2µs break interval (tOPEN) between channel disconnect and reconnect during address changes. This prevents momentary shorting of input sources-critical when multiplexing sensors with different output impedances or voltage levels. In DG528CWN+, this timing is inherent to the MOSFET gate drive sequence and requires no external timing circuitry, ensuring robust operation in high-precision measurement paths.

Can the DG528CWN+ operate with a single +5V supply, and what are the implications?

Yes, the DG528CWN+ operates with a single +5V supply (V+ = +5V, V- = GND). In this configuration, the analog signal range is 0V to +5V, and switching delays approximately double versus ±15V operation. However, break-before-make action remains functional, and logic thresholds stay compatible with TTL. DG528CWN+ maintains full specification compliance-including rDS(ON) < 400Ω and ID(OFF) < 10nA-making it viable for low-voltage portable DAQ designs.

Is the DG528CWN+ pin-compatible with the DG528CJ or DG528CK variants?

Yes, the DG528CWN+ is pin-compatible with DG528CJ (18-pin DIP) and DG528CK (18-pin CERDIP) because all share identical 18-pin pinouts and functionally equivalent logic and analog behavior. Differences lie only in package type (SOIC vs. DIP vs. CERDIP), thermal characteristics, and temperature grading (all rated 0°C to +70°C). Layout adaptation is required only for footprint; no schematic or firmware changes are needed when substituting DG528CWN+ for DG528CJ or DG528CK.