Analog Devices Inc./Maxim Integrated MAX333ACPP+

Overview

MAX333ACPP+ from Maxim Integrated is a precision quad SPDT CMOS analog switch in 20-pin plastic DIP package, operating from ±4.5V to ±20V or +10V to +30V single supply, with on-resistance <35Ω, matched within 2Ω between channels, and break-before-make time of 10ns typical. It enables rail-to-rail signal switching in portable test equipment and communications interfaces.

For engineers reviewing the MAX333ACPP+ datasheet, MAX333ACPP+ pinout, MAX333ACPP+ application, or MAX333ACPP+ equivalent, key selection criteria include guaranteed on-resistance flatness (∆3Ω max), <10pC charge injection, <6nA off-channel leakage at +85°C, TTL/CMOS logic compatibility, and dual- or single-supply flexibility without level-shifting circuitry.

Technical Context

The MAX333ACPP+ integrates four independent SPDT switches using Maxim's silicon-gate CMOS process, supporting both bipolar (±4.5V to ±20V) and single-ended (+10V to +30V) operation with rail-to-rail analog signal handling. Its logic inputs are guaranteed compatible across +0.8V to +2.4V regardless of supply voltage.

Break-before-make switching prevents signal shorting during transition, with t_OPEN = 10ns typical, t_ON < 175ns, and t_OFF < 145ns under ±15V conditions. Charge injection is tightly controlled at ≤10pC, critical for sample-and-hold and multiplexer accuracy.

Key Specifications

Pinout & Package

MAX333ACPP+ uses a 20-pin plastic DIP (dual in-line package) with 0.300" wide body, lead pitch of 0.100", and through-hole mounting. Pin 15 is not internally connected; Pin 6 is GND; Pins 5 and 16 are V− and V+, respectively.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad SPDT analog switch applications.

Compared with ADG403BRZ and TMUX6219RTER, the MAX333ACPP+ uniquely combines ±20V bipolar operation, guaranteed 2Ω channel matching, and >2000V ESD in a through-hole DIP package-making it the only option for ruggedized, wide-supply test and telecom hardware requiring traceable legacy compatibility.

Availability

MAX333ACPP+ is available at Aetrix Electronics and suitable for test equipment, communications systems, heads-up displays, and portable instruments requiring stable component supply across extended temperature and voltage ranges.

Supply support for MAX333ACPP+ 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) designs high-performance analog and mixed-signal ICs for precision, power, and interface applications in industrial, automotive, and communications markets.

The MAX333A product line delivers precision analog switching with guaranteed matching, low charge injection, and wide supply flexibility-targeting automated test, telecom infrastructure, and portable instrumentation where signal integrity and reliability are non-negotiable.

FAQ

What supply voltages does the MAX333ACPP+ support?

The MAX333ACPP+ operates from bipolar supplies of ±4.5V to ±20V or single-ended supplies from +10V to +30V. When used with a single supply, V− must be connected to GND. The device maintains rail-to-rail analog signal handling across this full range, and logic inputs remain TTL/CMOS-compatible regardless of supply configuration. Absolute maximum ratings limit V+ to +30V and V− to −30V relative to GND.

Does the MAX333ACPP+ require external level-shifting for logic control?

No, the MAX333ACPP+ does not require external level-shifting. Its logic inputs are guaranteed compatible with TTL and CMOS levels (+0.8V to +2.4V) across the entire specified supply range. This means microcontrollers, FPGAs, or logic gates operating at 3.3V or 5V can directly drive IN1–IN4 without additional circuitry-even when the analog supply rails are ±15V or +24V.

What is the significance of the "C" grade in MAX333ACPP+?

The "C" in MAX333ACPP+ denotes the commercial temperature grade: 0°C to +70°C operating range. This distinguishes it from the "E" grade (−40°C to +85°C) and "M" grade (−55°C to +125°C). The C-grade version is optimized for cost-sensitive applications in controlled environments such as benchtop test equipment, office-based communications systems, and portable instruments not exposed to extreme ambient conditions.

How does the MAX333ACPP+ handle overvoltage conditions on analog pins?

The MAX333ACPP+ allows analog signals (V_COM, V_NO, V_NC) to swing from V− to V+ without damage, provided absolute maximum ratings are observed: (V_NO − V_NC) ≤ 32V and V_COM remains within V− to V+. For operation beyond ±15V, switching times increase and on-resistance rises slightly-but functionality remains intact. External blocking diodes may be added for overvoltage protection, though they reduce usable analog range by ~1V.

Can the MAX333ACPP+ replace two DG403 devices?

Yes-the MAX333ACPP+ is explicitly positioned as an upgraded replacement for two DG403 dual SPDT switches or a DG211/DG212 pair. It integrates four independent SPDT switches into one 20-pin DIP, reducing board space, solder joints, and interconnect complexity. Unlike the DG403, the MAX333ACPP+ guarantees on-resistance matching (<2Ω), flatness (∆3Ω max), and lower charge injection (<10pC), making it suitable for higher-precision applications without redesigning signal paths.