Analog Devices Inc./Maxim Integrated MAX333ACPP

Overview

The MAX333ACPP from Maxim Integrated is a precision quad SPDT CMOS analog switch in 20-pin plastic DIP package, operating with bipolar supplies (±4.5V to ±20V) or single-ended supply (+10V to +30V), featuring <35Ω on-resistance, <2Ω channel-to-channel matching, <10pC charge injection, rail-to-rail analog signal handling, and break-before-make switching (10ns typical). It is used in portable instruments and heads-up displays where low leakage and stable on-resistance over temperature and signal range are critical.

For engineers reviewing the MAX333ACPP datasheet, MAX333ACPP pinout, MAX333ACPP application, or MAX333ACPP equivalent, this page delivers verified electrical specifications, real-world timing behavior, thermal performance limits, supply sequencing guidance, and validated alternative options for test equipment and communications systems requiring high-precision analog switching.

Technical Context

The MAX333ACPP implements four independent SPDT switches using Maxim's silicon-gate CMOS process, enabling rail-to-rail analog signal routing between COM, NO, and NC terminals without damage across full supply rails. Its logic inputs are TTL/CMOS-compatible (0.8V–2.4V thresholds) regardless of supply voltage, and internal level translation ensures reliable control under both bipolar and single-supply operation.

Break-before-make architecture prevents momentary shorting during state transitions, with guaranteed t_OPEN ≤10ns (typ), t_ON <175ns, and t_OFF <145ns under ±15V. On-resistance flatness (∆3Ω max) and matching (<2Ω) are specified only for bipolar-supply operation, and charge injection is guaranteed ≤10pC-critical for sample-and-hold and multiplexer accuracy.

Key Specifications

Pinout & Package

MAX333ACPP is housed in a 20-pin plastic DIP (dual in-line package) with 0.300" wide body and 0.100" lead pitch, rated for 0°C to +70°C operation. 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 analog switching applications.

Compared with MAX333AEPP, the MAX333ACPP offers lower quiescent current and cost for commercial-temperature applications; compared with ADG408BRZ, it provides true SPDT topology, guaranteed break-before-make, and superior charge injection performance-making it preferred for precision dual-path selection in test and portable gear.

Availability

MAX333ACPP is available at Aetrix Electronics and suitable for test equipment, communications systems, heads-up displays, and portable instruments requiring stable component supply and long-term obsolescence management.

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 precision analog, mixed-signal, and power management ICs for industrial, medical, communications, and consumer applications.

The MAX333A product line delivers high-accuracy, low-leakage analog switching solutions optimized for automated test equipment, telecom infrastructure, and portable instrumentation where signal integrity and supply flexibility are critical.

FAQ

What is the maximum analog signal voltage range supported by the MAX333ACPP?

The MAX333ACPP supports analog signal voltages from V− to V+, meaning it handles rail-to-rail signals across its full supply range: ±4.5V to ±20V (bipolar) or +10V to +30V (single-ended). For example, with V+ = +15V and V− = −15V, VCOM, VNO, and VNC may swing from −15V to +15V without damage or performance degradation. This capability eliminates external clamping components in wide-dynamic-range applications like audio routing or sensor multiplexing.

Does the MAX333ACPP require power-supply sequencing, and what happens if it's not followed?

Yes, the MAX333ACPP requires proper power-supply sequencing: V+ must be applied first, followed by V−, then logic inputs. Failure to sequence risks exceeding absolute maximum ratings-specifically, applying logic signals before V+ or V− may cause latch-up or permanent damage. If sequencing cannot be guaranteed, two small-signal diodes should be placed in series with V+ and V− pins (per Figure 1 in the datasheet), reducing analog signal range by 1V but preserving RON and leakage specs. The MAX333ACPP itself does not include internal sequencing protection.

Can the MAX333ACPP operate from a single +12V supply, and how does performance differ from ±15V operation?

Yes, the MAX333ACPP operates from a single +12V supply (with V− tied to GND). In this configuration, RON increases to 75Ω max (vs. 35Ω max at ±15V), turn-on/off times improve slightly (t_ON <35ns, t_OFF <45ns), and analog range becomes 0V to +12V. However, on-resistance matching (<2Ω) and flatness (∆3Ω) are guaranteed only under bipolar supply conditions per datasheet Note 4. So while functional, precision-critical applications should use ±15V for spec-compliant matching and flatness.

Is the MAX333ACPP pin-compatible with the DG211 or DG212, and what design benefits does it offer over them?

Yes, the MAX333ACPP is a direct pin- and function-compatible upgrade for a DG211/DG212 pair or two DG403s, as explicitly stated in its Features section. It improves upon those legacy parts with lower on-resistance (35Ω vs. ~60Ω), tighter channel matching (<2Ω vs. unspecified), guaranteed break-before-make (10ns), lower charge injection (10pC vs. ~25pC), and enhanced ESD tolerance (>2000V vs. ~1000V). These improvements reduce signal distortion, simplify layout, and increase system reliability-especially in portable and automated test equipment where the MAX333ACPP is commonly deployed.

What is the thermal derating behavior of the MAX333ACPP in its plastic DIP package?

The MAX333ACPP in 20-pin plastic DIP has a continuous power dissipation limit of 889mW at TA = +70°C, with derating at 11.11mW/°C above that temperature. At +85°C ambient, maximum allowable power drops to 889mW − (15°C × 11.11mW/°C) = 722mW. This derating applies to total device power (I+ × V+ + |I−| × |V−|), not per-switch. Since quiescent current is <50µA, self-heating is negligible in most applications-but users must account for load current through COM/NO/NC paths when calculating worst-case junction temperature.