Analog Devices Inc./Maxim Integrated MAX336EPI+

Overview

MAX336EPI+ from Maxim Integrated is a 16-channel, single-ended CMOS analog multiplexer designed to route one of 16 bidirectional analog inputs (NO1–NO16) to a common output (COM) under 4-bit binary address control (A0–A3). It features ≤400Ω on-resistance (max), <20pA NO-off leakage at +25°C, and 3.5pC typical charge injection-enabling precision signal routing in data acquisition systems operating from ±4.5V to ±20V dual supplies or +4.5V to +30V single supply.

For engineers reviewing the MAX336EPI+ datasheet, MAX336EPI+ pinout, MAX336EPI+ application, or MAX336EPI+ equivalent, key selection criteria include guaranteed low leakage across -40°C to +85°C, rail-to-rail bidirectional signal handling, TTL/CMOS-compatible enable and address inputs, and ESD protection >2000V per Method 3015.7-critical for test equipment and high-accuracy sensor interfaces.

Technical Context

The MAX336EPI+ implements a monolithic BiCMOS decoder-driven analog switch matrix with break-before-make switching and guaranteed low charge injection (3.5pC typ) to minimize transient errors during channel transitions. Its control logic accepts TTL/CMOS-level signals (0.8V to 2.4V) across full temperature range and supply voltages, enabling direct interfacing with microcontrollers without level-shifting.

It supports both single-supply (+4.5V to +30V, V− tied to GND) and dual-supply (±4.5V to ±20V) operation, with analog signal range extending from V− to V+-ensuring rail-to-rail input/output capability. The device's low on-resistance matching (≤10Ω max at +25°C) and sub-500ns transition time support high-fidelity multiplexing in multi-channel instrumentation.

Key Specifications

Pinout & Package

MAX336EPI+ is housed in a 28-pin plastic DIP package (0.600" wide), rated for -40°C to +85°C operation. Pin 1 is V+, pins 2–3 and 13 are no-connect, pin 12 is GND, pins 14–17 are address inputs A3–A0, pin 18 is EN, pins 19–26 are NO1–NO8, pins 27 and 28 are V− and COM respectively, and pins 4–11 are NO9–NO16.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX336CPI+, the MAX336EPI+ delivers guaranteed -40°C to +85°C operation and superior ESD robustness; compared with DG506ACJ, it offers significantly lower on-resistance, 5.7× lower charge injection, and documented >2000V ESD protection-making it the preferred choice for new precision designs requiring long-term reliability.

Availability

MAX336EPI+ is available at Aetrix Electronics and suitable for automated test equipment, precision data acquisition systems, and industrial process control applications requiring stable component supply across extended temperature ranges and high-reliability signal routing.

Supply support for MAX336EPI+ 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, medical, and communications applications.

The MAX336 product line was engineered specifically for low-leakage, low-charge-injection analog multiplexing in precision measurement systems-targeting applications where signal integrity, temperature stability, and long-term reliability are non-negotiable.

FAQ

What is the maximum operating temperature range for the MAX336EPI+?

The MAX336EPI+ is rated for continuous operation from -40°C to +85°C. This extended temperature range is confirmed in the Ordering Information table and Absolute Maximum Ratings section of the official datasheet. Unlike the C-grade variant (MAX336CPI+), the MAX336EPI+ maintains full electrical specifications-including on-resistance, leakage current, and switching timing-across this entire range, making it suitable for industrial and automotive under-hood applications.

Does the MAX336EPI+ support single-supply operation?

Yes, the MAX336EPI+ supports single-supply operation from +4.5V to +30V. In this configuration, the V− pin must be connected to GND. The analog signal range then extends from 0V to V+, enabling rail-to-rail operation in +12V or +24V systems. The device's TTL/CMOS-compatible control inputs remain fully functional without level-shifting, simplifying interface with microcontrollers and FPGAs in single-rail designs.

Is the MAX336EPI+ pin-compatible with the DG506?

Yes, the MAX336EPI+ is explicitly described in the datasheet as a "pin-compatible upgrade for the industry-standard DG506 and DG507." Pin assignments-including V+, V−, GND, COM, NO1–NO16, A0–A3, and EN-are identical between MAX336EPI+ and DG506ACJ in the 28-pin DIP package. No PCB layout changes are required when upgrading, though design verification should confirm compatibility with existing timing and leakage requirements.

What is the typical charge injection value for the MAX336EPI+ and why does it matter?

The MAX336EPI+ has a typical charge injection value of 3.5pC, as measured under standard test conditions (CL = 100pF, RS = 0Ω, TA = +25°C). This low value minimizes voltage glitches on high-impedance nodes-such as those found in sample-and-hold circuits or integrators-reducing settling time and eliminating the need for extended blanking periods. In precision data acquisition, this directly improves effective resolution and measurement repeatability.

How does the MAX336EPI+ handle bidirectional analog signals?

The MAX336EPI+ supports fully bidirectional analog signal flow between any NOx pin and the COM pin. There is no designated "input" or "output"-all 16 NO terminals and COM are electrically symmetric, with identical on-resistance, leakage, and capacitance characteristics in either direction. This symmetry allows flexible routing in both signal acquisition (sensor → ADC) and stimulus generation (DAC → actuator) paths without performance degradation.