Analog Devices Inc./Maxim Integrated MAX336EAI+

Overview

MAX336EAI+ from Maxim Integrated is a 16-channel, single-ended CMOS analog multiplexer designed to route one of 16 bidirectional analog inputs to a common COM output under 4-bit binary address control. It features 400Ω max on-resistance, <20pA NO-off leakage at +25°C, and rail-to-rail signal handling across ±4.5V to ±20V dual supplies or +4.5V to +30V single supply. It serves precision data acquisition systems requiring low charge injection (3.5pC typ) and high off-isolation (–82dB).

For engineers reviewing the MAX336EAI+ datasheet, MAX336EAI+ pinout, MAX336EAI+ application, or MAX336EAI+ equivalent, key selection criteria include guaranteed on-resistance matching (<10Ω), TTL/CMOS-compatible enable/address inputs, ESD protection >2000V (Method 3015.7), and compatibility with legacy DG506/DG507 layouts in industrial test equipment and sensor signal conditioning.

Technical Context

The MAX336EAI+ implements a monolithic BiCMOS decoder-driver architecture that enables break-before-make switching with 10ns–50ns t_OPEN, supporting bidirectional signal flow without polarity constraints. Its switch cells are optimized for low-leakage operation across –40°C to +85°C, with leakage parameters 100% tested at maximum rated hot temperature and correlated to +25°C values.

Control logic accepts TTL/CMOS-level inputs (0.8V to 2.4V) over full supply range (±4.5V to ±18V), enabling direct interfacing with microcontrollers and FPGAs. The device supports both single-supply (V− tied to GND) and unbalanced dual-supply configurations (e.g., +24V/–5V), maintaining specified R_ON and leakage performance within absolute voltage limits (V+ ≤ V− + 44V).

Key Specifications

Pinout & Package

MAX336EAI+ is housed in a 28-pin SSOP (Shrink Small Outline Package) with 0.65mm lead pitch, RoHS-compliant and lead-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX336CAI+, the MAX336EAI+ provides extended temperature operation and enhanced reliability for harsh environments; compared with ADG1208BRUZ, it offers native 16-channel parallel addressing, lower charge injection, and direct DG506/DG507 compatibility-making it optimal for high-channel-count, low-glitch, drop-in industrial DAQ upgrades.

Availability

MAX336EAI+ is available at Aetrix Electronics and suitable for precision data acquisition, automated test equipment, and industrial process control systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX336EAI+ 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, mixed-signal, and power-management ICs for industrial, medical, communications, and consumer applications.

The MAX336 series targets precision analog signal routing in data acquisition and test instrumentation, emphasizing ultra-low leakage, rail-to-rail operation, and plug-in compatibility with legacy industry-standard multiplexers.

FAQ

What is the maximum allowable voltage difference between V+ and V− for the MAX336EAI+?

The MAX336EAI+ specifies an absolute maximum voltage difference of 44V between V+ and V−. This allows flexible configurations such as ±15V (30V total), +24V/–5V (29V total), or +30V/GND (30V), provided neither supply exceeds its individual rating (V+ ≤ 44V above V−, V− ≥ –0.3V). Exceeding 44V risks permanent damage per Absolute Maximum Ratings.

Does the MAX336EAI+ support single-supply operation, and how is it configured?

Yes, the MAX336EAI+ supports single-supply operation from +4.5V to +30V. To configure, connect V− to GND, apply the positive supply to V+, and ensure all analog signals remain within 0V to V+ (e.g., 0V to +15V for a +15V supply). Control inputs (A0–A3, EN) remain TTL/CMOS-compatible, and rail-to-rail operation is preserved from GND to V+.

How does the MAX336EAI+ achieve compatibility with the DG506 while improving performance?

The MAX336EAI+ maintains identical pinout, package footprint, and functional truth table as the DG506, enabling direct PCB replacement. It improves upon the DG506 with guaranteed <400Ω on-resistance (vs. unspecified max), <20pA NO-off leakage (vs. ~100pA), 3.5pC charge injection (vs. ~15pC), and >2000V ESD protection-delivering measurable gains in precision, noise immunity, and manufacturing robustness without layout changes.

What is the significance of the "E" in MAX336EAI+ regarding temperature range and reliability?

"E" denotes the industrial temperature grade: –40°C to +85°C. This extends beyond the commercial "C" grade (0°C to +70°C) and ensures guaranteed parametric performance-including leakage, R_ON, and switching times-across the full industrial range. The MAX336EAI+ undergoes 100% testing at max temperature, making it suitable for outdoor, factory-floor, and automotive-adjacent applications where thermal stability is critical.

Can the MAX336EAI+ be used in demultiplexer (demux) mode, and what design considerations apply?

Yes, the MAX336EAI+ operates bidirectionally and functions equally well as a demux: drive a signal into COM and route it to one of NO1–NO16 based on address inputs. Key considerations include ensuring all unused NOx pins are terminated (e.g., to GND or V− via high-value resistors) to prevent floating nodes that increase leakage or EMI susceptibility, and verifying that source drive strength meets the 30mA continuous current limit per terminal.