Analog Devices Inc./Maxim Integrated MAX4605CPE

Overview

MAX4605CPE from Maxim Integrated is a quad, single-pole single-throw (SPST), normally open (NO) CMOS analog switch with 5Ω maximum on-resistance, 0.5Ω maximum on-resistance match between channels, and rail-to-rail signal handling capability across ±4.5V to ±20V dual supplies or +4.5V to +36V single supply. It delivers low distortion in audio-signal routing and reed-relay replacement applications where precise analog switching and low leakage (<2.5nA at +85°C) are critical.

For engineers reviewing the MAX4605CPE datasheet, MAX4605CPE pinout, MAX4605CPE application, or MAX4605CPE equivalent, key selection criteria include guaranteed R_ON flatness (≤0.5Ω over signal range), TTL/CMOS-compatible logic thresholds (+0.8V / +2.4V), and 16-pin plastic DIP package compatibility with industrial test equipment and avionics signal-path designs.

Technical Context

The MAX4605CPE implements four independent SPST NO switches using high-voltage CMOS process technology, enabling operation over wide analog supply ranges while maintaining tight R_ON matching and flatness. Its control inputs feature fixed TTL/CMOS thresholds independent of supply voltage, supporting interoperability with +12V single-supply or ±15V dual-supply systems without level-shifting.

Each channel supports rail-to-rail analog signals up to ±10V with ≤2.5nA off-leakage at +85°C and ≤100mA continuous current per COM/NO path. Dynamic performance includes 120ns typical turn-on time and −60dB crosstalk at 1MHz, optimized for low-noise signal routing in PBX and communication systems.

Key Specifications

Pinout & Package

MAX4605CPE is housed in a 16-pin plastic DIP (dual in-line package) with 0.3-inch body width and through-hole mounting. Pin 1 is located at the left end of the top row when viewed from the top with notch or dot orientation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4605CPE, MAX4605EPE extends temperature range without altering electrical behavior or layout, whereas ADG1404BRUZ trades supply flexibility for lower R_ON-making MAX4605CPE optimal for cost-sensitive, commercial-temperature ATE and telecom infrastructure where proven reliability and simple integration are prioritized.

Availability

MAX4605CPE is available at Aetrix Electronics and suitable for reed relay replacement, audio-signal routing, and PBX/PABX systems requiring stable component supply, long-term manufacturability, and legacy through-hole compatibility.

Supply support for MAX4605CPE 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 semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing markets.

The MAX4604/MAX4605/MAX4606 family was designed specifically for high-fidelity, low-leakage analog switching in automated test equipment and telecom infrastructure where mechanical relay limitations-such as finite lifetime, contact bounce, and slow switching-must be eliminated.

FAQ

What is the maximum analog signal voltage range supported by the MAX4605CPE?

The MAX4605CPE supports rail-to-rail analog signals from V− to V+, meaning it handles the full range between its negative and positive analog supply rails. With ±15V dual supplies, this equals ±15V; with +12V single supply and V− tied to GND, it supports 0V to +12V. Absolute maximum ratings allow V+ to +44V and V− to −44V, but operational signal range remains constrained by the applied supply voltages.

Does the MAX4605CPE require a separate logic supply voltage (VL), and what happens if it's unconnected?

Yes, the MAX4605CPE requires VL to be connected within 2.7V to 5.5V to establish correct logic input thresholds (+0.8V low / +2.4V high). If VL is left floating or disconnected, input thresholds become undefined and device behavior is not guaranteed. VL may be tied to V+ only if V+ falls within the VL specification range; otherwise, a dedicated 3.3V or 5V logic supply is required.

Can the MAX4605CPE operate from a single +5V supply?

No. The MAX4605CPE minimum single-supply voltage is +4.5V, but operation at exactly +5V is marginal due to internal headroom requirements. At +5V, R_ON increases significantly (up to 8Ω typ), off-leakage rises, and guaranteed performance parameters-including logic thresholds and R_ON flatness-are no longer assured. For reliable +5V-system use, consider the MAX4617 or similar 5V-optimized analog switches.

How does the MAX4605CPE differ from the MAX4604CPE and MAX4606CPE in terms of switch configuration?

The MAX4605CPE contains four normally open (NO) SPST switches: each COM terminal connects to its corresponding NO terminal only when the associated IN pin is high. In contrast, MAX4604CPE has four normally closed (NC) switches (conduct when IN = low), and MAX4606CPE integrates two NC and two NO switches in one package. All three share identical R_ON, leakage, timing, and supply specifications-only logic polarity and default state differ.

Is the MAX4605CPE pin-compatible with surface-mount versions like MAX4605CSE?

Yes, the MAX4605CPE (16-pin plastic DIP) and MAX4605CSE (16-pin narrow SO) share identical pin numbering, pin functions, and electrical specifications. However, PCB layout must account for different package footprints, thermal characteristics, and soldering processes-no adapter or redesign is needed for functional substitution, but mechanical integration requires package-specific land patterns.