Analog Devices Inc./Maxim Integrated MAX4605CSE+T

Overview

MAX4605CSE+T 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 2.5nA max off-leakage at +85°C and supports TTL/CMOS-compatible logic inputs - ideal for precision audio-signal routing and automated test equipment.

For engineers reviewing the MAX4605CSE+T datasheet, MAX4605CSE+T pinout, MAX4605CSE+T application, or MAX4605CSE+T equivalent, key selection criteria include guaranteed R_ON flatness (0.5Ω max over signal range), charge injection (10pC typ), off-isolation (–62dB), and SOIC-16 package compatibility with industrial temperature range requirements.

Technical Context

The MAX4605CSE+T implements a fully complementary CMOS transmission-gate architecture optimized for low distortion and minimal signal-dependent resistance variation. Its four independent NO switches operate with matched channel characteristics and are controlled by logic-level inputs referenced to VL (logic supply), enabling robust interfacing with microcontrollers or FPGAs across wide supply ranges.

Each switch features internal ESD protection (>2000V per Method 3015.7), symmetric analog signal paths, and guaranteed performance over –40°C to +85°C (E-grade). The device maintains stable R_ON flatness and low crosstalk (–60dB) without requiring external biasing or level-shifting circuitry.

Key Specifications

Pinout & Package

MAX4605CSE+T is housed in a 16-pin narrow SOIC (SO/DIP) package with standard 1.27mm pitch, RoHS-compliant lead finish, and JEDEC MS-012AC footprint. Thermal resistance θ_JA = 115°C/W (SOIC).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1404BRUZ and TS5A3157DCKR, the MAX4605CSE+T uniquely balances wide supply flexibility (+4.5V to +36V or ±4.5V to ±20V), guaranteed R_ON flatness, and industrial temperature support - making it optimal for reed-relay replacement and test-equipment designs requiring proven reliability across mixed-rail environments.

Availability

MAX4605CSE+T is available at Aetrix Electronics and suitable for automatic test equipment, avionics signal conditioning, and reed relay replacement requiring stable component supply and long-term industrial lifecycle support.

Supply support for MAX4605CSE+T 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, communications, and computing applications.

The MAX4604/MAX4605/MAX4606 family was engineered specifically for high-fidelity analog signal routing where mechanical relay limitations - bounce, wear, size, and power - must be eliminated without sacrificing linearity or voltage range.

FAQ

What is the operating temperature range for MAX4605CSE+T?

The MAX4605CSE+T is rated for operation from –40°C to +85°C (E-grade), verified per the manufacturer's datasheet electrical characteristics tables and absolute maximum ratings. This range applies to all specified parameters including R_ON, leakage, and switching times. The 'C' suffix in MAX4605CSE+T denotes commercial-grade packaging, but the 'E' in the full ordering code confirms extended temperature qualification - consistent with Maxim's published ordering information for MAX4605ESE variants.

Can MAX4605CSE+T operate from a single 5V supply?

Yes, MAX4605CSE+T supports single-supply operation down to +4.5V, so +5V is fully compliant. When using +5V, V− must be connected to GND, VL should be supplied with 5V (or 3.3V if logic levels permit), and analog signals must remain within 0V to +5V. R_ON increases slightly versus ±15V operation (8Ω max at +5V per datasheet Table "Single Supply"), but remains monotonic and flat across the signal range.

Does MAX4605CSE+T require external pull-up resistors on its logic inputs?

No, MAX4605CSE+T does not require external pull-ups. Its digital inputs have TTL/CMOS-compatible thresholds (0.8V low, 2.4V high) and exhibit low input current (±0.5µA max), allowing direct connection to microcontroller GPIOs or FPGA outputs. Internal input structure provides adequate noise immunity without external biasing - confirmed by the "Input Current" specifications in both dual- and single-supply electrical characteristic tables.

How is the VL pin used in MAX4605CSE+T?

The VL pin on MAX4605CSE+T supplies the internal logic-level translator and input buffer circuitry. It must be connected to a stable 2.7V to 5.5V supply - typically 5V when using ±15V analog rails or +12V single supply. VL is independent of V+ and V−, enabling clean logic interfacing even when analog supplies are asymmetric or noisy. Decoupling with a 0.1µF capacitor to GND is recommended per the manufacturer's layout guidelines.

Is MAX4605CSE+T pin-compatible with MAX4604CSE+T or MAX4606CSE+T?

Yes, MAX4605CSE+T shares identical pinout and package (16-pin narrow SOIC) with MAX4604CSE+T and MAX4606CSE+T. All three devices use the same physical layout and terminal functions - only the internal switch configuration differs (NO-only for MAX4605, NC-only for MAX4604, mixed for MAX4606). This allows direct substitution in PCB designs where logic polarity and switch state behavior are accounted for in firmware or external logic.