Analog Devices Inc./Maxim Integrated DG412CY+T

Overview

DG412CY+T from Maxim Integrated is a quad, normally open (NO), single-pole/single-throw (SPST) analog switch IC designed for precision signal routing in bipolar or single-supply systems. It features 35Ω max on-resistance, <5nA off-leakage at +85°C, 10pC max charge injection, rail-to-rail analog signal handling (±15V), and TTL/CMOS logic compatibility - enabling use in battery-operated test equipment and audio routing where low distortion and minimal signal corruption are critical.

For engineers reviewing the DG412CY+T datasheet, DG412CY+T pinout, DG412CY+T application, or DG412CY+T equivalent, key selection criteria include guaranteed on-resistance matching (≤3Ω), flatness over signal range (Δ4Ω), ESD tolerance (2000V min), dual-supply operation (±4.5V to ±20V), and SO-16 narrow package compatibility with legacy DG412 footprints.

Technical Context

The DG412CY+T implements four independent SPST switches with NO configuration, controlled by active-high digital inputs referenced to VL (typically +5V). Its silicon-gate 44V process enables robust rail-to-rail analog conduction and low leakage across temperature.

Switching is bidirectional with symmetric on-resistance behavior; timing parameters (tON < 150ns, tOFF < 100ns) are specified under ±15V supplies and load conditions of RL = 300Ω, CL = 35pF. Off-isolation exceeds 68dB and crosstalk remains below –85dB at 1MHz.

Key Specifications

Pinout & Package

Package: 16-pin narrow SO (SOIC-16, package code S16-1), 7.5mm × 10.3mm body, 1.27mm pitch, RoHS-compliant, tape-and-reel (DG412CY+T).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG412BRZ and TS5A3157DCKR, DG412CY+T uniquely delivers guaranteed on-resistance flatness, bipolar supply flexibility, and MIL-qualified thermal performance - making it the only option for upgrading existing DG412-based test and defense systems without redesign.

Availability

DG412CY+T is available at Aetrix Electronics and suitable for test equipment, battery-operated data loggers, and military radio systems requiring stable component supply, long-term obsolescence management, and traceable sourcing.

Supply support for DG412CY+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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and automotive markets.

The DG412CY+T belongs to Maxim's precision analog switch family, engineered for signal integrity-critical applications including automated test equipment, avionics, and secure communications where low leakage, flat on-resistance, and ESD robustness are mandatory.

FAQ

What is the operating temperature range for DG412CY+T?

The DG412CY+T is rated for 0°C to +70°C operation, as indicated by the "C" grade suffix in its ordering code. This commercial-grade temperature range suits laboratory instruments, consumer audio gear, and non-mission-critical industrial controls. For extended temperature operation, consider the DG412EY variant (–40°C to +85°C) or DG412AK (–55°C to +125°C), both sharing identical electrical specifications and pinout with DG412CY+T.

Does DG412CY+T support single-supply operation?

Yes, DG412CY+T supports single-supply operation from +10V to +30V, with V− tied to ground. In this configuration, the analog signal range extends from 0V to V+, enabling compatibility with microcontroller-based systems powered from 12V or 24V rails. However, on-resistance flatness (Δ4Ω) and match (≤3Ω) are guaranteed only under bipolar supply conditions per the datasheet.

What is the maximum analog signal voltage DG412CY+T can handle?

DG412CY+T supports analog signals from V− to V+, with absolute maximum ratings of V+ ≤ 44V and V− ≥ –44V relative to ground. Under standard ±15V operation, the usable analog range is ±15.5V (clamped by internal diodes). For reliable operation, keep signals within the specified range: ±15V for optimal R_DS(ON) flatness and leakage performance, as confirmed in the Electrical Characteristics tables.

Is DG412CY+T pin-compatible with older DG412 variants?

Yes, DG412CY+T is a plug-in upgrade for industry-standard DG412 devices in the same narrow SO-16 package. Pin assignments, logic polarity, and electrical interface are identical to legacy DG412CJ, DG412CUE, and DG412CY parts. No PCB layout changes or firmware modifications are required - only verification that system-level supply voltages and signal ranges align with the improved specs (e.g., lower leakage, tighter R_DS(ON) match).

How does DG412CY+T achieve low charge injection?

DG412CY+T achieves ≤10pC charge injection through matched transistor geometry and optimized gate drive timing in its 44V silicon-gate process. This minimizes transient voltage spikes at the output during switching - critical in sample-and-hold circuits and multiplexed ADC front-ends. Measured with CL = 1.0nF and zero-source impedance, the value is guaranteed across temperature and supply conditions, directly improving acquisition accuracy in precision measurement systems using DG412CY+T.