Analog Devices Inc./Maxim Integrated DG412CY+

Overview

DG412CY+ 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 delivers 35Ω max on-resistance, <5nA off-leakage at +85°C, 10pC max charge injection, and operates from ±4.5V to ±20V or +10V to +30V supplies - enabling use in battery-operated test equipment and military radio front-ends.

For engineers reviewing the DG412CY+ datasheet, DG412CY+ pinout, DG412CY+ application, or DG412CY+ equivalent, key selection criteria include guaranteed on-resistance matching (≤3Ω), rail-to-rail analog signal handling (±15.5V), TTL/CMOS logic compatibility, and ESD tolerance ≥2000V per Method 3015.7.

Technical Context

The DG412CY+ implements four independent NO SPST switches fabricated in a 44V silicon-gate process, supporting bidirectional conduction with symmetrical on-resistance behavior across the full analog signal range. Its control architecture accepts standard TTL/CMOS logic levels at VL = 5V while maintaining rail-to-rail analog switching capability.

Switching performance is characterized by tON ≤ 150ns and tOFF ≤ 100ns under ±15V supplies, with break-before-make timing validated only for DG413 - not applicable to DG412CY+. On-resistance flatness (ΔRDS(ON) ≤ 4Ω) and channel-to-channel RDS(ON) match (≤3Ω) are guaranteed exclusively under bipolar supply operation.

Key Specifications

Pinout & Package

DG412CY+ is housed in a 16-pin narrow SOIC (Small Outline Integrated Circuit) package with 1.27mm pitch, JEDEC MS-012 compliant, and rated for 0°C to +70°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG412BRZ and TS5A3157DCKR, DG412CY+ uniquely supports dual-supply operation up to ±20V with guaranteed on-resistance matching and flatness - making it irreplaceable in high-fidelity test and military comms where signal fidelity across wide voltage rails is non-negotiable.

Availability

DG412CY+ is available at Aetrix Electronics and suitable for test equipment, communication systems, and battery-operated systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing from authorized channels.

Supply support for DG412CY+ 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 aerospace markets.

DG412CY+ belongs to Maxim's legacy precision analog switch product line, engineered specifically for demanding signal routing applications where low leakage, matched on-resistance, and high-voltage rail-to-rail operation are critical.

FAQ

What is the maximum analog signal voltage range supported by DG412CY+?

DG412CY+ supports an analog signal range of ±15.5V when operated with ±16.5V supplies, and up to +12V with a +12V single supply (V− = 0V). The absolute maximum ratings allow V+ up to +44V and V− down to −44V, but functional analog range is constrained by supply voltage headroom and internal clamp diodes. Signals exceeding V+ or V− are clamped, limiting usable swing to within the supply rails.

Does DG412CY+ require a separate logic supply (VL), and what happens if VL is unconnected?

Yes, DG412CY+ requires VL to be actively driven - typically to +5V for TTL compatibility or to V+ for CMOS-level inputs. If VL is left floating or unconnected, logic inputs become undefined, causing unpredictable switch states and potential shoot-through current. The device will not function reliably without a valid VL connection, as it powers the input buffer stage and defines logic threshold voltages.

Can DG412CY+ be used in single-supply configurations, and how should V− be connected?

Yes, DG412CY+ supports single-supply operation from +10V to +30V. In this mode, V− must be connected directly to circuit ground (0V), and VL should be set to +5V for TTL compatibility. The analog signal range becomes 0V to V+, and all specifications - including RDS(ON), leakage, and switching times - are validated under these conditions per the single-supply electrical characteristics table.

Is DG412CY+ pin-compatible with older DG412 variants like DG412CJ or DG412CUE?

Yes, DG412CY+ shares identical pinout and footprint with all industry-standard DG412 variants including DG412CJ (16-pin DIP), DG412CUE (16-pin TSSOP), and DG412EUE. All share the same 16-pin SOIC-compatible layout, signal assignments, and thermal pad absence - enabling direct replacement in existing narrow SO designs without PCB modification.

What is the significance of "DG412" being normally open (NO), and how does it differ from DG411/DG413?

DG412 is configured as four independent normally open (NO) SPST switches: each channel conducts only when its INx input is logic high. This contrasts with DG411 (normally closed, NC) and DG413 (dual NC + dual NO). The NO behavior ensures signal isolation by default - critical for safety-critical routing, power sequencing, and fail-safe signal gating where unintended conduction must be avoided during power-up or logic reset.