Analog Devices Inc./Maxim Integrated DG419DY

Overview

DG419DY from Maxim Integrated is a precision SPDT analog switch with guaranteed 3Ω max on-resistance matching between channels, 4Ω max on-resistance flatness over signal range, and <5nA off-leakage at +85°C. It operates from ±4.5V to ±20V bipolar or +10V to +30V single supply, supports rail-to-rail signal handling, and delivers <175ns tON / <145ns tOFF switching for audio routing and test equipment signal path control.

For engineers reviewing the DG419DY datasheet, DG419DY pinout, DG419DY application, or DG419DY equivalent, this page provides verified electrical parameters, truth-table-validated SPDT logic behavior, thermal leakage performance at +85°C, charge injection (≤10pC), and ESD tolerance (2000V per Method 3015.7) - all confirmed for the SO-8 packaged DG419DY variant.

Technical Context

The DG419DY implements a monolithic CMOS SPDT switch architecture with separate normally closed (S1) and normally open (S2) source terminals controlled by a single TTL/CMOS-compatible logic input (IN). Its silicon-gate 44V process enables operation across wide supply ranges while maintaining guaranteed RDS(ON) match and flatness only under bipolar-supply conditions.

Switching is break-before-make with ≤13ns interval, supported by low charge injection (≤10pC) and high off-isolation (68dB at 1MHz). Signal paths handle ±15.5V analog voltages with rail-to-rail capability, and leakage currents are fully tested at maximum rated hot temperature (−40°C to +85°C).

Key Specifications

Pinout & Package

Package: 8-pin SOIC (SO) with −40°C to +85°C operating temperature range, lead-free and RoHS-compliant per Maxim's standard SO packaging.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DG419DY, ADG1419BRMZ offers superior analog performance at the cost of supply rigidity, while TS5A23157DCUR trades voltage range and leakage stability for footprint reduction - neither matches DG419DY's combination of wide supply support, guaranteed matching, and hot-temperature leakage validation.

Availability

DG419DY is available at Aetrix Electronics and suitable for test equipment multiplexing, military radio front-ends, and sample-and-hold circuits requiring stable component supply across extended temperature and voltage ranges.

Supply support for DG419DY 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 and mixed-signal ICs for industrial, communications, and military applications, with emphasis on precision, ruggedness, and wide operating conditions.

The DG419DY belongs to Maxim's legacy DG417/DG418/DG419 family of improved analog switches, engineered specifically for applications demanding guaranteed on-resistance matching, low charge injection, and reliable operation across −40°C to +85°C with bipolar or single-supply flexibility.

FAQ

What is the guaranteed on-resistance matching specification for DG419DY?

The DG419DY guarantees ΔRDS(ON) ≤3Ω maximum between its S1 and S2 channels under bipolar-supply operation (±4.5V to ±20V). This parameter is 100% tested and specified across the full −40°C to +85°C temperature range, ensuring matched signal path loss in dual-channel or differential configurations. The DG419DY datasheet explicitly confirms this value applies to the DG419 family including the DY grade.

Does DG419DY support single-supply operation, and what is the valid voltage range?

Yes, DG419DY supports single-supply operation from +10V to +30V with V− tied to ground. In this configuration, the analog signal range is 0V to V+, and rail-to-rail operation is maintained. The device's absolute maximum rating allows up to +44V between V+ and V−, but functional operation is limited to the +10V to +30V range for single-supply use, as confirmed in the Electrical Characteristics table and Applications Information section of the DG419DY datasheet.

What is the maximum off-leakage current of DG419DY at +85°C?

The DG419DY guarantees ID(OFF) <5nA maximum at +85°C, with 100% testing performed at that temperature. This leakage value applies to both S1 and S2 terminals when unselected, and is validated under worst-case conditions (V+ = +16.5V, V− = −16.5V, VD = ±15.5V). The specification is explicitly stated in the "New Features" and Electrical Characteristics tables for the DG419DY variant.

Is DG419DY pin-compatible with older DG419 variants like DG419CJ or DG419DJ?

Yes, DG419DY is pin-compatible with all DG419 variants in SO-8 (CY/DY) and PDIP-8 (CJ/DJ) packages, sharing identical pinout, function mapping, and truth table behavior. The DY suffix denotes the −40°C to +85°C temperature grade, while electrical specifications (including RDS(ON), leakage, and switching times) are identical across C/D/Y grades per the DG419 ordering table and parametric summary. No PCB changes are required when upgrading from DG419CJ or DG419DJ to DG419DY.

What logic levels are compatible with the IN pin of DG419DY?

The IN pin of DG419DY accepts TTL- or CMOS-compatible logic levels depending on VL configuration: when VL = +5V, VINH ≥ 2.4V and VINL ≤ 0.8V meet TTL thresholds; when VL = V+, the input becomes CMOS-compatible with VINH ≥ 0.7×V+ and VINL ≤ 0.3×V+. This dual-mode logic interface is documented in the "Existing Features" and Electrical Characteristics sections, and applies identically to the DG419DY variant.