Renesas DG211CYZT

Overview

DG211CYZT from Intersil is a quad SPST analog switch IC designed for bidirectional signal routing in instrumentation and process control systems. It supports ±15V analog signal switching, features 175Ω maximum ON-resistance, 70dB OFF isolation at 100kHz, and TTL-compatible digital inputs with negative voltage tolerance. Used in data acquisition front-ends where channel isolation and rail-to-rail analog handling are critical.

For engineers reviewing the DG211CYZT datasheet, DG211CYZT pinout, DG211CYZT application, or DG211CYZT equivalent, key selection criteria include its 16-pin SOIC package, ±15V analog range, sub-500ns switching times, low 5pF OFF-capacitance per channel, and compatibility with dual-supply (±15V) and logic supply (VL = +5V) configurations.

Technical Context

The DG211CYZT implements four independent CMOS transmission gates controlled by separate TTL-level inputs, each capable of passing signals symmetrically between source (Sx) and drain (Dx) terminals across ±15V rails. Its substrate-connected V+ pin (Pin 13) requires connection to the positive supply to ensure proper latch-up immunity and channel performance.

Logic inputs accept voltages down to –0.3V and up to 25V relative to ground, enabling direct interfacing with mixed-voltage systems. The device operates only within 0°C to +70°C ambient, with thermal resistance θ_JA = 120°C/W in its SOIC package - requiring attention to power dissipation under sustained 20mA channel current loads.

Key Specifications

Pinout & Package

DG211CYZT is housed in a 16-lead narrow-body SOIC package (JEDEC MS-012-AC, pkg drawing M16.15), 3.9mm × 9.8mm footprint, 1.75mm max height, with gull-wing leads and RoHS-compliant matte tin plating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4617ESE+ and ADG1412BRUZ, DG211CYZT uniquely provides explicit V+, V−, and VL pins enabling independent optimization of analog and logic supplies - critical for noise-sensitive industrial systems where ground bounce or supply coupling must be minimized.

Availability

DG211CYZT is available at Aetrix Electronics and suitable for industrial data acquisition, process control instrumentation, and automated test equipment requiring stable component supply and long-term obsolescence management.

Supply support for DG211CYZT 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

Intersil Corporation (now part of Renesas Electronics) is a U.S.-based semiconductor company specializing in precision analog, power management, and interface ICs for industrial, aerospace, and communications markets.

The DG211 family was engineered as a cost-optimized, quad SPST analog switch platform for general-purpose signal routing in environments demanding rail-to-rail analog handling and robust logic interface - targeting instrumentation, PLCs, and legacy industrial control systems.

FAQ

What is the maximum analog signal voltage supported by DG211CYZT?

DG211CYZT supports analog signals from −15V to +15V, as specified in its Absolute Maximum Ratings and Electrical Specifications tables. This ±15V range is achievable only when V+ is connected to +15V, V− to −15V, and the analog signal remains within those rails. Exceeding these limits risks permanent damage or degraded isolation performance.

Does DG211CYZT require external pull-up or pull-down resistors on its IN1–IN4 pins?

No, DG211CYZT does not require external pull-up or pull-down resistors on IN1–IN4. Its digital inputs have built-in protection and accept logic-low voltages down to −0.3V and logic-high up to 25V. Input leakage is below ±1.0µA across the full logic range, making external biasing unnecessary unless specific noise immunity or default-state requirements exist in the host system design.

Can DG211CYZT operate with a single +5V supply instead of ±15V?

No, DG211CYZT cannot operate with only a +5V supply. Its analog channel architecture requires both V+ (+15V) and V− (−15V) rails to achieve the specified ±15V signal range and 175Ω r_DS(ON). Using only +5V would result in undefined behavior, severely limited signal swing (<±2V), and potential failure to meet datasheet isolation or leakage specifications. The VL pin must still be supplied +5V separately.

What is the purpose of the V+ (Pin 13) connection on DG211CYZT?

The V+ pin (Pin 13) on DG211CYZT connects directly to the silicon substrate and must be tied to the positive supply (+15V). This biasing prevents latch-up, ensures proper threshold control of the internal MOSFETs, and guarantees the rated analog performance - including r_DS(ON), OFF leakage, and isolation. Leaving Pin 13 unconnected or connecting it to an incorrect voltage violates the Absolute Maximum Ratings and may cause catastrophic failure.

Is DG211CYZT pin-compatible with other packages in the DG211 family, such as DG211CJ or DG211CVZ?

Yes, DG211CYZT shares identical pinout and electrical functionality with all DG211 variants (DG211CJ, DG211CJZ, DG211CY, DG211CVZ), as confirmed by the common "16 LD PDIP, SOIC, TSSOP" pin diagram and ordering table. The only differences are package type (SOIC vs. PDIP vs. TSSOP) and RoHS compliance status - all maintain the same terminal numbering, signal assignments, and truth table behavior.