Analog Devices Inc./Maxim Integrated DG301ABK

Overview

DG301ABK from Maxim Integrated is a dual single-pole double-throw (SPDT) CMOS analog switch with TTL/CMOS-compatible control inputs, <50Ω on-resistance, 150ns turn-on time, and ±5V to ±18V dual-supply operation. It supports break-before-make switching, low charge injection (12pC), and full V+ to V− analog signal range - ideal for portable instrumentation and low-power sample/hold circuits.

For engineers reviewing the DG301ABK datasheet, DG301ABK pinout, DG301ABK application, or DG301ABK equivalent, this page delivers verified electrical specs, package mapping to 14-lead CERDIP, functional role in signal routing, and two confirmed alternative parts with documented technical and application differences.

Technical Context

The DG301ABK implements monolithic CMOS SPDT switching with independent channel control via IN1 and IN2 inputs. Each switch features latchup-proof construction, operates across -25°C to +85°C, and maintains analog signal integrity from V− to V+ with minimal on-resistance variation (<10% channel-to-channel matching).

Its break-before-make timing (50ns interval) prevents signal shorting during state transitions, while low charge injection (12pC at 0V input) minimizes voltage glitch in precision sampling. The device accepts logic-high thresholds of 0.8V and 4.0V, enabling direct interface with TTL and CMOS logic families without level-shifting.

Key Specifications

Pinout & Package

Package: 14-lead CERDIP (Ceramic Dual In-line Package), hermetically sealed, suitable for industrial and extended-temperature applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DG301ABK, ADG1419BRUZ offers superior R_DS(ON) but lacks native TTL compatibility, while TS5A3157DCKR sacrifices voltage range and reliability features for size and cost - making DG301ABK the optimal choice for rugged, dual-supply, TTL-driven industrial signal routing.

Availability

DG301ABK is available at Aetrix Electronics and suitable for portable instrumentation, low-power sample/hold circuits, and programmable gain amplifier designs requiring stable component supply across extended temperature ranges.

Supply support for DG301ABK 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, medical, and communications applications.

The DG301ABK belongs to the DG300A family of TTL-compatible CMOS analog switches engineered for reliable signal routing in battery-powered and high-reliability systems where rail-to-rail analog range and low power are essential.

FAQ

What is the operating temperature range for DG301ABK?

The DG301ABK is rated for operation from -25°C to +85°C, as indicated by the "B" suffix in its part number. This extended industrial temperature range makes it suitable for deployment in outdoor telemetry units, factory-floor instrumentation, and automotive under-hood monitoring systems where ambient conditions exceed commercial-grade limits. The CERDIP package further enhances thermal stability and long-term reliability under thermal cycling.

Does DG301ABK support single-supply operation?

Yes, DG301ABK supports single-supply operation by connecting the V− pin to GND. When configured this way, it functions with V+ supplies ranging from +10V to +30V while maintaining full analog signal switching from 0V to V+. This capability eliminates the need for dual-rail power supplies in portable equipment, reducing bill-of-materials cost and board space - a key advantage confirmed in Maxim's Applications Information section.

What does "break-before-make" mean for DG301ABK?

Break-before-make in DG301ABK refers to a guaranteed 50ns minimum interval during which both SPDT paths are simultaneously open before the new path closes - preventing momentary short-circuits between signal sources. This behavior is explicitly tested and specified for DG301(A)/DG303(A) variants per the Break-Before-Make Time Test Circuit (Figure 2). It is essential for protecting sensitive analog sources like sensor bridges or precision references during channel switching.

Can DG301ABK interface directly with 5V TTL logic?

Yes, DG301ABK features fully TTL-compatible digital inputs with logic-high threshold of 0.8V (min) and 4.0V (typ), allowing direct connection to standard 5V TTL outputs without level shifters or pull-up resistors. Its input current remains below ±1µA across temperature, minimizing loading on driving logic. This compatibility is explicitly stated in the Features and Electrical Characteristics sections of the datasheet.

What is the maximum analog signal voltage DG301ABK can switch?

DG301ABK can switch analog signals from V− to V+, supporting a full ±15V range when powered with ±15V supplies. Absolute maximum ratings allow V+ up to +44V (for DG301A variants) and V− down to -44V, but the usable linear analog range remains bounded by the applied supply rails. Signals exceeding V+ or V− are clamped by internal diodes - a design feature confirmed in Note 1 of the datasheet.