Renesas HI3-0509A-5Z

Overview

HI3-0509A-5Z from Intersil is a differential 4-channel CMOS analog multiplexer with active overvoltage protection, designed for fault-tolerant signal routing in industrial data acquisition systems. It supports ±15V analog signal range, 70V_P-P overvoltage tolerance, 500ns access time, and operates across 0°C to +75°C. Its break-before-make switching and fail-safe behavior during supply loss make it suitable for interfacing external sensors in telemetry and control systems.

For engineers reviewing the HI3-0509A-5Z datasheet, HI3-0509A-5Z pinout, HI3-0509A-5Z application, or HI3-0509A-5Z equivalent, key selection considerations include its differential 4-channel architecture, Pb-free 16-lead PDIP package, ±15V rail-to-rail analog range, 12pF channel output capacitance, and 1.5kΩ typical on-resistance - all critical for high-fidelity, high-reliability analog multiplexing under fault conditions.

Technical Context

The HI3-0509A-5Z implements dielectrically isolated CMOS (CMOS-DI) technology with integrated overvoltage clamping circuitry that maintains signal integrity when analog inputs exceed ±15V supplies by up to ±33V. Its dual differential outputs (OUT A/OUT B) are controlled via two address bits (A0, A1) and an enable input, supporting four independent differential channel pairs.

Each channel features 1kΩ fail-safe resistance during power loss, no channel interaction under overvoltage, and TTL/DTL-compatible digital inputs with 4V logic-high threshold. The device draws only 0.5mA I+ and 0.02mA I− at ±15V, enabling low-power operation without sacrificing robustness.

Key Specifications

Pinout & Package

HI3-0509A-5Z is housed in a 16-lead plastic dual-in-line package (PDIP), RoHS-compliant and Pb-free per Intersil's e3 matte tin anneal finish. Package drawing E16.3 defines mechanical dimensions: 0.735–0.775 inch length, 0.300–0.325 inch width, 0.210 inch max height, with 0.100 inch lead pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HI3-0509A-5 and ADG509F, the HI3-0509A-5Z uniquely combines Pb-free compliance, guaranteed break-before-make timing, and sub-nA leakage in a single 16-pin PDIP package - making it the preferred choice for new industrial designs requiring both regulatory compliance and metrological integrity.

Availability

HI3-0509A-5Z is available at Aetrix Electronics and suitable for industrial data acquisition systems, telemetry infrastructure, and programmable logic controller I/O modules requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.

Supply support for HI3-0509A-5Z 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 high-performance analog and mixed-signal ICs for industrial, aerospace, and defense applications.

The HI-509A family was engineered specifically for fault-tolerant analog signal routing in harsh environments, emphasizing overvoltage resilience, channel isolation, and fail-safe behavior during power anomalies.

FAQ

What is the maximum continuous overvoltage rating for HI3-0509A-5Z?

The HI3-0509A-5Z supports continuous analog input overvoltage up to ±33V beyond its ±15V supplies, resulting in a total 70V_P-P tolerance. This is verified per datasheet Figure 3A and Absolute Maximum Ratings table, ensuring reliable operation without damage or signal path disturbance even under sustained fault conditions.

Does HI3-0509A-5Z require external pull-up resistors on address or enable pins?

No, HI3-0509A-5Z does not require external pull-up resistors on A0, A1, or EN pins when driven from TTL/DTL sources. Its digital inputs have a 4V logic-high threshold and internal level-shifting circuitry; however, a 1kΩ pull-up to +5V is recommended only if driving from open-collector or high-impedance sources per datasheet Note 11.

Can HI3-0509A-5Z operate with supplies other than ±15V?

Yes, HI3-0509A-5Z supports supply voltages from ±5V to ±22V (V+ to GND) and ±25V (V− to GND), with analog signal range tracking supply rails. Performance parameters like on-resistance and access time are characterized at ±15V, but functional operation is guaranteed across the full ±44V V+–V− range per Absolute Maximum Ratings.

What is the thermal limit for HI3-0509A-5Z in its PDIP package?

The maximum junction temperature for HI3-0509A-5Z in the 16-lead PDIP package is +150°C, with a typical θ_JA of 90°C/W. This allows operation up to +75°C ambient with ≤0.83W power dissipation margin, consistent with its 7.5mW typical power consumption at ±15V supplies.

How does HI3-0509A-5Z achieve fail-safe behavior during power loss?

During supply loss, HI3-0509A-5Z presents 1kΩ resistance at each analog input terminal due to internal protection circuitry, preventing uncontrolled current flow and maintaining defined impedance. This behavior is inherent to its dielectrically isolated CMOS process and is documented in the Functional Diagram (Page 5) and Features list.