Renesas HI9P0546-9

Overview

HI9P0546-9 from Intersil is a single 16-channel CMOS analog multiplexer with active overvoltage protection, ±15V analog signal range, 70V_P-P fault tolerance, and guaranteed r_ON matching. It operates from -40°C to +85°C in a 28-lead SOIC package and is used in industrial data acquisition systems where external sensors may exceed supply rails.

For engineers reviewing the HI9P0546-9 datasheet, HI9P0546-9 pinout, HI9P0546-9 application, or HI9P0546-9 equivalent, key selection criteria include its break-before-make switching, 500ns typical access time, 1.2kΩ typical on-resistance, and dielectrically isolated CMOS process enabling robust fault handling without channel interaction.

Technical Context

The HI9P0546-9 implements a 4-bit address decoder driving 16 independent analog switches, each protected by integrated overvoltage clamps that isolate faulted inputs up to ±33V while maintaining signal integrity on unaffected channels. Its level-shifted digital interface accepts TTL/CMOS logic levels referenced to VREF or ground.

Dielectric isolation prevents latch-up and enables operation with analog inputs exceeding either supply rail - critical for interfacing with externally powered instrumentation. The device uses a 44V CMOS-DI process, supports ±15V supplies, and features 1kΩ input resistance during supply loss to protect connected sources.

Key Specifications

Pinout & Package

HI9P0546-9 is housed in a 28-lead SOIC package (JEDEC MS-013-AE, M28.3 outline), 7.6mm wide, with 1.27mm lead pitch and gull-wing leads suitable for standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HI9P0546-9Z, the HI9P0546-9 offers identical functionality in tube packaging, while HI4P0546-5Z trades industrial temperature range and SOIC compatibility for PLCC mounting - making HI9P0546-9 the optimal choice for ruggedized, surface-mount industrial designs.

Availability

HI9P0546-9 is available at Aetrix Electronics and suitable for industrial process monitoring, avionics signal conditioning, and test & measurement equipment requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for HI9P0546-9 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 is a precision analog and power management semiconductor company, now part of Renesas Electronics, specializing in high-reliability solutions for industrial, aerospace, and infrastructure markets.

The HI-546 family was designed specifically for fault-tolerant analog signal routing in harsh environments - emphasizing overvoltage resilience, channel isolation, and guaranteed matching over raw speed or integration density.

FAQ

What is the maximum analog overvoltage the HI9P0546-9 can withstand without damage?

The HI9P0546-9 can withstand continuous analog overvoltage of ±33V relative to its supply rails, verified per datasheet Figure 3A. This protection remains active even when supplies are absent, and the device maintains signal fidelity on non-faulted channels. HI9P0546-9 achieves this via integrated clamp circuitry and dielectric isolation, eliminating need for external protection components in most industrial sensor interfaces.

Does the HI9P0546-9 support TTL-level digital control inputs?

Yes, the HI9P0546-9 supports TTL-level digital inputs with VAH = 4.0V and VAL = 0.8V, as specified in the Electrical Specifications table. Its level-shifter circuitry allows direct interfacing with standard 5V microcontrollers or FPGAs without level translation. HI9P0546-9 also tolerates digital inputs up to 4V beyond either supply rail, enhancing robustness in noisy industrial environments.

What is the typical on-resistance and matching specification for HI9P0546-9?

The HI9P0546-9 has a typical on-resistance of 1.2kΩ at ±15V and ±10V, with guaranteed matching of ≤7% between any two channels across temperature. This r_ON matching ensures consistent gain scaling across multiplexed sensor channels - critical for precision data acquisition systems. HI9P0546-9 maintains this spec across its full -40°C to +85°C operating range.

Can HI9P0546-9 operate with asymmetric supply voltages?

No - the HI9P0546-9 requires symmetrical ±15V supplies for full specification compliance, including ±15V analog signal range and 70V_P-P overvoltage capability. While Absolute Maximum Ratings allow V+ to V- up to +44V, operation outside ±15V degrades r_ON, leakage, and settling performance. HI9P0546-9 is not characterized for asymmetric rails; use only balanced supplies per datasheet test conditions.

Is HI9P0546-9 RoHS compliant and suitable for lead-free reflow?

Yes, HI9P0546-9 is Pb-Free Plus Anneal (RoHS compliant), with 100% matte tin termination and materials qualified for standard lead-free reflow profiles. Its SOIC package (M28.3) has a θ_JA of 75°C/W and is rated for peak reflow temperatures meeting IPC/JEDEC J-STD-020. HI9P0546-9 is compatible with both SnPb and Pb-free soldering processes per Intersil's Pb-Free Plus Anneal specification.