Renesas HI3-0546-5

Overview

HI3-0546-5 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 -55°C to +125°C in 28-lead CERDIP packaging and is used in industrial data acquisition systems where external sensor inputs may exceed supply rails.

For engineers reviewing the HI3-0546-5 datasheet, HI3-0546-5 pinout, HI3-0546-5 application, or HI3-0546-5 equivalent, this device delivers verified break-before-make switching, 500 ns typical access time, and dielectrically isolated CMOS technology for robust channel-to-channel isolation under overvoltage fault conditions.

Technical Context

The HI3-0546-5 implements a 4-bit address decoder (A0–A3) with enable control to select one of 16 analog input channels to a common output. Its overvoltage protection circuitry clamps analog inputs up to ±33V while maintaining 1 kΩ fault resistance and preventing signal path disturbance on unselected channels.

It uses 44V dielectrically isolated CMOS process technology, supports TTL/CMOS logic levels via internal level shifters, and features active signal isolation that prevents cross-talk during ±20V analog overvoltage events - confirmed by test data showing <0.1 pF input-to-output capacitance and <50 nA off-leakage at full temperature range.

Key Specifications

Pinout & Package

HI3-0546-5 is supplied in a 28-lead Ceramic Dual-In-Line Package (CERDIP), hermetically sealed with frit glass, rated for -55°C to +125°C operation and MIL-STD-883 compliance options.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HI3-0546-5, HI9P0546-9Z trades military-grade temperature range and hermetic reliability for modern SMT manufacturability, while HI4P0546-5Z offers intermediate thermal performance in a rugged, leaded plastic package - neither is pin-compatible due to differing package geometries and thermal pad configurations.

Availability

HI3-0546-5 is available at Aetrix Electronics and suitable for industrial data acquisition, avionics sensor monitoring, and process control systems requiring stable component supply across extended temperature and high-reliability environments.

Supply support for HI3-0546-5 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 provider of precision analog and power management ICs, now part of Renesas Electronics, with expertise in high-reliability, radiation-tolerant, and extended-temperature semiconductor solutions.

The HI-546 family was designed specifically for fault-tolerant analog signal routing in harsh environments - emphasizing overvoltage resilience, channel isolation, and parametric stability across military and aerospace operating conditions.

FAQ

What is the maximum analog overvoltage the HI3-0546-5 can sustain continuously?

The HI3-0546-5 sustains ±33V analog overvoltage continuously while limiting input current to 4.0 nA typical and maintaining 1 kΩ fault resistance. This is validated per Note 4 in the Electrical Specifications table and confirmed by Figure 3A, which shows stable leakage behavior up to ±33V under steady-state conditions - exceeding the 70V_P-P rating under dynamic fault scenarios.

Does the HI3-0546-5 require external pull-up resistors on address lines?

No, the HI3-0546-5 includes internal level-shifting circuitry that accepts standard TTL logic levels (0.8V low, 4.0V high) without external pull-ups. The datasheet explicitly states in Note 8 that pull-ups are recommended only when driving from DTL/TTL circuits - not required for CMOS or microcontroller GPIO interfaces.

Is the HI3-0546-5 pin-compatible with other members of the HI-546 family such as HI3-0547-5Z?

No, the HI3-0546-5 is not pin-compatible with HI3-0547-5Z. While both use 28-lead PDIP packages, the HI3-0547-5Z is an 8-channel differential MUX with distinct pin assignments (e.g., dual outputs OUT A/OUT B, paired inputs IN xA/IN xB), whereas the HI3-0546-5 is a 16-channel single-ended device with a single OUT and 16 IN pins - confirmed by separate pinout diagrams on pages 2–3 of FN3150 Rev 7.00.

What is the guaranteed r_ON matching specification for the HI3-0546-5 across temperature?

The HI3-0546-5 guarantees Δr_ON ≤7.0% between any two channels at 25°C, as specified in the Electrical Specifications table. While the datasheet does not extend this guarantee across full temperature range, Figure 1B shows r_ON variation remains within ±10% from -55°C to +125°C - consistent with the 7% spec at room temperature and supporting precision ratio-metric applications.

Can the HI3-0546-5 operate with asymmetric supply voltages such as +12V/-5V?

Yes, the HI3-0546-5 supports asymmetric supplies as long as the absolute difference between +V_SUPPLY and -V_SUPPLY does not exceed 44V and each rail stays within Absolute Maximum Ratings: +V_SUPPLY to GND ≤+22V and -V_SUPPLY to GND ≥-25V. Operation at +12V/-5V (17V total) is well within these limits and maintains full analog signal range and overvoltage protection functionality.