The HI1-507-5 is a monolithic CMOS analog multiplexer with overvoltage protection, manufactured by Harris Corporation (now Intersil). It offers robust protection against input overvoltage conditions, making it suitable for applications where signal excursions beyond the power supply rails are possible. This multiplexer allows selection of one of eight analog input channels.

Applications:

• Data acquisition systems
• Process control systems
• ATE (Automatic Test Equipment)
• Medical instrumentation
• Avionics systems

Features:

• Overvoltage protection on all input channels (up to ±25V)
• Low on-resistance (typically 150Ω)
• Low leakage current (typically 1nA)
• TTL/CMOS compatible logic inputs
• Single supply operation (+10V to +16V) or dual supply operation (±5V to ±8V)
• Break-before-make switching action

Benefits:

• Enhanced system reliability due to overvoltage protection, preventing damage to the multiplexer and downstream circuitry.
• Improved signal integrity with low on-resistance and leakage current.
• Easy interfacing with digital control systems using TTL/CMOS compatible inputs.
• Flexibility in power supply configuration (single or dual supply).
• Prevention of signal shorting during channel switching with break-before-make action.

Additional Details:

The HI1-507-5 is typically packaged in a 16-pin DIP or SOIC package. The overvoltage protection feature allows the multiplexer to withstand voltage levels significantly exceeding the power supply rails without damage. The low on-resistance ensures minimal signal attenuation, while the low leakage current minimizes errors in signal measurement. The break-before-make switching prevents shorting of input signals during channel transitions.