The HD74HC42FPEL is a high-speed 4-to-10 line decoder manufactured by Renesas Electronics America. This device utilizes silicon gate CMOS technology to achieve high-speed operation similar to equivalent bipolar Schottky TTL while maintaining the low power consumption characteristic of CMOS integrated circuits. It accepts a 4-bit binary input and activates one of its ten outputs, corresponding to the input value. The device incorporates input clamp diodes which provide protection to the inputs against static discharge and transient excess voltage.

Applications

• Memory address decoding: Used to select specific memory locations within a larger memory system.
• Data routing: Directs data to one of several possible destinations based on the input code.
• Instrumentation: Used within test and measurement equipment for signal selection and control.
• Industrial control systems: Provides digital decoding functions for controlling various industrial processes.
• Computer systems: Utilized in various computer subsystems for address decoding and control logic.

Features

• High-speed operation: Comparable to bipolar Schottky TTL.
• Low power consumption: Characteristic of CMOS devices.
• Wide operating voltage range: Operates from 2V to 6V.
• Input clamp diodes: Provides ESD protection.
• Fanout capability: Can drive multiple TTL loads.
• 4-to-10 line decoding: Decodes a 4-bit input into one of ten outputs.

Benefits

• Improved system performance: High-speed operation allows for faster processing.
• Reduced power consumption: Extends battery life in portable applications.
• Enhanced system reliability: Input clamp diodes protect against static discharge.
• Simplified circuit design: Provides a single-chip solution for 4-to-10 line decoding.
• Versatile application: Suitable for a wide range of digital systems.

Additional Details

The HD74HC42FPEL is supplied in a SOP-16 (Small Outline Package) which is suitable for surface mount technology. It is pin-compatible with standard TTL logic circuits. The operating temperature range is -40°C to +85°C. The supply voltage range is 2V to 6V. The typical propagation delay is 13ns at VCC=5V. The input logic levels are compatible with standard CMOS and TTL logic levels. The output drive capability is 10 LSTTL loads.