The MC74HC42N is a high-speed BCD-to-Decimal Decoder. This device accepts a 4-bit BCD input and provides 10 mutually exclusive outputs corresponding to the decimal digits 0 through 9. It's suitable for applications requiring decimal decoding, such as display drivers and code converters.

Applications

• BCD-to-Decimal conversion
• Display drivers (e.g., LED, LCD)
• Code converters
• Address decoding
• Keyboard encoders
• Instrumentation and control systems

Features

• High Speed Operation: tPD = 13 ns (typ) at VCC = 5V
• Low Power Dissipation: ICC = 4 μA (max) at TA = 25°C
• High Noise Immunity: VNIH = VNIL = 30 % VCC
• Operating Voltage Range: 2V to 6V
• BCD-to-Decimal Decoding
• 10 Mutually Exclusive Outputs
• Active Low Outputs

Benefits

• Fast decoding speed for real-time applications.
• Low power consumption for energy-efficient designs.
• Reliable operation in noisy environments.
• Directly drives LEDs or other display elements.
• Simplified circuit design due to integrated decoding function.
• Versatile use in a wide range of digital systems.

The MC74HC42N is a BCD-to-Decimal decoder fabricated using silicon-gate CMOS technology. It accepts a 4-bit BCD input (A, B, C, D) and produces ten mutually exclusive active-low outputs (Y0-Y9). When a valid BCD code is applied to the inputs, the corresponding output goes low, while all other outputs remain high. The device operates from a supply voltage of 2V to 6V and is compatible with standard TTL logic levels. It is commonly available in a through-hole DIP package.