The DM54L90J/883C is a decade counter manufactured by National Semiconductor (now Texas Instruments). This device is a monolithic counter capable of dividing by 2 and by 5, offering versatile counting and frequency division functions. The /883C designation indicates adherence to stringent military-grade specifications, ensuring high reliability and performance over a wide temperature range.

Applications

• Frequency Dividers
• Digital Clocks
• Timers
• Control Systems
• Instrumentation
• Military and Aerospace Systems

Features

• Divide-by-Two and Divide-by-Five Counters
• Low Power Consumption
• Reset-to-Zero Capability
• Military Temperature Range: -55°C to +125°C
• Ceramic Package for Enhanced Reliability

Benefits

• Provides versatile counting and frequency division functions in a single package.
• Low power consumption makes it suitable for battery-powered applications.
• Reset-to-zero capability simplifies initialization and control.
• Guaranteed performance over a wide temperature range for use in harsh environments.
• Military-grade manufacturing ensures long-term reliability in critical applications.

The DM54L90J/883C is a 4-bit decade counter. It consists of four master-slave flip-flops and additional gating to provide a divide-by-two counter and a divide-by-five counter. The outputs of the counters can be combined to achieve a divide-by-ten function. The device operates from a standard 5V power supply. The low power consumption makes it suitable for portable and battery-powered applications. The ceramic package provides excellent hermeticity and resistance to environmental stresses. It finds application in frequency synthesis, digital clocks, and various instrumentation systems. The counter can be reset to zero by applying a high level to the reset inputs.