The MM54HC390J/883C is a High-Speed CMOS Dual 4-Stage Decade Counter manufactured by National Semiconductor (now Texas Instruments). The '/883C' suffix indicates that this part is compliant with military standard 883, meaning it is designed and tested to meet stringent requirements for performance and reliability in harsh environments.

Applications

• Frequency Dividers: Dividing a high-frequency clock signal into lower frequencies.
• Timers: Generating precise time intervals for various control applications.
• Counters: Counting events or pulses in digital systems.
• Digital Clocks: Implementing the counting and display functions in digital clocks.
• Military and Aerospace Systems: Where high reliability and performance over a wide temperature range are required.

Features

• Dual 4-Stage Decade Counters: Contains two independent 4-stage decade (BCD) counters in a single package.
• High Speed: Operates at high clock frequencies due to the CMOS technology.
• BCD Output: Provides a Binary Coded Decimal (BCD) output for each counter.
• Reset Input: Allows resetting the counter to zero.
• Clock Enable Input: Enables or disables the counting function.
• Military Temperature Range: Operates over a wide temperature range, typically -55°C to +125°C.

Benefits

• High Reliability: Meets stringent military standards for reliability and performance.
• High Speed: Allows for high-frequency counting applications.
• Versatility: Can be used in a wide range of counting and timing applications.
• Space Saving: Dual counter in a single package saves board space.
• Ease of Use: Standard logic functions make it easy to integrate into digital systems.

Additional Details

The MM54HC390J/883C has specific propagation delays, power consumption characteristics, and voltage operating range as defined in the datasheet. The 'J' suffix likely refers to the package type (Ceramic DIP). The device is typically used in conjunction with other digital logic circuits to implement more complex functions. The 883C compliance means that the device has undergone extensive testing and screening to ensure its reliability in harsh environments.