The 74C821ASO is an 10-bit bus interface register with 3-state outputs, originally manufactured by AMD. It's part of the 74C series of CMOS logic devices, known for their low power consumption and wide operating voltage range.

Applications

• Microprocessor Systems: Used as a buffer or register to interface between a microprocessor and memory or peripheral devices.
• Data Acquisition Systems: Employed to temporarily store data acquired from sensors or other input devices.
• Industrial Control Systems: Used to control and monitor various parameters in industrial processes.
• Memory Interfacing: Acts as an interface between memory modules and the CPU.
• General Logic Applications: Suitable for any application requiring temporary storage and buffering of digital data.

Features

• 10-Bit Register: Provides storage for 10 bits of digital data.
• 3-State Outputs: Allows multiple devices to share the same bus without contention.
• High Noise Immunity: Offers good noise immunity for reliable operation in noisy environments.
• Low Power Consumption: Consumes minimal power, making it suitable for battery-powered applications.
• Wide Operating Voltage Range: Operates over a wide voltage range, typically 3V to 15V.

Benefits

• Improved System Performance: Buffering capability enhances system performance by isolating different sections of the circuit.
• Simplified Bus Architecture: 3-state outputs simplify bus architecture by allowing multiple devices to share the same bus.
• Reliable Operation: High noise immunity ensures reliable operation in noisy environments.
• Energy Efficient: Low power consumption extends battery life in portable devices.
• Versatile Usage: Suitable for a wide range of digital logic applications.

Specifications

Typical specifications include:

• Supply Voltage (VCC): 3V to 15V (Example, verify datasheet)
• Output Current (IOH/IOL): ±0.4 mA (Example, verify datasheet)
• Operating Temperature: -40°C to +85°C (Example, verify datasheet)
• Propagation Delay Time: 50 ns (Example, verify datasheet, typical)
• Input Capacitance: 5 pF (Example, verify datasheet, typical)

Always refer to the official AMD or equivalent manufacturer's datasheet for precise electrical characteristics and application guidelines.