The QD8253-5, manufactured by Rochester Electronics, is a programmable interval timer. It's designed for generating accurate timing signals and square waves for various applications. As a programmable device, its operational characteristics can be modified through software, offering flexibility in diverse timing-related tasks.

Applications

• Real-time clocks
• Frequency generators
• Event counters
• Watchdog timers
• Motor speed control
• Tone generation for audio systems

Features

• Three independent 16-bit counters
• Six programmable operating modes (mode 0 to mode 5)
• Binary or BCD counting
• Maximum clock frequency of 5 MHz
• Read-back capability for counter values
• Compatible with various microprocessors
• Available in DIP (Dual In-line Package)

Benefits

• Precise Timing Control: The QD8253-5 provides accurate and reliable timing signals, essential for many real-time applications.
• Versatile Operating Modes: The six programmable modes offer flexibility in generating different types of waveforms and timing sequences.
• Multiple Independent Counters: The three counters can be used independently or cascaded for extended timing ranges.
• Simplified System Design: The integrated nature of the timer simplifies system design by providing a complete timing solution in a single chip.
• Wide Range of Applications: The QD8253-5 can be used in a variety of applications that require precise timing or frequency generation.

Additional Details

The QD8253-5 is typically packaged in a 24-pin DIP. It requires a 5V power supply. Detailed timing diagrams and programming information are available in the manufacturer's datasheet. The device is programmed through a set of control words that define the operating mode, counting format, and initial count values for each counter. Rochester Electronics often remanufactures or continues production of components, so their datasheets should be consulted for exact specifications of their version.