Product Description
The SN74LS163AN is a 4-bit binary counter integrated circuit (IC) from Texas Instruments, designed to count in binary and provide a variety of counting and timing operations in digital circuits. It belongs to the Low Power Schottky (LS) logic family, which offers low power consumption and high-speed operation compared to standard TTL (Transistor-Transistor Logic) devices.
Key Features:
- 4-bit Binary Counter: The IC is a 4-bit synchronous binary counter, meaning it can count from 0 to 15 in binary (0000 to 1111). It counts in binary on the rising edge of the clock signal.
- Synchronous Operation: The counter is triggered by the clock input and counts synchronously across all four bits. All flip-flops within the IC are clocked simultaneously to ensure precise timing.
- Asynchronous Clear: The IC has an asynchronous reset (clear) input that, when activated, resets the counter to 0 regardless of the clock signal. This provides a method for quickly clearing the counter's state.
- Terminal Count Output: The IC provides a terminal count (TC) output that goes high (logic 1) when the counter reaches its maximum count value (15 in binary). This is useful for triggering other circuits or devices once the count has completed.
- Active HIGH Enable: The counter has an enable input, which must be HIGH for the counter to increment. If the enable input is LOW, the counter is disabled, and no counting occurs.
- Low Power Consumption: As part of the LS series, it operates with reduced power consumption compared to traditional TTL counters, making it suitable for energy-efficient designs.
- TTL Compatible: Fully compatible with standard TTL logic systems, operating with a 5V supply voltage.
Applications:
- Counting Circuits: Used in systems where a binary count is required, such as in frequency dividers, digital clocks, timers, and counters in sequential logic circuits.
- Frequency Division: Can be used to divide the frequency of a clock signal by a factor of 16, useful in timing and frequency generation applications.
- Event Counting: Suitable for counting occurrences of events in systems like pulse counters or digital metering.
- Control Systems: The IC can be used in control logic systems that need to track counts or provide timing control.
- Sequential Logic Systems: Employed in applications that require sequential counting or operations based on a clock signal.
Pin Configuration:
- Clock Input (CLK): The clock signal used to trigger counting.
- Enable Input (EN): The enable input used to activate the counter. When LOW, the counter is disabled.
- Clear Input (CLR): The asynchronous reset input used to reset the counter to 0.
- Output Pins (Q0 to Q3): The 4-bit binary output representing the current count.
- Terminal Count (TC): The output that signals when the counter reaches its maximum count (15 in binary).
Typical Applications:
- Digital Clocks: Used in digital clock circuits to count time intervals or generate time-based outputs.
- Event Counters: Can be used in systems to count specific events, such as pulses or triggers.
- Frequency Dividers: In communication systems or digital circuits, it can divide a clock signal by 16.
- Digital Signal Processors: Can be used in DSP systems to maintain counters for specific tasks or operations.
The SN74LS163AN is a versatile 4-bit binary counter that is used in a variety of applications, providing reliable counting and timing functionality in TTL-compatible systems.
