SN74LS169BNSR

Timing:	Synchronous
Base Part Number:	74LS169
Supplier Device Package:	16-SO
Package / Case:	16-SOIC (0.209", 5.30mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
Voltage - Supply:	4.75V ~ 5.25V
Trigger Type:	Positive Edge
Count Rate:	25MHz
Series:	74LS
Reset:	--
Number of Bits per Element:	4
Number of Elements:	1
Direction:	Up, Down
Logic Type:	Binary Counter
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

The SN74LS169BNSR is a 4-bit presettable binary up-counter from the SN74LS Series of logic products. This counter features full synchronous and asynchronous operation and can be used to create divide-by-N applications. It is commonly used in counters, dividers, timing, and logic applications.

Design

The SN74LS169BNSR is a 4-bit Synchronous/Asynchronous Presettable Binary Up Counter. It has a maximum count of 15 and can operate at very high-speeds with a maximum speed of 25Mhz. It is a synchronous device, meaning that all stages of the counter must be clocked at the same time. It has a wide number of applications, including counter, divider, timer and logic functions. The SN74LS169BNSR is designed such that the output of each stage can be preset or reset to any desired value. This means that the value placed at the outputs can be preset after being reset. This feature allows for greater control and flexibility in the application of the SN74LS169BNSR.

Features and Benefits

The wide application of the SN74LS169BNSR makes it one of the most widely used logic products. Some of the key features of the device include:

• Full Synchronous and Asynchronous operation
• High-speed operation up to 25Mhz
• Outputs can be preset or reset
• Wide application including counter, divider, timer and logic functions

The features of the SN74LS169BNSR make it an attractive option for many different applications. The ability to preset or reset the outputs gives users greater flexibility and control. The high-speed operation makes it ideal for applications that require fast response times. It is also a highly efficient and reliable device, making it one of the most popular logic products.

Application Fields

The SN74LS169BNSR is commonly used in counters, dividers, timing, and logic applications. It is used in applications such as frequency dividers and timers. It can also be used to create digital control circuits and circuit protection systems. In addition, the SN74LS169BNSR has been used in applications such as alarms, time-lapse programs, signal generation, signal detection, and optical storage systems.

Working Principle

The SN74LS169BNSR works on various logic principles. Its main working principle is based on the concept of clocking, which is controlled manually. When the count is set, the up/down signal starts and the counter starts to count. The clocking is carried out by the clock source and clock enable. The clock source is responsible for triggering the clock signals. When a new count is set, the clock source sends out a trigger signal which causes the count to begin. The clock enable signal is used to enable or disable the clock signals. When the enable signal is asserted, the clock signals are enabled and the count begins.

Conclusion

The SN74LS169BNSR is an effective solution for creating divide-by-N applications. It has many features and benefits, including synchronous and asynchronous operation, high-speed operation, ability to preset and reset outputs, wide application and efficient and reliable operation. It is commonly used in counters, dividers, timing and logic applications. The working principle involves clocking and manual control of the count.

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