SN74LS624NSR Datasheet/PDFClock/Timing - Programmable Timers and Oscillators comprise a range of devices that are used to regulate the timing and synchronization of electronic circuits. They are fundamental components of many electronic devices, providing accurate clocking and timing functions which can be finely tuned to suit the individual application. One such device is the SN74LS624NSR, a Programmable Program Oscillator (PPO) that incorporated advanced features to make it a reliable, consistent and accurate timing device.
What is the SN74LS624NSR?
SN74LS624NSR is an 8-bit Programmable Program Oscillator (PPO) which can be programmed to generate a range of timing signals from 4MHz to 500kHz. The device is based on the popular 74LS logic family, providing low noise and low power consumption, making it an ideal choice for a variety of clock/timing applications requiring accuracy and reliability. The device incorporates advanced features including adjustable frequency programming, output amplitude control and active high or active low output states.
What are the applications of the SN74LS624NSR?
The SN74LS624NSR Programmable Program Oscillator is suitable for a wide range of clock/timing applications, providing reliable and accurate clock signals. The device is ideal for use in systems such as video surveillance, automotive infotainment, access systems, point-of-sale terminals, industrial automation, and medical electronics. The device can also be used in any application requiring programmable oscillators, such as digital controllers and clock/timing circuits.
What is the Working Principle of the SN74LS624NSR?
The device is based on a self-timed oscillator, using a 4-bit output register and an active low output enable. The input register controls the four frequency bands of the output signal, with each frequency band controlled by two bits. The output enable is connected to the output register, which controls the output enable based on the output enable status. The SN74LS624NSR is programmed by connecting four input registers to the programming pins, allowing the user to set the output enable status and the four frequency bands.
The SN74LS624NSR includes an input enable (EI) pin, which can be used to enable or disable the output enable. When the EI pin is active, the device is active and the output enable is enabled. When the EI pin is inactive, the device is in sleep mode and the output enable is disabled. The SN74LS624NSR also includes an active low output enable (OE) pin, which enables the output register, allowing the signals to be generated at the output pins.
The SN74LS624NSR also includes an optional auxiliary output, which can be used to provide a finer level of control when programming the device. This auxiliary output can be used to provide a pilot control signal, allowing the user to adjust the frequency of the output signal more precisely.
Conclusion
The SN74LS624NSR Programmable Program Oscillator is a reliable and accurate device, suitable for a wide range of clock/timing applications. The device is based on the 74LS logic family, offering low power consumption and low noise operation. The device includes adjustable frequency programming, output amplitude control and active high or active low output states, making it an ideal choice for applications requiring programmable oscillators. The device can be programmed using the input registers for frequency bands, and an optional auxiliary output can also be used for a finer level of control.