Product Overview: NXP SA555 - Precision Timer

The NXP SA555 is a high-performance precision timer capable of producing accurate time delays or oscillation. In the time-delay or mono-stable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the astable mode of operation, the frequency and duty cycle can be independently controlled with two external resistors and a single external capacitor.

The SA555 timer is a direct replacement for SE555 and NE555. It features a reduced supply current compared to the standard SE555/NE555, thus making it suitable for low-power applications. With a wide supply voltage range from 4.5V to 18V, the SA555 provides a high output current and is capable of driving TTL. Its performance is characterized for operation from -40°C to 85°C, making it reliable in a broad range of environments.

Key Features

• Timing from microseconds to hours
• Operates in both astable and monostable modes
• Adjustable duty cycle
• Output can source or sink 200 mA
• Output and supply TTL compatible
• Temperature stability of 0.005% per °C
• Normally on and normally off output
• Available in 8-pin PDIP, SOIC, and VSSOP packages

Applications

The versatility of the SA555 timer makes it ideal for an extensive range of applications, including precision timing, pulse generation, sequential timing, time delay generation, and as part of a pulse-width modulation (PWM) circuit. Its robust design and wide operating temperature range make it suitable for consumer electronics, industrial control systems, touch switches, frequency dividers, and many other applications that require a reliable timing solution.

Quality and Reliability

NXP Semiconductors is committed to delivering high-quality and reliable components. The SA555 precision timer is built with this commitment in mind, ensuring consistent performance and durability for the life of your product. By choosing the NXP SA555, you are selecting a timer that is not only precise but also backed by a trusted name in the semiconductor industry.