Texas Instruments

SN74LS628DR  

Programmable Timers and Oscillators

SN74LS628DR Description

The SN74LS628DR is a high-performance Voltage-Controlled Oscillator (VCO) designed by Texas Instruments, a leading manufacturer in the electronics industry. This IC is part of the 74LS series and is specifically tailored for applications requiring precise frequency control and high reliability. The SN74LS628DR operates within a supply voltage range of 4.75V to 5.25V and can achieve a frequency of up to 20MHz, making it suitable for a wide range of high-speed digital applications.

SN74LS628DR Features

• Operating Temperature Range: The SN74LS628DR is designed to operate reliably within a temperature range of 0°C to 70°C, ensuring stable performance in various environmental conditions.
• Supply Current: The device consumes a low supply current of 20 mA, which is advantageous for applications with power constraints.
• Surface Mount Technology: The SN74LS628DR is available in a Surface Mount package, specifically a 14-SOIC, making it ideal for compact and high-density PCB designs.
• Compliance and Standards: The SN74LS628DR is REACH unaffected and RoHS3 compliant, ensuring it meets the latest environmental and safety standards. It also has an ECCN classification of EAR99 and an HTSUS code of 8542.39.0001.
• Moisture Sensitivity Level: With an MSL rating of 1 (Unlimited), the SN74LS628DR is highly resistant to moisture, reducing the risk of damage during the manufacturing process.
• Packaging: The device is available in Tape & Reel (TR) packaging, facilitating efficient handling and assembly in automated production lines.

SN74LS628DR Applications

The SN74LS628DR is ideal for applications that require precise frequency control and high-speed performance. Some specific use cases include:

• Telecommunications: In communication systems, the VCO can be used for frequency synthesis and modulation, ensuring reliable and high-speed data transmission.
• Clock Generation: The device can serve as a stable clock source for microprocessors, FPGAs, and other digital circuits, providing accurate timing signals.
• Frequency Synthesis: The SN74LS628DR can be used in frequency synthesizers to generate multiple frequencies from a single reference frequency, enhancing the flexibility of electronic systems.
• Test and Measurement Equipment: The high-frequency and low-jitter performance of the VCO make it suitable for precision test and measurement applications, such as spectrum analyzers and oscilloscopes.

Conclusion of SN74LS628DR

The SN74LS628DR from Texas Instruments is a robust and versatile VCO that offers high performance and reliability. Its wide operating voltage range, low supply current, and surface mount package make it an excellent choice for a variety of high-speed digital applications. The device's compliance with environmental and safety standards, along with its moisture sensitivity level, ensures it is suitable for modern manufacturing processes. Whether used in telecommunications, clock generation, frequency synthesis, or test and measurement equipment, the SN74LS628DR provides a reliable and efficient solution for precise frequency control.

SN74LS628DR Documents

Download datasheets and manufacturer documentation for SN74LS628DR

Datasheets :

SN54LS624-29, SN74LS624-29      

PCN Design/Specification :

Design 25/Feb/2022