10PCS SN74LS688N IC Comparator Identity 8B 20DIP LS688 74LS688

Description

Product Overview

The SN74LS688N is a high‑performance comparator designed for demanding industrial and scientific applications. Packaged in a 20‑pin DIP (0.300″/7.62mm) case, this component offers a compact footprint while delivering a maximum propagation delay of just 23 ns at a 5 V supply and 45 pF load capacitance. Its output stage can source or sink up to 400 µA, providing reliable high and low logic levels even under moderate load conditions. Operating temperature ranges from 0 °C to 70 °C ensure stable operation in typical indoor environments, while the device’s low power consumption (24 mA maximum) makes it suitable for energy‑conscious designs. The part is manufactured by CHUANGYEIC, a reputable supplier known for consistent quality and adherence to industry standards.

Key electrical specifications include a typical input voltage range compatible with TTL logic levels, a low input bias current, and a robust output driver capable of handling up to 24 mA. The device’s pinout follows the standard 20‑DIP layout, simplifying board layout and allowing easy integration into existing designs. With a package dimension of 5.55 × 3.82 × 0.94 inches and a weight of 1.23 ounces, the component is lightweight yet durable, suitable for both prototype and production runs. The SN74LS688N’s fast response time and precise threshold control make it an excellent choice for applications such as analog‑to‑digital conversion, pulse‑width modulation, and signal conditioning.

Usage

Engineers and technicians can employ the SN74LS688N comparator in a wide variety of signal processing scenarios. Its rapid propagation delay is particularly advantageous in high‑speed data acquisition systems where timing accuracy is critical. The device excels in environments that require reliable voltage level detection, such as industrial control panels, sensor interfaces, and communication equipment. Because the comparator can operate reliably within a 0 °C to 70 °C temperature window, it is well‑suited for indoor automation systems, laboratory instrumentation, and educational kits that experience moderate temperature fluctuations.

In addition to traditional comparator roles, the SN74LS688N can be used to implement window comparators, zero‑cross detectors, and programmable threshold circuits when paired with external reference voltages. Its ability to handle up to 45 pF of load capacitance allows designers to connect the comparator directly to modestly capacitive inputs without degrading performance. The 10‑piece pack provides sufficient quantity for development, testing, and small‑scale production, ensuring that designers have the flexibility to experiment with multiple circuit configurations before committing to larger orders.

Why Choose Us

Choosing the SN74LS688N from CHUANGYEIC means selecting a component backed by rigorous quality control and a track record of reliability. Each unit undergoes comprehensive testing to verify compliance with specified electrical characteristics, guaranteeing that the comparator performs as advertised across its entire operating range. Our distribution network ensures prompt delivery, and our technical support team is available to assist with schematic design, layout optimization, and troubleshooting.

We prioritize customer satisfaction by offering competitive pricing for bulk purchases, flexible return policies, and detailed datasheets that simplify integration. The SN74LS688N’s combination of speed, low power consumption, and robust output drive makes it a cost‑effective solution for both hobbyist projects and professional engineering applications. By partnering with CHUANGYEIC, you gain access to a reliable supply chain and the confidence that your designs will meet performance expectations without unexpected failures.

Key Features

• Fast 23 ns propagation delay ensures rapid signal response for high‑speed applications
• Reliable 400 µA output current provides strong logic level switching under load
• Wide operating temperature range (0 °C‑70 °C) supports diverse indoor environments
• Compact 20‑DIP package simplifies board layout and reduces footprint
• Dedicated technical support and after‑sales service for seamless integration

FAQ

What is the maximum load capacitance the SN74LS688N can drive?

The comparator can handle up to 45 pF of load capacitance while maintaining its specified 23 ns propagation delay.

Can the SN74LS688N be used with a 3.3 V supply?

Yes, the device operates correctly with supply voltages ranging from 4.5 V to 5.5 V, making it compatible with 3.3 V logic levels when proper biasing is applied.

Is the SN74LS688N suitable for battery‑powered applications?

With a typical current consumption of 24 mA, the comparator is efficient enough for many battery‑operated designs, especially when duty‑cycled or used intermittently.

How many units are included in the package?

The listing provides a pack of 10 individual SN74LS688N comparators, ideal for prototyping and small‑scale production.

What warranty does CHUANGYEIC offer for this component?

CHUANGYEIC provides a standard limited warranty covering manufacturing defects, along with responsive technical assistance for any integration questions.