The NXP 74HC393DB is a high-speed Si-gate CMOS device and is pin compatible with low-power Schottky TTL (LSTTL). It is fabricated with silicon gate CMOS technology which ensures that it has the high noise immunity and low power consumption characteristic of CMOS integrated circuits, as well as the speed of LSTTL devices.

Key Features

• Logic Family: 74HC
• Logic Type: Dual 4-bit Binary Ripple Counter
• Package Type: DB (SOT108-1)
• Operating Temperature: -40°C to +125°C
• Supply Voltage Range: 2.0V to 6.0V
• Output Capability: Standard
• Propagation Delay: 18ns (typical at Vcc = 5V)
• Input Levels: CMOS level
• Output Levels: CMOS level
• IC Output Type: Differential

Product Description

The 74HC393DB consists of two 4-bit binary ripple counters with individual clocks and reset inputs for each counter. Each counter has a divide-by-two section and a divide-by-eight section, which can be used either separately or in tandem to create a divide-by-16 function. The counters advance on the falling edge of the clock signal, which makes them suitable for a wide range of timing and counting applications in industrial, commercial, and consumer products.

The reset inputs are active HIGH and when activated, they will reset the respective counter to zero. This feature allows for synchronous reset capability, which is useful in various control applications. The device also has a wide operating voltage range, making it suitable for interfacing with both TTL and CMOS logic levels.

With its robust design and versatility, the NXP 74HC393DB is ideal for use in frequency dividers, counters, and clock divider circuits where low power consumption and high noise immunity are required. Its standard DB package allows for easy integration into a variety of circuit boards and systems.