Overview of NXP's PC74HCT393T Dual Binary Counter

The NXP PC74HCT393T is a high-speed Si-gate CMOS device that is pin-compatible with Low-power Schottky TTL (LSTTL). It is designed to deliver the functionality of two 4-bit binary counters in a single package. This integrated circuit is a crucial component in digital systems where precise counting functionality is required, such as frequency dividers, time-delay circuits, and event counters.

Key Features

• Logic Type: Dual 4-bit binary ripple counter
• Operating Voltage: Ranges from 4.5V to 5.5V, making it compatible with TTL power environments.
• High Noise Immunity: Ensures stable operation in electrically noisy environments.
• High-Speed Performance: Typical clock frequency is 63 MHz at 5V, facilitating rapid counting for demanding applications.
• Output Current: Capable of driving 15 LSTTL loads, which allows for direct interfacing with the TTL logic family without additional buffering.
• Low Power Consumption: Features a balanced propagation delay and transition time, which contributes to its energy-efficient operation.

Product Specifications

The PC74HCT393T is provided in a TSSOP14 (Thin Shrink Small Outline Package) that is optimized for reduced space on printed circuit boards. Each of the two counters has a master reset input which immediately resets the counter to its zero state when a high level is applied. The counters advance on the falling edge (negative transition) of the clock input signal, which allows for precise control of the counting sequence.

Applications

Its robust design and versatile features make the PC74HCT393T suitable for a wide range of applications, including:

• Industrial control systems
• Consumer electronics
• Instrumentation and measurement systems
• Processors and microcontrollers as a system clock

Whether it's for sophisticated industrial equipment or for simple timing tasks, the NXP PC74HCT393T offers a reliable and efficient solution for binary counting needs.