STMicroelectronics M74HC244BI Octal Buffer/Line Driver

The M74HC244BI is a high-speed CMOS Octal Bus Buffer and Line Driver designed to interface with standard logic families. Manufactured by STMicroelectronics, this integrated circuit is engineered to provide high-performance solutions for a wide range of digital applications. It is particularly suitable for driving bus lines or buffer memory address registers, thanks to its robust output drive capability and minimal propagation delays.

The M74HC244BI features eight non-inverting buffers with 3-state outputs, which can be employed independently. The 3-state outputs allow for connection to a bus-oriented system, providing a high degree of flexibility. This device operates with an input voltage range from 2V to 6V, making it compatible with a variety of logic levels and ensuring reliable operation even under fluctuating power conditions.

Constructed with silicon gate CMOS technology, the M74HC244BI offers significant advantages in terms of power consumption and noise immunity. Its low power consumption is a critical attribute for battery-powered devices, while its high noise immunity ensures stable performance in electrically noisy environments. The device also boasts a wide operating temperature range, which makes it suitable for industrial applications.

The M74HC244BI is packaged in a 20-lead plastic dual-in-line package, ensuring ease of integration into a variety of circuit board layouts. Its pin configuration is industry-standard, which simplifies the design process and allows for compatibility with other components in a digital system.

Key features of the M74HC244BI include:

• High-speed operation: t_PD = 15 ns (typ) at V_CC = 5V
• Low power dissipation: I_CC = 4 µA (max) at T_A = 25°C
• High noise immunity: V_NIH and V_NIL = 28% V_CC (min)
• Output drive capability: 15 LSTTL loads
• Symmetrical output impedance: |I_OH| = I_OL = 6 mA (min)
• Pin and function compatible with 74 series
• ESD performance: HBM > 1 kV

Overall, the M74HC244BI from STMicroelectronics is a versatile and reliable choice for designers who require an octal buffer/line driver that delivers consistent performance with the added benefit of low power consumption and high noise immunity.