NXP HEF4794BP 8-bit Shift Register with Output Latches

The NXP HEF4794BP is a high-performance, 8-bit serial-in/parallel-out shift register designed for use in a wide range of digital applications. This integrated circuit (IC) is part of the HEF4000 family, renowned for its robustness and versatility in various electronic systems. The HEF4794BP is particularly suitable for interfacing with microprocessors or microcontrollers where additional parallel outputs are required.

Constructed with silicon gate CMOS technology, the HEF4794BP ensures low power consumption along with high noise immunity. The device features an 8-bit serial input (DIN) and 8 parallel output pins (Q0 to Q7). Each output can be latched to hold its state even as new data is shifted into the register, making the device ideal for driving LEDs, relays, or other output devices that require stable signals.

The shift register operates with a positive-edge clock input (CP) and includes a direct clear input (MR) for resetting the internal registers. The output enable input (OE) allows the user to control the output transition from high impedance to active state, providing additional flexibility in controlling connected loads.

Key features of the HEF4794BP include:

• 8-bit serial input and parallel output capability
• Output latching function for data stability
• Low power consumption due to CMOS technology
• High noise immunity characteristic of the HEF4000 family
• Wide operating voltage range from 3V to 15V
• Output capability of 15 mA, suitable for driving LEDs
• Simple interface with microprocessors and digital systems

The HEF4794BP is packaged in a 16-pin DIP (Dual In-line Package), making it easy to handle and integrate into breadboards or printed circuit boards (PCBs) for prototyping or production. Its standardized pin configuration ensures compatibility with a broad range of existing designs and equipment.

Whether you are developing consumer electronics, industrial control systems, or interactive installations, the NXP HEF4794BP offers a reliable solution for expanding output capabilities while maintaining signal integrity and minimizing power consumption.