HCF4511BEY

Display Drivers Overview

The HCF4511BEY is a monolithic integrated circuit fabricated in Metal Oxide Semiconductor technology, available in DIP and SOP packages. It functions as a BCD to 7-segment decoder driver composed of CMOS logic and n-p-n bipolar transistor output devices on a single monolithic structure. This device combines the low quiescent power dissipation and high noise immunity features of CMOS with n-p-n bipolar output transistors capable of sourcing up to 25mA. This capability allows the HCF4511B to drive LEDs and other displays directly. Lamp Test (LT), Blanking (BL), and Latch Enable or Strobe inputs are provided to test the display, shut off or intensity-modulate it, and store or strobe a BCD code, respectively.

Display Drivers Feature Summary

• High output sourcing capability up to 25mA for direct LED driving
• Input latches for BCD code storage
• Lamp test and blanking capability
• Seven-segment outputs blanked for BCD input codes greater than 1001

Display Drivers Applications

• Driving seven-segment LED displays
• BCD to decimal decoding
• Digital display systems requiring latch functionality

Display Drivers Procurement Notes

Verify that the ordering suffix corresponds to the required package type, such as PDIP or SOP, as indicated by the specific part number variant. Confirm that the component meets JEDEC JESD13B standard specifications for B series CMOS devices. Ensure compatibility with the intended supply voltage ratings of 5V, 10V, or 15V for the specific application environment.

Display Drivers Selection Notes

Select this component when a combination of CMOS input logic and bipolar output current sourcing is required. The internal latching feature simplifies design by storing BCD codes without external memory components. Consider the 25mA output capability for direct drive applications, eliminating the need for additional buffer transistors in many common cathode LED display configurations.

Display Drivers Part Context

The HCF4511B belongs to the HCF45xx series of CMOS logic devices manufactured by STMicroelectronics. These devices are designed for general-purpose digital applications requiring high noise immunity and low power consumption. The BCD to seven-segment decoder function is a standard building block in digital instrumentation and consumer electronics for visual data representation.

Display Drivers Replacement Considerations

Compatible substitutes include the HCF4511BC1 and other variants within the HCF4511 family from STMicroelectronics. Verify pinout compatibility and electrical characteristics before substitution. Other manufacturers offering equivalent BCD to seven-segment latch/decoder/driver ICs may be considered if they meet the same functional and electrical requirements.