CD74HC4511PWTG4 High-Speed CMOS Logic BCD-to-7-Segment Latch/Decoder/Driver

The CD74HC4511PWTG4 is a high-performance, silicon-gate CMOS device from Texas Instruments that combines low power consumption with high processing speeds. This integrated circuit is specifically designed to interface with a BCD (Binary Coded Decimal) input signal and output a corresponding 7-segment display format, making it an ideal choice for digital clock, calculator, metering, and other numeric display applications.

This latch/decoder/driver IC features a built-in latch, BCD-to-seven segment decoder, and output drive capability. It can directly drive a 7-segment display with minimal external components, reducing overall system cost and complexity. The outputs are capable of sinking 25 mA, making it suitable for most LED displays. Additionally, the CD74HC4511PWTG4 can source up to 25 mA, allowing for the direct drive of incandescent displays.

The device's logic level inputs are compatible with standard CMOS or LSTTL outputs. It includes lamp test and blanking capability to test the display without external circuitry. The lamp test input can be used to turn on all segments of the display to verify that all LEDs are functional. The blanking input, when active, turns off all outputs, providing a means to control the display brightness or to suppress leading/trailing zeros.

The CD74HC4511PWTG4 operates over a broad voltage range from 2V to 6V and features a typical low power dissipation of 80 μW, making it suitable for battery-operated devices. Its temperature range of -55°C to 125°C ensures reliable operation in extreme environments.

Packaged in a TSSOP-16 (Thin Shrink Small Outline Package), the CD74HC4511PWTG4 offers a compact footprint for space-constrained applications. Its surface-mount design is ideal for automated assembly processes, and its lead-free finish complies with the RoHS directive, making it an environmentally friendly choice for modern electronic designs.