What this BCD-to-7-segment driver does in a panel or display board
The Texas Instruments CD74HC4511MT is a 74HC-series BCD-to-7-segment latch/decoder/driver designed to drive common-cathode LED displays. It accepts a 4-bit BCD input and drives the seven segment outputs directly, with a built-in latch to hold the displayed digit. Supply range runs from 2V to 6V, drawing just 8 µA quiescent current, which makes it suitable for battery-backed or low-power instrumentation panels. The operating temperature range of -55°C to 125°C covers military and industrial environments — think avionics, downhole tools, or outdoor telecom gear where the display must stay readable across extreme thermal cycling.
Package and mounting — SOIC-16 footprint for reflow assembly
Housed in a 16-SOIC (0.154", 3.90 mm width) surface-mount package, the CD74HC4511MT suits automated pick-and-place and reflow soldering. The supplier device package is 16-SOIC, so the land pattern and stencil aperture follow standard SOIC-16 guidelines. No exposed pad — thermal management is straightforward; the 8 µA supply current keeps self-heating negligible even at 6V.
Lifecycle and sourcing — active, no obsolescence concern
The CD74HC4511MT carries an Active product status with ROHS3 compliance.