The Texas Instruments CD4056BE is a CMOS BCD-to-7-segment latch/decoder/driver designed for LCD displays. It accepts a 4-bit BCD input and drives the segments of a single LCD digit, making it a direct fit for panel meters, instrumentation readouts, and battery-powered portable equipment where the 3V to 18V supply range and 40 nA typical quiescent current are design enablers. The -55°C to 125°C operating temperature range covers military and industrial environments — no commercial-grade derating needed for an outdoor or engine-bay display.
The 16-PDIP supplier package code matches the 16-DIP package/case designation. Supply current of 40 nA typical means the driver's own draw is negligible in a battery-budget calculation — the LCD glass bias current and backlight (if any) dominate the system power.