DESCRIPTION
HCF4511B is a monolithic integrated circuit fabricated in Metal Oxide Semiconductor technology available in DIP and SOP packages. HCF4511B is a BCD to 7 segment decoder driver made up 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 transistor capable of sourcing up to 25mA. This capability allows 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. Several different signals may be multiplexed and displayed when external multiplexing circuitry is used.

■ HIGH OUTPUT SOURCING CAPABILITY (up to 25mA).
■ INPUT LATCHES FOR BCD CODE STORAGE
■ LAMP TEST AND BLANKING CAPABILITY.
■ 7-SEGMENT OUTPUTS BLANKED FOR BCD INPUT CODES > 1001
■ QUIESCENT CURRENT SPECIF. UP TO 20V
■ STANDARDIZED SYMMETRICAL OUTPUT CHARACTERISTICS
■ 5V, 10V, AND 15V PARAMETRIC RATINGS
■ INPUT LEAKAGE CURRENT II = 100nA (MAX) AT VDD = 18V TA = 25°C
■ 100% TESTED FOR QUIESCENT CURRENT
■ MEETS ALL REQUIREMENTS OF JEDEC JESD13B "STANDARD SPECIFICATIONS FOR DESCRIPTION OF B SERIES CMOS DEVICES"