CD4543 logic chip

The CD4543 is a BCD to 7-segment latch/decoder/driver IC. It is designed to convert binary-coded decimal (BCD) input data into outputs that drive a 7-segment display. The IC includes latches that hold the BCD data and decode it into signals that drive a 7-segment display directly.

Key Features:

• BCD to 7-segment decoder/driver
• Latch for holding BCD input data
• Directly drives common-cathode 7-segment displays
• CMOS technology for low power consumption
• Wide supply voltage range: typically operates from 3V to 15V
• High noise immunity
• Direct compatibility with TTL and CMOS logic levels

Technical Specifications:

• Logic Family: CMOS
• Number of Outputs: 7 (for driving a 7-segment display)
• Supply Voltage Range: 3V to 15V
• Typical Operating Frequency: Up to 5 MHz at V_DD = 10V
• Power Dissipation: 500 mW (max)
• Input Voltage (V_IH): 0.7 V_DD min, 0.3 V_DD max
• Output Voltage (V_OH): V_DD – 0.05V min

Applications:

• Digital panel meters
• Clocks and timers with 7-segment displays
• Counters and frequency displays

Datasheet:
For detailed technical information, refer to the CD4543 Datasheet.