Description: The MC144898 is a flexible light-emitting-diode driver which directly interfaces to individual lamps, 7-segment displays, or various combinations of both. LEOs wired with common cathodes are driven in a multiplexed-by-5 fashion. Communication with an MCU/MPU is established through a synchronous serial port. The MC144898 features data retention plus decode and scan circuitry, thus relieving processor overhead. A single, current-setting resistor is the only ancillary component required. A single device can drive anyone of the following: a 5-digit display plus decimals, a 4-1/2 digit display plus decimals and sign, or 25 lamps.

Features:

• Operating Voltage Range of Drive Circuitry: 4.5 to 5.5 V
• Operating Junction Temperature Range: -40C to 130C
• Current Sources Controlled by Single Resistor Provide Anode Drive
• Low-Resistance FET Switches Provide Direct Common Cathode Interface
• Low-Power Mode (Extinguishes the LEDs) and Brightness Controlled via Serial Port
• Special Circuitry Minimizes EMI when Display is Driven and Eliminates EMI in Low-Power Mode
• Power-On Reset (POR) Blanks the Display on Power-Up, Independent of Supply Ramp Up Time
• 20-pin SOIC

Documents: datasheet