NXP MC14489BPE

LED7 сегментСерийный

Overview

The MC14489B is a flexible light-emitting-diode driver which directly interfaces to individual lamps,7-segment displays, or various combinations of both. LEDs wired with common cathodes are driven in a multiplexed-by-5 fashion. Communication with an MCU/MPU is established through a synchro-nous serial port. The MC14489B features data retention plus decode and scan circuitry, thus relieving processor overhead.A single, current-setting resistor is the only ancillary component required.

· Operating Voltage Range of Drive Circuitry:4.5 to 5.5V · Operating Junction Temperature Range:-40° to 130℃ · 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 EMl in Low-Power Mode · Power-On Reset(POR) Blanks the Display on Power-Up, Independent of Supply Ramp Up Time · May Be Used with Double-Heterojunction LEDs for Optimum Efficiency · Chip Complexity:4300 Elements(FETs, Resistors, Capacitors, etc.)

Features

Applications

• Wal4 and table clocks
• Industrial control panels
• Portable lab instruments
• Panel meters
• Auto dashboard displays
• Appliance control panels
• Industrial Control Indicator
• Relay Driver
• Digital Clock, Thermometer, Counter, Voltmeter
• Instrumentation Readouts