MC14489 查看數據表（PDF） - Motorola => Freescale

零件编号

产品描述 (功能)

生产厂家

MC14489

Multi-Character LED Display/Lamp Driver

Motorola => Freescale 

+5V

CMOS

MCU/MPU

LED DISPLAY

8

5

VDD

Rx

MC14489

VSS

+5V

R1

R2

NOTE: R1 limits the maximum current to avoid damaging the display and/or the MC14489

due to overheating. See the Thermal Considerations section. An 1/8 watt resistor

may be used for R1. R2 is a 1 kΩ or 5 kΩ potentiometer (≥ 1/8 watt). R2 may be a

light–sensitive resistor.

Figure 15. Common–Cathode LED Display with Dial–Adjusted Brightness

UNIVERSAL OVERFLOW

(“1” OR “HALF–DIGIT”)

5–DIGIT DISPLAY

USE TO DRIVE LAMP

OR MINUS SIGN

h

7

1 23 4 5

BANK OUTPUTS

MC14489

a TO g

3

INPUT LINES

NOTE: A Universal Overflow pins out all anodes and cathodes.

Figure 16. Driving 5 1/2 Digits

MOTOROLA

MC14489

15

Share Link: