MC14547BCP Просмотр технического описания (PDF) - Motorola => Freescale

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Компоненты Описание

производитель

MC14547BCP

High Current BCD-to-Seven Segment Decoder/Driver

Motorola => Freescale 

CONNECTIONS TO VARIOUS DISPLAY READOUTS

LIGHT EMITTING DIODE (LED) READOUT

VDD

VDD

COMMON

CATHODE LED

COMMON

ANODE LED

≈ 1.7 V

≈ 1.7 V

VSS

INCANDESCENT READOUT

VDD

VDD

**

VSS

LIGHT–EMITTING DIODE (LED) READOUT

USING A ZENER DIODE TO REPLACE DROPPING RESISTORS

VDD

COMMON

CATHODE LED

VSS

GAS DISCHARGE READOUT

APPROPRIATE

VDD

VOLTAGE

VSS

* VZD should be set at VDD – 1.3 V – VLED. Wattage of zener diode

must be calculated for number of segments and worst–case

conditions.

** A filament pre–warm resistor is recommended to reduce filament

thermal shock and increase the effective cold resistance of the

filament.

MOTOROLA CMOS LOGIC DATA

VSS

VZD*

VSS

FLUORESCENT READOUT

VDD

DIRECT

(LOW BRIGHTNESS)

FILAMENT

SUPPLY

VSS

VSS OR APPROPRIATE

VOLTAGE BELOW VSS.

(Caution: Absolute maximum

working voltage = 18.0 V)

MC14547B

5

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