MOTOROLA CMOS LOGIC DATA

365

MC14511B

CONNECTIONS TO VARIOUS DISPLAY READOUTS

COMMON

CATHODE LED

≈ 1.7 V

VDD

VSS

VDD

COMMON

ANODE LED

VSS

≈ 1.7 V

LIGHT EMITTING DIODE (LED) READOUT

INCANDESCENT READOUT

FLUORESCENT READOUT

GAS DISCHARGE READOUT

LIQUID CRYSTAL (LCD) READOUT

VDD

VDD

**

VSS

VDD

VSS

FILAMENT

SUPPLY

DIRECT

(LOW BRIGHTNESS)

VSS OR APPROPRIATE

VOLTAGE BELOW VSS.

(CAUTION: Maximum working voltage = 18.0 V)

VDD

APPROPRIATE

VOLTAGE

VSS

VSS

VDD

EXCITATION

(SQUARE WAVE,

VSS TO VDD)

1/4 OF MC14070B

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

thermal shock and increase the effective cold resistance of the

filament.

Direct dc drive of LCD’s not recommended for life of

LCD readouts.