MC14511B
CONNECTIONS TO VARIOUS DISPLAY READOUTS
LIGHT EMITTING DIODE (LED) READOUT
V
DD
V
DD
COMMON
CATHODE LED
COMMON
ANODE LED
≈
1.7 V
≈
1.7 V
V
SS
V
SS
INCANDESCENT READOUT
V
DD
V
DD
FLUORESCENT READOUT
V
DD
**
DIRECT
(LOW BRIGHTNESS)
FILAMENT
SUPPLY
V
SS
V
SS
V
SS
OR APPROPRIATE
VOLTAGE BELOW V
SS
.
(CAUTION: Maximum working voltage = 18.0 V)
GAS DISCHARGE READOUT
APPROPRIATE
VOLTAGE
LIQUID CRYSTAL (LCD) READOUT
EXCITATION
(SQUARE WAVE,
V
SS
TO V
DD
)
V
DD
V
DD
1/4 OF MC14070B
V
SS
** A filament pre–warm resistor is recommended to reduce filament
thermal shock and increase the effective cold resistance of the
filament.
V
SS
Direct dc drive of LCD’s not recommended for life of
LCD readouts.
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