AN-E-1305 Driver IC for Vacuum Fluorescent Displays - FUTABA America - #1

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AN-E-1305 Driver IC for Vacuum Fluorescent Displays - FUTABA America
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AN-E-1305 Driver IC for Vacuum Fluorescent Displays - FUTABA America
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AN-E-1305 Driver IC for Vacuum Fluorescent Displays - FUTABA America


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APPLICATION NOTE «H»
VACUUM FLUORESCENT DISPLAY
[UW Dg HÜ HD UM«™ DSM
Vacuum Fluorescent Displays (V.F.D.} can be driven directly by 4 ~ 8 bitC.P.U. (micro-computer), comprising p-channel open drain type MOS high breakdown voltage output stages. However, sometimes it is necessary to use driver circuits as the interface between V.F.D. and Tri­or CMOS level input signal. Such driver circuits can be composed of discrete semiconductor de­vices, but it is more convenient to use several bipolar or CMOS type driver Integrated Circuits which contains 6~8 circuits per package of 16™"18 pin DIP. Reference Table I for the various driver IC's available on the market. Shown below are examples of typical drive circuits and input/output waveforms.
Examples of Typical Drive Circuits and Input/Output Waveforms
(1) ! Negative power supply use
(2) Positive power supply use
a. Internal pulldown resistor type
a. Internal pulldown resistor type
Vdisp
GND,
GNO
1/S MSL915RS 1/8MSL916AS -VOiSP 1/8 MSL919RS 1/8 HA16619P
(V CUSPID
GNDo
VÏGND
1/8 MSL912RS 1/8 HA16617P
b. Open drain type
b. Open emitter type
GND
Vdisp
GND J~\_ ■ -5V
GND—I
-vdisp
GNO
1/7 TC5066BP
-VDISP |V DISPAIVI
GND
V^GND
1/8 MSL916RS

pageCatalog pdf di En 2012-05-20-19