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E2C0032-27-Y2 Semiconductor
Semiconductor MSC7166
16-Bit Grid Driver with 4 to 16-Decoder
This version: Nov. 1997 MSC7166 Previous version: Jul. 1996
GENERAL DESCRIPTION
The MSC7166 is a driver IC designed to directly drive the grids of a vacuum fluorescent display tube. Since this IC has a built-in 4 to 16-line decoder and 16 output circuits, a signal device of MSC7166 can replace a set of the following three: two devices of either MSL912 or MSL918 and one device of either MSM4514 or MSM74HC4514. Setting the DUTY pin to the "L" level makes all driver outputs go "L". Blanking can be set using this function.
FEATURES
* Logic supply voltage : 5V * Driver supply voltage : 65V * Driver output current IOH : -40 mA IOL : 1 mA * Can be directly connected to VF display tube without pull-down resistor * Built-in 4- to 16-line decoder * Brightness can be adjusted by DUTY pin * Package 24-pin plastic SOP (SOP24-P-430-1.27-K) (Product name: MSC7166GS-K)
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MSC7166
BLOCK DIAGRAM
V DISP(+) V DD S1 S2 S3 SEL0 S4 S5 SEL1 SEL2 4 to 16 DECODER SEL3 S10 S11 S12 S13 S14 S15 S16 DUTY V SS S8 S9 S6 S7 GRID 1 GRID 2 GRID 3 GRID 4 GRID 5 GRID 6 GRID 7 GRID 8 GRID 9 GRID10 GRID11 GRID12 GRID13 GRID14 GRID15 GRID16
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INPUT AND OUTPUT CONFIGURATION
Schematic Diagram of Logic Input Circuit
VDD
VDD
Input
VSS
VSS
VSS
Schematic Diagram of Driver Output Citcuit
VDISP(+) VDISP(+)
Output
VSS
VSS
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MSC7166
PIN CONFIGURATION (TOP VIEW)
GRID 1 GRID 2 GRID 3 GRID 4 GRID 5 GRID 6 GRID 7 GRID 8 GRID 9 GRID10 GRID11 GRID12

1 2 3 4 5 6 7 8 9 10 11 12
24 23 22 21 20 19 18 17 16 15 14 13
VSS SEL 0 SEL 1 SEL 2 SEL 3 DUTY VDD VDISP(+) GRID 13 GRID 14 GRID 15 GRID 16
24-pin Plastic SOP
PIN DESCRIPTIONS
Symbol SEL0-3 Type I 4- to 16-line decoder input pins. The input 4-bit binary signals are converted into hexadecimal signals, then output through driver output pins. DUTY I Duty control signal input pin. Setting this pin to "L" makes all driver outputs go "L", so this pin can be used for brightness control. GRID1-16 O High withstand voltage driver output pins for driving fluorescent display tube. These pins can directly be connected to the grid of fluorescent display tude without pull-down resistor. VDISP(+) VDD VSS -- -- -- Power supply pin for the fluorescent display tube driver circuit. Logic power supply pin. Ground pin. Description
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ABSOLUTE MAXIMUM RATINGS
Parameter Logic Supply Voltage Driver Supply Voltage Input Voltage Power Dissipation Thermal Resistance of Package Storage Temperature Symbol VDD VDISP(+) VIN PD Rj-a TSTG Condition Applied to logic supply pin Applied to driver supply pin Applied to all input pins Ta<25C = -- -- Rating -0.3 to +6.5 -0.3 to +70 -0.3 to VDD+0.3 790 158 -55 to +150 *1 *1,2 *1 Unit V V V mW *3 C/W C
*1 The maximum supply voltage for VSS. *2 Permanent damage to the device may be caused if the voltage is supplied over the the absolute maximum rating value. *3 Thermal resistance of the package (between junction and atmosphere). The junction temperature (Tj) given by the equation indicated below should not exceed 150C. Tj=P Rj-a + Ta (P: maximum power consumption of IC)
RECOMMENDED OPERATING CONDITIONS
Parameter Logic Supply Voltage Driver Supply Voltage High Level Input Voltage Low Level Input Voltage High Level Output Current Low Level Output Current Operating Temperature Input Pulse Rise Time Input Pulse Fall Time Symbol VDD VDISP(+) VIH VIL IOH IOL Top tr tf Condition Applied to logic supply pin Applied to driver supply pin Applied to all input pins Applied to all input pins Applied to all driver output pins Applied to all driver output pins -- Applied to all input pins Applied to all input pins Min. 4.5 8 3.1 -- -- -- -40 -- -- Max. 5.5 65 -- 1.7 -40 1.0 85 1.0 1.0 Unit V V V V mA mA C ms ms
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ELECTRICAL CHARACTERISTICS
DC Characteristics
(VDD=4.5 to 5.5V,VDISP(+)=8 to 65V,Ta=-40 to +85C) Parameter Logic Supply Current Driver Supply Current High Level Input Current Low Level Input Current High Level Output Voltage Low Level Output Voltage Symbol IDD1 IDD2 IDISP1 IDISP2 IIH IIL VOH VOL Condition No load, 1 output H No load, DUTY=L No load, 1 output H No load, DUTY=L -- -- IOH=-40mA IOL=1mA Min. -- -- -- -- -- -- VDISP(+) -4 -- Typ. -- -- -- -- -- -- -- -- Max. 4.8 5.0 0.3 1.0 1 1 -- 2.5 Unit mA mA mA mA mA mA V V
AC Characteristics
(VDD=4.5 to 5.5V,VDISP(+)=8 to 65V,Ta=-40 to +85C) Parameter Delay Time L to H Transient Time L to H Delay Time H to L Transient Time H to L Symbol tDLH tTLH tDHL tTHL Condition CL=10pF, See figure below CL=10pF, See figure below CL=10pF, See figure below CL=10pF, See figure below Min. -- -- -- -- Typ. 0.3 2.0 0.3 2.0 Max. 1.0 4.0 1.0 4.0 Unit ms ms ms ms
tr 90% 50% DUTY SELn 10% tDLH 90% GRIDn 10% tTLH 90% 50%
tf
10% tDHL 90% 10% tTHL
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MSC7166
FUNCTION DESCRIPTION
Functional Table
SEL 0 X L H L H L H L H H L H L H L H L H 1 X L L H H L L H H L L H H L L H H 2 X L L L L H H H H L L L L H H H H 3 X L L L L L L L L H H H H H H H H 1 L H L L L L L L L L L L L L L L L 2 L L H L L L L L L L L L L L L L L 3 L L L H L L L L L L L L L L L L L 4 L L L L H L L L L L L L L L L L L 5 L L L L L H L L L L L L L L L L L 6 L L L L L L H L L L L L L L L L L 7 L L L L L L L H L L L L L L L L L GRID 8 L L L L L L L L H L L L L L L L L 9 L L L L L L L L L H L L L L L L L 10 11 12 13 14 15 16 L L L L L L L L L L H L L L L L L L L L L L L L L L L L H L L L L L L L L L L L L L L L L L H L L L L L L L L L L L L L L L L L H L L L L L L L L L L L L L L L L L H L L L L L L L L L L L L L L L L L H L L L L L L L L L L L L L L L L L H
DUTY L
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PACKAGE DIMENSIONS
(Unit : mm)
SOP24-P-430-1.27-K
Mirror finish
Package material Lead frame material Pin treatment Solder plate thickness Package weight (g)
Epoxy resin 42 alloy Solder plating 5 mm or more 0.58 TYP.
Notes for Mounting the Surface Mount Type Package The SOP, QFP, TSOP, SOJ, QFJ (PLCC), SHP and BGA are surface mount type packages, which are very susceptible to heat in reflow mounting and humidity absorbed in storage. Therefore, before you perform reflow mounting, contact Oki's responsible sales person for the product name, package name, pin number, package code and desired mounting conditions (reflow method, temperature and times).
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