E2C0032-27-Y2 ¡ Semiconductor MSC7166 ¡ Semiconductor This version: Nov. 1997 MSC7166 Previous version: Jul. 1996 16-Bit Grid Driver with 4 to 16-Decoder 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) 1/8 ¡ Semiconductor MSC7166 BLOCK DIAGRAM V DISP(+) V DD S 1 S 2 S 3 S 4 SEL0 S 5 SEL1 S 6 S 7 SEL2 4 to 16 DECODER GRID 1 GRID 2 GRID 3 GRID 4 GRID 5 GRID 6 GRID 7 S 8 GRID 8 S 9 GRID 9 SEL3 S10 GRID10 S11 GRID11 S12 GRID12 S13 S14 GRID13 GRID14 S15 GRID15 S16 GRID16 DUTY V SS 2/8 ¡ Semiconductor MSC7166 INPUT AND OUTPUT CONFIGURATION Schematic Diagram of Logic Input Circuit VDD VDD VSS VSS Input VSS Schematic Diagram of Driver Output Citcuit VDISP(+) VDISP(+) Output VSS VSS 3/8 ¡ Semiconductor MSC7166 PIN CONFIGURATION (TOP VIEW) GRID 1 1 24 VSS GRID 2 2 23 SEL 0 GRID 3 3 22 GRID 4 4 21 SEL 1 SEL 2 GRID 5 5 6 20 SEL 3 GRID 6 19 DUTY GRID 7 7 18 VDD GRID 8 8 17 16 VDISP(+) 15 GRID 14 14 13 GRID 15 GRID 9 9 GRID10 GRID11 10 11 GRID12 12 GRID 13 GRID 16 24-pin Plastic SOP PIN DESCRIPTIONS Symbol SEL0-3 Type I Description 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(+) — Power supply pin for the fluorescent display tube driver circuit. VDD — Logic power supply pin. VSS — Ground pin. 4/8 ¡ Semiconductor MSC7166 ABSOLUTE MAXIMUM RATINGS Parameter Symbol Condition Rating Unit Logic Supply Voltage VDD Applied to logic supply pin –0.3 to +6.5 *1 V Driver Supply Voltage VDISP(+) Applied to driver supply pin –0.3 to +70 V Input Voltage VIN –0.3 to VDD+0.3 Power Dissipation PD Applied to all input pins Ta<=25°C *1,2 *1 Thermal Resistance of Package Rj-a Storage Temperature TSTG V 790 mW — 158 *3 °C/W — –55 to +150 °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 150°C. Tj=P ¥ Rj-a + Ta (P: maximum power consumption of IC) RECOMMENDED OPERATING CONDITIONS Parameter Symbol Condition Min. Max. Unit Logic Supply Voltage VDD Applied to logic supply pin 4.5 5.5 V Driver Supply Voltage VDISP(+) Applied to driver supply pin 8 65 V High Level Input Voltage VIH Applied to all input pins 3.1 — V Low Level Input Voltage VIL Applied to all input pins — 1.7 V High Level Output Current IOH Applied to all driver output pins — –40 mA Low Level Output Current IOL Applied to all driver output pins — 1.0 mA Operating Temperature Top — –40 85 °C Input Pulse Rise Time tr Applied to all input pins — 1.0 Input Pulse Fall Time tf Applied to all input pins — 1.0 ms ms 5/8 ¡ Semiconductor MSC7166 ELECTRICAL CHARACTERISTICS DC Characteristics (VDD=4.5 to 5.5V,VDISP(+)=8 to 65V,Ta=–40 to +85°C) Parameter Symbol Condition Min. Typ. Max. Unit Logic Supply Current IDD1 No load, 1 output H — — 4.8 mA IDD2 No load, DUTY=L — — 5.0 mA Driver Supply Current IDISP1 No load, 1 output H — — 0.3 mA IDISP2 No load, DUTY=L — — 1.0 mA IIH — — — ±1 mA High Level Input Current IIL — — — ±1 mA High Level Output Voltage VOH IOH=–40mA — — V Low Level Output Voltage VOL IOL=1mA VDISP(+) –4 — — 2.5 V Low Level Input Current AC Characteristics (VDD=4.5 to 5.5V,VDISP(+)=8 to 65V,Ta=–40 to +85°C) Parameter Symbol Condition Min. Typ. Max. Unit tDLH CL=10pF, See figure below — 0.3 1.0 ms Transient Time L to H tTLH CL=10pF, See figure below — 2.0 4.0 ms Delay Time H to L tDHL CL=10pF, See figure below — 0.3 1.0 ms Transient Time H to L tTHL CL=10pF, See figure below — 2.0 4.0 ms Delay Time L to H tr tf 90% 50% DUTY SELn 90% 50% 10% 10% tDHL tDLH 90% GRIDn 90% 10% 10% tTLH tTHL 6/8 ¡ Semiconductor MSC7166 FUNCTION DESCRIPTION Functional Table DUTY L H SEL GRID 0 1 2 3 1 2 3 4 5 6 7 8 9 X X X X L L L L L L L L L 10 11 12 13 14 15 16 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 H L L L L H L L L L L L L L L L L L L L L H L L L L H L L L L L L L L L L L L L H H L L L L L H L L L L L L L L L L L L L L H L L L L L H L L L L L L L L L L L H L H L L L L L L H L L L L L L L L L L L H H L L L L L L L H L L L L L L L L L H H H L L L L L L L L H L L L L L L L L L L L H L L L L L L L L H L L L L L L L H L L H L L L L L L L L L H L L L L L L L H L H L L L L L L L L L L H L L L L L H H L H L L L L L L L L L L L H L L L L L L H H L L L L L L L L L L L L H L L L H L H H L L L L L L L L L L H L L H L L L H L L L H L L L L L L L L L L L L H L H H H H L L L L L L L L L L L L L L L H 7/8 ¡ Semiconductor MSC7166 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). 8/8