DS7889

DS8887 NSC | Alldatasheet

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S E 7A National Display Controllers/ Drivers S Semiconductor § | DS8887 8-Digit High Voltage Anode Driver Q| (Active-High Inputs) g DS7889/DS8889 8-Segment High Voltage Cathode Driver 8 (Active-High Inputs) o DS7897A/DS8897A 8-Digit High Voltage Anode Driver ®| (Active-Low Inputs) © | General Description ld The DS8887 and OS7897A/DS8897A are de- output sink current, which can be adjusted by signed to drive the individual anodes of a 7-seg- external program resistor, Rp. The program cur- ment (cathodes) high-voltage gas discharge panel rent is half that of output “ON” current. In the ao in a time multiplexed fashion. “OFF” state the outputs can tolerate more than. BOV. The ratio of “ON” output currents is within a When driven with appropriate input signals, the ‘10%. Inputs have negative clamp diodes. Active driver will switch voltage and impedance levels at high input logic. The main application of the the anode. This will allow or prevent ionization device is to interface MOS circuits to high-voltage of gas around selected cathode in order to form a displays. Unused outputs should have correspond: numeric display. This main application is to inter- ing inputs connected to Vege face with MOS outputs (fully-decoded) and the anodes of a gas-discharge panel, since the devices Features can source up to 16 mA at a low impedance and DS7889/DS8889 is capable of driving 8 segments ® High breakdown voltages of a high-voltage display tube with a constant = Low power dissipation Connection Diagrams (duat-in-tine packages) s8se7, 0s7897/088007 os7seorosese0 SS eee . Tears ——— Order Number DS7897AJ, DS8887J, Order Number DS7889J, DS8889J DS8897AJ or DS8897AN or DS8889N ‘See NS Package J18A or N18A. See NS Package J18A or N18A 5-160

Absolute Maximum Ratings (note 1) Operating Conditions MIN. MAX UNITS ‘Supply Voltage (Vcc - Vgias) (Note 2) ‘Supply Voltage (Vcc — Bias) 1088887, OS7897A, DSBB97A ~6ov DS8887, DS7EO7A/OS8BS7A ~40 -60 v {3 Input Voltage: Temperature (Ta) - DS8887, DS7897A/DS8897A ~20v 087889, 0S7897A 5 +125 °C o DS7899/0S8889 (Note 3) 38V (0S8897" DS8889, DS8897A ° +70 “ce a Output Voltage ‘$8887, DS7897A/DS8897A Vv a $7889 /0S8889 asv iJ Storage Temperature Range 65°C to +150°C (0S7889/DS8889 Maximum Power Dissipation” at 25°C Cavity Package > 4436 mW Molded Package 1563 mW (DS8887, DS7897A/DS8897A Maximum Power Dissipation® at - 25°C *Derate cavity package 11.49 mW/°C above 25°C; derste molded | TJ Cavity Package 1496 mW package 12.5 mW/°C above 25°C. (7) Molded Package 1714 mW t Derate cavity package 11.97 mW/°C above 25°C; derate molded | J Lead Temperature (Soldering, 10 seconds) 300°C package 13.71 mW/°C above 25°C. @ Electrical Characteristics (notes 2, 3 and 4) > PARAMETER, [conn irrons— Tain ve Tmax [units ‘DSGHBT_ DS8B97A, OS7B97A Vin Logical“ Input Vonage | _Vour = -14V. tour = -16 mA, DS8G87 [20 | | | Vi Logical “0” Input votuee | _Vour = -60V, lou = 100A, 058887 re ee Tn Lopes! "V"tnpat Current | Vour=-14V.lour=—16ma, oseaa7a,os7ea7a | -s00 | | | _HA he Tosca "0 Input Curent | Vour=-60V, tour= 100A, osea07A,osvav7a_| | | -10_~| HA W Tnput Current [vy Tas ss0 an osess7 [Vin=-50v |S 28a 9S7897A, DSBBQ7A, Vin = ~12V [-oa5 [| rs Toma Vour ore _Output “OFF” Voltage Tour = =TO0HA, I = OHA [wo [a | |v Tour ore Output “OFF” Current Vour 2850, ty = OuA Lf 00 [| 0 [| oa Vour ow Output “ON” Voitage Vin = -2.0V, DS8887 [io Tara Tv Nin = -B00WA, DsBBO7A,OSTeB7A| [| ie | loras Veias Current 1 toma, Wn a=hovpsaae7woes) [| 22 [40 [ma eer gov | i= 200HA, DS8897A, 0578978 A pias (One Driver Only) 0S7889/DS8889 he Copia O"trputGurere | tour 8OAVours7v | TT 70 fo is Logeal "1" Input Currant | Tour = 14 mA Iw = 85044, Vour = SOV [eo ||. |» vi Input Clamp Voltege [iwstomatane Toes [coms | Teor Output Leakage Guvent | Vou = 78V.-0.1 MA Sim S700 [. [oom [50 | oa Tenos Prog. Input Voltage [ston Cte Po Pv lp = 85048 [so as Tv Yo Logical “0” Output Current 057889 [210 [300 | 300 [ua [osseeo [240 [300 | 360 [ua Vour =80V. [1 pogua SS OWA S tin Sle | [“pssaso |e] a00 [920 | ua he = 850ua [057889 [vas [7 [198 [ma ie TBA [esssco sa [or [tar [na ‘le Output Current Ratio Tour © Ref= 1.7 mA, Vour = 50V [o [| 1 | | 5-161

tS | Switching Characteristics 1, = 25°c uniess otherwise specified. Ey PARAMETER CONDITIONS [ww [te | max | UNITS © | osssa7 D | toy Propagation Delay from Input (See ac Test Circuit and Switching Time bs a to Output “ON” Waveforms) taise Propagation Delay from Input (See ac Test Circuit and Switching Time us to Output “ON” Waveforms) = DS7889/0S8889 o s go Propagation Delay to a Logical Rp = 6.0k to G.0V, Rout = 1.0k to 6.0V 37 ns | * a “0” from Input to Output | test Propagation Delay to a Logical Input Ramp Rate < 15 ns, Freq = 1.0 MHz 200 ns s "1" from Input to Output dc = 50%, Amplitude = 6.0V Fy Note 1: “Absolute Maximum Ratings" are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices should be operated at these limits. The table of Electrical Characteristics” provides conditions for actual device operation, OQ | Note 2: Ait voltage shown for 058887, 0S7897A/DS8B97A W.A.T. Vcc = OV. All currents into device pins shown as positive, out of device pint as negative. All values shown as max oF min on absolute basis. Note 3: Ail voltages for DS7889/DS8880 with respect to Vee = OV Note 4: Unless otherwise specified min/max limits apply across the -55°C to +125°C temperature range for the DS7889 and DS7897A, and across the 0°C to +70°C range for the DS8887, DS8B89 and DS8897A. All typicals are given for Ta = 25°C. Note 5: Supply currents specified for any one input = ~1.0V. All other inputs = ~6.V and selected output having 16 mA load Typical Application Typical Performance Characteristics wo Ly a ? ‘ Pes ot | me eo Aaa Ver [1] waxromrt LA I. . - fae Z Cet of | fy ow PL sti 2} ape ad oan sa a Forse pi Stents mh, 3 Z SERA [al ctmtbel_] sites [af St HEA or Tye mE me = : wnores We A wb as cooscrrons [| Oo ie el A im i Eye Fj tI cm CECCCCECEET Te) Ye vows ‘2 10 88-60 40 200 ie owt. Atepeel otal made nn oma oe SOU SOS Seas aet AC Test Circuit and Switching Time Waveforms 9 woe oy vee ie te aw 7S aco Som our i I oa. re ay av tose 5-162

iw] Logic Diagrams 8 os8887 . Me S7889/0S8889 N ee our f= ted]) ae pe 8 vet © 1 J ' 1 ' =) ‘| [one ar esewr orivens sown | ' 1 | 1 i L___-TaIT SE ---5 3 DS7897A/DS8897A s | area | oO | T° N $i || > wat © | \\ | Loo 5-163