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ITT - Index of

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I mm<br />

_ . .L.L _______ O_C_T_A<br />

SEMICONDUCTORS<br />

<strong>ITT</strong>509<br />

.... L_S_E_G_M_E_N_T_D_R_'_V_ER_ ..<br />

OCTAL SEGMENT<br />

DRIVER'<br />

PACKAGE 18 PIN DUAL-IN-LINE<br />

o B Segment Drivers<br />

• MOS to LED Interface<br />

o 500uA Input Current<br />

o Constant Current Source<br />

• Output Current Matched to 15%<br />

. aUTA<br />

v- I<br />

The ITI509 is a monolithic integrated circuit<br />

designed to interface MOS circuits and light<br />

emitting diode displays.<br />

The ITI509 was designed for use with<br />

serially addressed multi-digit displays. The<br />

time multiplexed system using a segment<br />

address digit scan technique minimizes the<br />

number <strong>of</strong> drivers required.<br />

Pin Configuration<br />

The <strong>ITT</strong>509 when used with, the ITI50.B Oc::tal<br />

Digit Driver requires only two IC's to drive<br />

eight digits, seven segments and one<br />

decimal.<br />

Schematic Diagram<br />

V+<br />

Vin<br />

20K<br />

Maximum ratings (TA = 25°C)<br />

V+ .............................. 10. volts<br />

Vin .................................. V+<br />

160n.<br />

1-------~~--oVout<br />

8-16

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