M5480

M5480 LED DISPLAY DRIVER . . . . . . . . . . . 3 1/2 DIGIT LED DRIVER (23 segments) CURRENT GENERATOR OUTPUTS (no resistors required) CONTINUOUS BRIGHTNESS CONTROL SERIAL DATA INPUT NO LOAD SIGNAL REQUIRED WIDE SUPPLY VOLTAGE OPERATION TTL COMPATIBILITY Applications examples MICROPROCESSOR DISPLAYS INDUSTRIAL CONTROL INDICATION RELAY DRIVER INSTRUMENTATION READOUTS DESCRIPTION DIP-28 (Plastic Package) ORDER CODE : M5480B7 The M5480 is a monolithic MOS integrated circuit produced with a N-channel silicon gate technology. It utilizes the M5451 die packaged in a 28-pin plas-tic package making it ideal for a 3 1/2 digit dispaly. A single pin controls the LED dispaly brightness by setting a reference current through a variable resistor connected either to VDD or to a separate supply of 13.2V maximum. The M5480 is a pin-to-pin replacement of the NS MM 5480. PIN CONNECTIONS V SS OUTPUT BIT 11 OUTPUT BIT 10 OUTPUT BIT 9 OUTPUT BIT 8 OUTPUT BIT 7 OUTPUT BIT 6 OUTPUT BIT 5 OUTPUT BIT 4 OUTPUT BIT 3 OUTPUT BIT 2 OUTPUT BIT 1 BRIGHTNESS CONTROL V DD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 OUTPUT BIT 12 OUTPUT BIT 13 OUTPUT BIT 14 OUTPUT BIT 15 OUTPUT BIT 16 OUTPUT BIT 17 OUTPUT BIT 18 OUTPUT BIT 19 OUTPUT BIT 20 OUTPUT BIT 21 OUTPUT BIT 22 OUTPUT BIT 23 5480-01.EPS DATA IN CLOCK IN May 1993 1/6 M5480 BLOCK DIAGRAM (Figure 1) V DD BRITGHTNESS CONTROL OUTPUT BIT 23 OUTPUT BIT 1 14 13 1nF 17 12 35 OUTPUT BUFERS LOAD 35 LATCHES SERIAL DATA 16...