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SCF5744 Datasheet(PDF) 1 Page - Siemens Semiconductor Group |
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SCF5744 Datasheet(HTML) 1 Page - Siemens Semiconductor Group |
1 / 12 page 2–200 FEATURES • Four 0.270” (6.85 mm) 5 x 7 Dot Matrix Characters in Red, High Efficiency Red, High Efficiency Green • Optimum Display Surface Efficiency (display area to package ratio) • High Speed Data Input Rate: 5 MHz • ROMless Serial Input, Dot Addressable Display Ideal for User Defined Characters • Built-in Decoders, Multiplexers and LED Drivers • Readable from 6 Feet (1.8 meters) • Wide Viewing Angle, X Axis ±55°, Y Axis ±55° • Attributes – 140 Bit RAM for User Defined Characters – Eight Dimming Levels – Power Down Model (<250 µW) – Hardware/Software Clear Functions – Internal or External Clock DESCRIPTION The SCF574X is a four digit, dot addressable 5x7 dot matrix, serial input, alphanumeric Intelligent Display. The four digits are packaged in a rugged, high quality, optically transparent, plastic 22 pin DIP with 0.1” pin spacing. The on-board CMOS has a 140 bit RAM, one bit associated with one LED, each to generate User Defined Characters. In Power Down Mode, quiescent current is <50 µA. The SCF574X is designed for work with the serial port of most common microprocessors. Data is transferred into the display through the Serial Data Input (DATA), clocked by the Serial Data Clock (SDCLK), and enabled by the Load Input (LOAD). The Clock I/O (CLK I/O) and Clock Select (CLK SEL) pins offer the user the capability to supply a high speed external multiplex clock. This feature can minimize audio in-band interference for portable communication equipment or eliminate the visual sychronization effects found in high vibration environments such as avionic equipment. Package Dimensions in Inches (mm) SCF574X SIEMENS YYWW Z .270 (6.86) .157 –.007 (3.99 –.18) .325 (8.26) .175 (4.45) .790 –.010 (20.07 –.25) 1.300 max. (33.02) .145 –.015 (3.68 –.38) .100 –.015 (2.54 –.38) .276 max. (7.0) max. .160 –.020 (4.06) –.51) .018 X .012 (.46 X .30) (Leads 22 plcs.) .600 –.020 (15.25 –.51) Pin 1 Indicator Luminous Intensity Code EIA Date Code STANDARD RED SCF5740 HIGH EFFICIENCY RED SCF5742 HIGH EFFICIENCY GREEN SCF5744 0.270” 4-Character, 5x7 Dot Matrix Serial Input Dot Addressable Intelligent Display ™ |
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