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4547 / 14547 / MC14547B / MC14547 / decoder/driver
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Please note: This spec sheet may cover several different parts.
The MC14547 BCD–to–seven segment decoder/driver is constructed with complementary MOS (CMOS) enhancement mode devices and NPN bipolar output drivers in a single monolithic structure. The circuit provides the functions of an 8421 BCD–to–seven segment decoder with high output drive capability. Blanking (BI), can be used to turn off or pulse modulate the brightness of the display. The MC14547 can drive seven–segment light–emitting diodes (LED), incandescent, fluorescent or gas discharge readouts either directly or indirectly.
Applications include instrument (e.g., counter, DVM, etc.) display driver, computer/calculator display driver, cockpit display driver, and various clock, watch, and timer uses.
High Current Sourcing Outputs (Up to 65 mA)
Low Logic Circuit Power Dissipation
Supply Voltage Range = + 3.0 V to + 18 V
Readout Blanking on All Illegal Combinations
Lamp Intensity Modulation Capability
Capable of Driving Two Low–Power TTL Loads, One Low–Power Schottky TTL Load or Two HTL Loads over the Rated Temperature Range
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