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Description:

The NTE2024 is a monolithic integrated circuit intended for 2–digit display such as “numbers” for tV and “CB” channel selection, and other 0–99 numerical or counting for consumer or industrial indicator applications. It consists of two independent BCD–to–7 segment decoder/drivers. Two sets of BCD inputs are buffered with p–n–p differential amplifier stages internally referenced to 1.7V. Each of the eight input terminals draws less than 15μA and is provided with an internal protection circuit.

Decoding is accomplished with I2L ROM’s. The fourteen output terminals are buffered with Darlington pairs driving common–emitter output transistors. Each output is capable of sinking 25mA for an LED common–anode display device. The supply–voltage range (VCC) is intended to be 4.5V to 6V. The output voltage (VO) must not exceed 12V, which provides for a wide range of common–anode voltage sources.

Features:

? Separate BCD inputs and segment outputs for each digit

? Input loading less than 15μA

? I2L logic with buffered inputs and outputs

? Internal input overrange protection circuit

? 5V supply operation

? Internal biasing circuits

? Output drive capability of 25mA per segment

? Open collector outputs drive indicators directly