NTE2024 Datasheet, PDF (1/2 Pages) NTE Electronics – Integrated Circuit 2-Digit BCD-to-7-Segment Decoder/Driver

NTE2024
Integrated Circuit
2–Digit BCD–to–7–Segment Decoder/Driver
Features:
D Separate BCD inputs and segment outputs for each digit
D Input loading less than 15µA
D I²L logic with buffered inputs and outputs
D Internal input overrange protection circuit
D 5V supply operation
D Internal biasing circuits
D Output drive capability of 25mA per segment
D Open collector outputs drive indicators directly
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 (V_CC) is intended to be 4.5V to 6V. The
output voltage (V_O) must not exceed 12V, which provides for a wide range of common–anode voltage
sources.
Absolute Maximum Ratings:
Supply Voltage, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V
Input–Voltage (Min/Max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3V_CC V
Input Current (Protection Circuit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±10mA
Output Voltage, V_O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V
Output Segment Current, I_Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mA
Power Dissipation (T_A ≤ +70°C), P_D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400mW
Derate Linearly Above +70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.7mW/°C
Operating Ambient temperature Range, T_opr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to 70°C
StorageTemperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C
Lead Temperature (During Soldering, 1/16” ± 1/32” from case, 10sec max), T_L . . . . . . . . . . +265°C