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| 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 15A 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 15A 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. Absolute Maximum Ratings: Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V Input-Voltage (Min/Max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3VCC V Input Current (Protection Circuit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA Output Voltage, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V Output Segment Current, IDisplay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mA Power Dissipation (TA +70C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400mW Derate Linearly Above +70C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.7mW/C Operating Ambient temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 70C StorageTemperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +150C Lead Temperature (During Soldering, 1/16" 1/32" from case, 10sec max), TL . . . . . . . . . . +265C Electrical Characterisitic: Parameter Input Voltage, High Input Voltage, Low Input Current, High Input Current, Low On-State Output Voltage Off-State Output Current Power Supply Drain Current Input Capacitance (VCC = 5V, V1 = GND, VDISP = 12V, and TA = +25C unless otherwise specified) Symbol VIH VIL IIH IIL VOL IOL ICC CI Pin Connection Diagram GND 1 A2 MSD BCD B 3 Inputs C 4 D5 a6 b7 c8 d9 e 10 f 11 g 12 24 23 22 21 20 A B C D a b c d e f Test Conditions Min 2.4 0 Typ 5.0 - - - - 5 17 5 Max VCC 0.6 15 - 1 50 25 - Unit V V A A V A mA [pF All BCD Inputs = 5V All BCD Inputs = 0V IO(Sink) = 25mA VCC = 6V - -10 - - - - LSD BCD Inputs MSD Segment Outputs 19 18 LSD Segment 17 Outputs 16 15 14 g 13 VCC 24 13 1 12 1.300 (33.02) Max .225 (5.73) Max .520 (13.2) .100 (2.54) 1.100 (27.94) .126 (3.22) Min .600 (15.24) |
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