NTE2027 Integrated Circuit Hex LED Digit Driver Description: The NTE2027 is an interface circuit in a 14–Lead DIP typ package designed to be used in conjunction with MOS integrated circuits and common cathode LED’s in serially addressed multi–digit displays. The number of drivers required for this time–multiplexed system is minimized as a result of the segment–address–and–digit–scan method of LED drive. Features: D Sink Capability Per Driver: 350mA D MOS Compatibility (Low Input Current) D Low Standby Power D High–Gain Darlington Circuits Absolute Maximum Ratings: (Note 1) Input Voltage Range (Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –5V to VSS Collector Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10V Collector Output to Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10V Voltage at VSS Pin (with Respect to Any Other Device Pin) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10V Collector Output Current Each Collector Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350mA All Collector Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600mA Continuous Total Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800mW Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +70°C Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C Lead Temperature (During Soldering, 10sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300°C Note 1. “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. Except for “Operating Temperature Range” they are not meant to imply that the device should be operated at these limits. The table of “Electrical Characteristics” provides conditions for actual device operation. Note 2. The input is the only device pin which may be negative with respect to GND. DC Electrical Characteristics: (VSS = 10V, TA = 0° to +70°C, Note 3, Note 4 unless otherwise specified) Parameter Symbol Low Level Output Voltage VOL High Level Output Current IOH Input Current at Max Input Voltage II Current into VSS Pin Test Conditions Min Typ Max Unit Input = 6.5V through 1kΩ, IOUT = 350mA, TA = +25°C – 1.2 1.4 V Input = 6.5V through 1kΩ, IOUT = 350mA – – 1.6 V VOH = 10V, IIN = 40µA – – 200 µA VOH = 10V, VIN = 0.5V – – 200 µA VIN = 10V, IOL = 20mA – 2.2 3.3 mA – – 1.0 mA ISS Note 3. Unless otherwise specified, Min/Max limits apply across the 0° to +70°C temperature range. Note 4. All currents into device pins shown as positive, out of device as negative, all voltages referenced to GND unless otherwise specified. All values shown as mmax or Min on absolute value basis. AC Switching Characteristics (VSS = 7.5V, TA = +25°C unless otherwise specified) Parameter Symbol Propagation Delay Time Low–to–High Level Output tPLH High–to–Low Level Output tPHL Test Conditions VIH = 7.5V, RL = 39Ω, CL = 15pF Pin Connection Diagram 1Y 1 14 1A 2Y 2 13 6Y 2A 3 12 6A 11 VSS GND 4 3A 5 10 5A 3Y 6 9 5Y 4Y 7 8 4A 14 8 1 7 .785 (19.95) Max .300 (7.62) .200 (5.08) Max .100 (2.45) .600 (15.24) .099 (2.5) Min Min Typ Max Unit – 300 – ns – 30 – ns