DS75491 MOS-to-LED Quad Segment Driver DS75492 MOS-to-LED Hex Digit Driver General Description Features The DS75491 and DS75492 are interface circuits designed to be used in conjunction with MOS integrated circuits and common-cathode LEDs 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. Y Y Y Y Y 50 mA source or sink capability per driver (DS75491) 250 mA sink capability per driver (DS75492) MOS compatability (low input current) Low standby power High-gain Darlington circuits Schematic and Connection Diagrams DS75491 (each driver) DS75492 (each driver) TL/F/5830 – 1 TL/F/5830 – 2 DS75492 Dual-In-Line Package DS75491 Dual-In-Line Package TL/F/5830 – 3 Top View TL/F/5830 – 4 Top View Order Number DS75491N, DS75492M or DS75492N See NS Package Number M14A or N14A C1995 National Semiconductor Corporation TL/F/5830 RRD-B30M105/Printed in U. S. A. DS75491 MOS-to-LED Quad Segment Driver DS75492 MOS-to-LED Hex Digit Driver February 1995 Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. DS75491 DS75492 b 5V to VSS Input Voltage Range (Note 4) Collector Output Voltage (Note 5) 10V 10V Collector Output to Input Voltage 10V 10V Emitter to Ground Voltage (VI t 5V) 10V Emitter to Input Voltage 5V Voltage at VSS Terminal with Respect to any Other Device Terminal 10V 10V Collector Output Current Each Collector Output 50 mA 250 mA All Collector Outputs 200 mA 600 mA Continuous Total Dissipation DS75491 600 mW DS75492 600 mW Operating Temperature Range 0§ C to a 70§ C Storage Temperature Range Lead Temp. (Soldering, 10 sec) Maximum Power Dissipation at 25§ C Molded Package b 65§ C to a 150§ C 300§ C 300§ C 1207 mW* 1280 mW ² *Derate molded package 9.66 mW/§ C above 25§ C. ² Derate molded package 10.24 mW/§ C above 25§ C. Electrical Characteristics VSS e 10V (Notes 2 and 3) Symbol Parameter Conditions Min Typ Max Units DS75491 VCE ON IC OFF ‘‘ON’’ State Collector Emitter Voltage ‘‘OFF’’ State Collector Current Input e 8.5V through 1 kX, VE e 5V, IC e 50 mA VC e 10V, VE e 0V TA e 25§ C 0.9 TA e 0 –70§ C 1.2 V 1.5 V IIN e 40 mA 100 mA VIN e 0.7V 100 mA 3.3 mA II Input Current at Maximum Input Voltage VIN e 10V, VE e 0V, IC e 20 mA IE Emitter Reverse Current VIN e 0V, VE e 5V, IC e 0 mA ISS Current Into VSS Terminal 2.2 100 mA 1 mA DS75492 VOL IOH Low Level Output Voltage High Level Output Current II Input Current at Maximum Input Voltage ISS Current Into VSS Terminal Input e 6.5V through 1 kX, IOUT e 250 mA VOH e 10V TA e 25§ C 0.9 TA e 0 –70§ C 1.2 V 1.5 V IIN e 40 mA 200 mA VIN e 0.5V 200 mA VIN e 10V, IOL e 20 mA 2.2 3.3 mA 1 mA Max Units Switching Characteristics VSS e 7.5V, TA e 25§ C Symbol Parameter Conditions Min Typ tPLH Propagation Delay Time, Low-to-High Level Output (Collector) 100 ns tPHL Propagation Delay Time, High-to-Low Level Output (Collector) VIH e 4.5V, VE e 0V, RL e 200X, CL e 15 pF 20 ns VIH e 7.5V, RL e 39X, CL e 15 pF 300 ns 30 ns DS75491 DS75492 tPLH Propagation Delay Time, Low-to-High Level Output tPHL Propagation Delay Time, High-to-Low Level Output 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 devices should be operated at these limits. The table of ‘‘Electrical Characteristics’’ provides conditions for actual device operation. Note 2: Unless otherwise specified min/max limits apply across the 0§ C to a 70§ C temperature range for the DS75491 and DS75492. Note 3: All currents into device pins shown as positive, out of device pins as negative, all voltages referenced to ground unless otherwise noted. All values shown as max or min on absolute value basis. Note 4: The input is the only device terminal which may be negative with respect to ground. Note 5: Voltage values are with respect to network ground terminal unless otherwise noted. 2 AC Test Circuits and Switching Time Waveforms DS75491 DS75492 TL/F/5830 – 5 TL/F/5830 – 6 Note 1: The pulse generator has the following characteristics: ZOUT e 50X, PRR e 100 kHz, tW e 1 ms. Note 2: CL includes probe and jig capacitance. Physical Dimensions inches (millimeters) 14-Lead (0.150× Wide) Molded Small Outline Package, JEDEC Order Number DS75492M NS Package Number M14A 3 TL/F/5830 – 7 DS75491 MOS-to-LED Quad Segment Driver DS75492 MOS-to-LED Hex Digit Driver Physical Dimensions inches (millimeters) (Continued) Molded Dual-In-Line Package (N) Order Number DS75491N or DS75492N NS Package Number N14A LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 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