DP8224 Datasheet | National Semiconductor

Description The DP8224 is a clock generator driver contained in a standard 16-pin dual-in-line package The chip which is fabricated using Schottky Bipolar technology generates clocks and timing for the 8080A microputer family Included in the DP8224 is an oscillator circuit that is controlled by an external crystal which is selected by the designer to meet a variety of system speed requirements Also included in the chip are circuits that provide a status strobe for the DP8228 or DP8238 system controllers power-on reset for the 8080A microprocessor and synchronization of the READY input to the 8080A Features Crystal-controlled oscillator for stable system operation Single chip clock generator and driver for 8080A microprocessor Provides status strobe for DP8228 or DP8238 system controllers Provides power-on reset for 8080A microprocessor Synchronizes READY input to 8080A microprocessor Provides oscillator output for synchronization of external circuits Reduces system ponent count 8080A Microputer Family Block Diagram TL F 8752 - 1 C1995 National Semiconductor Corporation TL F 8752 RRD-B30M105 Printed in U S A Absolute Maximum Ratings (Note 2) If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage VCC VDD 7V 15V b 1V to a 5 5V b 65 C to a 150 C 1509 m W 1476 m W 260 C Operating Conditions Min Supply Voltage VCC VDD Temperature (TA) 4 75 11 4 0 Max 5 25 12 6 a 70 Units V V C Input Voltage Storage Temperature Range Maximum Power Dissipation at 25 C Cavity Package Molded Package Lead Temperature (Soldering 4 seconds) Derate cavity package 10 1 m W C above 25 C derate molded package 11 8 m W C above 25 C Electrical Characteristics (Note 3) Symbol IF IR VC VIL VIH Parameter Input Current Loading Input Leakage Current Input Forward Clamp Voltage Input ‘‘Low’’ Voltage Input ‘‘High’’ Voltage Conditions VF e 0 45V VR e 5 25V IC e b5 m A...