DS3245 Datasheet | National Semiconductor

Description The DS3245 is a quad bipolar-to-MOS clock driver with TTL patible inputs It is designed to provide high output current and voltage capabilities necessary for optimum driving of high capacitance N-channel MOS memory systems Only 2 supplies 5 VDC and 12 VDC are required without promising the usual high VOH specification obtained by circuits using a third supply The device features 2 mon enable inputs a refresh input and a clock control input for simplified system designs The circuit was designed for driving highly capacitive loads at high speeds and uses Schottky-clamped transistors PNP transistors are used on all inputs thereby minimizing input loading Features Y TTL patible inputs Y Operates from 2 standard supplies 5 VDC 12 VDC Y Internal bootstrap circuit eliminates need for external PNP’s Y PNP inputs minimize loading Y High voltage current outputs Y Input and output clamping diodes Y Control logic optimized for use with MOS memory sys- tems Y Pin and function equivalent to Intel 3245 Logic and Connection Diagrams Dual-In-Line Package Obsolete TL F 5873 - 1 Top View TL F 5873 - 2 Order Number DS3245J or DS3245N See NS Package Number J16A or N16A C1995 National Semiconductor Corporation TL F 5873 RRD-B30M115 Printed in U S A Obsolete Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Temperature Under Bias b10 C to a85 C Storage Temperature b65 C to a150 C Supply Voltage VCC Supply Voltage VDD All Input Voltages Outputs for Clock Driver Maximum Power Dissipation Cavity Package Molded Package at 25 C b0 5V to a7V b0 5V to a14V b1 0V to VDD b1 0V to VDD a 1V 1509 m W 1476 m W Derate cavity package 10 1 m W C above 25 C derate molded package 11 8 m W C above 25 C Operating Conditions Min Max Units Supply Voltage VCC 4 75 5 25 Supply Voltage VDD 11 4 12 6 Operating Temperature...