DS3245 Quad MOS Clock Driver
February 1986
DS3245 Quad MOS Clock Driver
General Description
The DS3245 is a quad bipolar-to-MOS clock driver with TTL
compatible inputs It is designed to provide high output cur-
rent and voltage capabilities necessary for optimum driving
of high capacitance N-channel MOS memory systems
Only 2 supplies 5 V
DC
and 12 V
DC
are required without
compromising the usual high V
OH
specification obtained by
circuits using a third supply
The device features 2 common enable inputs a refresh in-
put 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
Y
Y
Y
Y
Y
Y
Y
TTL compatible inputs
Operates from 2 standard supplies 5 V
DC
12 V
DC
Internal bootstrap circuit eliminates need for external
PNP鈥檚
PNP inputs minimize loading
High voltage current outputs
Input and output clamping diodes
Control logic optimized for use with MOS memory sys-
tems
Pin and function equivalent to Intel 3245
Logic and Connection Diagrams
Dual-In-Line Package
TL F 5873 鈥?2
Top View
Order Number DS3245J or DS3245N
See NS Package Number J16A or N16A
TL F 5873 鈥?1
C
1995 National Semiconductor Corporation
TL F 5873
RRD-B30M115 Printed in U S A
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