WWW.Microsemi .COM 1N6509 1N6509 Isolated Diode Array with SCOTTSDALE DIVISION HiRel MQ, MX, MV, and MSP Screening Options DESCRIPTION APPEARANCE These low capacitance diode arrays are multiple, discrete, isolated junctions fabricated by a planar process and mounted in a 14-PIN ceramic DIP package for use as steering diodes protecting up to eight I/O ports from ESD, EFT, or surge by directing them to the positive side of the power supply line and to ground (see Figure 1). An external TVS diode may be added between the positive supply line and ground to prevent over- voltage on the supply rail. They may also be used in fast switching core-driver applications. This includes computers and peripheral equipment such as magnetic cores, thin-film memories, plated-wire memories, etc., as well as decoding or encoding applications. These arrays offer many advantages of integrated circuits such as high- density packaging and improved reliability. This is a result of fewer pick and place operations, smaller footprint, smaller weight, and elimination of various discrete 14-PIN Ceramic DIP packages that may not be as user friendly in PC board mounting. IMPORTANT: For the most current data, consult MICROSEMIs website: WWW.Microsemi .COM 1N66550099 1N6509 Isolated Diode Array with SCOTTSDALE DIVISION HiRel MQ, MX, MV, and MSP Screening Options SYMBOLS & DEFINITIONS Symbol DEFINITION V Minimum Breakdown Voltage: The minimum voltage the device will exhibit at a specified current. BR V Maximum Forward Voltage: The maximum forward voltage the device will exhibit at a specified current. F Maximum Leakage Current: The maximum leakage current that will flow at the specified voltage and I R temperature. Capacitance: The capacitance of the TVS as defined 0 volts at a frequency of 1 MHz and stated in C t picofarads. SCHEMATIC PACKAGE DIMENSIONS CIRCUIT Supply rail (+V ) CC I/O Port GND (or -V ) CC Steering Diode Application FIGURE 1 Copyright 2003 Microsemi Page 2 5-03-2004 REV A Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503