BusCard (Revision A) Parts List Printed Circuit Board: PCB1 Two layer (top and bottom copper), 0.062" (1.57 mm) overall board thickness Integrated Circuits: U1 TMS 2564JL 65,536-bit, Ultraviolet-Erasable, Electrically Programmable Read-Only Memory (EPROM) U2 8255AC-5 Programmable Peripheral Interface, 40-Pin, 4 MHz U3 75160AN IEEE-488 GPIB Octal Bus Transceiver U4 75161AN IEEE-488 GPIB Octal Bus-Management and Data-Transfer Transceiver U5 74LS32N Quadruple 2-Input Positive-OR Gates U6 74LS04N Hex Inverting Gates U7 74LS08N Quadruple 2-Input Positive-AND Gates U8 74LS00N Quadruple 2-Input Positive-NAND Gates U9 74LS21N Dual 4-Input Positive-AND Gates U10 74LS139N Dual 1-of-4 Decoder/Demultiplexer U11 74LS21N Dual 4-Input Positive-AND Gates U12 74LS04N Hex Inverting Gates XU1 IC Socket, DIP, 28-Pin (2x14), 0.1" (2.54 mm) contact spacing (pitch), 0.6" (15.24 mm) row spacing XU2 IC Socket, DIP, 40-Pin (2x20), 0.1" (2.54 mm) contact spacing (pitch), 0.6" (15.24 mm) row spacing XU13 IC Socket, DIP, 28-Pin (2x14), 0.1" (2.54 mm) contact spacing (pitch), 0.6" (15.24 mm) row spacing XU14 IC Socket, DIP, 28-Pin (2x14), 0.1" (2.54 mm) contact spacing (pitch), 0.6" (15.24 mm) row spacing XU15 IC Socket, DIP, 28-Pin (2x14), 0.1" (2.54 mm) contact spacing (pitch), 0.6" (15.24 mm) row spacing Transistors: Q1 2N4401 NPN Transistor, 600 mA, 40 V Q2 2N3904 NPN Transistor, 200 mA, 40 V Diodes: D1 1N4148 Small Signal Diode, 200 mA, 100 V D2 1N4148 Small Signal Diode, 200 mA, 100 V D3 1N4148 Small Signal Diode, 200 mA, 100 V D4 1N4148 Small Signal Diode, 200 mA, 100 V D5 1N4148 Small Signal Diode, 200 mA, 100 V D6 1N4148 Small Signal Diode, 200 mA, 100 V D7 1N4148 Small Signal Diode, 200 mA, 100 V D8 1N4148 Small Signal Diode, 200 mA, 100 V Resistors: R1 4.7 kohm, 1/4 watt, 5% tolerance R2 1.5 kohm, 1/4 watt, 5% tolerance R3 4.7 kohm, 1/4 watt, 5% tolerance R4 4.7 kohm, 1/4 watt, 5% tolerance R5 4.7 kohm, 1/4 watt, 5% tolerance R6 1 kohm, 1/4 watt, 5% tolerance RN1 SIL Resistor Network, 4.67 kohm, 10 Pins, 9 Resistors, Bussed Arrangement RN2 SIL Resistor Network, 4.67 kohm, 10 Pins, 9 Resistors, Bussed Arrangement Capacitors: C1 CK05BX104K Ceramic Capacitor, 0.1 uF, 50 V, Radial, 10% tolerance C2 CK05BX104K Ceramic Capacitor, 0.1 uF, 50 V, Radial, 10% tolerance C3 CK05BX104K Ceramic Capacitor, 0.1 uF, 50 V, Radial, 10% tolerance C4 CK05BX104K Ceramic Capacitor, 0.1 uF, 50 V, Radial, 10% tolerance Switch: S1 8 SPST, DIP Switch, Raised Slide XS1 IC Socket, DIP, 16-Pin (2x8), Wirewrap, 0.1" (2.54 mm) contact spacing (pitch), 0.3" (7.62 mm) row spacing Jacks and Plugs: J1 Female Card Edge Connector, EDAC 345-044-540-201, 44-contact (2-rows of 22 contacts), 0.1" (2.54 mm) contact spacing (pitch), 0.2" (5.08 mm) row spacing, 0.062" (1.57 mm) card thickness, wirewrap termination, 3A, 250 V J2 Jumper pins consisting of 12 wirewrap pins used in conjunction with JP1-4. These can be grouped by function into four groups of three pins. i.e., there are three pins available, and therefore two possible positions, for each of the four 2-position shunts (JP1, 2, 3, and 4). J3 Consists of 2 wirewrap pins J4 Consists of 3 pins (a 4-pin header with a gap where one pin was removed) J5 0.1" (2.54 mm) contact spacing (pitch), 0.2" (5.08 mm) row spacing J6 0.156" (3.96 mm) contact spacing (pitch), 0.2" (5.08 mm) row spacing J7 0.1" (2.54 mm) contact spacing (pitch), 0.2" (5.08 mm) row spacing JP1 Shunt, 2-Position JP2 Shunt, 2-Position JP3 Shunt, 2-Position JP4 Shunt, 2-Position P. David Buchan, www.pdbuchan.com Revision 0, January 18, 2015