J-9
Version 1.73 Copyright © 1997 Link Communications Inc. 1/18/97
Bill of Materials Cont...
Item Quantity Reference Part Description
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19 3 R20,R21,R26 100K RESISTOR, 1%, 0.25W
20 1 R6 100K VAR.RESISTOR
21 6 R7,R8,R12,R14,R15,R17 10K RESISTOR, 1%, 0.25W
22 2 R16,R22 47K RESISTOR, 1%, 0.25W
23 1 R9 47K RESISTOR, 6 PIN, SIP
24 1 R11 200K VAR.RESISTOR
25 1 R13 680 RESISTOR, 1%, 0.25W
26 1 R19 470K RESISTOR, 1%, 0.25W
27 1 R23 50K VAR.RESISTOR
28 2 R24,R25 12K RESISTOR, 1%, 0.25W
29 1 U1 74HC244 BUSS INTERFACE (LINK)
29a 1 U1 20 PIN DUAL LEAF SOCKET
30 3 U2,U10,U12 74HC574 LINE DRIVER (LINK)
30a 3 U2,U10,U12 20 PIN DUAL LEAF SOCKET
31 1 U3 M-8870 DTMF DECODER (LINK)
31a 1 U3 18 PIN DUAL LEAF SOCKET
32 1 U4 MC34072P CMOS OP-AMP (LINK)
32a 1 U4 8 PIN DUAL LEAF SOCKET
33 2 U5,U6 74HC4066 AUDIO SWITCH (LINK)
33a 2 U5,U6 14 PIN DUAL LEAF SOCKET
34 1 U7 AD557JN DAC GENERATOR (LINK)
34a 1 U7 16 PIN DUAL LEAF SOCKET
35 1 U8 LMC660CN QUAD OP-AMP (LINK)
35a 1 U8 14 PIN DUAL LEAF SOCKET
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