Radio Shack TRS-80 Model 4 - Page 74

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PARTS LIST, FLOPPY DISK INTERFACE PC BOARD
#8858060
SYMBOL DESCRIPTION
MANUFACTURER’S
PART NUMBER
RADIO SHACK
PART NUMBER
INTEGRATED CIRCUITS (cont’d)
U6 74LS174, Quad “D” Flip-Flop 802-0174 AMX3565
U7 WD1793 850-9002 AXX3041
U8 74LS38. NAND Buffer 802-0038 AMX4328
U9 7416, Hex Inverter/Buffer 800-0016 -------
Ul0 74LS260, Dual NOR gate 802-0260 -------
Ull WD1691 850-9009 AMX4471
Ul2 MC1 40733, AND gate 803-0073 -------
U13 WD2143-01 850-9006 AMX4472
U14 74LS629, VCO 802-0629 AMX4663
U15 74LS1 23, Mono Multivibrator 802-0123 AMX3803
U16 74LS367, Hex Buffer 802-0367 AMX3567
U17 74LS02, NAND gate 802-0002 AMX3551
U18 74LS74, Dual “D” Flip-Flop 802-0074 AMX3558
U19 74LS368, Hex Inverter/Buffer 802-0368 AMX3568
U20 MC14040B, Binary Counter 803-0040 AMX4666
U21 7416, Hex Inverter/Buffer 800-0016 -------
U22 74LS1 57, Quad Multiplexer 802-0157 AMX3563
U23 74LS1 23, Mono Multiplexer 802-0123 AMX3803
U24 74LS74, Dual “D” Flip-Flop 802-0074 AMX3558
U25 74LS04, Hex Inverter 802-0004 AMX3552
RESISTORS
Rl 2,2K, 1/4W, 5% 820-7222 AN0216EEC
R2 150 ohm, 1/4W, 5% 820-7115 AN0142EEC
R3 150 ohm, 6 pin resistor network 829-0012 ARX024l
R4 2.2K, 1/4W, 5% 820-7222 AN0216EEC
R5 1K, Trim Pot 827-9210 AP0835
R6 50K, Trim Pot 827-9350 AP7168
R7 100K, Trim Pot 827-9410
R8 10K, 1/4W, 5% 820-7310 AN0281EEC
R9 47K, 1/4W, 5% 820-7347 AN0340EEC
R10 47K, 1/4W, 5% 820-7347 AN0340EEC
R11 10K, l/4W, 5% 820-7310 AN0281EEC
R12 10K, l/4W, 5% 820-7310 AN0281EEC
R13 47 ohm, 1/4W, 5% 820-7047 AN0099EEC
R14 270K, 1/4W, 5% 820-7427 ---------
R15 150 ohm, 10 pin resistor network 829-0013 ARX0242
R16 10K, 1/4W, 5% 820-7310 AN0281EEC
R17 910 ohm, 1/4W, 5% 820-7191 AN0192EEC
R18 910 ohm, 1/4W, 5% 820-7191 AN0192EEC
R19 2,2K, 1/4W, 5% 820-7222 AN0216EEC
R20 22K, 1/4W, 5% 820-7322
MISCELLANEOUS
Socket, 18 pin 850-9006 AJ6701
Socket, 20 pin 850-9009 AJ6760
Socket, 40 pin 850-9002 AJ6580
FDC Board, complete assembly AXX0510
FDC Board, without major chips AXX0509