Radio Shack TRS-80 Service Manual page 57

FLOPPY OISK INTERFACE PC BOARO PARTS LIST
MANUFACTURER'S
RADIO SHACK
SYMBOL DESCRIPTION PART NUMBER PART NUMBER
INTEGRATED CIRCUITS (cont'd)
U16
74LS367. Hex Buffer
802.()367 AMX3567
U17
74LS02, NAND gale
8020002 AMX3551
U18 74lS74,
Dual
"0"
Flip-Flop
802.()O74 AMX3558
U19 74lS368, Hex Inverter/Buffer B02.()368
AMX3568
U20
MC14040B, Binary Counter 803.Q04Q AMX4666
U21
7416, Hex Inverter/Buffar
800-0016
----------
U22
74LS157, Quad Multiplexer 802-0157 AMX3563
U23
74lS123, Mono
Multiplexer
a02{)123
AMX3803
U2.
74lS74, Dual "0" Flip-Flop
802.0074
AMX3558
U2'
74LS04, Hex Inverter
802.QOO4 AMX3552
RESISTORS
Rl
2.2K,1/4W,5% 820-7222 AN0216EEC
R2
150ohm, 1!4W, 5%
820-7115
AN0142EEC
R3
150 ohm, 6 pin resistor netWork 829.0012 ARX0241
R'
2.2K, 1!4W, 5% 820-7222 AN0216EEC
R'
10K, Trim Pot 827-9310 AP7167
R.
50K, Trim Pot
827-9350
AP7168
R7
1OOK, Trim Pot 827-9410
---------
R8
10K, T!4W, 5%
820-7310
AN0281 EEC
R9
47K, 1/4W, 5%
820-7347 AN0340EEC
RlO
47K, 1/4W, 5% 820-7347 AN0340EEC
Rll
10K, 1!4W, 5% 820-7310 AN0281EEC
R12
10K, 1/4W, 5%
820-7310
AN0281 EEC
R13
47 ohm, 1/4W, 5%
820-7047
AN0099EEC-
Rl'
270K,1/4W,5% 820-7427
---------
R15
150 ohm, 10 pin resistor network 8290013
ARX0242
Rl.
10K, 1/4W, 5% 820-7310
AN0281EEC
R17
910ohm, 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
FOe Board, complete assembly
AXX0510
FOC Board, without major chips
AXX0509
50