Radio Shack TRS-80 Service Manual page 36

CPU MODULE PARTS LIST (cont'd)
MANUFACTURER'S
RADIO SHACK
SYMBOL
DESCRIPTION
PART NUMBER
PART NUMBER
U72
74LSJO, 8~nput NAND gate 8020030 AMX3556
U73
74LS27, Triple 3-input NOR gate 8020027 AMX4668
U74 74LSl4. Hex Inverter Quad 2·input
8020004
AMX3552
U75
74LS08, Quac..l 2-iu1Al1 AND gate 8020008 AMX3698
U7.
14L$361. Tn·State Hex Buffer
802<1361
AMX3567
U77
Z-BO.CPU
804 7080
AMX3586
U78
74LS74. Dual "D" Flip·Flop 8020074 AMX3558
PositiVI! Edge Triggered
U79
MC1741, Operational Amplifier 805.0741 AMX4258
ueo
MC1458
805<>458 AMX4661
U81
MCM2114. RAM
8040004
AXX3038
U82
MCM2114, RAM 804{)OO4 AXX3038
U83
74LS14. Dual "0" Flip·Flop
8020014 AMX3558
Positive Edge Triggered
U84
74LS367. Tri·State Hex Buffer 802'()361 AMX3561
U85
14lS74. Dual "0" Flip·Flop 8020014
AMX3558
Positive Edge Triggered
U86
74LS32. Quad 2-input OR gate 802-0032 AMX3557
U87
14lS04, Hex Inverter
802000'
AMX3552
U88 14L$38, Quad 2·ioput NAND Buffer
802-0038 AMX4328
with Open Collector Outpuu
U89
14LS32, Quad 2-inpvt OR gate
8020032 AMX3557
U90
74LS245 802.()245
AMX4470
U91
74LS244, Line Driver
802.()244 AMX3864
U92
74LS244, Line Driver
802.()244
AMX3864
U93
Not Used
-------
------
U94 /4LS273, Octal "0" Flip-Flop
802'()273 AMX4227
U95 74L$244, Line Driver
802.()244 AMX3864
U9.
LM33!
805.()339
AMX4200
U97 MC75452 805.{)452 AMX3573
U98
74LS174, Hex Quad "0" Flip-Flop 802.{) 174
AMX3565
U99
74L$244, Line Driver
802{)244
AMX3864
Ul00
74LS174, Hex Quad "D" Flip·Flop 802{)174 AMX3565
U101
74LS245
802.{)245
AMX447Q
Ul02 74LS244, Lina Driver
802.Q244
AMX3864
U103
74LS367, Tri-State Hex Buffer 802.()367
AMX3567
U104
ROM A, MCM364
804·1364
AXX3039
U105 ROM B, MCM332
80HJ332
AXX3037
U106 ROM C, MCM68A
804·03168 AMX4642
U107 74LS32, Quad 2~nput OR gate
802-0032 AMX3557
U108
74L510, Triple 3·input NAND gate
B02.()010
AMX3898
RESISTORS
Rl
910 ohm. %W, 5%, Carbon Film 820-7191
AN0192EEC
R2
4.7K, %W, 5%, Carbon'film
820-7247
AN0247EEC
R3
4.7K, %W, 5%, Caroon Film
820-7247
AN0247EEC
R'
4.7K, 'l.W. 5%. Carbon Film
820-7247
AN0247EEC
R5
910 ohm, %W, 5%, Carbon Film
820-7191
AN0192EEC
R.
4.7K, %W, 5%,Carbon Film
820·7247
AN0247EEC
R7
lOOK, %W, 5%, Carbon Film 820-7410
AN0371EEC
R8
4.7K, %W, 5%. Carbon Film
820-7247
AN0247EEC
29