Radio Shack TRS-80 Service Manual page 36

CPU MODULE PARTS LIST (cont'd)
MANUFACTURER'S RADIO SHACK
SYMBOL
DESCRIPTION
PART NUMBER PART NUMBER
-
U25 416, RAM 804-1016
AXX3021
j j
I
j
U32 416, RAM 804-1016
AXX3021
U33 74LS04, Hex Inverter
802-0004 AMX3552
U34 7 4LS05, Hex Inverter with
802-0005 AMX3553
Open Collecter
U35 74LS05, Hex Inverter with
802-0005 AMX3553
Open Collecter
U36 MCM68A316E, Character Generator
804-4316 AXX3040
U37 74LS00, Quad 2-input NANO gate
802-0000 AMX3550
U38 74LS266, Quad Exclusive NOR gate 802-0266
AMX4660
with Open Collecter Outputs
U39 74LS08, Quad 2-input AND gate 802-0008
AMX3698
U40 74LS138, Decoder/De-multiplexer
802-0138 AMX4583
U41 74LS138, Decoder/De-multiplexer
802-0138 AMX4583
U42 74LS157, Quad 2-line to 1-line
802-0157 AMX3563
Data Selecter/Multiplexer
U43 416, RAM
804-1016
AXX3021
j
j
l I
U50 416, RAM
804-1016 AXX3021
U51 MC14050B
803-0050 AMX4584
U52
74LS166, 8-bit Parallel In/Serial Out
802-0166 AMX3564
Shift Register
U53
74LS244, Line Driver
802-0244 AMX3864
U54
74LS153, Dual 4-line to 1-line
802-1053 AMX3562
Data Se lecter /Multiplexer
U55 74LS175, Hex/Quad "D" Flip-Flop 802-0175 AMX3566
with Clear
U56
74LS393 802-0393
AMX3706
U57
74LS02, Quad 2-input NOR gate
802-0002 AMX3551
U58 74LS139, Decoder/De-multiplexer 802-0139
AMX3800
U59 74LS32, Quad 2-input OR gate 802-0032
AMX3557
U60
74LS145, BCD/Decimal 802-0145
AMX4659
Decoder /Driver
U61
74LS175, Hex/Quad "D" Flip-Flop 802-0175
AMX3566
U62
74LS90, Decade, (712),
802-0090 AMX3804
Binary Counter
U63
8T26, Bus Transceiver 806-0026
AMX4261
U64
8T26, Bus Transceiver
806-0026 AMX4261
U65
MC14050B
803-0050
AMX4584
U66 7 4 LS240, Octal Buffer 802-0240 AMX4225
U67 74LS245
802-0245 AMX4470
U68
74LS273
802-0273 AMX4227
U69 74LS157, Quad 2-line to Hine 802-0157
AMX3563
Data Selector/Multiplexer
U70 74LS157, Quad 2-line to 1-line
802-0157 AMX3563
Data Selector/Multiplexer
U71 74LS157, Quad 2-line to 1-line
801-0157 AMX3563
Data Selector/Multiplexer
28