AUDIO/TYMP
BOARD PARTS LIST
DESIGNATION
INTEGRATED CIRCUITS
U1
U2
U3
U4
U5
U6
U7
U8
U9
U10
U11
U12
U13
U14
U15
U16
U17
U18
U19
U20
U21
U22
U23
U24
U25
,,-‘-
U26-U28
U29
U30
U31
U32
U33
U34
U35
\
U36
‘i
U37
U38
i,
U39
DESCRIPTION
IC,
SMT, 74 HC 4075, 3 INPUT OR
IC,
SMT, 74 HCOO, QUAD 2
INPUT
NAND
IC, SMT, 74 HC02, QUAD 2 INPUT NOR
IC,
SMT, MC 34064, UNDER VOLTAGE SENSOR
IC, SMT, MC 14053,
TR1-2
CH
MUX/DEMUX
IC, SMT,
74HCC138,
1 OF 8
DECODE/DEMUX
IC,
SMT,
68HC11E1,
8 BIT MICRO
EPROM, PROGRAMMED
IC, SMT, 6264,
8K
X 8 STATIC RAM
IC, SMT, 74 HC 373, 3 STATE OCTAL LATCH
IC, SMT, 74 HC 273, OCTAL D FLIP-FLOP
SEE Ull
5905-4075
5905-0000
5905-0002
59334064
5904-4053
5905-0138
1738-0510
5904-6264
5905-0373
5905-0273
IC, SMT 74 HC 4538, DUAL MULTIVIBRATOR
IC, MC 3479, STEP MOTOR DRIVER
SEE U14
5905-4538
5431-9697
IC, SN 754377, QUAD PERIPHERAL DRIVER
SEE U16
SEE U2
5431-9697
IC,
SMT, 74 HC 595, 8 BIT I/O SHIFT REG.
SEE
U11
5909-0595
IC, MC 6840, PROGRAMMABLE TIMER
IC, SMT, 74 HC 10, 3 INPUT NAND
SEE
U10
5431-9018
5905-0010
IC, SMT, 82 C 54, PROGRAMMABLE
TIMER
SEE Ull
5929-8254
IC, SMT, 74 HC 541, OCTAL BUFFER/DRIVER
IC, SMT, 74 HC 245, 3 STATE BUS X-CIEVER
EPROM PROGRAMMED
SEE U26
-
U28
IC,
SMT, MS 62256,
32KX8,
STATIC RAM
IC, SMT, CMOSPAL, PROGRAMMED
SEE U7
IC,
SMT, LT 1054, VOLTAGE
CONV/REG
SEE U5
SEE U14
5905-054
1
5905-0245
1738-0505
5904-2256
1738-0515
5908-l 054
IC, MC 7805,
+5V
REG
5432-l 066
IC,
LM
317, REGULATOR
5432-l 024
72
PART
NUMBER
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