Sn74Lv244Apw (Au: Ic818, 825); Tc9184Ap (Ex: Ic102) - Denon AVR-2802 Service Manual

SN74LV244APW (AU: IC818, 825)

TOP VIEW
Vcc
1OE 1 20
2OE
1A1 2 19
1Y1
2Y4 3 18
2A4
1A2 4 17
1Y2
2Y3 16
5
2A3
1A3 6 15
1Y3
2Y2 7 14
1A4 8 13 2A2
2Y1 9 12 1Y4
GND
10 11 2A1
TC9459N
(EX: IC805)
TOP VIEW
Vss 1 28 V
DD
NC 2 27 NC
L-OUT 3 26 R-OUT
NC 4 25 NC
L-IN 5 24 R-IN
L-LD1 6 23 R-LD1
L-LD2 7 22 R-LD2
L-A-GND 8 21 R-A-GND
NC 9 20 NC
CS1 10 19 CS2
NC
11 18 NC
NC
NC 12 17
STB
GND 13 16
CK 14 15 DATA

TC9184AP (EX: IC102)

TOP VIEW
Vss
1 16
V
DD
BASS+ BASS+
2 15
BASS- 3 14 BASS-
13
COM 4 COM
TREBLE- 5 5 12
TREBLE-
TREBLE+
6 11 TREBLE+
7 10
GND STB
8 9
CK DATA
BU4053BCF (AU:IC256)
MM74HC4053SJ (AU: IC451)
FUNCTION TABLE
(each buffer)
INPUT
OUTPUT
OE A Y
Z-COM
L H H
L L L
H X Z
V
SS
1
NC
2
L-OUT
3
50k Ω /
91S TEP
NC
4
VR
L-IN
5
L-LD1
6
7
L-LD2
L-A-GND 8
R-ch7 to 91decoder
NC 9 L-ch7 to 91decoder
L-ch latch circuit R-ch latch circuit
Shift register (24Bit)
CS1 10
NC 11 Level shift circuit
NC 12
GND 13
CK 14
1
BASS+ 2
3
BASS-
4
COM
TREBLE- 5
TREBLE+ 6
TOP VIEW
V 16
DD
V INH6
1 $
Y1 DD
A11
Y0 2 Y-COM
#
B10
Z1 3 " X-COM
C9
Vss8
4 X1
!
V 7
EE
12 X0
Z0 5
A
6 11
INH
X0 12
B
7
V
EE X1 13
C
Vss 8 9
Y0 2
Y1 1
Z0 5
Z1 3
TC9482N
(EX: IC809)
V
DD
28
27 NC
R-OUT
26
25 NC
L-OUTA
Same as L-ch R-IN
24
R-LD1 L-A-GNDA
23
L-OUTB
22
R-LD2
21 R-A-GND
20 NC L-A-GNDB
L-OUTC
19 CS2
L-A-GNDC
NC
18
NC
17
16 STB
15 DATA
16 7 9
8 10
Level shift
Code
detect
circuit
AVR-2802/982
LEVEL
BINARY TO 1 of 2
CONVER
DECODER WITH INHIBIT
-TER
14 X
15 Y
4 Z
TOP VIEW
Vss 1 28 V
DD
NC 2 27 TEST
3 26 R-OUTA
L-INA
4 25 R-INA
5 24 R-A-GNDA
R-OUTB
6 23
L-INB 7 22 R-INB
8 21 R-A-GNDB
R-OUTC
9 20
L-INC
10 19 R-INC
11 18 R-A-GNDC
CS1 12 17 CS2
STB
GND 13 16
CK 14 15 DATA
BASS+
15
14 BASS-
13 COM
12 TREBLE-
11
TREBLE+
23