Yamaha DME24N Service Manual page 43

TC7SH08FU (XR680A00)
TC7S08F (XM616A00)
2 Input AND Gate
DME24N DM: IC703
DC: IC101
DME64N DM: IC703
DC: IC101
IN B
1 5
IN A
2
3 4
GND
TC7WB66FK (X4264A00)
Analog Switch
DME64N CA: IC708-711
JK: IC312-315
A1 1 8
B1
2 7
OE2 3 6
GND 4 5
MAX3221CPWR (X2757A00)
Single-channel RS-232 Line Driver/Receiver
DME24N JK: IC014
DME64N CA: IC807
EN FORCEOFF
1 16
C1+ Vcc
2 15
Auto-
powerdown
V+ GND
3 14
C1– DOUT
4 13
C2+ FORCEON
5 12
C2– DIN
6 11
V– INVALID
7 10
RIN
8 9 ROUT
5kΩ
TC7W14F TE12L (XR336A00)
Triple lnverter
DME24N DC: IC108
DME64N DC: IC108
1A
3Y
Vcc
2A
GND
OUT Y
AM26LS31CNSR (XU996A00)
Quad Line Driver
DME64N CA: IC704, 706, 712
JK: IC316
1A
Vcc
1Y
OE1
1Z
B2
ENABLE G
A2
2Z
2Y
2A
GND
INPUT
A
H
L
H
L
X
EACH DRIVER
INPUTS
VALID RIN
DIN FORCEON FORCEOFF
RS-232 LEVEL
X X L X
L H H X
H H H X
L L H Yes
H L H Yes
L L H No
H L H No
H=high level, L=low level, X=irrelevant, Z=high impedance
EACH RECEIVER
INPUTS
OUTPUT
VALID RIN
RIN EN ROUT
RS-232 LEVEL
L L X H
H L X L
X H X Z
Open L No H
H=high level, L=low level, X=irrelevant,
Z=high impedance (off), Open=disconnected
input or connected drive off
1 8 Vcc
2 7 1Y
3 6
3A
4 5
2Y
1
16 Vcc
2
15 4A
3
14 4Y
4
13 4Z
5
12
ENABLE G
6
11
3Z
7 10
3Y
8 3A
9
ENABLES OUTPUTS
G G Y Z
H X H L
H X L H
X L H L
X L L H
L H Z Z
H= high level
L= low level
X= irrelevant
Z= high impedance (off)
OUTPUT
DRIVER STATUS
DOUT
Z Powede off
H
Normal operation with
auto-powerdown disabled
L
H
Normal operation with
auto-powerdown enabled
L
Z
Powered off by
Z auto-powerdown feature
DME24N/DME64N
TC7SE32FU (XW814A00)
2-Input OR Gate
DME24N DM: IC315
DME64N DM: IC315
CA: IC811
Vcc
IN B
1 5
IN A
2
3 4
OUT Y
GND
AM26LS32ACNSR (X3251A00)
Quadruple Differential Line
Receivers
DME64N CA: IC713
JK: IC309, 311, 317
1B Vcc
1 16
1A 4B
2 15
1Y 4A
3 14
G 4Y
4 13
2Y G
5 12
2A 3Y
6 11
2B 3A
7 10
GND
8 9 3B
EACH RECEIVER
INPUTS
OUTPUT
ENABLES
DIFFERENTIAL
G G
A–B
H X
V ID V IT+
X L
H X
V IT– V ID V IT+
X L
H X
V ID V IT–
X L
X L H
H X
Open
X L
H=high level, L=low level, ?=indeterminate,
X=irrelevant, Z=high impedance (off)
DG411DY-T1 (X5134A00)
Monolithic Quad SPST Analog Switches
DME24N AD: IC101, 105, 201, 301, 305,
IC401, 501, 505, 601, 701,
IC705, 801
IN1 IN2
1 16
D1 D2
2 15
S1 S2
3 14
V- V+
4 13
GND VL
5 12
S4 S3
6 11
D4 D3
7 10
IN4
IN3
8 9
LOGIC SWITCH
0 ON
1 OFF
Y
H
H
?
?
L
L
Z
H
H
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