PDP-436SXE
164
1
2
3
4
1
2
3
4
C
D
F
A
B
E
VCC
SCL
SDA
GND
AO4
AO3
AO2
AO1
POWER ON
RESET
8bit Latch
8bit Upper
Segment R-2R
CHANNEL
DECODER
I2C BUS TRANSCEIVER
1
8
M62334FP (OB DIGITAL ASSY : IC3157)
• 8-bit 4ch I2C Bus D-A Converter with Buffer Amplifier
Pin Arrangement (Top view)
TC74VHC123AFTS1 (OB DIGITAL ASSY : IC3160)
• Dual Monostable Multivibrator/AFN/AFT Retriggerble
Pin Arrangement (Top view)
Truth Table
Block Diagram
Pin Function
AO1 1
AO2 2
AO3 3
AO4
GND
SDA
SCL
VCC
4
8
7
6
5
1A 1
Vcc
16
1B 2
1Rx/Cx
15
1CLR 3
1Cx
14
1Q 4
1Q
13
2Q 5
2Q
12
2Cx 6
2CLR
11
2Rx/Cx 7
2B
10
GND 8
2A
9
8
8bit Latch
8bit Upper
Segment R-2R
2
8bit Latch
8bit Upper
Segment R-2R
3
7
6
8bit Latch
8bit Upper
Segment R-2R
4
5
No.
Pin Name
Pin Function
1
AO1
8-bit resolution D-A converter output
2
AO2
3
AO3
4
AO4
5
GND
Ground
6
SDA
Serial data input
7
SCL
Serial clock input
8
VCC
Power supply
Inputs
Outputs
Note
A
B
CLR
Q
Q
H
H
Output enable
X
L
H
L
H
Inhibit
H
X
H
L
H
Inhibit
L
H
Output enable
L
H
Output enable
X
X
L
L
H
Reset
X: Don't care