Akai LCT2765TD, Service Manual

Page: 46 / 105

MAX202E–MAX213E, MAX232E/MAX241E
±15kV ESD-Protected, +5V RS-232 Transceivers
______________________________________________________________________________________
____________Pin Configurations and Typical Operating Circuits (continued)
TOP VIEW
1
4
5
TTL/CMOS
INPUTS
TTL/CMOS
OUTPUTS
11
10
12
9
3
GND
C1-
C2+
5k
5k
C2-
T1IN
T2IN
R2OUT
R1OUT
V
CC
+5V TO +10V
VOLTAGE DOUBLER
+10V TO -10V
VOLTAGE INVERTER
16
2
6
14
7
13
8
0.1
µ
F
0.1
µ
F*
16V
0.1
µ
F*
6.3V
0.1
µ
F*
16V
0.1
µ
F*
6.3V
C1+
RS-232
OUTPUTS
RS-232
INPUTS
-10V
+10V
V+
+5V INPUT
V-
T1OUT
R1IN
R2IN
T2OUT
T1
15
T2
R1
R2
PIN NUMBERS ON TYPICAL OPERATING CIRCUIT REFER TO DIP/SO PACKAGE, NOT LCC.
* 1.0
µ
F CAPACITORS, MAX232E ONLY.
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
V
CC
GND
T1OUT
R1IN
C2+
C1-
V+
C1+
MAX202E
MAX232E
R1OUT
T1IN
T2IN
R2OUT
R2IN
T2OUT
V-
C2-
DIP/SO
Table 3. DB9 Cable Connections
Commonly Used for EIA/TIAE-232E and
V.24 Asynchronous Interfaces
PIN CONNECTION
2 Receive Data (RD) Data from DCE
3 Transmit Data (TD) Data from DTE
4 Data Terminal Ready Handshake from DTE
5 Signal Ground
Reference point for
signals
6 Data Set Ready (DSR) Handshake from DCE
7 Request to Send (RTS) Handshake from DTE
8 Clear to Send (CTS) Handshake from DCE
9 Ring Indicator Handshake from DCE
1
Received Line Signal
Detector (sometimes
called Carrier Detect,
DCD)
Handshake from DCE
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