Datasheet

Figure 7. MAX225 Pin Configuration and Typical Operating Circuit
13
14
28
27
26
25
24
23
22
21
1
2
3
4
5
6
7
8
V
CC
V
CC
V
CC
400kΩ
400kΩ
400kΩ
400kΩ
400kΩ
T1OUT
+5V
+5V
0.1µF
+5V
3
28 27
4
25
24
23
26
5
6
7
22
GND
ENR
ENR
GND
21
+5V
+5V
+5V
T2OUT
T3OUT
T4OUT
5kΩ
5kΩ
5kΩ
5kΩ
5kΩ
14
13
2
1
T5OUT
T5OUT
R1IN
R2IN
R3IN
R4IN
R5IN
T1IN
11
12
18
17
16
15
10
9
8
19
20
T2IN
T3IN
T4IN
T5IN
ENT
R2OUT
R3OUT
R4OUT
PINS (ENR, GND, V
CC
, T5OUT) ARE INTERNALLY CONNECTED.
CONNECT EITHER OR BOTH EXTERNALLY. T5OUT IS A SINGLE DRIVER.
R5OUT
R1OUT
V
CC
ENT
T3IN
T2IN
T1IN
ENR
ENR
T4IN
T5IN
R4OUT
R5OUT
R3IN
R3OUT
R2OUT
R1OUT
20
19
18
17
9
10
11
12
R5IN
R4IN
T3OUT
T4OUT
T2OUT
T1OUT
R1IN
R2IN
SO
MAX225
16
15
T5OUT
MAX225 FUNCTIONAL DESCRIPTION
5 RECEIVERS
5 TRANSMITTERS
2 CONTROL PINS
1 RECEIVER ENABLE (ENR)
1 TRANSMITTER ENABLE (ENT)
T5OUT
GND
GND
TOP VIEW
+
MAX220–MAX249 +5V-Powered, Multichannel
RS-232 Drivers/Receivers
www.maximintegrated.com
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