Datasheet

MAX221
+5V, 1µA, Single RS-232 Transceiver
with AutoShutdown
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implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
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© 1999 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
TRANSISTOR COUNT: 157
___________________Chip Information
2µs/div
5V/div
5V/div
5V/div
TIN
TOUT
ROUT
Figure 7. Loopback Test Result at 120kbps
Figure 8. Loopback Test Result at 250kbps
2µs/div
5V/div
5V/div
5V/div
TIN
TOUT
ROUT
Figure 6. Loopback Test Circuit
MAX221
5k
RIN
ROUT
EN
C2-
C2+
C1-
C1+
V-
V+
V
CC
C4
C3
C1
C2
0.1µF
+5V
FORCEOFF
FORCEON
INVALID
TOUT
TIN
GND
V
CC
0V
1000pF
5V/div
FORCEON =
FORCEOFF
TOUT
5V/div
50µs/div
TIN = GND
TIN = V
CC
Figure 5. Transmitter Output Exiting Shutdown or
Powering Up