1ꢀ5k EꢁDꢂ-rotected, Down to 10nA, 3.0k to ꢀ.ꢀk,
Up to 1Mbps, True Rꢁꢂ232 Transceivers
-in Description (continued)
PIN
MAX3222E
MAX3232E
MAX3241E
NAME
FUNCTION
MAX3237E
TSSOP/
SSOP
TSSOP/
SSOP
SO/DIP
SO/DIP
SSOP/SO
QFN
16
17
18
18
19
20
15
16
—
18
19
—
2
25
26
22
24
26
21
GND
Ground
V
26
14*
+3.0V to +5.5V Supply Voltage
Shutdown Control. Active low.
CC
SHDN
1, 10,
11, 20
9, 16,
25, 32
No Connection
—
—
—
11, 14
—
—
—
—
15*
16
—
N.C.
MegaBaud Control Input.
Connect to GND for normal
operation% connect to V
—
—
—
—
MBAUD
for
CC
1Mbps transmission rates.
Noninverting Complementary
Receiver Outputs. Always active.
—
—
20, 21
19, 20
R_OUTB
*These pins have an active positive feedback resistor internal to the MAX3237E, allowing unused inputs to be left unconnected.
V
V
CC
CC
0.1 F
0.1 F
V
V
CC
CC
C1+
C1+
V+
V-
V+
V-
C1
C2
C1
C2
C3
C4
C3
C4
C1-
C2+
C1-
C2+
MAX3222E
MAX3232E
MAX3237E
MAX3241E
MAX3222E
MAX3232E
MAX3237E
MAX3241E
C2-
C2-
T_ OUT
R_ IN
T_ OUT
R_ IN
T_ IN
T_ IN
R_ OUT
R_ OUT
5k
5k
2500pF
150pF
3k
7k
GND
GND
MINIMUM SLEW-RATE TEST CIRCUIT
Figure 1. Slew-Rate Test Circuits
MAXIMUM SLEW-RATE TEST CIRCUIT
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7
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
