MAX3232CUE Maxim Integrated Products, MAX3232CUE Datasheet - Page 11

• Manufacturer Part Number: MAX3232CUE
• Description: RS232 TRANSCVR PKG 16PIN 16TSSOP
• Manufacturer: Maxim Integrated Products
• Type: Transceiverr

Specifications of MAX3232CUE

• Number Of Drivers/receivers: 2/2
• Protocol: RS232
• Voltage - Supply: 3 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: Q1290153

The MAX3222/MAX3232/MAX3241 maintain the RS-232
±5.0V minimum transmitter output voltage even at high
data rates. Figure 5 shows a transmitter loopback test
circuit. Figure 6 shows a loopback test result at
120kbps, and Figure 7 shows the same test at 235kbps.
For Figure 6, all transmitters were driven simultaneously
at 120kbps into RS-232 loads in parallel with 1000pF.
For Figure 7, a single transmitter was driven at 235kbps,
and all transmitters were loaded with an RS-232 receiver
in parallel with 1000pF.
The MAX3237 maintains the RS-232 ±5.0V minimum
transmitter output voltage at data rates up to 1Mbps.
Figure 8 shows a loopback test result at 1Mbps with
MBAUD = V
loaded with an RS-232 receiver in parallel with 250pF.
Figure 5. Loopback Test Circuit
Transceivers Using Four 0.1µF External Capacitors
3.0V to 5.5V, Low-Power, up to 1Mbps, True RS-232
C1
C2
V
V
0V
CC
CC
*
MAX3222/MAX3241 ONLY
0.1µF
CC
SHDN
T_ IN
R_ OUT
EN
C1+
C1-
C2+
C2-
. For Figure 8, all transmitters were
*
______________________________________________________________________________________
*
MAX3222
MAX3232
MAX3237
MAX3241
GND
V
CC
T_ OUT
5kΩ
R_ IN
High Data Rates
V+
V-
C3
C4
1000pF
Figure 6. MAX3241 Loopback Test Result at 120kbps
Figure 7. MAX3241 Loopback Test Result at 235kbps
Figure 8. MAX3237 Loopback Test Result at 1000kbps
(MBAUD = V
R1OUT
T1OUT
+5V
R1OUT
+5V
+5V
T1OUT
-5V
0V
0V
0V
T1IN
T1IN
V
CC
V
V
= 3.3V
CC
CC
= 3.3V
= 3.3V
CC
)
200ns/div
5µs/div
2µs/div
T_IN
T_OUT = R_IN
5kΩ + 250pF
R_OUT
150pF
5V/div
5V/div
5V/div
5V/div
5V/div
5V/div
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