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MAX3244EAI View Datasheet(PDF) - Maxim Integrated

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MAX3244EAI Datasheet PDF : 21 Pages
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MAX3224E/MAX3225E/
MAX3226E/MAX3227E/MAX3244E/MAX3245E
±15kV ESD-Protected, 1µA, 1Mbps 3.0V to 5.5V,
RS-232 Transceivers with AutoShutdown Plus
6
5
4
3
VCC = 3.0V
VOUT+
2
1
VOUT+
0
-1
-2
-3
VCC
-4
VOUT-
VOUT-
-5
-6
0 1 2 3 4 5 6 7 8 9 10
LOAD CURRENT PER TRANSMITTER (mA)
Figure 13b. MAX324_E Transmitter Output Voltage vs. Load
Current per Transmitter
Mouse Driveability
The MAX3244E/MAX3245E are specifically designed to
power serial mice while operating from low-voltage
power supplies. They have been tested with leading
mouse brands from manufacturers such as Microsoft
and Logitech. The MAX3244E/MAX3245E successfully
drove all serial mice tested and met their respective
current and voltage requirements. The MAX3244E/
MAX3245E dual charge pump ensures the transmitters
supply at least ±5V during worst-case conditions.
Figure 13b shows the transmitter output voltages under
increasing load current. Figure 13a shows a typical
mouse connection.
Interconnection with 3V and 5V Logic
The MAX3224E–MAX3227E/MAX3244E/MAX3245E can
directly interface with various 5V logic families, includ-
ing ACT and HCT CMOS. See Table 4 for more informa-
tion on possible combinations of interconnections.
Table 5 lists other Maxim ESD-powered transceivers.
Table 4. Logic Family Compatibility with Various Supply Voltages
SYSTEM
POWER-SUPPLY
VOLTAGE (V)
3.3
5
5
VCC SUPPLY
VOLTAGE
(V)
3.3
5
3.3
COMPATIBILITY
Compatible with all CMOS families
Compatible with all TTL and CMOS families
Compatible with ACT and HCT CMOS, and with AC, HC, or CD4000 CMOS
Table 5. ±15kV ESD-Protected, 3.0V to 5.5V Powered RS-232 Transceivers from Maxim
PART
MAX3241E
MAX3243E
MAX3244E
MAX3245E
MAX3232E
MAX3222E
MAX3223E
MAX3224E
MAX3225E
MAX3221E
MAX3226E
MAX3227E
SUPPLY
VOLTAGE
RANGE
(V)
NO.
OF
Tx/Rx
SUPPLY
CURRENT
(µA)
Auto-
Shutdown
Plus
Auto-
Shutdown
Human
Body
Model
(kV)
+3.0 to +5.5 3/5
300
+3.0 to +5.5 3/5
1
+3.0 to +5.5 3/5
1
Yes
+3.0 to +5.5 3/5
1
Yes
+3.0 to +5.5 2/2
300
+3.0 to +5.5 2/2
300
+3.0 to +5.5 2/2
1
+3.0 to +5.5 2/2
1
Yes
+3.0 to +5.5 2/2
1
Yes
+3.0 to +5.5 1/1
1
+3.0 to +5.5 1/1
1
Yes
+3.0 to +5.5 1/1
1
Yes
±15
Yes
±15
±15
±15
±15
±15
Yes
±15
±15
±15
Yes
±15
±15
±15
IEC 1000-4-2
Contact
Discharge
(kV)
IEC 1000-4-2
Air-Gap
Discharge
(kV)
GUARANTEED
DATA RATE
(kbps)
±8
±15
250
±8
±15
250
±8
±15
250
±8
±15
1Mbps
±8
±15
250
±8
±15
250
±8
±15
250
±8
±15
250
±8
±15
1Mbps
±8
±15
250
±8
±15
250
±8
±15
1Mbps
Maxim Integrated
17
 

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