MAX3244ECWI+ Maxim Integrated Products, MAX3244ECWI+ Datasheet - Page 7

• Manufacturer Part Number: MAX3244ECWI+
• Description: IC TXRX RS232 250KBPS SD 28-SOIC
• Manufacturer: Maxim Integrated Products
• Type: Transceiverr

Specifications of MAX3244ECWI+

• Number Of Drivers/receivers: 3/5
• Protocol: RS232
• Voltage - Supply: 3 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC (7.5mm Width)
• Propagation Delay Time Ns: 0.15 us
• Operating Supply Voltage: 3 V to 5.5 V
• Supply Current: 1 uA
• Operating Temperature Range: 0 C to + 70 C
• Data Rate: 250 Kbps
• Mounting Style: SMD/SMT
• Number Of I/os: 3 / 5
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

______________________________________________________________ Pin Description
±15kV ESD-Protected, 1µA, 1Mbps, 3.0V to 5.5V,
TQFN
6, 15
7, 14
8, 13
19
20
1
2
3
4
5
9
RS-232 Transceivers with AutoShutdown Plus
MAX3224E
MAX3225E
TSSOP
SSOP/
10, 15
8, 17
9, 16
DIP/
11
1
2
3
4
5
6
7
_______________________________________________________________________________________
TQFN
14
16
15
10
1
2
3
4
5
6
7
MAX3226E
MAX3227E
TSSOP
SSOP/
13
10
1
2
3
4
5
6
7
8
9
PIN
SO/ SSOP/ TSSOP
MAX3244E
MAX3245E
9, 10, 11
15-19
4-8
28
27
24
21
—
1
2
3
MAX3245E
15, 16, 17,
(TQFN)
7, 8, 9
19, 20
1-5
—
31
30
26
33
34
35
23
INVALID
READY
T_OUT
R_OUT
NAME
R_IN
C1+
C2+
C1-
C2-
V+
V-
Ready to Transmit Output,
active-high. READY is
enabled high when V- goes
below -4V and the device is
ready to transmit.
Positive Terminal of Voltage-
Doubler Charge-Pump
Capacitor
+5.5V generated by the
charge pump
Negative Terminal of
Voltage-Doubler Charge-
Pump Capacitor
Positive Terminal of
Inverting Charge-Pump
Capacitor
Negative Terminal of
Inverting Charge-Pump
Capacitor
-5.5V Generated by the
Charge Pump
RS-232 Transmitter Outputs
RS-232 Receiver Inputs
TTL/CMOS Receiver
Outputs
Valid Signal Detector
Output, active low. A logic
high indicates that a valid
RS-232 level is present on a
receiver input.
FUNCTION
7