MAX3387EEUG+T Maxim Integrated Products, MAX3387EEUG+T Datasheet - Page 6

• Manufacturer Part Number: MAX3387EEUG+T
• Description: IC TXRX RS232 250KBPS 24-TSSOP
• Manufacturer: Maxim Integrated Products
• Type: Transceiverr

Specifications of MAX3387EEUG+T

• Number Of Drivers/receivers: 3/3
• Protocol: RS232
• Voltage - Supply: 3 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 24-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3V, ±15kV ESD-Protected, AutoShutdown Plus
RS-232 Transceiver for PDAs and Cell Phones
6
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PIN
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1
2
3
4
5
6
7
8
9
FORCEOFF
FORCEON
INVALID
R3OUT
R2OUT
R1OUT
T3OUT
T2OUT
T1OUT
NAME
R3IN
R2IN
R1IN
GND
T1IN
T2IN
T3IN
C1+
C2+
V
C1-
C2-
V+
V
V-
CC
L
Positive Terminal of the Voltage-Doubler Charge-Pump Capacitor
+5.5V Supply Generated by the Charge Pump
Negative Terminal of the Voltage-Doubler Charge-Pump Capacitor
Positive Terminal of the Inverting Charge-Pump Capacitor
Negative Terminal of the Inverting Charge-Pump Capacitor
-5.5V Generated by the Charge Pump
TTL/CMOS Transmitter Inputs
Output of the Valid Signal Detector. INVALID is high if a valid RS-232 signal is present on
the receiver inputs.
TTL/CMOS Transmitter Inputs
Force-On Input. Drive FORCEON high to override automatic circuitry keeping transmitters
on (FORCEOFF must be high) (Table 1).
TTL/CMOS Receiver Outputs. Swing between 0V and V
Logic-Level Supply. All CMOS inputs and outputs are referenced to this supply.
RS-232 Receiver Inputs
RS-232 Transmitter Outputs
Ground
+3.0V to +5.5V Supply Voltage
Force-Off Input. Drive FORCEOFF low to shut down transmitters and on-board power sup-
ply. This overrides all automatic circuitry and FORCEON (Table 1).
FUNCTION
L
.
Pin Description