MAX1406CAE Maxim Integrated Products, MAX1406CAE Datasheet - Page 5

• Manufacturer Part Number: MAX1406CAE
• Description: IC TX/RX RS232 230KBPS 16-SSOP
• Manufacturer: Maxim Integrated Products
• Type: Transceiverr

Specifications of MAX1406CAE

• Number Of Drivers/receivers: 3/3
• Protocol: RS232
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP
• Case: SSOP
• Dc: 01+
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

The transmitters are inverting level translators that con-
vert CMOS-logic input levels to an EIA/TIA-232 voltage
between ±5V and ±13.2V, into a load between 3k and
7k
with a worst-case load of 3k
compatibility with PC-to-PC communication software.
Figure 1. Slew-Rate Test Circuit and Timing Diagram
_______________Detailed Description
______________________________________________________________Pin Description
10, 12, 14
11, 13, 15
DRIVER
V
INPUT
3, 5, 7
2, 4, 6
OUT
GENERATOR
0V
PIN
16
1
8
9
The MAX1406 guarantees a 230kbps data rate
SIGNAL
3.0V
t
1.5V
PHL
t
t
F2
F1
R3OUT, R2OUT, R1OUT
T1OUT, T2OUT,T3OUT
_______________________________________________________________________________________
R1IN, R2IN, R3IN
T3IN, T2IN, T1IN
±15kV ESD-Protected, EMC-Compliant,
NAME
GND
-3.0V
-3.3V
V
V
3.3V
3.0V
V
DD
CC
SS
RS-232 Transmitters
and 1000pF, providing
t
PLH
R
t
t
L
R2
R1
Supply-Voltage Input, +10.8V to +13.2V
Transmitter Outputs, swing between V
Receiver Inputs
Supply-Voltage Input, -10.8V to -13.2V
Ground. Connect to system ground.
Transmitter Inputs. Tie unused inputs to GND or V
Receiver Outputs, swing between GND and V
Supply-Voltage Input, +4.5V to +5.5V
230kbps, 3-Tx/3-Rx RS-232 IC
C
L
V
V
0V
OH
OL
When the power is off, the MAX1406 outputs are permit-
ted to be driven up to ±15V. The transmitter inputs do
not have internal pull-up resistors. Connect unused
inputs to GND or V
The receiver inputs invert and convert the RS-232 sig-
nals to CMOS-logic output levels. The MAX1406 has
hysteresis of 650mV. The receiver output swings
between GND and V
As with all Maxim devices, electrostatic discharge
(ESD) protection structures are incorporated on all pins
to protect against ESD encountered during handling
and assembly. The MAX1406 driver outputs and receiv-
er inputs have extra protection against static electricity
found in normal operation. Maxim’s engineers devel-
oped state-of-the-art structures to protect these pins
against ±15kV ESD without damage. After an ESD
event, the MAX1406 continues working without latchup.
ESD protection can be tested in several ways. The
transmitter outputs and the receiver inputs are charac-
terized for protection to the following:
1) ±15kV using the Human Body Model
2) ±8kV using the Contact-Discharge method specified
3) ±15kV using the Air-Gap Discharge method speci-
ESD performance depends on a number of conditions.
Contact Maxim for a reliability report that documents
test setup, methodology, and results.
in IEC1000-4-2 (formerly IEC801-2)
fied in IEC1000-4-2 (formerly IEC801-2)
FUNCTION
DD
CC
and V
CC.
.
CC
SS
CC.
±15kV ESD Protection
ESD Test Conditions
RS-232 Receivers
5