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PDF MAX1406CWE Data sheet ( Hoja de datos )

Número de pieza MAX1406CWE
Descripción 15kV ESD-Protected / EMC-Compliant / 230kbps / 3-Tx/3-Rx RS-232 IC
Fabricantes Maxim Integrated 
Logotipo Maxim Integrated Logotipo



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No Preview Available ! MAX1406CWE Hoja de datos, Descripción, Manual

19-1120; Rev 0; 9/96
±15kV ESD-Protected, EMC-Compliant,
230kbps, 3-Tx/3-Rx RS-232 IC
_______________General Description
The MAX1406 is an RS-232 IC designed to meet the
stringent electrostatic discharge (ESD) requirements of
the European community. All transmitter outputs and
receiver inputs are protected to ±15kV using IEC1000-4-2
Air-Gap Discharge, ±8kV using IEC 1000-4-2 Contact
Discharge, and ±15kV using the Human Body Model.
The MAX1406 has three RS-232 transmitters and three
RS-232 receivers, and is optimized for operation in
printer, modem, and telecom applications. It is guaran-
teed to run at data rates up to 230kbps, providing com-
patibility with popular software for communicating with
personal computers. Power-supply current is less than
500µA for IDD and ISS, and less than 1mA for ICC.
The MAX1406 is pin and functionally compatible with the
industry-standard MC145406, so existing designs can
instantly become Electromagnetic Compatibility (EMC)
compliant. The MAX1406 is available in DIP and SO pack-
ages, and in a tiny SSOP that reduces board space.
________________________Applications
Telecommunications
Modems
Printers
Instruments
Equipment Meeting IEC1000-4-2
____________________________Features
o Enhanced ESD Protection:
±15kV Human Body Model
±8kV IEC1000-4-2, Contact Discharge
±15kV IEC1000-4-2, Air-Gap Discharge
o Latchup Free During an ESD Event
o 16-Pin SSOP or SO Packages
o Guaranteed 230kbps Data Rate
o Flow-Through Pinout
o Pin Compatible with MC145406
______________Ordering Information
PART
MAX1406CPE
MAX1406CWE
MAX1406CAE
MAX1406C/D
MAX1406EPE
MAX1406EWE
MAX1406EAE
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
16 Plastic DIP
16 Wide SO
16 SSOP
Dice*
16 Plastic DIP
16 Wide SO
16 SSOP
*Dice are specified at TA = +25°C, DC parameters only.
________________Functional Diagram
+5V
0.1µF
__________________Pin Configuration
TOP VIEW
VDD 1
R1IN 2
T1OUT 3
R2IN 4
T2OUT 5
R3IN 6
T3OUT 7
VSS 8
MAX1406
16 VCC
15 R1OUT
14 T1IN
13 R2OUT
12 T2IN
11 R3OUT
10 T3IN
9 GND
DIP/SO/SSOP
+12V
0.1µF
VDD
T1IN
T2IN
T3IN
R1OUT
R2OUT
R3OUT
VCC
MAX1406
T1
T2
T3
R1
R2
R3
GND
VSS
T1OUT
T2OUT
T3OUT
R1IN
R2IN
R3IN
-12V
0.1µF
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800

1 page




MAX1406CWE pdf
±15kV ESD-Protected, EMC-Compliant,
230kbps, 3-Tx/3-Rx RS-232 IC
______________________________________________________________Pin Description
PIN
1
3, 5, 7
2, 4, 6
8
9
10, 12, 14
11, 13, 15
16
NAME
VDD
T1OUT, T2OUT,T3OUT
R1IN, R2IN, R3IN
VSS
GND
T3IN, T2IN, T1IN
R3OUT, R2OUT, R1OUT
VCC
FUNCTION
Supply-Voltage Input, +10.8V to +13.2V
Transmitter Outputs, swing between VDD and VSS
Receiver Inputs
Supply-Voltage Input, -10.8V to -13.2V
Ground. Connect to system ground.
Transmitter Inputs. Tie unused inputs to GND or VCC.
Receiver Outputs, swing between GND and VCC
Supply-Voltage Input, +4.5V to +5.5V
3.0V
DRIVER
INPUT
1.5V
0V
tPHL
VOUT
tF2
tF1
tPLH
3.3V
3.0V
-3.0V
-3.3V
tR2
tR1
VOH
0V
VOL
SIGNAL
GENERATOR
RL CL
Figure 1. Slew-Rate Test Circuit and Timing Diagram
_______________Detailed Description
RS-232 Transmitters
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 3kand
7kΩ. The MAX1406 guarantees a 230kbps data rate
with a worst-case load of 3kand 1000pF, providing
compatibility with PC-to-PC communication software.
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 VCC.
RS-232 Receivers
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 VCC.
±15kV ESD Protection
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
in IEC1000-4-2 (formerly IEC801-2)
3) ±15kV using the Air-Gap Discharge method speci-
fied in IEC1000-4-2 (formerly IEC801-2)
ESD Test Conditions
ESD performance depends on a number of conditions.
Contact Maxim for a reliability report that documents
test setup, methodology, and results.
_______________________________________________________________________________________ 5

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