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_______________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 I

and I

SS,

and less than 1mA for I

CC.

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

♦ Enhanced ESD Protection:

±15kV Human Body Model

±8kV IEC1000-4-2, Contact Discharge

±15kV IEC1000-4-2, Air-Gap Discharge

♦ Latchup Free During an ESD Event

♦ 16-Pin SSOP or SO Packages

♦ Guaranteed 230kbps Data Rate

♦ Flow-Through Pinout

♦ Pin Compatible with MC145406

MAX1406

±15kV ESD-Protected, EMC-Compliant,

230kbps, 3-Tx/3-Rx RS-232 IC

________________________________________________________________

Maxim Integrated Products

CC

R1OUT



T1IN

R2OUT

T2IN

R3OUT

T3IN



R1IN

T1OUT

R2IN

T2OUT

R3IN

T3OUT

TOP VIEW

MAX1406

DIP/SO/SSOP

GND

__________________Pin Configuration

________________Functional Diagram

19-1120; Rev 0; 9/96

PART

MAX1406CPE

MAX1406CWE

MAX1406CAE 0°C to +70°C

0°C to +70°C

TEMP. RANGE PIN-PACKAGE

16 Plastic DIP

16 Wide SO

16 SSOP

______________Ordering Information

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800

MAX1406C/D 0°C to +70°C Dice*

MAX1406EPE -40°C to +85°C 16 Plastic DIP

MAX1406EWE -40°C to +85°C 16 Wide SO

MAX1406EAE -40°C to +85°C 16 SSOP

*Dice are specified at T

= +25°C, DC parameters only.

+12V

0.1µF



R3OUT

R3IN

GND

R1OUT

R1IN

R2OUT

R2IN

T1IN T1OUT

T2IN

T2OUT

T3IN

T3OUT

-12V

+5V

0.1µF



0.1µF



MAX1406

Summary of content (8 pages)

PAGE 1
9-1120; Rev 0; 9/96 ±15kV ESD-Protected, EMC-Compliant, 230kbps, 3-Tx/3-Rx RS-232 IC 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.
PAGE 2
MAX1406 ±15kV ESD-Protected, EMC-Compliant, 230kbps, 3-Tx/3-Rx RS-232 IC ABSOLUTE MAXIMUM RATINGS VCC ...........................................................................-0.3V to +7V VDD .........................................................................-0.3V to +14V VSS..........................................................................+0.3V to -14V Input Voltages TIN .........................................................................-0.3V to +6V RIN ..............................
PAGE 3
±15kV ESD-Protected, EMC-Compliant, 230kbps, 3-Tx/3-Rx RS-232 IC (VCC = +4.5V to +5.5V, VDD = +10.8V to +13.2V, VSS = -10.8V to -13.2V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.
PAGE 4
__________________________________________Typical Operating Characteristics (VCC = +5.0V, VDD = +12.0V, VSS = -12.0V, TA = +25°C, unless otherwise noted.) ICC 0 1 TRANSMITTER AT DATA RATE 2 TRANMITTERS AT DATA RATE/16 3kΩ + 2500pF LOAD ISS, 20kbps -5 ISS, 120kbps -10 10 IDD, 20kbps 0 3kΩ + CL ICC 1 TRANSMITTER AT DATA RATE 2 TRANMITTERS AT DATA RATE/16 -5 -10 ISS, 20kbps -15 ISS, 120kbps -20 -20 10.8 11.4 12.0 12.6 2000 3000 4000 SLEW RATE vs.
PAGE 5
±15kV ESD-Protected, EMC-Compliant, 230kbps, 3-Tx/3-Rx RS-232 IC PIN NAME FUNCTION 1 VDD 3, 5, 7 T1OUT, T2OUT,T3OUT 2, 4, 6 R1IN, R2IN, R3IN 8 VSS Supply-Voltage Input, -10.8V to -13.2V 9 GND Ground. Connect to system ground. 10, 12, 14 T3IN, T2IN, T1IN 11, 13, 15 R3OUT, R2OUT, R1OUT 16 VCC Supply-Voltage Input, +10.8V to +13.2V Transmitter Outputs, swing between VDD and VSS Receiver Inputs Transmitter Inputs. Tie unused inputs to GND or VCC.
PAGE 6
Human Body Model Figure 2a shows the Human Body Model, and Figure 2b shows the current waveform it generates when discharged into a low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of interest, which is then discharged into the device through a 1.5kΩ resistor. IEC1000-4-2 The IEC1000-4-2 standard covers ESD testing and performance of finished equipment; it does not specifically refer to integrated circuits.
PAGE 7
±15kV ESD-Protected, EMC-Compliant, 230kbps, 3-Tx/3-Rx RS-232 IC Because the MAX1406 is not sensitive to power-supply sequencing, no external protection diodes are required. Any of the three supplies can power up first. However, use proper layout techniques to ensure other devices on your board are not damaged in case of an ESD event. • Minimize the ground-lead return path to the power supply, because currents as high as 60A can pass into the ground. • Use a separate return path to the power supply.
PAGE 8
MAX1406 ±15kV ESD-Protected, EMC-Compliant, 230kbps, 3-Tx/3-Rx, RS-232 IC ________________________________________________________Package Information D E DIM E1 A A1 A2 A3 B B1 C D1 E E1 e eA eB L A3 A A2 L A1 0° - 15° C e B1 eA B eB D1 Plastic DIP PLASTIC DUAL-IN-LINE PACKAGE (0.300 in.) INCHES MAX MIN 0.200 – – 0.015 0.175 0.125 0.080 0.055 0.022 0.016 0.065 0.045 0.012 0.008 0.080 0.005 0.325 0.300 0.310 0.240 – 0.100 – 0.300 0.400 – 0.150 0.115 PKG.