Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsInterface ICsInterface IC - transceivers RS485 1/1 TDFN 14 EP

AVAILABLE

Functional Diagrams

Pin Configurations appear at end of data sheet.

Functional Diagrams continued at end of data sheet.

UCSP is a trademark of Maxim Integrated Products, Inc.

For pricing, delivery, and

ordering information, please contact Maxim Direct

at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.

General Description

The MAX13430E–MAX13433E are full- and half-duplex

RS-485 transceivers that feature an adjustable low-volt-

age logic interface for operation in multivoltage systems.

This allows direct interfacing to low-voltage ASIC/FPGAs

without extra components. The MAX13430E–MAX13433E

RS-485 transceivers operate with a V

voltage supply

from +3V to +5V. The low-voltage logic interface operates

with a voltage supply from +1.62V to V

The MAX13430E/MAX13432E feature reduced slew-

rate drivers that minimize EMI and reduce reflections

caused by improperly terminated cables, allowing

error-free data transmission up to 500kbps. The

MAX13431E/MAX13433E driver slew rates are not limit-

ed, enabling data transmission up to 16Mbps. The

MAX13430E/MAX13431E are intended for half-duplex

communications, and the MAX13432E/MAX13433E are

intended for full-duplex communications.

The MAX13430E/MAX13431E are available in 10-pin

µMAX

and 10-pin TDFN packages. The MAX13432E/

MAX13433E are available in 14-pin TDFN and 14-pin

SO packages.

Features

♦ Wide +3V to +5V Input Supply Range

♦ Low-Voltage Logic Interface +1.62V (min)

♦ Ultra-Low Supply Current in Shutdown Mode

10µA I

(max), 1µA I

(max)

♦ Thermal Shutdown Protection

♦ Hot-Swap Input Structures on DE and RE

♦ 1/8-Unit Load Allows Up to 256 Transceivers on

the Bus

♦ Enhanced Slew-Rate Limiting

(MAX13430E/MAX13432E)

♦ Extended ESD Protection for RS-485 I/O Pins

±30kV Human Body Model

±15kV Air-Gap Discharge per IEC 61000-4-2

±10kV Contact Discharge per IEC 61000-4-2

♦ Extended -40°C to +85°C Operating Temperature

Range

♦ Space-Saving TDFN and µMAX Packages

RS-485 Transceivers with Low-Voltage

Logic Interface

Ordering Information/Selector Guide

PART PIN-PACKAGE

FULL/HALF

DUPLEX

DATA RATE

(Mbps)

SLEW RATE

LIMITED

TRANSCEIVERS

ON BUS

TOP

MARK

PACKAGE

CODE

MAX13430EETB+

10 TDFN-EP*

(3mm x 3mm)

Half 0.5 Yes 256 AUS T1033-1

MAX13430EEUB+

10 μMAX

(3mm x 3mm)

Half 0.5 Yes 256 — U10-2

MAX13431EETB+

10 TDFN-EP*

(3mm x 3mm)

Half 16 No 256 AUT T1033-1

MAX13431EEUB+

10 μMAX

(3mm x 3mm)

Half 16 No 256 — U10-2

MAX13432EESD+ 14 SO Full 0.5 Yes 256 — S14-1

MAX13432EETD+

14 TDFN-EP*

(3mm x 3mm)

Full 0.5 Yes 256 AEG T1433-2

MAX13433EESD+ 14 SO Full 16 No 256 — S14-1

MAX13433EESD/V+ 14 SO Full 16 No 256 — S14-1

MAX13433EETD+

14 TDFN-EP*

(3mm x 3mm)

Full 16 No 256 AEH T1433-2

Typical Application Circuits appears at end of data sheet.

Note: All devices are specified over the extended -40°C to +85°C operating temperature range.

Denotes a lead(Pb)-free/RoHS-compliant package.

EP = Exposed pad.

/V denotes an automotive qualified part.

µMAX is a registered trademark of Maxim Integrated Products, Inc.

Applications

Industrial Control Systems

Portable Industrial

Equipment

Motor Control

HVAC

MAX13430E–MAX13433E

19-4322; Rev 2; 5/10

Summary of content (20 pages)

PAGE 1
MAX13430E–MAX13433E LE AVAILAB RS-485 Transceivers with Low-Voltage Logic Interface General Description Features ♦ Wide +3V to +5V Input Supply Range The MAX13430E–MAX13433E are full- and half-duplex RS-485 transceivers that feature an adjustable low-voltage logic interface for operation in multivoltage systems. This allows direct interfacing to low-voltage ASIC/FPGAs without extra components. The MAX13430E–MAX13433E RS-485 transceivers operate with a VCC voltage supply from +3V to +5V.
PAGE 2
MAX13430E–MAX13433E RS-485 Transceivers with Low-Voltage Logic Interface ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) Supply Voltage (VCC) ...............................................-0.3V to +6V Logic Supply Voltage (VL ) ......................................-0.3V to +6V Control Input Voltage (RE) .............................-0.3V to (VL+0.3V) Control Input Voltage (DE) ......................................-0.3V to +6V Driver Input Voltage (DI) ..........................................
PAGE 3
MAX13430E–MAX13433E RS-485 Transceivers with Low-Voltage Logic Interface DC ELECTRICAL CHARACTERISTICS (continued) (VCC = +3V to +5.5V, VL = +1.8V to VCC, TA = -40°C to +85°C, unless otherwise noted. Typical values are VCC = +5V, VL = +1.8V at TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL Output Leakage Current (Y and Z) IOLK Driver Short-Circuit Output Current (Note 5) IOSD Driver Short-Circuit Output Foldback Current (Note 5) IOSDF CONDITIONS DE = GND, VCC = VGND or +5.
PAGE 4
MAX13430E–MAX13433E RS-485 Transceivers with Low-Voltage Logic Interface SWITCHING CHARACTERISTICS (MAX13431E/MAX13433E (16Mbps)) (VCC = +3V to +5.5V, VL = +1.8V to VCC, TA = -40°C to +85°C, unless otherwise noted. Typical values are VCC = +5V, VL = +1.8V at TA = +25°C.
PAGE 5
MAX13430E–MAX13433E RS-485 Transceivers with Low-Voltage Logic Interface SWITCHING CHARACTERISTICS (MAX13430E/MAX13432E (500kbps)) (VCC = +3V to +5.5V, VL = +1.8V to VCC, TA = -40°C to +85°C, unless otherwise noted. Typical values are VCC = +5V, VL = +1.8V at TA = +25°C.
PAGE 6
MAX13430E–MAX13433E RS-485 Transceivers with Low-Voltage Logic Interface SWITCHING CHARACTERISTICS (MAX13430E/MAX13432E (500kbps)) (continued) (VCC = +3V to +5.5V, VL = +1.8V to VCC, TA = -40°C to +85°C, unless otherwise noted. Typical values are VCC = +5V, VL = +1.8V at TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 50 340 700 ns DRIVER/RECEIVER Time to Shutdown tSHDN Note 2: Parameters are 100% production tested at TA = +25°C, unless otherwise noted.
PAGE 7
MAX13430E–MAX13433E RS-485 Transceivers with Low-Voltage Logic Interface Typical Operating Characteristics (continued) (VCC = +5V, VL = +5V, TA = +25°C, unless otherwise noted.) 2.5 2.0 1.5 VL = 5V 120 1.0 0 -15 10 35 60 100 80 60 40 20 0 -7 -6 -5 -4 -3 -2 -1 0 85 1 2 3 4 5 0 2 4 6 8 10 12 OUTPUT-HIGH VOLTAGE (V) OUTPUT-LOW VOLTAGE (V) SHUTDOWN CURRENT vs. TEMPERATURE DRIVER PROPAGATION vs. TEMPERATURE (MAX13432E) DRIVER PROPAGATION vs.
PAGE 8
MAX13430E–MAX13433E RS-485 Transceivers with Low-Voltage Logic Interface Test Circuits and Waveforms VL Y DE RL/2 Y VOD DI VOC RL/2 VOD D RL CL Z Z Figure 2. Driver Timing Test Circuit Figure 1. Driver DC Test Load VL DI VL/2 0 tDPLH tDPHL 1/2 VO Z VO Y 1/2 VO VO VDIFF 0 -VO VDIFF = V (Y) - V (Z) 10% 90% 90% 10% tF tR tSKEW = | tDPLH - tDPHL | Figure 3.
PAGE 9
MAX13430E–MAX13433E RS-485 Transceivers with Low-Voltage Logic Interface Test Circuits and Waveforms (continued) Y S1 D 0 OR VL OUT Z GENERATOR RL = 500Ω CL 50pF DE 50Ω VL DE VL/2 tDZH, tDZH(SHDN) 0 0.25V OUT VOH VOM = (0 + VOH)/2 0 tDHZ Figure 4. Driver Enable and Disable Times (tDHZ, tDZH, and tDZH(SHDN)) VCC Y 0 OR VL D OUT Z DE GENERATOR RL = 500Ω S1 CL 50pF 50Ω VL DE VL/2 tDZL, tDZL(SHDN) 0 tDLZ VCC VOM = (VOL + VCC)/2 OUT VOL 0.25V Figure 5.
PAGE 10
MAX13430E–MAX13433E RS-485 Transceivers with Low-Voltage Logic Interface Test Circuits and Waveforms (continued) B VID ATE R RECEIVER OUTPUT A +1V B -1V tRPLH VOH A VOL RO tRPHL VL/2 THE RISE TIME AND FALL TIME OF INPUTS A AND B < 4ns Figure 6. Receiver Propagation Delay Test Circuit Figure 7. Receiver Propagation Delays S1 +1.5V S3 -1.5V VID RO RR RE GENERATOR VL 1kΩ CL 15pF S2 50Ω S1 OPEN S2 CLOSED S3 = +1.5V S1 CLOSED S2 OPEN S3 = -1.
PAGE 11
MAX13430E–MAX13433E RS-485 Transceivers with Low-Voltage Logic Interface Pin Configurations TOP VIEW VCC B A N.C. GND VCC N.C. A B Z Y GND 10 9 8 7 6 14 13 12 11 10 9 8 MAX13430E MAX13431E MAX13432E MAX13434E EP + EP + 1 2 3 4 5 1 2 3 4 5 6 7 VL RO DE RE DI VL RO DE RE DI GND N.C. TDFN VL 1 RO 2 DE 3 RE DI + MAX13430E MAX13431E TDFN 10 VCC 9 B 8 A 4 7 N.C. 5 6 GND µMAX VL 1 RO 2 DE 3 RE + 14 VCC 13 N.C.
PAGE 12
MAX13430E–MAX13433E RS-485 Transceivers with Low-Voltage Logic Interface Pin Description PIN MAX13430E/MAX13431E 12 NAME FUNCTION µMAX TDFN 1 1 VL VL Input Logic-Supply Voltage. Bypass VL with a 0.1µF ceramic capacitor located as close as possible to the input. 2 2 RO Receiver Output. When RE is low and if (A - B) ≥ -50mV, RO is high; if (A - B) ≤ -200mV, RO is low. 3 3 DE Driver Output Enable. Drive DE high to enable driver outputs. These outputs are high impedance when DE is low.
PAGE 13
MAX13430E–MAX13433E RS-485 Transceivers with Low-Voltage Logic Interface Pin Description (continued) PIN MAX13432E/MAX13433E NAME FUNCTION SO TDFN 1 1 VL VL Input Logic Supply Voltage. Bypass VL with a 0.1µF ceramic capacitor located as close as possible to the input. 2 2 RO Receiver Output. When RE is low and if (A - B) ≥ -50mV, RO is high; if (A - B) ≤ -200mV, RO is low. 3 3 DE Driver Output Enable. Drive DE high to enable driver outputs. These outputs are high impedance when DE is low.
PAGE 14
MAX13430E–MAX13433E RS-485 Transceivers with Low-Voltage Logic Interface Function Tables and Functional Diagrams MAX13430E/MAX13431E (Half Duplex) MAX13432E/MAX13433E (Full Duplex) TRANSMITTING TRANSMITTING INPUTS OUTPUTS INPUTS OUTPUTS RE DE DI Z Y RE DE DI B A X 1 1 0 1 X 1 1 0 1 X 1 0 1 0 X 1 0 1 0 0 0 X HighImpedance HighImpedance 1 0 X HighImpedance HighImpedance 1 0 X 0 0 X Shutdown RECEIVING Shutdown* RECEIVING INPUTS OUTPUT INPUTS OUTPUT R
PAGE 15
MAX13430E–MAX13433E RS-485 Transceivers with Low-Voltage Logic Interface Detailed Description The MAX13430E–MAX13433E are full- and half-duplex RS-485 transceivers that feature an adjustable lowvoltage logic interface for application in multivoltage systems. This allows direct interfacing to lowvoltage ASIC/FPGAs without extra components. The MAX13430E–MAX13433E RS-485 transceivers operate with a VCC voltage supply from +3V to +5V. The lowvoltage logic interface operates with a voltage supply from +1.
PAGE 16
MAX13430E–MAX13433E RS-485 Transceivers with Low-Voltage Logic Interface ESD Test Conditions ESD performance depends on a variety of conditions. Contact Maxim for a reliability report that documents test setup, test methodology, and test results. Human Body Model Figure 10a shows the Human Body Model, and Figure 10b shows the current waveform it generates when discharged into a low impedance.
PAGE 17
MAX13430E–MAX13433E RS-485 Transceivers with Low-Voltage Logic Interface Applications Information 256 Transceivers on the Bus The standard RS-485 receiver input impedance is a one-unit load (12kΩ), and the standard driver can drive up to 32 unit loads. The MAX13430E family of transceivers has a 1/8-unit load receiver input impedance (96kΩ), allowing up to 256 transceivers to be connected in parallel on one communication line.
PAGE 18
MAX13430E–MAX13433E RS-485 Transceivers with Low-Voltage Logic Interface Typical Application Circuits 120Ω 120Ω DE B B DI D D DI DE A RO B A B A A RO R R RE RE R R D D MAX13430E MAX13431E DE DI DI RO RE DE RO RE Figure 11. Typical Half-Duplex RS-485 Network A R RO RE DE Y 120Ω 120Ω DI Z Z DI D B D B 120Ω R Y DE RE RO A Y Z B A Y Z R D DI B A R D DE RE RO DI MAX13432E MAX13433E DE RE RO Figure 12.
PAGE 19
MAX13430E–MAX13433E RS-485 Transceivers with Low-Voltage Logic Interface Chip Information PROCESS: BiCMOS Maxim Integrated Package Information For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
PAGE 20
MAX13430E–MAX13433E RS-485 Transceivers with Low-Voltage Logic Interface Revision History REVISION NUMBER REVISION DATE 0 10/08 Initial release — 1 5/09 Updated Ordering Information 1 2 5/10 Added an automotive temperature grade part to the Ordering Information 1 DESCRIPTION PAGES CHANGED Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.