General Description
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 VCCvoltage supply
from +3V to +5V. The low-voltage logic interface operates
with a voltage supply from +1.62V to VCC.
The MAX13430E/MAX13432E feature reduced slewrate 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 limited, 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 ICC(max), 1µA IL(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
MAX13430E–MAX13433E
RS-485 Transceivers with Low-Voltage
Logic Interface
________________________________________________________________
Maxim Integrated Products
1
Ordering Information/Selector Guide
19-4322; Rev 2; 5/10
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
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
MAX13431E ETB+
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
MAX13432E ESD+ 14 SO Ful l 0.5 Yes 256 — S14-1
MAX13432EETD+
14 TDFN-EP*
(3mm x 3mm)
Ful l 0.5 Yes 256 AEG T1433-2
MAX13433E ESD+ 14 SO Ful l 16 No 256 — S14-1
MAX13433EESD/V+ 14 SO Ful l 16 No 256 — S14-1
MAX13433EETD+
14 TDFN-EP*
(3mm x 3mm)
Ful l 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
RS-485 Transceivers with Low-Voltage
Logic Interface
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(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
T
A
= +25°C.) (Notes 2, 3)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial
.
(All voltages referenced to GND.)
Supply Voltage (V
CC
) ...............................................-0.3V to +6V
Logic Supply Voltage (V
L )
......................................-0.3V to +6V
Control Input Voltage (RE) .............................-0.3V to (V
L
+0.3V)
Control Input Voltage (DE) ......................................-0.3V to +6V
Driver Input Voltage (DI) ..........................................-0.3V to +6V
Driver Output Voltage (Y, Z, A, B) ............................-8V to +13V
Receiver Input Voltage (A, B)
(MAX13430E/MAX13431E)....................................-8V to +13V
Receiver Input Voltage (A, B)
(MAX13432E/MAX13433E)..................................-25V to +25V
Receiver Output Voltage (RO) .....................-0.3V to (V
L
+ 0.3V)
Driver Output Current ....................................................±250mA
Short-Circuit Duration (RO, A, B) to GND .................Continuous
Power Dissipation (T
A
= +70°C)
10-Pin µMAX (derate 8.8mW/°C above +70°C) ..........707mW
10-Pin TDFN (derate 24.4mW/°C above +70°C) ......1951mW
14-Pin TDFN (derate 24.4mW/°C above +70°C) ......1951mW
14-Pin SO (derate 11.9mW/°C above +70°C) .............952mW
Junction-to-Ambient Thermal Resistance (θ
JA
) (Note 1)
10-Pin µMAX ...........................................................113.1°C/W
10-Pin TDFN.................................................................41°C/W
14-Pin TDFN ................................................................41°C/W
14-Pin SO ....................................................................84°C/W
Junction-to-Ambient Thermal Resistance (θ
JC
) (Note 1)
10-Pin µMAX ................................................................42°C/W
10-Pin TDFN...................................................................9°C/W
14-Pin TDFN ..................................................................8°C/W
14-Pin SO ....................................................................34°C/W
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature..................................................... +150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
POWER SUPPLY
VCC Supply-Voltage Range V
VL Supply-Voltage Range V
ICC Supply Current I
ICC Supply Current in Shutdown
Mode
VL Supply Current I
DRIVER
Differential Driver Output
(Figure 1)
Change in Magnitude of
Differential Output Voltage
Driver Common-Mode Output
Voltage
Change in Magnitude of
Common-Mode Voltage
I
SHDN
V
Δ V
V
Δ V
CC
CC
OD
OC
L
DE = RE = high, no load
DE = RE = low, no load
DE = high, RE = low, no load
DE = low, RE = high, no load 10 µA
RO = no load 1 µA
L
RL = 100Ω , VCC = +3V 2 V
RL = 54Ω , VCC = +3V 1.5 V
RL = 100Ω , VCC = +4.5V 2.25 V
RL = 54Ω , VCC = +4.5V 2.25 V
RL = 100Ω or 54Ω , Figure 1 (Note 4) 0.2 V
OD
RL = 100Ω or 54Ω , Figure 1 VCC/2 3 V
RL = 100Ω or 54Ω , Figure 1 (Note 4) 0.2 V
OC
3 5.5 V
1.62 V
CC
2m A
CC
CC
CC
CC
V
V
MAX13430E–MAX13433E
RS-485 Transceivers with Low-Voltage
Logic Interface
_______________________________________________________________________________________ 3
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
T
A
= +25°C.) (Notes 2, 3)
Output Leakage Current
(Y and Z)
Driver Short-Circuit Output
Current (Note 5)
Driver Short-Circuit Output
Foldback Current (Note 5)
Thermal Shutdown Threshold T
Thermal Shutdown Hysteresis T
RECEIVER
Input Current (A and B) I
Receiver Differential Threshold
Voltage
Receiver Input Hysteresis ΔV
Receiver Input Resistance R
LOGIC INTERFACE
Input High Logic Level
(DI, DE, RE)
Input Low Logic Level
(DI, DE, RE)
Input Current (DI, DE, RE )I
Input Impedance on First
Transition
Output High Logic Level (RO) V
Output Low Logic Level (RO) V
Receiver Three-State Output
Current (RO)
Receiver Output Short-Circuit
Current (RO)
ESD PROTECTION
All Other Pins
(Except A, B, Y, and Z)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
I
OLK
I
OSD
I
OSDF
A, B
V
V
V
R
DE, RE
I
OZR
I
OSR
TS
TSH
TH
TH
IN
IH
IL
IN
OH
OL
DE = GND,
= V
V
CC
0 ≤ V
-7V ≤ V
(VCC - 1V) ≤ V
-7V ≤ V
or +5.5V
GND
≤ +12V +250
OUT
≤ V
OUT
CC
≤ +12V 15
OUT
≤ +1V -15
OUT
DE = GND,
= V
V
CC
GND
or +5.5V
-7V ≤ VCM ≤ +12V -200 -50 mV
VCM = 0 15 mV
-7V ≤ VCM ≤ +12V 96 kΩ
VDI = VDE = VRE = VL = +5.5V ±1 µA
IO = -1mA, VA - VB = V
IO = 1mA, VA - VB = -V
0 ≤ VRO ≤ V
0 ≤ VRO ≤ V
L
L
VIN = +12V 125
V
= -7V -100
IN
-250
+150 °C
15 °C
VCM = +12V 125
V
= -7V -100
CM
2/3 x
V
L
11 0 kΩ
TH
TH
VL - 0.4 V
-1 0.01 +1 µA
-110 +110 mA
1/3 x
V
L
0.4 V
µA
mA
mA
µA
V
V
IEC 61000-4-2 Air Gap Discharge ±15
IEC 61000-4-2 Contact Discharge ±10 A, B, Y, Z to GND
kV
Human Body Model ±30
Human Body Model ±2 kV
MAX13430E–MAX13433E
RS-485 Transceivers with Low-Voltage
Logic Interface
4 _______________________________________________________________________________________
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
T
A
= +25°C.) (Notes 2, 3)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DRIVER
t
Driver Propagation Delay
(Figures 2 and 3)
Driver Differential Output Rise or
Fall Time
Differential Driver Output Skew
|t
- t
DPHL
|
DPLH
Maximum Data Rate 16 Mbps
Driver Enable to Output High t
Driver Enable to Output Low t
Driver Disable Time from Low t
Driver Disable Time from High t
Driver Enable from Shutdown
to Output High
Driver Enable from Shutdown
to Output Low
RECEIVER
Receiver Propagation Delay
(Figures 6 and 7)
Receiver Output Skew t
Maximum Data Rate 16 Mbps
Receiver Enable to Output Low t
Receiver Enable to Output High t
Receiver Disable Time from Low t
Receiver Disable Time from High t
Receiver Enable from
Shutdown to Output High
Receiver Enable from
Shutdown to Output Low
DRIVER/RECEIVER
Time to Shutdown t
DPLH
t
DPHL
t
, t
R
F
t
DSKEW
DZH
DZL
DLZ
DHZ
t
DZH(SHDN
t
DZL(SHDN
t
RPLH
t
RPHL
RSKEW
RZL
RZH
RLZ
RHZ
t
RZH(SHDN
t
RZL(SHDN
SHDN
CL = 50pF, R
CL = 50pF, RL = 54Ω , Figures 2 and 3 15 ns
CL = 50pF, RL = 54Ω , Figures 2 and 3 8 ns
CL = 50pF, RL = 500Ω , Figure 4 150 ns
CL = 50pF, RL = 500Ω , Figure 5 150 ns
CL = 50pF, RL = 500Ω , Figure 4 100 ns
CL = 50pF, RL = 500Ω , Figure 5 120 ns
CL = 50pF, RL = 500Ω , Figure 4 5 µs
CL = 50pF, RL = 500Ω , Figure 5 5 µs
CL = 15pF
CL = 15pF, Figures 6 and 7 13 ns
Figure 8 50 ns
Figure 8 50 ns
Figure 8 50 ns
Figure 8 50 ns
Figure 8 5 µs
Figure 8 5 µs
DIFF
= 54Ω
50 340 700 ns
50
50
80
80
ns
ns
MAX13430E–MAX13433E
RS-485 Transceivers with Low-Voltage
Logic Interface
_______________________________________________________________________________________ 5
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
T
A
= +25°C.) (Notes 2, 3)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DRIVER
t
Driver Propagation Delay
(Figures 2 and 3)
Driver Differential Output Rise or
Fall Time
Differential Driver Output Skew
|t
- t
DPHL
|
DPLH
Maximum Data Rate 500 kbps
Driver Enable to Output High t
Driver Enable to Output Low t
Driver Disable Time from Low t
Driver Disable Time from High t
Driver Enable from Shutdown
to Output High
Driver Enable from Shutdown
to Output Low
RECEIVER
Receiver Propagation Delay
(Figures 6 and 7)
Receiver Output Skew t
Maximum Data Rate 500 kbps
Receiver Enable to
Output Low
Receiver Enable to
Output High
Receiver Disable Time
from Low
Receiver Disable Time
from High
Receiver Enable from
Shutdown to Output High
Receiver Enable from
Shutdown to Output Low
DPLH
t
DPHL
t
, t
R
F
t
DSKEW
DZH
DZL
DLZ
DHZ
t
DZH(SHDN
t
DZL(SHDN
t
RPLH
t
RPHL
RSKEW
t
RZL
t
RZH
t
RLZ
t
RHZ
t
RZH(SHDN
t
RZL(SHDN
CL = 50pF, RL = 54Ω
CL = 50pF, RL = 54Ω , Figures 2 and 3 200 800 ns
CL = 50pF, RL = 54Ω , Figures 2 and 3 100 ns
CL = 50pF, RL = 500Ω , Figure 4 2.5 µs
CL = 50pF, RL = 500Ω , Figure 5 2.5 µs
CL = 50pF, RL = 500Ω , Figure 4 100 ns
CL = 50pF, RL = 500Ω , Figure 5 120 ns
CL = 50pF, RL = 500Ω , Figure 4 5 µs
CL = 50pF, RL = 500Ω , Figure 5 5 µs
CL = 15pF
CL = 15pF, Figures 6 and 7 30 ns
Figure 8 50 ns
Figure 8 50 ns
Figure 8 50 ns
Figure 8 50 ns
Figure 8 5 µs
Figure 8 5 µs
180 800
180 800
200
200
ns
ns
MAX13430E–MAX13433E
RS-485 Transceivers with Low-Voltage
Logic Interface
6 _______________________________________________________________________________________
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
T
A
= +25°C.) (Notes 2, 3)
Note 2: Parameters are 100% production tested at TA= +25°C, unless otherwise noted. Limits over temperature are guaranteed by
design.
Note 3: All currents into the device are positive. All currents out of the device are negative. All voltages are referenced to device
ground, unless otherwise noted.
Note 4: ΔV
OD
and ΔV OCare the changes in VODand VOC, respectively, when the DI input changes state.
Note 5: The short-circuit output current is the peak current just prior to current limiting; the short-circuit foldback output current
applies during current limiting to allow a recovery from bus contention.
Typical Operating Characteriststics
(V
CC
= +5V, VL = +5V, TA = +25°C, unless otherwise noted.)
OUTPUT CURRENT vs. RECEIVER
OUTPUT-HIGH VOLTAGE
MAX13430E-3E toc02
OUTPUT-HIGH VOLTAGE, VOH (V)
OUTPUT CURRENT FOR V
L
= 5V (mA)
OUTPUT CURRENT FOR V
L
= 1.8V (mA)
2 13 4
20
40
60
0
30
50
10
2
4
6
0
3
5
1
05
VL = 1.8V
VL = 5V
OUTPUT CURRENT vs. RECEIVER
OUTPUT-LOW VOLTAGE
MAX13430E-3E toc03
OUTPUT-LOW VOLTAGE, VOL (V)
OUTPUT CURRENT FOR V
L
= 5V (mA)
OUTPUT CURRENT FOR V
L
= 1.8V (mA)
2 13 4
80
0
40
60
20
8
0
4
6
2
05
VL = 1.8V
VL = 5V
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DRIVER/RECEIVER
Time to Shutdown t
SHDN
50 340 700 ns
VCC SUPPLY CURRENT vs. TEMPERATURE
100
DE = HIGH, MAX13433E
DE = HIGH, MAX13432E
10
MAX13430E-3E toc01
SUPPLY CURRENT (mA)
CC
V
6.0
(V)
OH
5.5
= 5V, V
L
5.0
4.5
OUTPUT-HIGH VOLTAGE FOR V
4.0
DE = LOW, MAX13433E
1
= 54Ω
R
DIFF
DI = RE = LOW
0
-40 85
DE = LOW, MAX13432E VL = 5V
10 -15 35 60
TEMPERATURE (° C)
RECEIVER OUTPUT-HIGH
VOLTAGE vs. TEMPERATURE
IO = 1mA
-40 85
10 -15 35 60
TEMPERATURE (° C)
VL = 5V
VL = 1.8V
MAX13430E-3E toc04
2.0
1.9
1.8
1.7
1.6
0.5
(V)
OH
0.4
(V)
OL
= 1.8V, V
L
0.3
0.2
OUTPUT-LOW VOLTAGE, V
0.1
OUTPUT-LOW VOLTAGE FOR V
0
-40 85
RECEIVER OUTPUT-LOW VOLTAGE
vs. TEMPERATURE
IO = 1mA
VL = 5V
TEMPERATURE (° C)
VL = 1.8V
10 -15 35 60
MAX13430E-3E toc05
DIFFERENTIAL OUTPUT CURRENT
vs. DIFFERENTIAL OUTPUT VOLTAGE
140
VL = 5V
120
100
80
60
OUTPUT CURRENT (mA)
40
20
0
05
2 13 4
OUTPUT VOLTAGE (V)
MAX13430E-3E toc06