MAX14841EATA+T Maxim Integrated Products, MAX14841EATA+T Datasheet

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MAX14841EATA+T

Manufacturer Part Number
MAX14841EATA+T
Description
IC TXRX RS485 40MBPS 8TDFN
Manufacturer
Maxim Integrated Products
Type
Transceiverr
Datasheet

Specifications of MAX14841EATA+T

Number Of Drivers/receivers
1/1
Protocol
RS485
Voltage - Supply
3 V ~ 3.6 V
Mounting Type
Surface Mount
Package / Case
8-TDFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
MAX14841EATA+T
19-5131; Rev 0; 2/10
The MAX14840E/MAX14841E are +3.3V ESD-protected
transceivers intended for half-duplex RS-485 communi-
cation up to 40Mbps. These transceivers are optimized
for high speeds over extended cable runs while maximiz-
ing tolerance to noise.
The MAX14840E features symmetrical fail-safe and larg-
er receiver hysteresis, providing improved noise rejec-
tion and improved recovered signals in high-speed and
long cable applications. The MAX14841E has true fail-
safe receiver inputs guaranteeing a logic-high receiver
output when inputs are shorted or open.
The MAX14840E/MAX14841E transceivers draw 1.5mA
(typ) supply current when unloaded or when fully loaded
with the drivers disabled. Hot-swap capability eliminates
undesired transitions on the bus during power-up or hot
insertion.
The MAX14840E/MAX14841E are available in 8-pin SO
and small, 8-pin (3mm x 3mm) TDFN-EP packages. Both
devices operate over the -40NC to +125NC automotive
temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
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.
MAX14840EASA+
MAX14841EASA+
MAX14840EATA+
MAX14841EATA+
Motion Controllers
Fieldbus Networks
Industrial Control Systems
Backplane Buses
HVAC Networks
PART
________________________________________________________________ _Maxim Integrated Products_ _ 1
General Description
40Mbps, +3.3V, RS-485 Half-Duplex
Applications
Symmetrical
Symmetrical
FAIL_SAFE
True
True
Ordering Information/Selector Guide
S
S
S
S
S
S
S
S
S
S
S
S
S
Half-Duplex_RS-485_Transceivers
+3.3V_Supply_Voltage
40Mbps_Maximum_Data_Rate
Large_(170mV)_Receiver_Hysteresis_on_
MAX14840E
Symmetrical_Fail-Safe_Receiver_Input_on_
MAX14840E
Fail-Safe_Receiver_Input_(MAX14841E)
Hot-Swap_Capability
Short-Circuit_Protected_Outputs
Thermal_Self-Protection
Low_10µA_(max)_Shutdown_Current
Extended_ESD_Protection_for_RS-485_I/O_Pins
Automotive_-40°C_to_+125°C_Operating_
Temperature_Range
Available_in_Industry-Standard_8-Pin_SO_or_
Space-Saving,_8-Pin_TDFN-EP_(3mm_x_3mm)_
Packages
-40NC to +125NC
-40NC to +125NC
-40NC to +125NC
-40NC to +125NC
±35kV_Human_Body_Model_(HBM)
±20kV_Air-Gap_Discharge_per_IEC_61000-4-2
±12kV_Contact_Discharge_per_IEC_61000-4-2
TEMP_RANGE
Transceivers
PIN-PACKAGE
8 TDFN-EP*
8 TDFN-EP*
8 SO
8 SO
Features

Related parts for MAX14841EATA+T

MAX14841EATA+T Summary of contents

Page 1

... Industrial Control Systems Backplane Buses HVAC Networks PART MAX14840EASA+ MAX14840EATA+ MAX14841EASA+ MAX14841EATA+ +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. ________________________________________________________________ _Maxim Integrated Products_ _ 1 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. Half-Duplex_RS-485_Transceivers S +3.3V_Supply_Voltage S 40Mbps_Maximum_Data_Rate S Large_(170mV)_Receiver_Hysteresis_on_ ...

Page 2

RS-485 Half-Duplex Transceivers ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND.) V ..................................................................... -0.3V to +6.0V CC RE, RO .................................................. -0.3V to +(V DE, DI .................................................................. -0.3V to +6. .................................................................... -8.0V to +13.0V Short-Circuit Duration (RO, A, ...

Page 3

RS-485 Half-Duplex DC ELECTRICAL CHARACTERISTICS (continued +3.0V to +3.6V -40NC to +125NC, unless otherwise noted. Typical values are PARAMETER SYMBOL Receiver Differential Threshold Voltage (MAX14840E Only) Receiver Input Hysteresis (MAX14840E ...

Page 4

RS-485 Half-Duplex Transceivers SWITCHING CHARACTERISTICS (continued +3.0V to +3.6V -40NC to +125NC, unless otherwise noted. Typical values are PARAMETER SYMBOL Maximum Data Rate DR Driver Enable to Output High Driver ...

Page 5

RS-485 Half-Duplex Figure 1. Driver DC Test Load 10 Figure 3. Driver Propagation Delays ...

Page 6

RS-485 Half-Duplex Transceivers OUT Figure 5. Driver Enable and Disable Times (t Figure 6. Receiver Propagation Delay Test Circuit Figure 7. Receiver Propagation Delays 6 ______________________________________________________________________________________ Test and ...

Page 7

RS-485 Half-Duplex +1.5V -1. RZH RHZ RO 0.25V Figure 8. Receiver Enable and Disable Times _______________________________________________________________________________________ Test and Timing Diagrams (continued 1kI ...

Page 8

RS-485 Half-Duplex Transceivers (V = +3.3V +25NC, unless otherwise noted NO-LOAD SUPPLY CURRENT vs. TEMPERATURE GND AND AND DE ...

Page 9

RS-485 Half-Duplex (V = +3.3V +25NC, unless otherwise noted DRIVER PROPAGATION DELAY vs. TEMPERATURE DPLH 15 t DPHL 54I 50pF -40 -15 ...

Page 10

RS-485 Half-Duplex Transceivers TOP VIEW *CONNECT EXPOSED PAD (EP) TO GND. PIN NAME 1 RO Receiver Output. See the Function Table. Active-Low Receiver-Output Enable. Drive RE low to enable RO high impedance when RE is high. ...

Page 11

RS-485 Half-Duplex INPUTS INPUTS INPUTS ...

Page 12

RS-485 Half-Duplex Transceivers Detailed Description The MAX14840E/MAX14841E are +3.3V ESD-protected RS-485 transceivers intended for high-speed, half-duplex communications. A hot-swap capability eliminates false transitions on the bus during power-up or hot insertion. The MAX14840E features symmetrical fail-safe and larg- ...

Page 13

RS-485 Half-Duplex How-Swap Input Circuitry The MAX14840E/MAX14841E DE and RE enable inputs feature hot-swap capability. At the input, there are two nMOS devices, M1 and M2 (Figure 10). When V ramps from 0V, an internal 15Fs timer turns ...

Page 14

RS-485 Half-Duplex Transceivers 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 11 shows the HBM, and ...

Page 15

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 2010 Maxim Integrated Products © ...

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