MAX14780EESA+ Maxim Integrated Products, MAX14780EESA+ Datasheet
MAX14780EESA+
Manufacturer Part Number
MAX14780EESA+
Description
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX14780EESA.pdf
(14 pages)
Specifications of MAX14780EESA+
Pack_quantity
100
Comm_code
85423990
Lead_time
49
19-5652; Rev 0; 12/10
The MAX14780E +5.0V, ±30kV ESD-protected, RS-485/
RS-422 transceiver features one driver and one receiver.
The device includes fail-safe circuitry, guaranteeing a
logic-high receiver output when receiver inputs are open
or shorted. The receiver outputs a logic-high if all trans-
mitters on a terminated bus are disabled (high imped-
ance). The MAX14780E includes a hot-swap capability
to eliminate false transitions on the bus during power-up
or hot insertion.
The MAX14780E features reduced slew-rate drivers that
minimize EMI and reduce reflections caused by improp-
erly terminated cables, allowing error-free data transmis-
sion up to 500kbps.
The MAX14780E is ideal for half-duplex communications
and it draws 1.2mA of supply current when unloaded
or when fully loaded with the drivers disabled. The
MAX14780E has a 1/8-unit load receiver input imped-
ance, allowing up to 256 transceivers on the bus.
The MAX14780E is available in an 8-pin SO package.
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.
Utility Meters
Lighting Systems
Industrial Control
Telecom
Security Systems
Instrumentation
Profibus
________________________________________________________________ _Maxim Integrated Products_ _ 1
+5.0V, ±30kV ESD-Protected, Fail-Safe,
General Description
Hot-Swap, RS-485/RS-422 Transceiver
RO
DE
RE
DI
1
4
2
3
+
D
R
Applications
8
7
6
5
TYPICAL HALF-DUPLEX OPERATING CIRCUIT
GND
V
CC
B
A
0.1µF
Rt
S
S
S
S
S
S
S
S
+Denotes a lead(Pb)-free/RoHS-compliant package.
MAX14780EESA+
MAX14780E
+5.0V_Operation
Extended_ESD_Protection_for_RS-485/RS-422_I/O_
Pins_±30kV_Human_Body_Model
True_Fail-Safe_Receiver_While_Maintaining_EIA/
TIA-485_Compatibility
Hot-Swap_Input_Structures_on_DE_and_RE
Enhanced_Slew-Rate_Limiting_Facilitates_Error-
Free_Data_Transmission
Low-Current_Shutdown_Mode
Allow_Up_to_256_Transceivers_on_the_Bus
Available_in_Industry-Standard_8-Pin_SO_Package
PART
B
A
Rt
Typical Operating Circuit
Ordering Information
-40NC to +85NC
TEMP_RANGE
R
D
DE
RE
DI
RO
PIN-PACKAGE
Features
8 SO
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