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參數(shù)資料
| 型號： | MAX14780EESA+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 1/14頁 |
| 文件大小： | 0K |
| 描述： | TRANSCEIVER RS-485/RS-422 8SO |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 系列： | * |
+5.0V, ±30kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceiver
MAX14780E
19-5652; Rev 2; 10/11
General Description
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 and PDIP
packages.
Applications
Utility Meters
Lighting Systems
Industrial Control
Telecom
Security Systems
Instrumentation
Profibus
Features
S
+5.0V Operation
S
Extended ESD Protection for RS-485/RS-422 I/O
Pins ±30kV Human Body Model
S
True Fail-Safe Receiver While Maintaining EIA/
TIA-485 Compatibility
S
Hot-Swap Input Structures on DE and RE
S
Enhanced Slew-Rate Limiting Facilitates Error-
Free Data Transmission
S
Low-Current Shutdown Mode
S
Allow Up to 256 Transceivers on the Bus
S
Available in Industry-Standard 8-Pin SO and PDIP
Packages
Ordering Information
+Denotes a lead(Pb)-free/RoHS-compliant package.
Typical Operating Circuit
Rt
DE
RE
A
B
A
B
0.1F
TYPICAL HALF-DUPLEX OPERATING CIRCUIT
+
R
D
RO
DI
VCC
GND
8
7
6
5
1
2
3
4
RE
DE
D
R
DI
RO
MAX14780E
PART
TEMP RANGE
PIN-PACKAGE
MAX14780EESA+
-40NC to +85NC
8 SO
MAX14780EEPA+
-40NC to +85NC
8 PDIP
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
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| MAX14783EASA+ | 制造商:Maxim Integrated Products 功能描述:HALF DUPLEX, DUAL VOLTAGE (3V TO 5.5V), HIGH ESD HBM (+/-35K - Rail/Tube 制造商:Maxim Integrated Products 功能描述:IC TXRX RS485/422 ESD 8SO |
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