19-6016; Rev 0; 10/11
+5.0V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceiver
Features
The MAX13085E +5.0V, ±15kV 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
transmitters on a terminated bus are disabled (high
impedance). The MAX13085E includes a hot-swap
capability to eliminate false transitions on the bus during
power-up or hot insertion.
S +5.0V Operation
The MAX13085E features reduced slew-rate drivers
that minimize EMI and reduce reflections caused by
improperly terminated cables, allowing error-free data
transmission up to 500kbps.
S Low-Current Shutdown Mode
The MAX13085E 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
MAX13085E has a 1/8-unit load receiver input impedance, allowing up to 256 transceivers on the bus.
S Extended ESD Protection for RS-485/RS-422 I/O
Pins ±15kV 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 ErrorFree Data Transmission
S Allow Up to 256 Transceivers on the Bus
S Available in Industry-Standard 8-Pin SO and PDIP
Packages
The MAX13085E is available in an 8-pin SO and PDIP
packages.
Ordering Information
Applications
Utility Meters
PART
Lighting Systems
TEMP RANGE
MAX13085EESA+
Industrial Control
PIN-PACKAGE
-40NC to +85NC
8 SO
+Denotes a lead(Pb)-free/RoHS-compliant package.
Telecom
Security Systems
Instrumentation
Profibus
Typical Operating Circuit
0.1µF
RO
RE
DE
DI
1
+
R
8
2
D
B
6
4
D
5
DE
VCC
7
3
MAX13085E
A
Rt
DI
B
Rt
A
GND
RO
R
RE
TYPICAL HALF-DUPLEX OPERATING CIRCUIT
________________________________________________________________ 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.
MAX13085E
General Description
