MAX13448E Maxim Integrated Products, MAX13448E Datasheet
MAX13448E
Manufacturer Part Number
MAX13448E
Description
80V Fault-Protected Full-Duplex RS-485 Transceiver
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX13448E.pdf
(14 pages)
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The MAX13448E full-duplex RS-485 transceiver fea-
tures inputs and outputs fault protected up to ±80V
(with respect to ground). The device operates from a
+3.0V to +5.5V supply and features true fail-safe cir-
cuitry, guaranteeing a logic-high receiver output when
the receiver inputs are open or shorted. This enables all
receiver outputs on a terminated bus to output logic-
high when all transmitters are disabled.
The MAX13448E features a slew-rate limited driver that
minimizes EMI and reduces reflections caused by
improperly terminated cables, allowing error-free data
transmission at data rates up to 500kbps with a +5V
supply, and 250kbps with a +3.3V supply.
The MAX13448E includes a hot-swap capability to elimi-
nate false transitions on the bus during power-up or hot
insertion. The driver and receiver feature active-high and
active-low enables, respectively, that can be connected
together externally to serve as a direction control.
The MAX13448E features an 1/8-unit load receiver input
impedance, allowing up to 256 transceivers on the bus.
All driver outputs are protected to ±8kV ESD using the
Human Body Model. The MAX13448E is available in a
14-pin SO package and operates over the extended
-40°C to +85°C temperature range.
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.
19-4098; Rev 0; 5/08
Industrial Control Systems
HVAC Control systems
Utility Meters
Motor Driver Control Systems
GND
GND
N.C.
RO
RE
DE
DI
1
2
3
4
5
6
7
+
________________________________________________________________ Maxim Integrated Products
General Description
SO
D
R
14
13
12
11
10
9
8
Applications
±80V Fault-Protected Full-Duplex
V
N.C.
A
B
Z
Y
N.C.
CC
MAX13448E
N.C.
RO
DI
1, 8,
13
5
2
3
4 14
RE
DE
D
R
V
CC
6, 7
GND
9
10
12
11
o ±80V Fault Protection on the RS-485 I/O Ports
o True Fail-Safe Receiver
o Hot-Swap Input Structure on DE
o ESD Protection on the RS-485 I/O Ports
o Slew-Rate Limiting Facilitates Error-Free Data
o 1/8-Unit Load Allows Up to 256 Transceivers on
o -7V to +12V Common-Mode Input Voltage Range
o +3.0V to +5.5V Operating Supply Voltage
o Available in 14-Pin SO Package
+ Denotes a lead-free package.
Pin Configuration appears at end of data sheet.
MAX13448EESD+
Transmission
the Bus
Y
Z
A
B
±8kV Human Body Model
1μF
PART
RS-485 Transceiver
R
t
-40°C to +85°C
TEMP RANGE
Ordering Information
Functional Diagram
R
t
GND
V
CC
R
DE
RE
D
PIN-PACKAGE
14 SO
Features
RO
DI
1
Datasheet pdf - http://www.DataSheet4U.net/
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