MAX3160E MAXIM [Maxim Integrated Products], MAX3160E Datasheet - Page 19

• Manufacturer Part Number: MAX3160E
• Description: +5kV ESD-Protected, +3.0V to +5.5V, 10nA, RS-232/RS-485/RS-422 Multiprotocol Transceivers
• Manufacturer: MAXIM [Maxim Integrated Products]

Figure 15. MAX3161E/MAX3162E RS-232 Loopback Test Result
at 250kbps, FAST = Low
The Typical Operating Circuit shows a standard appli-
cation for the MAX3160E. The MAX3160E’s outputs are
multiplexed between RS-232 and RS-485 protocols by
a microprocessor (µP). The µP also directs the shut-
down functions, enable lines, and the duplex of the
MAX3160E. Data is transmitted to the MAX3100 UART
through an SPI™ port. The UART asynchronously
transfers data through the MAX3160E to the pin-select-
ed RS-232 or RS-485 protocal. See Table 14 for com-
monly used cable connections.
SPI is a registered trademark of Motorola, Inc.
RS-232/RS-485/RS-422 Multiprotocol Transceivers
1µs/div
±15kV ESD-Protected, +3.0V to +5.5V, 10nA,
______________________________________________________________________________________
1µs/div
R
M
OUT
ultiprotocol Bus
R
T
T
5V/div
IN
OUT
OUT
The Typical Application Circuit shows the MAX3161E
configured as a multiprotocol bus multiplexer. The
MAX3161E separates the RS-232 and RS-485 lines, but
shares the logic pins between modes. This application
allows the µP to monitor a point-to-point RS-232 bus, and
a multidrop RS-485 interface. The MAX3100 UART asyn-
chronously transfers data through the MAX3161E to the
pin-selected RS-232 or RS-485 protocol.
Figure 16. MAX3161E/MAX3162E RS-232 Loopback Test Result
at 1Mbps, FAST = High
Multiprotocol Bus Multiplexer
200ns/div
T
T
5V/div
R
IN
OUT
OUT
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