MAX3160_09 Datasheet, PDF (1/23 Pages) Maxim Integrated Products – +3.0V to+5.5V, 1μA, RS-232/RS-485/422 Multiprotocol Transceivers

19-1722; Rev 2; 12/09
EVAALVUAAILTAIOBNLEKIT
+3.0V to+5.5V, 1µA, RS-232/RS-485/422
Multiprotocol Transceivers
General Description
The MAX3160/MAX3161/MAX3162 are programmable
RS-232/RS-485/422 multiprotocol transceivers. The
MAX3160/MAX3161 are pin programmable as a 2TX/2RX
RS-232 interface or a single RS-485/422 transceiver. The
MAX3162 is configured as a 2TX/2RX RS-232 interface
and a single RS-485/422 transceiver simultaneously.
All devices incorporate a proprietary low-dropout trans-
mitter output stage and an on-board dual charge pump
to allow RS-232 and RS-485/422 compliant perfor-
mance from a +3V to +5.5V supply. The receivers
feature true fail-safe circuitry that guarantees a logic-
high receiver output when the receiver inputs are open
or shorted. These devices also feature pin-selectable
transmitter slew rates for both RS-232 and RS-485/422
modes. Slew-rate limiting minimizes EMI and reduces
reflections caused by improperly terminated cables,
allowing error-free data transmission up to 250kbps.
Disabling slew-rate limiting allows these devices to
transmit at data rates up to 10Mbps in RS-485/422
mode and up to 1Mbps in RS-232 mode. The
MAX3160/MAX3161/MAX3162 feature a 1µA shutdown
mode, and short-circuit limiting and thermal shutdown
circuitry to protect against excessive power dissipation.
The MAX3160/MAX3162 offer a flow-through pinout that
facilitates board layout. The MAX3160/MAX3161/
MAX3162 are available in tiny SSOP packages and
operate over the commercial and extended tempera-
ture ranges.
________________________Applications
Point-of-Sales Equipment Peripherals
Industrial Controls
Networking
RS-232 to RS-485
Interface Converters
Ordering Information
PART
MAX3160CAP+
MAX3160EAP+
MAX3161CAG+
MAX3161EAG+
MAX3162CAI+
TEMP RANGE
0°C to +70°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
0°C to +70°C
PIN-PACKAGE
20 SSOP
20 SSOP
24 SSOP
24 SSOP
28 SSOP
MAX3162EAI+
-40°C to +85°C 28 SSOP
+Denotes a lead(Pb)-free/RoHS-compliant package.
Features
♦ Single-Supply Operation from +3V to +5.5V
♦ Pin-Programmable as 2TX/2RX RS-232 or Single
RS-485/422 (MAX3160/MAX3161)
♦ 2TX/2RX RS-232 and Single RS-485/422
(MAX3162)
♦ Pin-Programmable RS-232/RS-485 Transmitter
Slew Rates Reduce EMI
♦ 10Mbps RS-485 and 1Mbps RS-232 Data Rates
♦ Pin-Programmable Half-Duplex or Full-Duplex
RS-485/422 Operation (MAX3160/MAX3161)
♦ RS-485/422 True Fail-Safe Receivers
♦ Transmitters and Receivers Protected Against
Wiring Faults
♦ 1μA Shutdown Supply Current
♦ 1/8-Unit Load Allows up to 256 Transceivers on
the Bus
Typical Operating Circuit
+3V TO +5.5V
1
VCC
RS485/RS232 ₁₁
TX ^DI/T1IN
Z(B)/T1OUT
13
16
RTS DE/T2IN
MAX3160
5
Y(A)/T2OUT
MAX3100
11
RX
15
RO/R2OUT
6
A/R2IN
12
8
CTS _R1OUT
13
B/R1IN
10
7
14
GND FAST HDPLX SHDN
SPI
4 10 12 9
DB9
RJ45
SHDN
μP
Pin Configurations appear at end of data sheet.
Selector Guide appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
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