19-3580; Rev 0; 2/05
1ꢀ5k EꢁDꢂ-rotected, +3.0k to +ꢀ.ꢀk, 10nA,
Rꢁꢂ232/Rꢁꢂ48ꢀ/Rꢁꢂ422 Multiprotocol Transceivers
General Description
Features
♦ Single Supply Operation from +3V to +5.5V
♦ ESD Protection
±±5ꢀV ꢁuman ꢂoꢃy ꢄoꢃel
The MAX3160E/MAX3161E/MAX3162E are programma-
ble RS-232/RS-485/RS-422 multiprotocol transceivers.
The MAX3160E/MAX3161E are pin programmable as a
2Tx/2Rx RS-232 interface or a single RS-485/RS-422
transceiver. The MAX3162E is configured as a 2Tx/2Rx
RS-232 interface, and a single RS-485/RS-422 trans-
ceiver simultaneously.
♦ Pin-Selectable as 2Tx/2Rx RS-232 or Single
RS-485/RS-422 (ꢄAX3±60E/ꢄAX3±6±E)
♦ 2Tx/2Rx RS-232 anꢃ Single RS-485/RS-422
(ꢄAX3±62E)
The MAX3160E/MAX3161E/MAX3162E feature enhanced
electrostatic discharge (ESD) protection. All of the trans-
mitter outputs and receiver inputs are protected to 15ꢀk
using the Human Body Model.
♦ Pin-Selectable RS-232/RS-485 Transmitter Slew
Rates Reꢃuce EꢄI
♦ ±0ꢄbps RS-485 anꢃ ±ꢄbps RS-232 Data Rates
♦ Pin-Selectable ꢁalf-Duplex or Full-Duplex
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-/RS-422-compliant perfor-
mance from a +3k to +5.5k supply. The receivers feature
true fail-safe circuitry that guarantees a logic-high receiv-
er output when the receiver inputs are open or shorted.
These devices also feature pin-selectable transmitter
slew rates for RS-232 and RS-485/RS-422 modes. Slew-
rate limiting minimizes EMI and reduces reflections
caused by improperly terminated cables, allowing error-
free data transmission up to 250ꢀbps. Disabling slew-rate
limiting allows these devices to transmit at data rates up
to 10Mbps in RS-485/RS-422 mode and up to 1Mbps in
RS-232 mode. The MAX3160E/MAX3161E/MAX3162E
feature a 10nA shutdown mode, short-circuit limiting, and
thermal shutdown circuitry to protect against excessive
power dissipation.
RS-485/RS-422 Operation (ꢄAX3±60E/ꢄAX3±6±E)
♦ RS-485/RS-422 True Fail-Safe Receivers
♦ ±0nA Shutꢃown Supply Current
♦ ±/8-Unit Loaꢃ Allows up to 256 Transceivers on
the ꢂus
Ordering Information
PIN-
PACKAGE
CODE
PART
TEꢄP RANGE PACKAGE
ꢄAX3±60ECAP
MAX3160EEAP
ꢄAX3±6±ECAG
0°C to +70°C 20 SSOP
-40°C to +85°C 20 SSOP
0°C to +70°C 24 SSOP
A20-2
A20-2
A24-3
A24-3
A28-1
MAX3161EEAG -40°C to +85°C 24 SSOP
ꢄAX3±62ECAI
0°C to +70°C 28 SSOP
-40°C to +85°C 28 SSOP
MAX3162EEAI
A28-1
The MAX3160E/MAX3162E offer a flow-through pin-
out that facilitates board layout. The MAX3160E/
MAX3161E/MAX3162E are available in tiny SSOP pacꢀ-
ages and operate over the commercial and extended
temperature ranges.
Typical Operating Circuit
+3V TO +5.5V
2
________________________Applications
V
CC
RS-485/RS232
11
5
Point-of-Sales Equipment
Peripherals
MAX3160E
DI/T1IN
Industrial Controls
Networꢀing
TX
13
Z(B)/T1OUT
16
RS-232 to RS-485
Interface Converters
Security Systems
RTS
DE485/T2IN Y(A)/T2OUT
6
11
15
8
DB9
MAX3100
RO/R2OUT
R1OUT
A/R2IN
B/R1IN
RX
13
12
CTS
10
7
14
GND FAST HDPLX SHDN
10
SPI
RJ45
4
9
12
µP
SHDN
Pin Configurations appear at end of data sheet.
Selector Guide appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products
±
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.