MAX3160_09 MAXIM [Maxim Integrated Products], MAX3160_09 Datasheet

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MAX3160_09

Manufacturer Part Number
MAX3160_09
Description
+3.0V to+5.5V, 1?A, RS-232/RS-485/422 Multiprotocol Transceivers
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet
1.MAX3160_09.pdf (23 pages)
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.
19-1722; Rev 2; 12/09
+ Denotes a lead(Pb)-free/RoHS-compliant package.
Pin Configurations appear at end of data sheet.
Selector Guide appears at end of data sheet.
________________________Applications
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.
MAX3160CAP+
MAX3160EAP+
MAX3161CAG+
MAX3161EAG+
MAX3162CAI+
MAX3162EAI+
Point-of-Sales Equipment
Industrial Controls
RS-232 to RS-485
Interface Converters
PART
________________________________________________________________ Maxim Integrated Products
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
+3.0V to+5.5V, 1µA, RS-232/RS-485/422
Ordering Information
General Description
Peripherals
Networking
PIN-PACKAGE
20 SSOP
20 SSOP
24 SSOP
24 SSOP
28 SSOP
28 SSOP
Multiprotocol Transceivers
♦ Single-Supply Operation from +3V to +5.5V
♦ Pin-Programmable as 2TX/2RX RS-232 or Single
♦ 2TX/2RX RS-232 and Single RS-485/422
♦ Pin-Programmable RS-232/RS-485 Transmitter
♦ 10Mbps RS-485 and 1Mbps RS-232 Data Rates
♦ Pin-Programmable Half-Duplex or Full-Duplex
♦ RS-485/422 True Fail-Safe Receivers
♦ Transmitters and Receivers Protected Against
♦ 1μA Shutdown Supply Current
♦ 1/8-Unit Load Allows up to 256 Transceivers on
RS-485/422 (MAX3160/MAX3161)
(MAX3162)
Slew Rates Reduce EMI
RS-485/422 Operation (MAX3160/MAX3161)
Wiring Faults
the Bus
MAX3100
μP
SPI
11
12
13
10
SHDN
CTS
RX
TX
RTS
RO/R2OUT
DE/T2IN
DI/T1IN
R1OUT
16
15
Typical Operating Circuit
7
8
GND FAST HDPLX SHDN
4
+3V TO +5.5V
MAX3160
10
V
CC
RS485/RS232
1
12
9
11
13
14
5
Y(A)/T2OUT
A/R2IN
B/R1IN
Z(B)/T1OUT
6
Features
RJ45
DB9
1

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MAX3160_09 Summary of contents

Page 1

Rev 2; 12/09 +3.0V to+5.5V, 1µA, RS-232/RS-485/422 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 ...

Page 2

RS-232/RS-485/422 Multiprotocol Transceivers ABSOLUTE MAXIMUM RATINGS V to GND. .............................................................-0. GND ................................................................-0. GND....................................................................0. (Note 1)....................................................................+13V Input Voltages T1IN, T2IN, DI, DE485, RE485, TE232, ...

Page 3

RS-232/RS-485/422 ELECTRICAL CHARACTERISTICS (continued +3V to +5.5V, C1–C4 = 0.1µF when tested at +3.3V ±10 0.047µF and C2, C3 0.33µF when tested at +5V±10 ...

Page 4

RS-232/RS-485/422 Multiprotocol Transceivers ELECTRICAL CHARACTERISTICS (continued +3V to +5.5V, C1–C4 = 0.1µF when tested at +3.3V ±10 0.047µF and C2, C3 0.33µF when tested at +5V±10 ...

Page 5

RS-232/RS-485/422 ELECTRICAL CHARACTERISTICS (continued +3V to +5.5V, C1–C4 = 0.1µF when tested at +3.3V ±10 0.047µF and C2, C3 0.33µF when tested at +5V±10 ...

Page 6

RS-232/RS-485/422 Multiprotocol Transceivers (V = +3.3V, 250kbps data rate, 0.1µF capacitors, all RS-232 transmitters (RS-232 mode) loaded with 3kΩ to ground unless otherwise noted.) RS-232 TRANSMITTER SLEW RATE vs. LOAD CAPACITANCE (FAST = V ) ...

Page 7

RS-232/RS-485/422 (V = +3.3V, 250kbps data rate, 0.1µF capacitors, all RS-232 transmitters (RS-232 mode) loaded with 3kΩ to ground unless otherwise noted.) OUTPUT CURRENT vs. RECEIVER OUTPUT HIGH VOLTAGE ...

Page 8

RS-232/RS-485/422 Multiprotocol Transceivers PIN MAX3160 MAX3161 — — — — — — — — — — — ...

Page 9

RS-232/RS-485/422 PIN MAX3160 MAX3161 MAX3162 13 — 14 — — — — — — — — — — — — — ...

Page 10

RS-232/RS-485/422 Multiprotocol Transceivers RS-232 MODE CHARGE PUMP C1 BYPASS GND RS-232 OUTPUTS LOGIC OUTPUTS SHDN 10 FAST ...

Page 11

RS-232/RS-485/422 RS-232 MODE CHARGE PUMP C1 BYPASS GND 4 T1 RS-232 5 OUTPUT RS-232 8 OUTPUT R1 9 LOGIC OUTPUTS ...

Page 12

RS-232/RS-485/422 Multiprotocol Transceivers Functional Diagrams (continued) MAX3162 CHARGE PUMP C1 BYPASS GND 4 RS-232 5 OUTPUT Z 6 RS-485 D OUTPUTS Y 7 RS-232 8 OUTPUT R1 ...

Page 13

RS-232/RS-485/422 500Ω OUTPUT UNDER TEST C L Figure 4. RS-485/422 Driver Enable/Disable Timing Test Load 3V DE485 1. DZL Y, Z 2.3V OUTPUT NORMALLY LOW V OL OUTPUT NORMALLY HIGH ...

Page 14

RS-232/RS-485/422 Multiprotocol Transceivers Detailed Description The MAX3160/MAX3161/MAX3162 3V/5V, multiprotocol transceivers can be pin configured in a number of RS- 232 and RS-485/422 interface combinations. These cir- cuit configurations are ideal for the design of RS-232 to RS-485 ...

Page 15

RS-232/RS-485/422 charge pumps are enabled; if the magnitude of both output voltages exceeds 5.5V, the charge pumps are disabled. Each charge pump requires a flying capaci- tor (C1, C2) and a reservoir capacitor (C3, C4) to gen- ...

Page 16

RS-232/RS-485/422 Multiprotocol Transceivers RS-232 Transmitters Table 1. MAX3160 INPUTS RS485 DI/T1IN, SHDN DE485/T2IN ...

Page 17

RS-232/RS-485/422 Table 7. MAX3160 INPUTS SHDN RS485 Table ...

Page 18

RS-232/RS-485/422 Multiprotocol Transceivers Table 11. MAX3161 SHDN RS485/RS232 Table 12. MAX3162 INPUTS SHDN RE485 ...

Page 19

RS-232/RS-485/422 MAX 3160-2 FIG10 40μs/div Figure 10. MAX3160 RS-232 Transmitter Outputs When Exiting Shutdown BYPASS V CC C1+ C1 C1- C2+ MAX3160 MAX3161 C2 C2- MAX3162 T_ OUT OUT 5k V ...

Page 20

RS-232/RS-485/422 Multiprotocol Transceivers A 120Ω RE485 DE485 120Ω NOTE: RE485 ON MAX3162 ONLY Figure 14. RS-485 Line Repeater transfers data through the MAX3160 to the pin-selected RS-232 or RS-485 protocal; ...

Page 21

RS-232/RS-485/422 Table 14. Cable Connections Commonly Used for EIA/TIA-232 and V.24 Asynchronous Interfaces EIA/TIA-232 CONNECTOR STANDARD PIN DCD DTR DSR 6 RTS 7 CTS MAX3100 UART ...

Page 22

RS-232/RS-485/422 Multiprotocol Transceivers TOP VIEW + C1 C2 C2- GND MAX3160 Z(B)/T1OUT 5 16 DI/T1IN Y(A)/T2OUT 6 15 DE485/T2IN R1OUT 7 14 B/R1IN RO/R2OUT ...

Page 23

RS-232/RS-485/422 REVISION REVISION NUMBER DATE Corrected the “Continuous Power Dissipation” specifications under the Absolute Maximum Ratings. 2 12/09 Changed pin labels in the Functional Diagrams. Deleted “TRANSISTOR COUNT: 1580” and added “PROCESS: BiCMOS” to the Chip Information. ...

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