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| 型号： | MAX3160CAP+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/23页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS232/485/422 20SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 66 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 2/2 |
| 规程： | RS232，RS422，RS485 |
| 电源电压： | 3 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 20-SSOP |
| 包装： | 管件 |
| 产品目录页面： | 1404 (CN2011-ZH PDF) |
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 converters, multiprotocol buses, or any applica-
tion that requires both RS-232 and RS-485 transceivers.
The slew rate of these devices is on-the-fly pin pro-
grammable, allowing reduced EMI data rates, or up to
10Mbps RS-485 communications. Power consumption
can be reduced to 1A by using the shutdown function,
but the RS-232 receivers remain active allowing other
devices to query the interface controller. A flow-through
pinout and the space-saving SSOP packages (avail-
able in the commercial and extended temperature
ranges) facilitate board layout.
Device Selection
The MAX3160/MAX3161/MAX3162 contain RS-232
transceivers and an RS-485/422 transceiver. The pri-
mary difference between the devices is the multiplexing
of the I/O pins.
The MAX3160 has common transmitter outputs and
receiver inputs for its RS-232 and RS-485/422 trans-
ceivers, and common digital I/O pins. The MAX3160 is
optimized for multiprotocol operation on a single inter-
face bus and comes in a 20-pin SSOP.
The MAX3161 has separate transmitter outputs and
receiver inputs for its RS-232 and RS-485/422 trans-
ceivers, and common digital I/O pins. The MAX3161 is
optimized for multiplexing a single UART across two
interface buses and comes in a 24-pin SSOP.
The MAX3162 has separate transmitter outputs and
receiver inputs for its RS-232 and RS-485/422 trans-
ceivers, and separate digital I/O pins. The MAX3162 is
optimized for protocol translation between two interface
buses and comes in a 28-pin SSOP.
See Tables 1–12,
Functional Diagrams, and the follow-
ing descriptions for details on each device.
MAX3160
The MAX3160 is a 2TX/2RX RS-232 transceiver in RS-
232 mode, capable of RS-232-compliant communica-
tion. Assertion of RS-485/RS232 converts the device to
a single RS-485 transceiver by multiplexing the RS-232
I/O pins to an RS-485 driver and receiver pair. The
logic inputs now control the driver input and the driver
enable. One logic output carries the RS-485 receiver
output, and the other is three-stated. The receiver input
impedance is dependent on the device mode and is
1/4-unit load for RS-485 operation and 5k
Ω for RS-232
operation.
MAX3161
The MAX3161 is a 2TX/2RX RS-232 transceiver in RS-
232 mode or a single RS-485/422 transceiver in RS-485
mode. When in RS-485 mode, the unused RS-232
transmitter and receiver output pins are disabled. When
in RS-232 mode, the RS-485 transmitter outputs are
disabled and the RS-232 receiver inputs are 5k
Ω to
GND. The RS-485 receiver inputs are always 1/8-unit
load. Logic lines are shared between the two protocols
and are used for signal inputs and as an RS-485 driver
enable.
MAX3162
The MAX3162 is a 2TX/2RX RS-232 transceiver and a
single RS-485/422 transceiver simultaneously. All dri-
vers, receivers, and transmitters can be enabled or dis-
abled by pin configuration. All outputs are high-Z when
not activated. RS-232 receiver inputs are 5k
Ω when
enabled, and RS-485 receiver inputs are 1/8-unit load.
FAST Mode operation
The FAST control pin is used to select the slew-rate lim-
iting of the RS-232 transmitters and the RS-485/422 dri-
vers. With FAST unasserted, the RS-232 transmitters
and the RS-485/422 driver are slew-rate limited to
reduce EMI. RS-232 data rates up to 1Mbps and RS-
485/422 data rates up to 10Mbps are possible when
FAST is asserted. FAST can be changed during opera-
tion without interrupting data communications.
Half-Duplex RS-485/422 Operation
Asserting HDPLX places the MAX3160/MAX3161 in
half-duplex mode. The RS-485 receiver inputs are inter-
nally connected to the driver outputs. The RS-485 dri-
ver outputs can be disabled by pulling DE485 low.
HDPLX has no affect on RS-232 operation.
Low-Power Shutdown
The MAX3160/MAX3161/MAX3162 have an active-low
shutdown control input, SHDN. When driven low, the
charge pump and transmitters are shut down and sup-
ply current is reduced to 1A. The RS-232 receiver out-
puts remain active if in RS-232 mode. The charge-
pump capacitors must be recharged when coming out
of shutdown before resuming operation in either RS-232
or RS-485/422 mode (Figure 10).
Dual Charge-Pump Voltage Converter
The MAX3160/MAX3161/MAX3162s’ internal power
supply consists of a regulated dual charge pump that
provides output voltages of +5.5V (doubling charge
pump) and -5.5V (inverting charge pump) for input volt-
ages (VCC) over the 3.0V to 5.5V range. The charge
pumps operate in a discontinuous mode: if the magni-
tude of either output voltage is less than 5.5V, the
+3.0V to+5.5V, 1A, RS-232/RS-485/422
Multiprotocol Transceivers
14
Maxim Integrated
MAX3160/MAX3161/MAX3162
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相关代理商/技术参数 |
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|---|---|
| MAX3160CAP+ | 功能描述:RS-422/RS-485 接口 IC 3-5.5V 1uA Tcvr Multiprotocol RoHS:否 制造商:Maxim Integrated 数据速率:1136 Kbps 工作电源电压:3 V to 5.5 V 电源电流:5.9 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-28 封装:Tube |
| MAX3160CAP+T | 功能描述:RS-422/RS-485 接口 IC 3-5.5V 1uA Tcvr Multiprotocol RoHS:否 制造商:Maxim Integrated 数据速率:1136 Kbps 工作电源电压:3 V to 5.5 V 电源电流:5.9 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-28 封装:Tube |
| MAX3160CAP-T | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 数据速率:1136 Kbps 工作电源电压:3 V to 5.5 V 电源电流:5.9 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-28 封装:Tube |
| MAX3160EAP | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 数据速率:1136 Kbps 工作电源电压:3 V to 5.5 V 电源电流:5.9 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-28 封装:Tube |
| MAX3160EAP+ | 功能描述:RS-422/RS-485 接口 IC 3-5.5V 1uA Tcvr Multiprotocol RoHS:否 制造商:Maxim Integrated 数据速率:1136 Kbps 工作电源电压:3 V to 5.5 V 电源电流:5.9 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-28 封装:Tube |
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