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| 型号： | MAX3471EUA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/8页 |
| 文件大小： | 0K |
| 描述： | IC TXRX DIFF RS485/422 8-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | RS422，RS485 |
| 电源电压： | 2.5 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 管件 |
| 产品目录页面： | 1407 (CN2011-ZH PDF) |
_______________Detailed Description
The MAX3471 half-duplex transceiver consumes only
1.6A from a single +3.6V supply. Its wide 2.5V to 5.5V
supply voltage guarantees operation over the lifetime of
a lithium battery. This device contains one driver and
one receiver. Its true fail-safe receiver input guarantees
a logic-high receiver output when the receiver inputs
are open or shorted, or when they are connected to a
terminated transmission line with all drivers disabled.
Reduced-slew-rate drivers minimize EMI and reduce
reflections caused by improperly terminated cables,
allowing error-free data transmission up to 64kbps.
Receiver Input Filtering
The MAX3471 receiver operates at up to 64kbps and
incorporates input filtering in addition to input hystere-
sis. This filtering enhances noise immunity when differ-
ential signals have very slow rise and fall times.
The MAX3471 guarantees a logic-high receiver output
when the receiver inputs are shorted or open, or when
they are connected to a terminated transmission line
with all drivers disabled. This is accomplished by set-
ting the receiver threshold between -50mV and
-450mV. If the differential receiver input voltage (A-B) is
greater than or equal to -50mV, RO is a logic high. If
A-B is less than or equal to -450mV, RO is a logic low.
In the case of a terminated bus with all transmitters dis-
abled, the receiver’s differential input voltage is pulled
to 0V by the termination. With the MAX3471’s receiver
thresholds, this results in a logic high with a 50mV mini-
mum noise margin.
MAX3471
1.6A, RS-485/RS-422, Half-Duplex,
Differential Transceiver for Battery-Powered Systems
6
_______________________________________________________________________________________
______________________________________________________________Pin Description
RECEIVER PROPAGATION DELAY
MAX3471toc17
B
DI
(2V/div)
A-B
(2V/div)
RO
(2V/div)
A
1
s/div
DRIVER PROPAGATION DELAY
MAX3471toc18
B
DI
(2V/div)
A-B
(1V/div)
A
400ns/div
R = 1.5k
, CL = 100pF
Ground
GND
5
Noninverting Driver Output and Noninverting Receiver Input
A
6
Inverting Driver Output and Inverting Receiver Input
B
7
Positive Supply: +2.5V
≤ VCC ≤ +5.5V
VCC
8
Driver Input. With DE high, a low on DI forces the noninverting output low and the inverting output high.
Similarly, a high on DI forces the noninverting output high and the inverting output low.
DI
4
Driver Output Enable. Drive DE high to enable the driver outputs. These outputs are high impedance when
DE is low.
DE
3
PIN
Receiver Output Enable. Drive RE low to enable RO; RO is high impedance when RE is high.
RE
2
Receiver Output. When RE is low, if A - B
≥ -50mV, RO will be high; if A - B ≤ -450mV, RO will be low.
RO
1
FUNCTION
NAME
Typical Operating Characteristics (continued)
(VCC = +3.6V, TA = +25°C, unless otherwise noted.)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX3471EUA+ | 功能描述:RS-422/RS-485 接口 IC 1.6uA Half Duplex Differential Tcvr 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 |
| MAX3471EUA+T | 功能描述:RS-422/RS-485 接口 IC 1.6uA Half Duplex Differential Tcvr 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 |
| MAX3471EUA-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 |
| MAX3480ACPI | 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 |
| MAX3480ACPI+ | 功能描述:RS-422/RS-485 接口 IC 3.3V Data Interface 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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