MAX1482, MAX1483 20µA、1/8单位负载、限摆率、RS-485收发器

数据资料

完整的数据资料 (PDF, 604kB)
英文

概述

The MAX1482 and MAX1483 are low-power transceivers for RS-485 and RS-422 communication. Both feature slew-rate-limited drivers that minimize EMI and reduce reflections caused by improperly terminated cables. Data rates are guaranteed up to 250kbps.

The MAX1482/MAX1483 draw only 20µA of supply current. Additionally, they have a low-current shutdown mode that consumes only 0.1µA. Both parts operate from a single +5V supply.

Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if the input is open circuit.
The MAX1482 is full duplex and the MAX1483 is half duplex. Both parts have a 1/8-unit-load input impedance that guarantees up to 256 transceivers on the bus.

关键特性 应用/使用

Low 20µA Operating Current
Slew-Rate Limited for Reduced EMI and Reduced Reflections
0.1µA Low-Current Shutdown Mode
Designed for RS-485 and RS-422 Applications
Operate from a Single +5V Supply
-7V to +12V Common-Mode Input Voltage Range
Allows up to 256 Transceivers on the Bus—Guaranteed (1/8-unit load)
Current Limiting and Thermal Shutdown for Driver Overload Protection

工业控制局域网

大规模256节点LAN

低功耗RS-485/RS-422网络

用于EMI敏感应用的收发器

Key Specifications: RS-422/485 Line Driver/Receivers

Part Number

Number of Tx/Rx

Duplex

Supply Voltage (V)

Typ. I_CC (mA)

Data Rate (kbps)

Tx EN

Rx EN

Typ. Shutdown I_CC (µA)

Number of Rx/Tx on Bus

Rx Failsafe with Inputs:

Features

Slew Rate Limited

Min. Foot-
print (mm²)

RoHS Available

Operating Temp. Range (°C)

Price^*

MAX1482

1Tx + 1Rx

Full

0.02

250

Yes

0.1

256

Open

•	Low Power Shutdown

Yes

-40 to +85 0 to +70

$1.25 @ 1k

MAX1483

Half

$1.25 @ 1k

See All RS-422/485 Line Driver/Receivers (145)

Notes:
^*This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

图表

MAX1482,MAX1483:Typical Operating Circuit
典型工作电路