LTC489ISWPBF

更新时间： 2024-11-01 13:09:51

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凌特 - Linear		/
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数据手册

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LTC489ISWPBF 数据手册

LTC488/LTC489

Quad RS485 Line Receiver

EATURE

DESCRIPTIO

■

Low Power: I_CC= 7mA Typ

Designed for RS485 or RS422 Applications

Single 5V Supply

–7V to 12V Bus Common Mode Range Permits ±7V

Ground Difference Between Devices on the Bus

60mV Typical Input Hysteresis

Receiver Maintains High Impedance in Three-State or

with the Power Off

The LTC^®488 and LTC489 are low power differential bus/

line receivers designed for multipoint data transmission

standardRS485applicationswithextendedcommonmode

range (12V to –7V). They also meet the requirements of

RS422.

■

TheCMOSdesignofferssignificantpowersavingsoverits

bipolarcounterpartwithoutsacrificingruggednessagainst

overload or ESD damage.

■

28ns Typical Receiver Propagation Delay

Pin Compatible with the SN75173 (LTC488)

Pin Compatible with the SN75175 (LTC489)

Thereceiverfeaturesthree-stateoutputs,withthereceiver

output maintaining high impedance over the entire com-

mon mode range.

O U

The receiver has a fail-safe feature which guarantees a

high output state when the inputs are left open.

PPLICATI

■

Low Power RS485/RS422 Receivers

Level Translator

Both AC and DC specifications are guaranteed 4.75V to

5.25V supply voltage range.

■

, LTC and LT are registered trademarks of Linear Technology Corporation.

TYPICAL APPLICATI

DRIVER

1/4 LTC486

RECEIVER

1/4 LTC488

120Ω

4000 FT 24 GAUGE TWISTED PAIR

EN12

DRIVER

1/4 LTC487

RECEIVER

1/4 LTC489

120Ω

4000 FT 24 GAUGE TWISTED PAIR

LTC488/9 TA01

12 3 4 5 6 7...12

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