Datasheet > LTC489

LTC489

更新时间： 2023-12-20 18:43:59

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
12页	131K
描述
四通道 RS485 线路接收器

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数据手册

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LTC489 数据手册

LTC488/LTC489

PIN FUNCTIONS

B 1 (Pin 1): Receiver 1 Input.

GND (Pin 8): Ground Connection.

A1 (Pin 2): Receiver 1 Input.

B3 (Pin 9): Receiver 3 Input.

RO1 (Pin 3): Receiver 1 Output. If the receiver output

is enabled, then if A > B by 200mV, RO1 will be high. If

A < B by 200mV, then RO1 will be low.

A3 (Pin 10): Receiver 3 Input.

RO3 (Pin 11): Receiver 3 Output. Refer to RO1.

EN (Pin 12) LTC488: Receiver Output Disabled. See Func-

tion Table for details.

EN(Pin4)LTC488:ReceiverOutputEnabled.SeeFunction

Table for details.

EN34 (Pin 12) LTC489: Receiver 3, Receiver 4 output

enabled. See Function Table for details.

EN12 (Pin 4) LTC489: Receiver 1, Receiver 2 Output

Enabled. See Function Table for details.

RO4 (Pin 13): Receiver 4 Output. Refer to RO1.

A4 (Pin 14): Receiver 4 Input.

RO2 (Pin 5): Receiver 2 Output. Refer to RO1.

A2 (Pin 6): Receiver 2 Input.

B4 (Pin 15): Receiver 4 Input.

B2 (Pin 7): Receiver 2 Input.

(Pin 16): Positive Supply; 4.75V ≤ V ≤ 5.25V.

FUNCTION TABLES

LTC488

LTC489

DIFFERENTIAL

ENABLES

OUTPUT

DIFFERENTIAL

A – B

ENABLES

OUTPUT

A – B

EN12 or EN34

≥ 0.2V

–0.2V < V < 0.2V

≤ 0.2V

H: High Level

L: Low Level

X: Irrelevant

?: Indeterminate

Z: High Impedance (Off)

4889fb

1 2 3 456 7 8...12

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