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參數(shù)資料
型號: ADM2481BRWZ
廠商: Analog Devices Inc
文件頁數(shù): 18/20頁
文件大?。?/td> 0K
描述: IC TXRX ISOLATED RS-485 16SOIC
標準包裝: 47
系列: iCoupler®
類型: 收發(fā)器,隔離式
驅(qū)動器/接收器數(shù): 1/1
規(guī)程: RS422/RS485
電源電壓: 3.3V,5V
安裝類型: 表面貼裝
封裝/外殼: 16-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 16-SOIC W
包裝: 管件
Data Sheet
ADM2481
Rev. A | Page 7 of 20
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
NC = NO CONNECT
ADM2481
TOP VIEW
(Not to Scale)
VDD1 1
VDD2
16
GND11 2
GND21
15
RxD
3
NC
14
RE
4
B
13
DE
5
A
12
TxD
6
NC
11
GND11 7
GND21
10
GND11 8
GND21
9
1 PIN 2, PIN 7, AND PIN 8 MUST BE CONNECTED TO GND1.
PIN 9, PIN 10, AND PIN 15 MUST BE CONNECTED TO GND2.
08920-
002
Figure 2. Pin Configuration
Table 8. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
VDD1
Power Supply (Logic Side).
2, 7, 8
GND1
Ground (Logic Side).
3
RxD
Receiver Output Data. When enabled, if (A B) ≥ 30 mV, then RxD = high; if (A B) ≤ 200 mV, then
RxD = low. This is a tristate output when the receiver is disabled, that is, when RE is driven high.
4
RE
Receiver Enable Input. This is an active-low input. Driving this input low enables the receiver, and
driving it high disables the receiver.
5
DE
Driver Enable Input. Driving the input high enables the driver, and driving it low disables the driver.
6
TxD
Transmit Data Input. Data to be transmitted by the driver is applied to this input.
9, 10, 15
GND2
Ground (Bus Side).
11, 14
NC
No Connect.
12
A
Noninverting Driver Output/Receiver Input. When the driver is disabled, or when VDD1 or VDD2 is
powered down, Pin A is put into a high impedance state to avoid overloading the bus.
13
B
Inverting Driver Output/Receiver Input. When the driver is disabled, or when VDD1 or VDD2 is powered
down, Pin B is put into a high impedance state to avoid overloading the bus.
16
VDD2
Power Supply (Bus Side).
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