VDD1 1 GN" />
參數(shù)資料
型號: EVAL-ADM2491EEBZ
廠商: Analog Devices Inc
文件頁數(shù): 14/16頁
文件大?。?/td> 0K
描述: BOARD EVAL FOR ADM2491
標(biāo)準(zhǔn)包裝: 1
主要目的: 接口,收發(fā)器,RS-485
已用 IC / 零件: ADM2491
已供物品:
ADM2491E
Rev. B | Page 7 of 16
PIN CONFIGURATION AND FUNCTIONAL DESCRIPTIONS
VDD1 1
GND1 2
RxD
3
RE
4
VDD2
16
GND2
15
A
14
B
13
DE
5
Z
12
TxD
6
Y
11
NC
7
NC
10
GND1 8
GND2
9
NC = NO CONNECT
ADM2491E
TOP VIEW
(Not to Scale)
06985-
002
Figure 2. ADM2491E Pin Configuration
Table 8. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
V
DD1
Power Supply (Logic Side). Decoupling capacitor to GND
1 required; capacitor value should be between
0.01 F and 0.1 F.
2, 8
GND
1
Ground (Logic Side).
3
RxD
Receiver Output.
4
RE
Receiver Enable Input. Active low logic input. When this pin is low, the receiver is enabled; when high, the
receiver is disabled.
5
DE
Driver Enable Input. Active high logic input. When this pin is high, the driver (transmitter) is enabled;
when low, the driver is disabled.
6
TxD
Transmit Data.
7, 10
NC
No Connect. This pin must be left floating.
9, 15
GND
2
Ground (Bus Side).
11
Y
Driver Noninverting Output.
12
Z
Driver Inverting Output.
13
B
Receiver Inverting Input.
14
A
Receiver Noninverting Input.
16
V
DD2
Power Supply (Bus Side). Decoupling capacitor to GND
2 is required; capacitor value should be between
0.01 F and 0.1 F.
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