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參數(shù)資料
| 型號(hào)： | SP4082EEN-L/TR |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 7/14頁 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS485/RS422 8NSOIC |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 收發(fā)器 |
| 驅(qū)動(dòng)器/接收器數(shù)： | 1/1 |
| 規(guī)程： | RS422/RS485 |
| 電源電壓： | 5V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SOICN |
| 包裝： | 帶卷 (TR) |
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (50)6687000 Fax (50)668-707 www.exar.com
SP4082E_00_22007
2
PIN ASSIGNMENTS
Pin Number Pin Name
Pin Function
RO
Receiver Output. When RE is low and if (A – B) ≥ -40mV, RO
is high. If (A – B) ≤ - 200mV, RO is low.
2
RE
REREE
Receiver Output Enable. When RE is low, RO is enabled.
When RE is high, RO is high impedance. Drive RE high and
DE low to enter shutdown mode.
3
DE
Driver Output Enable. When DE is high, outputs are enabled.
When DE is low, outputs are high impedance. Drive DE low
and RE high to enter shutdown mode.
4
DI
Driver Input. With DE high, a low level on DI forces non-
inverting output low and inverting output high. A high level on
DI forces non-inverting output high and inverting output low.
5
GND
Ground
6
A
Non-inverting Receiver Input and Non-inverting Driver Output
7
B
Inverting Receiver Input and Inverting Driver Output
8
Vcc
Positive Supply VCC. Bypass to GND with a 0.uF capacitor.
D
R
A
B
RO
GND
2
3
4
5
6
7
8
DE
VCC
RE
DI
8-Pin Half Duplex
DEVICE ARCHITECTURE AND BLOCK DIAGRAM
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