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参数资料
| 型号： | SP3497EEN-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 11/17页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS485/RS422 ESD 14NSOIC |
| 标准包装： | 2,500 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | RS422/RS485 |
| 电源电压： | 3.3V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 14-SOIC（窄型） |
| 包装： | 带卷 (TR) |
SP3495E-3497E
3
REV. 1.0.0
HIGH SPEED +3.3V RS-485/RS-422 TRANSCEIVERS WITH +/-15KV ESD PROTECTION AND ADVANCED FAILSAFE
PIN DESCRIPTIONS
Pin type: I=Input, O=Output.
Pin Assignments
PIN NUMBER
PIN NAME
TYPE
DESCRIPTION
HALF DUPLEX
FULL DUPLEX
SP3495E
SP3496E
SP3497E
122
RO
O
Receiver Output. When RE is low and if (A-
B)
≥ -40mV, RO is High. If (A-B) ≤ -200mV,
RO is Low.
2-3
RE
I
Receiver Output Enable, When RE is Low,
RO is enabled. When RE is High, RO is
high impedance. RE should be High and
DE should be low to enter shutdown mode.
RE is a hot-swap input.
3-4
DE
I
Driver Output Enable. When DE is High,
outputs are enabled. When DE is low, out-
puts are high impedance. DE should be low
and RE should be High to enter shutdown
mode. DE is a hot-swap input
435
DI
I
Driver Input. With DE high, a low level on DI
forces Non-Inverting output low and invert-
ing output high. Similarly, a high level on DI
forces Non-Inverting output High and Invert-
ing output Low.
54
6, 7
GND
Pwr
Ground
6-
-
A
O
Non-Inverting Receiver Input and Non-
Inverting Driver Output
7-
-
B
O
Inverting Receiver Input and Inverting
Driver Output
81
14
Vcc
Pwr
+3.3V power supply input. Bypass with
0.1uF capacitor.
-
8
12
A
I
Non-Inverting Receiver Input
-
7
11
B
I
Inverting Reciever Input
-
5
9
Y
O
Non-Inverting Driver Output
-
6
10
Z
O
Inverting Driver Output
-
1, 8, 13
NC
-
No Connect, not internally connected
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