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参数资料
| 型号： | LTC2858IMS-2#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 2/20页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS485/RS422 10-MSOP |
| 标准包装： | 50 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | RS422，RS485 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-MSOP |
| 包装： | 管件 |
| 产品目录页面： | 1355 (CN2011-ZH PDF) |
LTC2856-1/LTC2856-2
LTC2857-1/LTC2857-2
LTC2858-1/LTC2858-2
10
285678ff
For more information www.linear.com/LTC2856-1
pin FuncTions
PIN NAME
PIN NUMBER
DESCRIPTION
LTC2856-1
LTC2856-2
LTC2857-1
LTC2857-2
LTC2858-1
LTC2858-2
RO
1
2
1
Receiver Output. If the receiver output is enabled (RE low) and A > B by 200mV,
then RO will be high. If A < B by 200mV, then RO will be low. If the receiver
inputs are open, shorted or terminated without a valid signal, RO will be high.
RE
2
Receiver Enable. A low enables the receiver. A high input forces the receiver
output into a high impedance state.
DE
3
Driver Enable. A high on DE enables the driver. A low input will force the driver
outputs into a high impedance. If RE is high with DE low, the part will enter a
low power shutdown state.
DI
4
3
4
Driver Input. If the driver outputs are enabled (DE high), then a low on DI forces
the driver positive output low and negative output high. A high on DI, with
the driver outputs enabled, forces the driver positive output high and negative
output low.
GND
5/9*
4/9*
5/11*
Ground. *The Exposed Pad on the DFN packages should be connected to
ground.
Y
5
6
Noninverting Driver Output for the LTC2857-1, LTC2857-2, LTC2858-1 and
LTC2858-2. High impedance when the driver is disabled (LTC2858-1) or
unpowered.
Z
6
7
Inverting Driver Output for the LTC2857-1, LTC2857-2, LTC2858-1 and
LTC2858-2. High impedance when the driver is disabled (LTC2858-1) or
unpowered.
B
7
8
Inverting Receiver Input (and Inverting Driver Output for the LTC2856-1 and
LTC2856-2). Impedance is > 96k
Ω in receive mode or unpowered.
A
6
8
9
Noninverting Receiver Input (and Noninverting Driver Output for the LTC2856-1
and LTC2856-2). Impedance is > 96k
Ω in receive mode or unpowered.
VCC
8
1
10
Positive Supply. 4.5V < VCC < 5.5V. Bypass with a 0.1F ceramic capacitor.
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