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ST1480A Fiches technique(PDF) 3 Page - STMicroelectronics

No de pièce ST1480A
Description  3.3V Powered, 15KV ESD protected, Up to 12Mbps true RS-485/RS-422 transceiver
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

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ST1480A
Pin configuration
3/22
1
Pin configuration
Figure 1.
Pin connections
Table 1.
Pin description
Pin n°
Symbol
Name and function
1
RO
Receiver output. If A>B by 200mV, RO will be high; if A<B by 200mV, RO will be low
2RE
Receiver Output Enable. RO is enabled when RE is low; RO is high impedance when RE
is high. If RE is high and DE is low, the device will enter a low power shutdown mode.
3DE
Driver Output Enable. The driver outputs are enabled by bringing DE high. They are high
impedance when DE is low. If RE is high DE is low, the device will enter a low-power
shutdown mode. If the driver outputs are enabled, the part functions as line driver, while
they are high impedance, it functions as line receivers if RE is low.
4DI
Driver input. A low on DI forces output A low and output B high. Similarly, a high on DI
forces output A high and output B low
5
GND
Ground
6
A
Non-inverting receiver input and non-inverting driver output
7
B
Inverting receiver input and inverting driver output
8VCC
Supply voltage: VCC= 3V to 3.6V


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