Datasheet

DocID9102 Rev 6 3/21
ST3485EB, ST3485EC Pin configuration
21
1 Pin configuration
Figure 1. Pin connections
Table 2. Pin description
Pin n° Symbol Name and function
1 RO Receiver output. If A > B by 200 mV, RO will be high; if A < B by 200 mV, 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.
8V
CC
Supply voltage: V
CC
= 3 V to 3.6 V.