Figure 2. Typical application schematic

B

B

A

A

GND

GND

VCC

D

D

DE

DE

R

R

RE

RE

VL

SLR

RT

120 Ω

RT

120 Ω

3.3 V

1.8 V

VCC

3.3 V

VL

SLR

1.8 V

Figure 3. Example of implementation in a PCB

Adding an ESDA14V2BP6 or ETP01-2821 ST Microelectronics protection device can help the product to sustain

an EFT perturbation level up to 4 kV.

STR485E

Pin connections

DS13051 - Rev 3

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