Datasheet > STR485E

STR485E

更新时间： 2023-12-20 18:46:30

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		/
页数	文件大小	规格书
26页	1378K
描述
3.3V RS485，兼容1.8V I/O，可选择速度20Mbps或250kbps

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STR485E 数据手册

STR485E

Datasheet

3.3 V RS485 compatible with 1.8 V I/Os and selectable speed 20 Mbps or 250

kbps

Features

•

Half-duplex RS485 transceiver

1.65 V to 3.6 V supply for data and enable signals

3 V to 3.6 V supply for bus supply

DFN10 3 x 3

High speed: up to 20 Mbps data rate

Low speed selected by SLR pin : 250 kbps

Up to 128 transceivers on the bus @ 125 °C

Fail safe receiver (bus open, idle and shorted)

Thermal shutdown protection

Product status link

Low quiescent current in shutdown mode

Extended temperature range : -40 °C to +125 °C

Available in industry standard DFN10

Bus-pin protection more than:

STR485E

–

±4 kV HBM protection

±8 kV IEC61000-4-2 contact discharge

±16 kV IEC61000-4-2 air discharge

Compliant IEC61000-4-4 fast transient burst Class B

Description

The STR485E is a low power differential line transceiver for data transmission

standard RS485 applications in half-duplex mode. Data and enable signals are

compatible with 1.8 V or 3.3 V supplies.

Two speeds are selectable through SLR pin: fast data rate up to 20 Mbps or slow

data rate for extended cable running to 250 kbps.

Excessive power dissipation caused by bus contention or faults is prevented by

thermal shutdown circuit that forces the driver outputs into a high impedance state.

The receiver has a fail-safe feature, which guarantees a high output state when the

inputs are left open, shorted or idle.

DS13051 - Rev 4 - November 2023

www.st.com

For further information contact your local STMicroelectronics sales office.

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