ISL3280E数据手册集成电路（IC）的驱动器接收器收发器规格书PDF

描述 Description

The Intersil ISL3280E, ISL3281E, ISL3282E, ISL3283E, and  ISL3284E are ±16. 5kV IEC61000 ESD Protected, 3. 0V to 5. 5V powered, single receivers that meet both the RS-485 and RS-422 standards for balanced communication. These receivers have very low bus currents (+125µA/-100µA), so they present a true “1/8 unit load” to the RS-485 bus. This allows up to 256 receivers on the network without violating the RS-485 specification’s 32 unit load maximum and without using repeaters. Receiver inputs feature a “Full Fail-Safe” design, which ensures a logic high Rx output if Rx inputs are floating, shorted, or terminated but undriven. The ISL3280E and ISL3284E feature an always enabled Rx; the ISL3281E features an active-high Rx enable pin and the ISL3282E and ISL3283E include an active-low enable pin. All versions are offered in Industrial and Extended Industrial (-40°C to +125°C) temperature ranges. A 26% smaller footprint is available with the ISL3282E TDFN package. These devices, plus the ISL3284E, also feature a logic supply pin (VL) that sets the VOH level of the RO output (and the switching points of the RE/RE input) to be compatible with another supply voltage in mixed voltage systems. For companion single RS-485 transmitters in micro packages, please see the ISL3293E datasheet.

特性 Features

• IEC61000 ESD protection on RS-485 inputs: ±16.5kV
• Class 3 ESD level on all other pins: >5kV HBM
• Pb-free (RoHS compliant)
• Wide supply range: 3.0V to 5.5V
• Specified for +125°C operation
• Logic supply pin (VL) eases operation in mixed supply systems (ISL3282E, ISL3284E only)
• Full fail-safe (open, short, terminated/undriven)
• True 1/8 unit load allows up to 256 devices on the bus
• High data rates: up to 20Mbps
• Low quiescent supply current: 500µA (max)
• Very low shutdown supply current: 20µA (max)
• -7V to +12V common-mode input voltage range
• Tri-statable Rx available (active low or high EN input)
• 5V tolerant logic inputs when VCC ≤ 5V

应用 Application

• Clock Distribution
• High Node Count Systems
• Space Constrained Systems
• Security Camera Networks
• Building Environmental Control/Lighting Systems
• Industrial/Process Control Networks