ZT491E数据手册ASIX中文资料规格书

描述 Description

The ZT485E series devices are 5V differential data line transceivers for RS485/RS422 communication that consist of one driver and one receiver with high level of ESD protection. They are designed for balanced transmission lines interface that meet ANSI standard TIA/EIA-485-A and ISO 8482:1987(E) specifications.

特性 Features

• Meets or exceeds the requirements of ANSI Standard TIA/EIA-485-A and ISO 8482:1987(E) specifications for Vcc at +5V ±10%
• Low quiescent current - 0.5mA typ., 1mA max
• Low shutdown current (where applicable) - 1μA typical, 10μA max
• Guaranteed standard data rate 250Kbps or 10Mbps
• True Fail-Safe (Open and Short) Receiver
• -7V to +12V common-mode input voltage range
• Half-Duplex or Full-Duplex configuration
• Allows up to 1 unit load (32 devices) on the same common bus
• Controlled driver output slew rate and receiver input filtering
• Active-high driver enable and active-low receiver enable
• ESD Protection on bus terminals
-- ±15kV Human Body Model (HBM)
• Drop-in Replacements for MAX483E, MAX485E, MAX488E, MAX489E, MAX490E, MAX491E
• High fanout driving 1/8 unit load (256 devices) available on the ZT485H Series

应用 Application

·RS-422/RS-485 communications
·Utility meters
·Industrial process control
·Building automation
·Level translators
·Transceivers for EMI-sensitive applications
·Routers and HUBs
·Industrial-controlled Local Area Networks
·Industrial PCs, embedded PCs and peripherals