The ZT485H 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.
The ZT485H series devices spans out with half or full duplex, data rate guaranteed at 250K bit per second or 10Mbps, and allow one-eighth of an unit load that fan out 256 devices sharing a common bus. The I/Os are enhanced-electrostatic discharge (ESD) protected, exceeding ±15kV Human Body Model (HBM).
ZT483H
Low Power 5V 250Kbps 256-Fanout RS485 Transceivers
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Overview
Features
● Meets or exceeds the requirements of ANSI Standard TIA/EIA-485-A and ISO 8482:1987(E) specifications for V cc 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, Short, Bus Idle) Receiver
● -7V to +12V common-mode input voltage range
● Half-Duplex mode configuration
● Allows up to 1/8 unit load (256 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)
● Alternative replacement for MAX308x, MAX1308x, SN75HVD308x, SN65HVD308x
● Standard fanout driving 1 unit load (32 devices) on the ZT485E Series
Target Applications
RS422/RS485 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
Industrial, security CATV and camera applications
Diagram
Download
- 01
Interface
ASIX IO-Link master/device software stacks and PCIe/USB to serial/parallel bridge solutions
- 02
UART Transceivers
5V/3V RS-232/RS-422/RS-485 UART transceivers solutions for industrial computers, embedded systems.
- 03
5V RS-232 Transceivers
- 04
3V RS-232 Transceivers
- 05
5V RS-485 Transceivers
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3V RS-485 Transceivers