The LTC490IS8#PBF is an integrated circuit (IC) component manufactured by Linear Technology, now part of Analog Devices Inc. This IC is a low power, high-speed single bus driver and receiver designed to interface data coded in the RS485 or RS422 format with TTL or CMOS logic.
The LTC490IS8#PBF offers several key features that make it suitable for a wide range of applications. Firstly, it can operate in harsh environments due to its ability to withstand ±60V on bus pins while powered down or under fault conditions. This makes it suitable for industrial and automotive applications where voltage spikes are common.
To ensure reliable data transmission, the LTC490IS8#PBF provides slew rate-limited drivers that reduce electromagnetic interference (EMI) and offer failsafe operation. It features full-duplex or half-duplex communication modes and can operate at data rates up to 250kbps. The IC also incorporates a proprietary circuit that allows the driver outputs to be disabled, reducing power consumption when the bus is idle.
Additionally, the LTC490IS8#PBF includes thermal shutdown protection circuitry, preventing damage due to excessive temperatures. It operates from a single 5V supply, making it convenient to integrate with other TTL or CMOS devices. The IC comes in an 8-pin SOIC package, which allows for ease of integration on circuit boards
