5V 供电，256 节点，12Mbps 全双工 RS485/RS422 收发器

SIT491E是一款4.5V~5.5V供电范围、全双工、可低功耗控制，完全满足TIA/EIA-485标准要求的RS485/RS422收发器。SIT491E包括一个驱动器和一个接收器，两者均可独立传输信号。SIT491E具有1/8负载，允许256个SIT491E收发器并接在同一通信总线上。可实现高达12Mbps的无差错数据传输。SIT491E工作电压范围为4.5V~5.5V，具备失效安全（fail-safe）、限流保护、过压保护，控制端口热插拔输入等功能。SIT491E具有优秀的ESD释放能力，HBM达到±15kV。

SUPER LOW NOISE InGaAs HEMT

DESCRIPTION The MGF491xG series super-low-noise HEMT(High Electron Mobility Transistor) is designed for use in L to Ku band amplifiers. The hermetically sealed metal-ceramic package assures minimumu parasitic losses, and has a configuration suitable for microstrip circuits. The MGF491*G series

MOSFET N-Ch, Enhancement Mode High Speed Switch

MOSFET N–Ch, Enhancement Mode High Speed Switch

NPN BISS transistor

DESCRIPTION NPN BISS (Breakthrough In Small Signal) transistor in a SOT23 plastic package. PNP complement: PMMT591A. FEATURES • High current (max. 1 A) • Low collector-emitter saturation voltage ensures reduced power consumption. APPLICATIONS • Battery powered units where high current and lo

NPN BISS transistor

DESCRIPTION NPN BISS (Breakthrough In Small Signal) transistor in a SOT23 plastic package. PNP complement: PMMT591A. FEATURES • High current (max. 1 A) • Low collector-emitter saturation voltage ensures reduced power consumption. APPLICATIONS • Battery powered units where high current and lo

LOW POWER HIGH SPEED RS-485/RS-422 TRANSCEIVER

DESCRIPTION The ST491A is a low power transceiver for RS-485 and RS-422 communications. The device contains one driver and one receiver in full duplex configuration. The ST491A draws 5mA (typ.) of supply current when unloaded and operates from a single 5V supply. ■ LOW SUPPLY CURRENT: 5mA MAX ■