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TOIM4232 Datasheet(数据表) 3 Page - Vishay Siliconix |
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TOIM4232 Datasheet(HTML) 3 Page - Vishay Siliconix |
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3 page 
TOIM4232 Document Number 82546 Rev. 1.5, 06-Jun-06 Vishay Semiconductors www.vishay.com 3 Block diagram of application circuit Operating the interface circuit at a PC COM - port. When operating directly with an UART with 3 V - or 5 V - logic, in the application circuit no level converter is necessary. Table 1. Recommended Application Circuit Components Absolute Maximum Ratings DC Characteristics VCC = 3.3 V ± 5 %, operating temperature = - 55 °C to + 125 °C 18081 DTR RTS TXD RXD RESET VCC_SD BR/D TD_IR TD_232 RD_IR RD_232 TOIM4232 VCC TXD RXD RS232 9 pin connector Level converter X1 X2 TFDU4100 TFDS420x TFDU4300 R1 100 k Ω C1 C2 3.6864 MHz 2x22pF Component Recommended Value Vishay Part Number C1 22 pF VJ 1206 A 220 J XAMT C2 22 pF VJ 1206 A 220 J XAMT R1 100 k Ω CRCW-1206-1003-F-RT1 Quartz Crystal 3.686400 MHz XT49S - 20 - 3.686400M Parameter Test Conditions Symbol Min Typ. Max Unit Supply voltage VCC - 0.5 3.6 V Input voltage all pins - 0.5 5.5 V Output voltage all pins - 0.5 VCC + 0.5 V Output sinking current, max all pins IO 8mA Junction temperature, max TJ 125 °C Ambient temperature (operating) Tamb - 25 85 °C Storage temperature Tstg - 25 85 °C Soldering temperature Tsldr 260 °C Parameter Test Conditions Symbol Min Typ. Max Unit Operating voltage VCC 2.7 3.3 3.6 V Parameter Test Conditions Symbol Min Typ. Max Unit Input HIGH voltage inputs tolerate levels as high as 5.5 V max. all inputs are Schmitt trigger inputs VIH 2.0 V Input LOW voltage VIL 0.8 V Input Schmitt trigger hysteresis Vhyst 0.6 V |
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