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SN75LBC776 - 产品图解:
SN75LBC776-单片 GeoPort(TM) 收发器
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TI产品 - SN75LBC776介绍
SN75LBC776 - 单片 GeoPort(TM) 收发器

SN75LBC776是TI公司的一款其它线电路产品,SN75LBC776是单片 GeoPort(TM) 收发器,本页介绍了SN75LBC776的产品说明、应用、特性等,并给出了与SN75LBC776相关的TI元器件型号供参考。

SN75LBC776 - 单片 GeoPort(TM) 收发器 - 其它线电路 - 其它接口 - TI公司(Texas Instruments,德州仪器)

产品描述

The SN75LBC776 is a low-power LinBiCMOS device that incorporates the drivers and receivers for a 9-pin GeoPort host interface. GeoPort combines hybrid EIA/TIA-422-B and EIA/TIA-423-B drivers and receivers to transmit data up to four megabits per second (Mbit/s) full duplex. GeoPort is a serial communications standard that is intended to replace the RS-232, Appletalk, and LocalTalk printer ports all in one connector in addition to providing real-time data transfer capability. It provides point-to-point connections between GeoPort-compatible devices with data transmission rates up to 4 Mbit/s full duplex and a hot-plug feature. Applications include connection to telephony, integrated services digital network (ISDN), digital sound and imaging, fax-data modems, and other serial and parallel connections. The GeoPort is backwardly compatible to both LocalTalk and AppleTalk.

While the SN75LBC776 is powered-off (VCC = 0) the outputs are in a high-impedance state. When the shutdown (SHDN) terminal is high, the charge pump is powered down and the outputs are in a high-impedance state. The driver enable (DEN)\ terminal sends the outputs of the differential driver into a high-impedance state with a high input signal. All drivers and receivers have fail-safe mechanisms to ensure a high output state when the inputs are left open.

A switched-capacitor voltage converter generates the negative voltage required from a single 5-V supply using four 0.1-uF capacitors, two capacitors between the C+ and C- terminals and two capacitors between VEE and ground.

The SN75LBC776 is characterized for operation over the 0°C to 70°C temperature range.

产品特性

  • Single-Chip Interface Solution for the 9-terminal GeoPort™ Host (DTE)
  • Designed to Operate up to 4 Mbit/s Full Duplex
  • Single 5-V Supply Operation
  • 6-kV ESD Protection on All Terminals
  • Backward compatible With AppleTalk™ and LocalTalk™
  • Combines Multiple Components into a Single-chip Solution
  • Complements the SN75LBC777 9-Terminal GeoPort Peripheral (DCE) Interface Device
  • LinBiCMOS™ Process Technology

GeoPort, LocalTalk, and AppleTalk are trademarks of Apple Computer, Incorporated. LinBiCMOS is a trademark of Texas Instruments Incorporated.

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