データシートサーチシステム |
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ST-351A データシート(PDF) 8 Page - Texas Instruments |
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ST-351A データシート(HTML) 8 Page - Texas Instruments |
8 / 25 page Overview 1-2 1.1 Overview The transceivers in the HVD2x family offer performance far exceeding typical RS-485 devices. In addition to meeting all requirements of the TIA/EIA-485-A standard, the HVD2x family operates over an extended range common-mode voltage, and has features such as high ESD protection, wide receiver hysteresis, and failsafe operation. This family of devices is ideally suited for long-cable networks and other applications where the environment is too harsh for ordinary transceivers. These devices are designed for bidirectional data transmission on multipoint twisted-pair cables. Example applications are digital motor controllers, remote sensors and terminals, industrial process control, security stations, and environmental control systems. These devices combine a 3-state differential driver and a differential receiver, which operate from a single 5-V power supply. The driver differential outputs and the receiver differential inputs are connected internally to form a differential bus port that offers minimum loading to the bus. This port features an extended common-mode voltage range making the device suitable for multipoint applications over long cable runs. Figure 1 - 1 shows the basic functions of the SN65HVD22. The SN65HVD22 has controlled driver output slew rate for low radiated noise in emission-sensitive applications and for improved signal quality with long stubs. Up to 256 SN65HVD22 nodes can be connected at signaling rates up to 500 kbps. Figure 1 - 1. Functional Configurations of the SN65HVD22 B A R RE DE D 0 V Received Data B A R RE DE D 5 V Transmit Data B A R RE DE D 5 V Transmit Data 0 V Received Data (a) Differential Receiver (b) Differential Driver (b) Differential Transceiver Figure 1 - 2 is a picture of the SN65HVD22 EVM. The EVM part number is SN65HVD22EVM and comes with the SN65HVD22D (U2) installed. A copy of the data sheet is shipped with the EVM—however, the latest version of the data sheet is available from www.ti.com. |
同様の部品番号 - ST-351A |
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同様の説明 - ST-351A |
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