These devices are BiCMOS interface ICs that are user configured as either a single RS-422, RS-485 differential transceiver, or as a dual (2 Tx, 2 Rx) RS-232 transceiver. In RS-232 mode, the on-board charge pump generates RS-232 compliant ±5V Tx output levels, from a supply as low as 4.5V. Four small 0.1µF capacitors are required for the charge pump. The transceivers are RS-232 compliant, with the Rx inputs handling up to ±25V, and the Tx outputs handling ±12V. In RS-485 mode, the transceivers support both the RS-485 and RS-422 differential communication standards. The RS-485 receiver features full fail-safe operation, so the Rx output remains in a high state if the inputs are open or shorted together. The RS-485 transmitter supports up to three data rates, two of which are slew rate limited for problem-free communications. The charge pump disables in RS-485 mode, thereby saving power, minimizing noise and eliminating the charge pump capacitors. Both RS-232, RS-485 modes feature loopback and shutdown functions. The loopback mode internally connects the Tx outputs to the corresponding Rx input, which facilitates the implementation of board level self-test functions. The outputs remain connected to the loads during loopback, so connection problems (e. g., shorted connectors or cables) can be detected. The shutdown mode disables the Tx and Rx outputs, disables the charge pump if in RS-232 mode, and places the IC in a low current (35µA) mode. The ISL41387 is a QFN packaged device that offers additional functionality, including a lower speed and edge rate option (115kbps) for EMI sensitive designs, or to allow longer bus lengths. It also features a logic supply voltage pin (VL) that sets the VOH level of logic outputs, and the switching points of logic inputs, to be compatible with another supply voltage in mixed voltage systems. The QFN's choice of active high or low Rx enable pins increases design flexibility, allowing Tx/Rx direction control via a single signal by connecting DEN and RXEN together. For a dual port version of these devices, please see the ISL81334, ISL41334 datasheet.
タイトル | 分類 | 日付 | |
---|---|---|---|
PDF1.61 MB
|
データシート
|
||
PDF1023 KB
|
アプリケーションノート
|
||
PDF207 KB
|
アプリケーションノート
|
||
PDF474 KB
|
アプリケーションノート
|
||
PDF178 KB
|
アプリケーションノート
|
||
PDF513 KB
|
アプリケーションノート
|
||
PDF826 KB
|
アプリケーションノート
|
||
PDF443 KB
|
アプリケーションノート
|
||
PDF582 KB
|
アプリケーションノート
|
||
PDF440 KB
|
アプリケーションノート
|
||
PDF338 KB
|
アプリケーションノート
|
||
PDF365 KB
|
アプリケーションノート
|
||
PDF375 KB
|
アプリケーションノート
|
||
PDF339 KB
|
アプリケーションノート
|
||
カタログ
|
|||
PDF156 KB
|
その他資料
|
||
PDF253 KB
|
その他資料
|
||
PDF359 KB
|
その他資料
|
||
PDF580 KB
|
その他資料
|
||
PDF208 KB
|
Price Increase Notice
|
||
PDF398 KB
|
製品変更通知
|
||
PDF98 KB
|
製品変更通知
|
||
PDF300 KB
|
技術概要
|
||
PDF328 KB
|
技術概要
|
||
PDF920 KB
|
ホワイトペーパー
|
The RoHS compliant ISL41387EVAL1Z evaluation board provides a quick and easy method for evaluating the ISL41387 dual protocol, BiCMOS, interface IC. The board also...
[製品選択]テーブル内の製品名をクリックするとSamacSysが提供する回路図シンボル、PCBフットプリント、3D CADモデルがご確認いただけます。 お探しのシンボルやモデルが見つからない場合、Webサイトから直接リクエストできます。