Datenblatt-Suchmaschine für elektronische Bauteile |
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4-103239-0X2 Datenblatt(PDF) 9 Page - Texas Instruments |
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4-103239-0X2 Datenblatt(HTML) 9 Page - Texas Instruments |
9 / 25 page Signal Paths 1-3 Introduction Figure 1 - 2. SN65HVD22 Evaluation Module (EVM) Note that the EVM printed circuit board includes a location (U1) for a full-duplex transceiver. This allows for future EVM configurations using the same board. 1.2 Signal Paths The signal paths on this EVM include coaxial connectors (J7 and J8) for connecting to test equipment, and differential connection points (W17 and W18) for connecting to an RS-485 bus. Two banana jacks (J17 and J18) provide for power and ground connections. Jumpers (W3 and W4) in the circuit can be used to set the transceiver enabling. Jumper W11 is used to select the common-mode voltage (VCM) test conditions. Additional test points are provided in the circuit to facilitate measurements of critical signals. Table 1 - 1 lists the EVM connections. Table 1 - 1. HVD22 EVM Connections Connection Label Description J17 Vcc2 Power supply for HVD22 device J18 GND2 Power supply ground J7 RECEIVER Receiver output, R (pin 1) J8 DRIVER INPUT Driver input, D (pin 4) P3, W17, W18 TRANSCEIVER I/O RS-485 BUS I/O (pins 6 and 7) TP3 R Receiver output (pin 1) TP4 Driver input, D (pin 4) TP6 EXT_V2 Externally applied Vcm W3 RECEIVER Receiver enable, RE, (pin 2) W4 DRIVER Driver enable, DE, (pin 3) W11 TRANSCEIVER VCM SELECT Select between Vcm choices: None, GND2, External |
Ähnliche Teilenummer - 4-103239-0X2 |
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Ähnliche Beschreibung - 4-103239-0X2 |
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