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XR-T7288IW Datasheet(PDF) 5 Page - Exar Corporation |
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XR-T7288IW Datasheet(HTML) 5 Page - Exar Corporation |
5 / 24 page XR-T7288 5 Rev. 1.01 ELECTRICAL CHARACTERISTICS Test Conditions: TA = -40°C to +85°C; VDD = 5V 10% Symbol Parameter Min. Typ. Max. Unit Conditions Logic Interface Electrical Characteristics Input Voltage VIL Low GNDD 0.8 V VIH High 2.0 VDDD V Output Voltage1 VOL Low GNDD 0.4 V 2.0mA Sink VOH High 2.4 VDDD V 80 µA Source CI Input Capacitance 20 pF CL Load Capacitance 40 pF Transmitter Specifications Output Pulse Amplitude 75 Ω (ZS = 0) 2.14 2.37 2.60 V 120 Ω (ZS = 1) 2.70 3.00 3.30 V Pulse Width (50%) 219 244 269 ns Positive/Negative Pulse Imbalance 5 % Zero Level 102 %2 Output Transformer Turns Ratio 1:1.33 1:1.36 1:1.39 Receiver Specifications Receiver Sensitivity3 0.7 4.2 Vp Allowed Cable Loss at BER 10-9 No Interference 10 7 dB Interfering PBRS, 18dB 6 dB Below Transmitted PBRS PLL4 3dB Bandwidth 28 kHz Peaking 0.24 0.5 dB ICO Free-running Frequency Error 7 % Notes 1 Digital outputs drive purely capacitive loads to full output levels (VDDD, GNDD) 2 Percentage of the nominal pulse amplitude. 3 Measured at T1, R1 (V peak-to-zero, GND reference) 4 Transfer characteristics (1/4 input) 5 All measurements are with a matched-impedance transmit interface (see Figure 3. and Figure 4.) and with VDD or GND applied to digital input leads. Internal pull-up devices are provided on the following input leads: LP1, LP2, LP3 and ALMT. Internal pull-down devices are provided on the following leads: SD, RBC, HDB3/TNDATA, TBC, SR/DR, FLM, and ZS. The internal pull-up or pull-down devices require the input to source or sink to be no more than 20 µA. Specifications are subject to change without notice |
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