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LXT381II датащи(PDF) 30 Page - Intel Corporation |
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LXT381II датащи(HTML) 30 Page - Intel Corporation |
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30 / 36 page ![]() LXT381 — Octal E1 Line Interface 30 Datasheet Table 13. Analog Test Port Characteristics Parameter Sym Min. Typ. Max. Unit Test Condition 3 dB Bandwidth at13db - 5 - MHz Input voltage range at1iv 0 - VCC0 VCC1 V Output voltage range at2ov 0 - VCC0 VCC1 V Table 14. Transmit Timing Characteristics Parameter Sym Min. Typ. Max. Unit Test Condition Output pulse width TW 219 244 269 ns Transmit clock frequency TCLK - 2.048 - MHz Transmit clock tolerance TCLKT -50 - +50 ppm Transmit clock duty cycle tDC 10 - 90 % NRZ mode TPOS/TNEG pulse width (RZ mode) tMPW 236 - 252 ns RZ mode (TCLK = H for >16 clock cycles) TPOS/TNEG to TCLK setup time TSUT 20 - - ns TCLK to TPOS/TNEG hold time THT 20 - - ns Delay time OE Low to driver Hi-Z TOEZ -- 1 µS Delay time TCLK Low to driver Hi-Z TTZ 8- 15 µS Figure 9. Transmit Clock Timing Table 15. Receive Timing Characteristics Parameter Sym Min. Typ. Max. Unit Test Condition Rise/fall time 1 Tr 20 - - ns @ CL=15 pF RPOS/RNEG pulse width Tpwl 200 244 300 ns Receiver throughput delay Trxd - 85 - ns Delay time between RPOS/RNEG and RCLK - - - 5 ns 1. For all digital outputs. TCLK TPOS TNEG tSUT tHT |
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