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DS2196 Datasheet(PDF) 121 Page - Dallas Semiconductor |
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DS2196 Datasheet(HTML) 121 Page - Dallas Semiconductor |
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121 / 157 page  DS2196 121 of 157 Figure 19-1: EXTERNAL ANALOG CONNECTIONS NOTES: 1. Resistor values are 1%. 2. Circuit requires use of Schottky diodes for D1-D4. 3. S is a 6V transient suppresser. 4. C1 is 0.1 uF. 5. The Rp resistors are used to prevent the fuses from opening during a surge. 6. See the Separate Application Note for details on how to construct a protected interface. 7. MCLK requires a TTL level 1.544 MHz clock (+50 ppm) for proper device operation. RTIP RRING TTIP TRING 1:1 T1 Receive Line T1 Transmit Line 2:1 (larger winding toward the network) DS2196 1uF (non- polarized) DVDD DVSS 0.1uF RVDD RVSS 0.1uF TVDD TVSS 0.1uF +3.3V 0.1uF Rp 0.01uF 1.544MHz MCLK +3.3V 470 470 100 Rp Fuse Fuse Rp Fuse Rp Fuse S C1 D1 D2 D3 D4 RTIP RRING 1:1 T1 Receive Line 0.1uF 470 470 Rp Fuse Rp Fuse Alternate Receive Interface 50 50 10 uF Tant |
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