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DS2172 Datasheet(PDF) 19 Page - Dallas Semiconductor |
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DS2172 Datasheet(HTML) 19 Page - Dallas Semiconductor |
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19 / 21 page  DS2172 19 of 21 AC CHARACTERISTICS - RECEIVE SIDE (0ºC TO 70ºC for DS2172T; VDD=5V ±10%; -40ºC TO +85ºC for DS2172TN; VDD=5V ±10%) PARAMETER SYMBOL MIN TYP MAX UNITS NOTES RCLK Period tCP 19 ns RCLK Pulse Width tCH tCL 8 8 ns ns RDATA Set Up to RCLK Rising tSU1 4ns RDATA Hold from RCLK Rising tHD1 0ns RDIS Set Up to RCLK Rising tSU2 4ns RDIS Hold from RCLK Rising tHD2 0ns RL and LC Pulse Width tWRL 25 ns RCLK Rise and Fall Times tR, tF 10 ns 1 AC CHARACTERISTICS - TRANSMIT SIDE (0ºC TO 70ºC for DS2172T; VDD=5V ±10%; -40ºC TO +85ºC for DS2172TN; VDD=5V ±10%) PARAMETER SYMBOL MIN TYP MAX UNITS NOTES TCLK Period tCP 19 ns TCLK Pulse Width tCH tCL 8 8 ns ns TDATA Delay from TCLK Rising tDD 9ns TDIS Set Up to TCLK Rising tSU 4ns TDIS Hold from TCLK Rising tHD 0ns TL Pulse Width tWTL 15 ns TL Set Up to TCLK Rising tSTL 4ns TL Hold Off from TCLK Rising tHTL 0ns TCLK Rise and Fall Time tR, tF 10 ns 1 NOTE: 1. The maximum rise and fall time is either 10 ns or 10% of tCP whichever is less. |
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