LTC1685CS8#PBF Linear Technology, LTC1685CS8#PBF Datasheet
LTC1685CS8#PBF
Specifications of LTC1685CS8#PBF
Available stocks
Related parts for LTC1685CS8#PBF
LTC1685CS8#PBF Summary of contents
Page 1
... Input resistance will remain 22k when the device is unpowered or disabled. The LTC1685 operates from a single 5V supply and draws only 7mA of supply current. , LTC and LT are registered trademarks of Linear Technology Corporation. 2V/DIV Rt 1V/DIV Rt ...
Page 2
LTC1685 BSOLUTE (Note 1) Supply Voltage (V ) .............................................. 10V DD Control Input Currents .................... – 100mA to 100mA Control Input Voltages .................. – 0. Driver Input Voltages .................... – 0.5V ...
Page 3
DC ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER I Driver Short-Circuit Current, V OSD2 I Receiver Short-Circuit Current OSR R Input Resistance IN C Input Capacitance IN Open-Circuit Input Voltage, Figure 5 Fail-Safe Time Time to ...
Page 4
LTC1685 U SWITCHING CHARACTERISTICS Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: All currents into the device pins are positive; all currents out of the device pins are ...
Page 5
W U TYPICAL PERFORMANCE CHARACTERISTICS Receiver Propagation Delay vs Temperature 125 –50 – 100 TEMPERATURE ( C) 1680 G09 Driver Propagation Delay vs Driver Input Voltage ...
Page 6
LTC1685 CTIO TABLES Transmitting INPUTS LINE CONDITION Fault Fault Fault TEST CIRCUITS Figure ...
Page 7
U W SWITCHI WAVEFOR 1 – ...
Page 8
LTC1685 EQUIVALENT INPUT NETWORKS U U APPLICATIONS INFORMATION Theory of Operation Unlike typical CMOS transceivers whose propagation delay can vary by as much as 500% from package to package and show significant temperature drift, the LTC1685 employs ...
Page 9
U U APPLICATIONS INFORMATION Output Short-Circuit Protection The LTC1685 employs voltage sensing short-circuit pro- tection at the output terminals of both the driver and receiver. For a given input polarity, this circuitry deter- mines what the correct output level should ...
Page 10
LTC1685 U U APPLICATIONS INFORMATION 2V/DIV 2V/DIV 100ns/DIV Figure 12. 1000ft of Category 5 UTP: 4Mbps 2V/DIV 2V/DIV 2V/DIV 20ns/DIV Figure 13. 100ft of Telephone Grade UTP: 30Mbps Very inexpensive unshielded telephone grade twisted pair is shown in Figure 13. ...
Page 11
... Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...
Page 12
... Pin Compatible with LTC490/LTC491 100Mbps, Pin Compatible with LTC486/LTC487 0.189 – 0.197* (4.801 – 5.004 0.150 – 0.157** (3.810 – 3.988 0.004 – 0.010 (0.101 – 0.254) 0.050 (1.270) BSC SO8 0695 1685fa LT/LCG 0700 2K REV A • PRINTED IN THE USA LINEAR TECHNOLOGY CORPORATION 1997 ...