LTC2858-2 Linear Technology, LTC2858-2 Datasheet
LTC2858-2
Related parts for LTC2858-2
LTC2858-2 Summary of contents
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... TA01a Limited 15kV RS485/RS422 DESCRIPTION The LTC LTC2858-1 and LTC2858-2 are low power, RS485/RS422 transceivers operating on 5V supplies at maximum data rates of 20Mbps or 250kbps for low EMI. The receiver has a one-eighth unit load, supporting up to 256 nodes per bus (C, I-Grade), and a failsafe feature that guarantees a high output state under conditions of fl ...
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... LTC2857-1/LTC2857-2 LTC2858-1/LTC2858-2 ABSOLUTE MAXIMUM RATINGS (Note 1) Supply Voltage (V ) ................................... –0. Logic Input Voltages (RE, DE, DI) ................ –0. Interface I/O ( ....................(V Receiver Output Voltage (RO) .......–0. Operating Temperature Range (Note 4) LTC285xC ................................................ 0°C to 70°C LTC285xI.............................................. –40°C to 85°C LTC285xH .......................................... –40°C to 125°C www ...
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... LTC2857-1 LTCMC, LCMD LTC2857-2 LTCMK, LCMM LTC2858-1 LTCGQ, LCGR LTC2858-2 LTCMQ, LCMR LTC2857-1/LTC2857-2 LTC2858-1/LTC2858-2 LEAD FREE DESIGNATOR TAPE AND REEL TR = Tape and Reel SPEED -1 = 20Mbps Max. Data Rate -2 = 250kbps Max. Data Rate PACKAGE TYPE DD = 8-Lead Plastic DFN (LTC2856, LTC2858) ...
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... 5V, 0V ≤ RO ≤ LTC2856-1, CC LTC2856-2, LTC2858-1, LTC2858-2 DE, DI, RE 5.5V CC DE, DI, RE 4.5V CC DE LTC2856, LTC2858 (C and I-Grade) LTC2856, LTC2858 (H-Grade) No Load 0V 0V, LTC2856-1, LTC2856-2, LTC2858-1, LTC2858-2 MIN TYP MAX UNITS ● ● 1 ● ● ...
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... Driver Enable or Disable Time ZLD ZHD LZD HZD Driver Enable from Shutdown ZHSD ZLSD t Time to Shutdown SHDN Driver in LTC2856-2, LTC2857-2, LTC2858-2 f Maximum Data Rate MAXS Driver Input to Output PLHDS PHLDS Δt Driver Input to Output Difference |t PDS t Driver Output A to Output B SKEWDS ...
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... LTC2857-1/LTC2857-2 LTC2858-1/LTC2858-2 ELECTRICAL CHARACTERISTICS Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. High temperatures degrade operating lifetimes. ...
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... GND GND 285678 F05a Figure 5. Driver Enable and Disable Timing Measurement LTC2857-1/LTC2857-2 LTC2858-1/LTC2858 PHLD , PLHD , PHLDS t 0V PLHDS t t SKEWD , SKEWDS V 1 90% 90 10% ...
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... F06 Figure 6. Receiver Propagation Delay Measurements GND Figure 7. Receiver Enable/Disable Time Measurements LTC2858-1, LTC2858-2 LOGIC INPUTS Driven High Driven Driven 1 Driven High – PLHR ...
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... Temperature 1. 15pF –40 – TEMPERATURE (°C) LTC2857-1/LTC2857-2 LTC2858-1/LTC2858 25° unless otherwise noted Driver Propagation Delay vs Temperature 54Ω DIFF C = 100pF –40 – ...
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... LTC2858-2. High impedance when the driver is disabled (LTC2858-1) or unpowered Inverting Driver Output for the LTC2857-1, LTC2857-2, LTC2858-1 and LTC2858-2. High impedance when the driver is disabled (LTC2858-1) or unpowered Inverting Receiver Input (and Inverting Driver Output for the LTC2856-1 and LTC2856-2). Impedance is > 96kΩ in receive mode or unpowered. ...
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... BLOCK DIAGRAMS LTC2856-1, LTC2856-2 RO RECEIVER RE SLEEP/SHUTDOWN LOGIC AND DELAY DE www.DataSheet4U.com DRIVER (15kV) B (15kV) DI 2856 BD LTC2858-1, LTC2858-2 RO RECEIVER RE SLEEP/SHUTDOWN LOGIC AND DELAY DE DI DRIVER 2858 BD LTC2857-1/LTC2857-2 LTC2858-1/LTC2858-2 LTC2857-1, LTC2857-2 A (15kV) RECEIVER B (15kV) Z (15kV) DRIVER Y (15kV) 2857 BD A (15kV) B (15kV) ...
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... Note 4). Slew Limiting for EMI Emissions Control The LTC2856-2, LTC2857-2 and the LTC2858-2 feature reduced slew rate driver outputs to control the high fre- quency EMI emissions from equipment and data cables. ...
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... RS485 standard. The dashed line at 250kbps shows the maximum data rate of 285678 F08 the low-EMI LTC2856-2, LTC2857-2, and LTC2858-2. The dashed line at 20Mbps shows the maximum data rates of the LTC2856-1, LTC2857-1 and LTC2858-1. pin CC Figure 9 ...
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... LTC2857-1/LTC2857-2 LTC2858-1/LTC2858-2 APPLICATIONS INFORMATION Time-Based Traces Y, Z 1V/DIV Y-Z 2V/DIV www.DataSheet4U.com 2μs/DIV Figure 10. LTC2858-1 Driver Output at 100kHz Into 100Ω Resistor 14 Y-Z 10dB/DIV 285678 F10a Frequency Spectrum 285678 F10b 1.25MHz/DIV 285678fe ...
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... APPLICATIONS INFORMATION Time-Based Traces Y, Z 1V/DIV Y-Z 2V/DIV www.DataSheet4U.com 2μs/DIV Figure 11. LTC2858-2 Driver Output at 100kHz Into 100Ω Resistor TYPICAL APPLICATIONS Y-Z 10dB/DIV 285678 F11a Failsafe “0” Application (Idle State = Logic “0” 100k LTC2856-1 ...
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... LTC2857-1/LTC2857-2 LTC2858-1/LTC2858-2 PACKAGE DESCRIPTION 3.5 0.05 1.65 0.05 2.15 0.05 (2 SIDES) www.DataSheet4U.com RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS TOP MARK (NOTE Package 8-Lead Plastic DFN (3mm × 3mm) (Reference LTC DWG # 05-08-1698) 0.675 0.05 PACKAGE OUTLINE 0.25 0.05 0.50 BSC 2.38 0.05 (2 SIDES) 3.00 0.10 (4 SIDES) PIN 1 0.200 REF 0.75 0.05 0.00 – 0.05 NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-1) 2 ...
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... SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE DD Package 10-Lead Plastic DFN (3mm × 3mm) (Reference LTC DWG # 05-08-1699) 0.675 0.05 PIN 1 PACKAGE TOP MARK OUTLINE (SEE NOTE 6) 0.200 REF 0.50 BSC LTC2857-1/LTC2857-2 LTC2858-1/LTC2858 0.115 TYP 6 10 3.00 0.10 1.65 0.10 (4 SIDES) (2 SIDES 0.75 0.05 0.50 BSC 2.38 0.10 (2 SIDES) 0.00 – ...
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... LTC2857-1/LTC2857-2 LTC2858-1/LTC2858-2 PACKAGE DESCRIPTION 5.23 (.206) MIN www.DataSheet4U.com 0.42 0.038 (.0165 .0015) TYP RECOMMENDED SOLDER PAD LAYOUT GAUGE PLANE 0.18 (.007) NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006" ...
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... DETAIL “A” (.193 .006) 0.254 (.010) 0° – 6° TYP 0.53 0.152 (.021 .006) DETAIL “A” SEATING PLANE 0.17 – 0.27 (.007 – .011) TYP LTC2857-1/LTC2857-2 LTC2858-1/LTC2858-2 0.497 0.076 (.0196 .003 REF 3.00 0.102 (.118 .004) (NOTE 0.86 1.10 ( ...
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... LTC2856-1/LTC2856-2 LTC2857-1/LTC2857-2 LTC2858-1/LTC2858-2 TYPICAL APPLICATION Multi-Node Network and End Termination Using the LTC2856-1 R www.DataSheet4U.com LTC2859 RELATED PARTS PART NUMBER DESCRIPTION LTC485 Low Power RS485 Interface Transceiver LTC491 Differential RS485 Driver and Receiver Pair LTC1480 3.3V Ultralow Power RS485 Transceiver ...