LTC2855CGN Linear Technology Corporation, LTC2855CGN Datasheet
LTC2855CGN
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LTC2855CGN Summary of contents
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... DFN and 16-Pin SSOP Packages APPLICATIONS Low Power RS485/RS422 Transceiver ■ Level Translator ■ Backplane Transceiver ■ , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION LTC2854 120Ω ...
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... LTC2855CDE#TR LTC2855IDE LTC2855IDE#TR LTC2855HDE LTC2855HDE#TR LTC2855CGN LTC2855CGN#TR LTC2855IGN LTC2855IGN#TR LTC2855HGN LTC2855HGN#TR Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. For more information on lead free part marking, go to: For more information on tape and reel specifi ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER Driver |V | Differential Driver Output Voltage OD Δ|V | Change in Magnitude of Driver OD Differential Output Voltage for Complementary Output States V Driver Common Mode Output ...
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LTC2854/LTC2855 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER I Supply Current in Transmit Mode CCT I Supply Current with Both Driver and CCTR Receiver Enabled I Supply Current in Termination Mode CCTERM I Supply Current ...
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TEST CIRCUITS Y + GND DRIVER OD – Figure 1. Driver DC Characteristics Y DI DRIVER R DIFF Z 285455 F04a DRIVER OR GND Figure 5. ...
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LTC2854/LTC2855 TEST CIRCUITS A ± RECEIVER CM B ± RECEIVER Figure 7. Receiver Enable and Disable Timing ...
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TYPICAL PERFORMANCE CHARACTERISTICS Receiver Skew vs Temperature 1. 15pF – –40 –20 80 100 TEMPERATURE (˚C) 285455 G01 R vs Temperature TERM 135 130 125 120 115 ...
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LTC2854/LTC2855 PIN FUNCTIONS (DD/DE/GN) RO (Pin 1): Receiver Output. If the receiver output is enabled ( ⎯ R ⎯ E low) and A > 200mV, then RO will be high < 200mV, then RO ...
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FUNCTION TABLES LTC2854 LOGIC INPUTS ⎯ R ⎯ RECEIVE WITH TERM TRANSMIT WITH RECEIVE TRANSMIT WITH RECEIVE 1 1 ...
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LTC2854/LTC2855 APPLICATIONS INFORMATION Driver The driver provides full RS485/RS422 compatibility. When enabled high, Y-Z is positive for the full-duplex device (LTC2855) and A-B is positive for the half-duplex device (LTC2854). When the driver is disabled, both outputs ...
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APPLICATIONS INFORMATION Switchable Termination Proper cable termination is very important for good signal fi delity. If the cable is not terminated with its char- acteristic impedance, refl ections will result in distorted waveforms. The LTC2854/LTC2855 are the fi rst 3.3V ...
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LTC2854/LTC2855 APPLICATIONS INFORMATION Supply Current The unloaded static supply currents in the LTC2854/ LTC2855 are very low —typically under 500μA for all modes of operation. In applications with resistively ter- minated cables, the supply current is dominated by the driver ...
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TYPICAL APPLICATION PACKAGE DESCRIPTION 3.50 ±0.05 1.65 ±0.05 2.15 ±0.05 (2 SIDES) 0.25 ± 0.05 0.50 BSC 2.38 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF ...
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LTC2854/LTC2855 PACKAGE DESCRIPTION 3.60 ±0.05 1.70 ±0.05 2.20 ±0.05 (2 SIDES) 0.25 ± 0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS PIN 1 TOP MARK (NOTE 6) 0.200 REF NOTE: 1. DRAWING PROPOSED VARIATION OF VERSION (WGED) IN ...
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... DIMENSIONS ARE IN 3. DRAWING NOT TO SCALE 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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. GN Package 16-Lead Plastic SSOP (Narrow ...
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... Propagation Delay Skew 500ps (Typ) 60V Tolerant, 15kV ESD Up to 256 Transceivers on the Bus 5V Integrated, Switchable, 120Ω Termination Resistor, 15kV ESD www.linear.com ● D LTC2854 LTC2854 3.3V D 285455 TA04 Isolation in Surface Mount Package LT 1107 REV A • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2007 285455fa ...