 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| Low Capacitance TVS Diode Array For Multi-mode Tranciever Protection PROTECTION PRODUCTS Description The LCDA15C-6 has been specifically designed to protect sensitive components which are connected to data and transmission lines from over voltages caused by ESD (electrostatic discharge), EFT (electrical fast transients), and lightning. The low capacitance array configuration of the LCDA15C-6 allows the user to protect six high-speed data or I/O lines. They may be used on systems operating from 5 to 15 Volts. The high surge capability (500W, tp=8/20s) makes the LCDA15C-6 suitable for telecommunications systems operating in harsh transient environments. The low inductance construction minimizes voltage overshoot during high current surges. The features of the LCDA15C-6 are ideal for protecting multi-protocol transceivers in WAN applications such as Frame Relay systems, routers, and switches. LCDA15C-6 Features u Transient protection for high-speed data lines to IEC 61000-4-2 (ESD) 15kV (air), 8kV (contact) IEC 61000-4-4 (EFT) 40A (5/50ns) IEC 61000-4-5 (Lightning) 0.5kV, 12A (8/20s) Protects six I/O lines Low capacitance for high-speed interfaces High surge capability Low clamping voltage Solid-state silicon avalanche technology JEDEC SO-8 package Molding compound flammability rating: UL 94V-0 Marking : Part number, date code, logo Packaging : Tape and Reel per EIA 481 u u u u u u u u u Mechanical Characteristics Applications u Multi-Mode Transceiver Protection u WAN Equipment: CSU/DSU Multiplexers Routers ISP Equipment Customer Premise Equipment u Protection for any of the following interfaces: RS-232 (V.28) RS-422 (V.11, X.21) RS-449 (V.11/V.10) RS-485 Circuit Diagram Schematic & PIN Configuration SO-8 (Top View) Revision 9/2000 1 www.semtech.com LCDA15C-6 PROTECTION PRODUCTS Absolute Maximum Rating R ating Peak Pulse Pow er (tp = 8/20 s) Peak Pulse Current (tp = 8/20 s) Lead Sold ering Temp erature Op erating Temp erature Storage Temp erature Symbo l Pp k I PP TL TJ TSTG Value 500 15 260 (10 sec.) -55 to +125 -55 to +150 Units Watts A C C C Electrical Characteristics LCDA15C-6 Par ame te r Reverse Stand -Off Voltage Reverse Breakd ow n Voltage Reverse Leakage Current Clamp ing Voltage Clamp ing Voltage Junction Cap acitance Symbo l VRWM V BR IR VC VC Cj It= 1mA V RWM = 15V, T=25C IPP = 1A , tp = 8/20 s IPP = 15A , tp = 8/20 s Betw een I/O p ins and Gnd V R = 0V, f = 1MHz Betw een I/O p ins V R = 0V, f = 1MHz 8 16.7 5 24 33 15 Co nd itio ns Minimum Typ ical Maximum 15 Units V V A V V pF 3 pF a 2000 Semtech Corp. 2 www.semtech.com LCDA15C-6 PROTECTION PRODUCTS Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time 10 110 100 Peak Pulse Power - P PP (kW) 90 % of Rated Power or IPP 80 70 60 50 40 30 20 10 0.01 0.1 1 10 Pulse Duration - tp (s) 100 1000 0 0 25 50 75 100 125 150 175 Ambient Temperature - TA (oC) 1 Power Derating Curve 0.1 Pulse Waveform 110 100 90 80 Percent of IPP 70 60 50 40 30 20 10 0 0 5 10 15 Time (s) 20 25 30 td = IPP/2 e -t Clamping Voltage vs. Peak Pulse Current 28 Waveform Parameters: tr = 8s td = 20s 26 Clamping Voltage - VC (V) 24 22 20 18 16 14 12 10 0 2 4 6 8 10 12 14 16 Peak Pulse Current - IPP (A) Waveform Parameters: tr = 8s td = 20s a 2000 Semtech Corp. 3 www.semtech.com LCDA15C-6 PROTECTION PRODUCTS Applications Information Device Connection Options for Protection of Six HighSpeed Data Lines The LCDA16C-6 may be configured to protect up to six I/O lines operating between 5 and 15V. It may be used to protect the most popular serial data interface standard lines making it ideal for use in equipment utilizing multi-mode transceivers. Data lines are connected at pins 1, 2, 3, 6, 7, and 8. Pins 4 and 5 are connected to ground. For best results, these pins should be connected directly to a ground plane on the board. The path length should be kept as short as possible to minimize parasitic inductance. Multi-Mode Transceiver Protection A typical multi-mode transceiver protection circuit is shown. The LCDA15C-6 is used to protect I/O lines with external connections. The LCDA15C-6 adds a maximum loading capacitance of 15pF with a working voltage of 15V. This allows the transceiver to safely operate in all modes without clipping or degradation of the signal. With proper design and layout, the transceiver port can be protected to >15kV (HBM per IEC 61000-4-2). Circuit Board Layout Recommendations for Suppression of ESD. Good circuit board layout is critical for the suppression of fast rise-time transients such as ESD. The following guidelines are recommended: l Place the LCDA15C-6 near the input terminals or connectors to restrict transient coupling. l Minimize the path length between the LCDA15C-6 and the protected line. l Minimize all conductive loops including power and ground loops. l The ESD transient return path to ground should be kept as short as possible. l Never run critical signals near board edges. l Use ground planes whenever possible. Multi-Mode Tranceiver Protection Example Device Connection a 2000 Semtech Corp. 4 www.semtech.com LCDA15C-6 PROTECTION PRODUCTS Outline Drawing - SO-8 Land Pattern - SO-8 a 2000 Semtech Corp. 5 www.semtech.com LCDA15C-6 PROTECTION PRODUCTS Ordering Information Par t Numbe r LCDA15C-6.TB LCDA15C-6.TE Wo r king Vo ltage 15V 15V Qty p e r R e e l 500 2,500 R e e l Size 7 Inch 13 Inch Note: (1) No suffix indicates tube pack. Contact Information Semtech Corporation Protection Products Division 652 Mitchell Rd., Newbury Park, CA 91320 Phone: (805)498-2111 FAX (805)498-3804 a 2000 Semtech Corp. 6 www.semtech.com |
Price & Availability of LCDA15C-6
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |