DS9503P+T&R;

19-4699; 7/09 DS9503 ESD Protection Diode with Resistors www.maxim-ic.com SYMBOL AND CONVENTIONS SPECIAL FEATURES   Zener characteristic with voltage snap–back to protect against ESD hits C IC High avalanche voltage, low leakage and low capacitance avoid signal attenuation  Compatible to all 5V logic families  Space saving, low inductance TSOC surface mount package  On–chip 5resistors for isolation at both anode and cathode terminals  Industrial temperature range VCA A PACKAGE OUTLINE TSOC SURFACE MOUNT PACKAGE 1 6 2 5 3 4 SIDE VIEW TOP VIEW ORDERING INFORMATION DS9503P+ DS9503P+T&R 6-lead TSOC package 6-lead TSOC package +Denotes a lead(Pb)-free/RoHS-compliant package. T&R = Tape and reel. DESCRIPTION This DS9503 is designed as an ESD protection device for 1–Wire MicroLAN interfaces. In contrast to the DS9502, the DS9503 includes two 5isolation resistors on chip. Although 5are negligible during communication, they represent a high impedance relative to the conducting diode during an ESD event. Thus, the diode absorbs the energy while the resistors further isolate and protect the circuit at the other side of the package. If used with circuits that already have a strong ESD–protection at their I/O port, the ESD protection level is raised to more that 27 kV (IEC 801–2 Reference model). In case of abnormal ESD hits beyond its maximum ratings the DS9503 will eventually fail “short” thus preventing further damage. During normal operation the DS9503 behaves like a regular Zener Diode. When the voltage exceeds the trigger voltage, the I/V characteristic of the device will “snapback” allowing the same or higher amount of current to flow, but at a significantly lower voltage. As long as a minimum current or voltage is maintained, the device will stay in the “snapback mode”. If the voltage or the current falls below the holding voltage or holding current, the device will abruptly change to its normal mode and conduct only a small leakage current. 1 of 3 DS9503 DC CHARACTERISTICS Figure 1 IC/A 1.0 I-TRIGGER 0.8 0.6 0.4 SEE DETAIL DRAWING 0.2 1 2 3 4 5 6 7 8 9 VAV DC CHARACTERISTICS DETAIL DRAWING Figure 2 TEST PULSE WAVEFORM Figure 3 TYPICAL APPLICATION Figure 4 2 of 4 10 11 VCA/V V-TRIGGER DS9503 ABSOLUTE MAXIMUM RATINGS* Operating Temperature Storage Temperature Soldering Temperature Continuous DC Current Through Package  –40°C to +85°C –55°C to +125°C 260°C for 10 seconds 80 mA This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability (-40C to +85C) ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Leakage Current IL Avalanche Voltage VAV MIN TYP MAX UNITS NOTES 30 100 nA 1 11.05 V 2,3 11 V 2, 4 1000 mA 4 7.4 Trigger Voltage VTRIGGER 10 Trigger Current ITRIGGER Holding Voltage VHOLD 5.5 V 2,4 Holding Current IHOLD 11 mA 4 Forward Voltage (-10 mA) VF -0.7 -0.8 V 5 Forward Current (-0.7V) IF -10 -100 mA 5 Maximum Peak Current IPP 2.0 A 6 Continuous Current Through Diode ICC Isolation Resistance RI 80 mA  5 (tA=25C) CAPACITANCE PARAMETER SYMBOL MIN TYP MAX UNITS NOTES Junction Capacitance (5V) CJ5 40 pF 2 Junction Capacitance (0V) CJ0 70 pF 2 MAX UNITS NOTES THERMAL RESISTANCE PARAMETER SYMBOL MIN TYP Junction To Package RJC 75 K/W Junction To Ambient RJA 200 K/W NOTES: 1. 2. 3. 4. 5. 6. At 7.0V. All voltages are referenced from Cathode to Anode. At 0.3 A. Not production tested, guaranteed by design. Typical values at room temperature. See pulse specification. 3 of 4 DS9503 REVISION HISTORY REVISION DATE DESCRIPTION Added “lead-free” note to the Ordering Information table. 072209 Fixed the X/Y scale in Figure 1. In the Electrical Characteristics table, changed the VAV specification maximum value to 11V; the VTRIGGER specification typical value to 10V and maximum value to 11V; the ITRIGGER specification typical value to a blank; and the IHOLD specification minimum value to an 11mA. Added note 4 (“Not production tested, guaranteed by design”) to the VTRIGGER, ITRIGGER, VHOLD, and IHOLD specifications in the Electrical Characteristics table. 4 of 4 PAGES CHANGED 1 2 3 3