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参数资料
| 型号： | DS9503X |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/4页 |
| 文件大小： | 0K |
| 描述： | DIODE ESD PROTECTION W/RES CSP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 10,000 |
| 电压 - 反向隔离（标准值）： | 7.5V |
| 电极标记： | 单向 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-SOJ |
| 供应商设备封装： | 6-TSOC |
| 包装： | 管件 |
19-4699; 7/09
DS9503
ESD Protection Diode with Resistors
www.maxim-ic.com
SPECIAL FEATURES
SYMBOL AND CONVENTIONS
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Zener characteristic with voltage snap–back
to protect against ESD hits
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
C
IC
VCA
A
PACKAGE OUTLINE
TSOC SURFACE MOUNT PACKAGE
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6
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On–chip 5 ?? resistors for isolation at both
anode and cathode terminals
Industrial temperature range
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3
5
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.
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