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ELECTROSTATIC DISCHARGE SENSITIVITY MEASUREMENT

2 DEFINITIONS

– DUT (Device under test): a product evaluated for its sensitivity to ESD

– ESD (Electrostatic discharge): the transfer of electrostatic charge between bodies at differ-

ent electrostatic potentials

– Electrostatic Discharge Sensitivity: an ESD voltage level which causes part failure

– ESD simulator: an instrument that simulates the models described in this specification

– Human Body Model (HBM) ESD: an ESD pulse simulating the human body discharge to a

device

– Machine Model (MM) ESD: an ESD pulse approximating a pulse from a machine or mechan-

ical equipment

– Maximum Withstanding Voltage: the maximum ESD voltage at which the product passes the

failure criteria requirements specified in Section 4.

– PUT: pin under test

– Non-supply Pins: all input, output, bi-directional and clock pins except power pins and non

connected pins.

– Power Pins all power supply, external voltage source and ground pins

– Like-named Power Pins: Power Pins with similar names and functions. i.e. VDD1 - VDD2,

VCC1 - VCC2, GND1 - GND2.

– Ringing current: the damped high frequency current oscillation usually following the pulse

rise time

3 GENERAL

s

ESD pulse simulator and DUT

s

For HBM see FIGURE 1

s

For MM see FIGURE 2

3.1 MEASUREMENT EQUIPMENT

3.1.1 For HBM and MM

An oscilloscope and current probe with a minimum bandwidth of 350 MHz.

Maximum cable length of current probe is 1 meter.

– Evaluation loads:

a) low inductance, 1000 Volt, 500 ohm +/- 1% sputtered film resistor

b) tinned copper shorting wire

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