Rainbow Electronics MAX4951 - Manual (Page 8)

MAX4951
Human Body Model
The MAX4951 is characterized for ±5.5kV ESD protec-
tion using the Human Body Model (MIL-STD-883,
Method 3015). Figure 1 shows the Human Body Model
and Figure 2 shows the current waveform it generates
when discharged into a low impedance. This model
consists of a 100pF capacitor charged to the ESD volt-
age of interest that is then discharged into the device
through a 1.5k
Ω resistor.
Power-Supply Sequencing
Caution: Do not exceed the absolute maximum rat-
ings because stresses beyond the listed ratings
may cause permanent damage to the device.
Proper power-supply sequencing is recommended for
all devices. Always apply V
CC before applying signals,
especially if the signal is not current limited.
SATA I/SATA II Bidirectional Re-Driver
8 _______________________________________________________________________________________
Figure 2. Human Body Current Waveform
I P 100%
90%
36.8%
t RL
TIME
t
DL
CURRENT WAVEFORM
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE) Ir
10%
0
0
AMPS
CHARGE-CURRENT
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR Cs
100pF
R C
1M Ω
R
D
1500 Ω
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
Figure 1. Human Body ESD Test Model