+1.2V to +5.5V, ±15kV ESD-Protected, 0.1µA,

35Mbps, 8-Channel Level Translators

16

______________________________________________________________________________________

ESD protection can be tested in various ways. The

acterized for protection to ±15kV using the Human

Body Model.

ESD Test Conditions

ESD performance depends on a variety of conditions.

Contact Maxim for a reliability report that documents

test setup, test methodology, and test results.

Human Body Model

Figure 7a shows the Human Body Model and Figure 7b

shows the current waveform it generates when dis-

charged into a low impedance. This model consists of a

100pF capacitor charged to the ESD voltage of interest,

which is then discharged into the test device through a

1.5kΩ resistor.

Machine Model

The Machine Model for ESD tests all pins using a

200pF storage capacitor and zero discharge resis-

tance. Its objective is to emulate the stress caused by

contact that occurs with handling and assembly during

manufacturing. Of course, all pins require this protec-

tion during manufacturing, not just inputs and outputs.

Therefore, after PCB assembly, the Machine Model is

less relevant to I/O ports.

P

ONE-SHOT

6k

Ω

6k

Ω

N

ONE-SHOT

P

ONE-SHOT

N

ONE-SHOT

Figure 5. MAX3001E/MAX3002–MAX3012 Simplified Functional Diagram (1 I/O Line)

0

Ω

Ω