±15kV ESD Protection

As with all Maxim devices, ESD-protection structures

are incorporated on all pins to protect against electro-

static discharges encountered during handling and

assembly. The driver outputs and receiver inputs have

extra protection against static electricity. Maxim’s engi-

neers have developed state-of-the-art structures to pro-

tect these pins against ESD of ±15kV without damage.

The ESD structures withstand high ESD in all states.

After an ESD event, the MAX3535E/MXL1535E keep

working without latchup. ESD protection can be tested

in various ways. The transmitter outputs and receiver

inputs of this product family are characterized for pro-

tection to ±15kV using the Human Body Model.

ESD Test Conditions

The ±15kV ESD test specifications apply only to the A,

B, Y, and Z I/O pins. The test surge is referenced to

GND2. All remaining pins are ±2kV ESD protected.

Human Body Model

Figure 14 shows the Human Body Model, and Figure

15 shows the current waveform it generates when dis-

charged into 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

1.5k

Ω resistor.

Transceivers with ±15kV ESD Protection

22

______________________________________________________________________________________

Table 6. Transformers for MAX3535E at +3.3V

MANUFACTURER

PART

NUMBER

ISOLATION

VOLTAGE (1s)

PHONE

NUMBER

WEBSITE

TGM-040

TGM-240

TGM-340

HALO Electronics, Inc.

TGM-340

650-903-3800

www.haloelectronics.com/6pin.html

BH Electronics, Inc.

500-2582

952-894-9590

www.bhelectronics.com/PDFs/DC-

DCConverterTransformers.pdf

Coilcraft, Inc.

Q4470-C

800-322-2645

44-1236-730595

www.coilcraft.com/minitrans.cfm

78253335

1500V

Newport/C&D Technologies

76253335

4000V

520-295-4300

www.dc-dc.com/products/productline.asp?ED=9

95062

1250V

Midcom, Inc.

95063

1250V

605-886-4385

www.midcom-inc.com

PCA Electronics, Inc.

EPC3115S-2

700V DC

818-894-5791

www.pca.com/Datasheets/EPC3117S-X.pdf

Rhombus Industries, Inc.

T-1107

714-898-0960

www.rhombus-ind.com/pt-cat/maxim.pdf

Premier Magnetics Inc.

PM-SM16

949-452-0511

www.premiermag.com/pdf/pmsm15.pdf

CHARGE-CURRENT-

LIMIT RESISTOR

DISCHARGE

RESISTANCE

STORAGE

CAPACITOR

Cs

100pF

Ω

Ω

HIGH-

VOLTAGE

DC

SOURCE

DEVICE

UNDER

TEST

Figure 14. Human Body ESD Test Model