MAX3280EAUK datasheet(8/10 Pages) MAXIM

Part #	MAX3280EAUK

Description	±15kV ESD-Protected 52Mbps, 3V to 5.5V, SOT23 RS-485/RS-422 True Fail-Safe Receivers

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Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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8 / 10 page

±15kV ESD-Protected 52Mbps, 3V to 5.5V, SOT23

RS-485/RS-422 True Fail-Safe Receivers

8

_______________________________________________________________________________________

Test Circuits/Timing Diagrams (continued)

CHARGE-CURRENT

LIMIT RESISTOR

DISCHARGE

RESISTANCE

STORAGE

CAPACITOR

Cs

100pF

RC

1M

Ω

RD

1.5k

Ω

HIGH-

VOLTAGE

DC

SOURCE

DEVICE

UNDER

TEST

Figure 3a. Human Body ESD Test Model

IP 100%

90%

36.8%

tRL

TIME

tDL

CURRENT WAVEFORM

PEAK-TO-PEAK RINGING

(NOT DRAWN TO SCALE)

Ir

10%

0

AMPERES

Figure 3b. Human Body Model Current Waveform

CHARGE-CURRENT

LIMIT RESISTOR

DISCHARGE

RESISTANCE

STORAGE

CAPACITOR

Cs

150pF

RC

50

Ω to 100Ω

RD

330

Ω

HIGH-

VOLTAGE

DC

SOURCE

DEVICE

UNDER

TEST

Figure 4a. IEC 1000-4-2 ESD Test Model

tr = 0.7ns to 1ns

30ns

60ns

t

100%

90%

10%

I

Figure 4b. IEC 1000-4-2 ESD Generator Current Waveform

10ns

A, 1V/div

RO, 2.5V/div

B = GND

Figure 5. Receiver Propagation Delay Driven by External RS-

485 Device

Similar Part No. - MAX3280EAUK

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