MAX4890 datasheet(2/17 Pages) MAXIM

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10/100/1000 Base-T Ethernet LAN Switch

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ABSOLUTE MAXIMUM RATINGS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

V+ .............................................................................-0.3V to +4V

SEL (Note 1) ..................................................-0.3V to (V+ +0.3V)

A_, _B_, LED_, _LED_ ...................................-0.3V to (V+ +0.3V)

Continuous Current (A_ to _B_) ......................................±120mA

Continuous Current (LED_ to _LED_) ...............................±30mA

Peak Current (A_ to _B_)

(pulsed at 1ms, 10% duty cycle)................................±240mA

Continuous Power Dissipation (TA = +70°C)

32-Pin TQFN (derate 34.5mW/°C above +70°C) ...........2.76W

36-Pin TQFN (derate 26.3mW/°C above +70°C) ...........2.11W

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature ......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

ELECTRICAL CHARACTERISTICS

(V+ = +3V to +3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at V+ = 3.3V, TA = +25°C.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

ANALOG SWITCH

TA = +25°C

5.5

On-Resistance

RON

V+ = 3V,

IA_ = -40mA,

1.5V

≤ VA_ ≤ V+

TMIN to TMAX

6.5

On-Resistance

LED Switches

RONLED

V+ = 3V, I_LED_ = -40mA, 1.5V

≤ VA_ ≤ V+,

MAX4891/MAX4892

TA = +25°C

0.5

1.5

On-Resistance Match

Between Channels

ΔRON

V+ = 3V,

IA_= -40mA,

1.5V

≤ VA_ ≤ V+

(Note 3)

TMIN to TMAX

On-Resistance Flatness

RFLAT(ON)

V+ = 3V, IA_ = -40mA, VA_ = 1.5V, 2.7V

0.01

Off-Leakage Current

ILA_(OFF)

V+ = 3.6V, VA_ = 0.3V, 3.3V

V_B1 or V_B2 = 3.3V, 0.3V

-1

On-Leakage Current

ILA_(ON)

V+ = 3.6V, VA_= 0.3V, 3.3V

V_B1 or V_B2 = 0.3V, 3.3V or floating

-1

µA

ESD PROTECTION

ESD Protection

Human Body Model

±2

SWITCH AC PERFORMANCE

Insertion Loss

ILOS

Insertion loss with typical transformer,

RL = 100

Ω, 1MHz < f < 100MHz, Figure 1

(Note 3)

0.6

RLOS1

1MHz < f < 40MHz

-19

Return Loss

RLOS2

Return loss with

typical transformer,

RL = 100

Ω, return

loss, f in MHz,

Figure 2 (Note 3)

40MHz < f < 100MHz

-13

+20log

(f/80)

Note 1: Signals on SEL, exceeding V+ or GND, are clamped by internal diodes. Limit forward-diode current to maximum current

rating.

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