MAX4821 datasheet(2/13 Pages) MAXIM

2 / 13 page

+3.3V/+5V, 8-Channel, Cascadable Relay Drivers

with Serial/Parallel Interface

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC = +3V to +5.5V, VCOM = VCC, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

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.

(All voltages referenced to GND.)

VCC, COM..............................................................-0.3V to +6.0V

OUT_........................................................-0.3V to (VCOM + 0.3V)

CS, SCLK, DIN, SET, RESET, A0, A1, A2, LVL......-0.3V to +6.0V

DOUT..........................................................-0.3V to (VCC + 0.3V)

Continuous OUT_ Current (all outputs turned on) ............150mA

Continuous OUT_ Current (single output turned on) ........300mA

Continuous Power Dissipation (TA = +70°C)

20-Lead Thin QFN

(derate 16.9mW/°C above +70°C) .................................1350mW

θJA .........................................................................59.3°C/W

20-Pin TSSOP

(derate 21.7mW/°C above +70°C) .................................1739mW

θJA ............................................................................46°C/W

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

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

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

Soldering Temperature (10s) ...........................................+300°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Operating Voltage

VCC

2.3

5.5

VCC = 3.6V

Quiescent Current

IOUT_ = 0,

logic inputs = 0 or VCC

VCC = 5.5V

µA

Thermal Shutdown

160

°C

Power-On Reset

0.8

1.5

2.2

Power-On Reset Hysteresis

140

DIGITAL INPUTS (SCLK, DIN, CS, LVL, A0, A1, A2, RESET, SET)

VCC = 3.3V

2.0

Input Logic High Voltage

VIH

VCC = 5V

2.4

VCC = 3.3V

0.6

Input Logic Low Voltage

VIL

VCC = 5V

0.8

Input Logic Hysteresis

VHYST

150

Input Leakage Currents

ILEAK

Input voltages = 0 or 5.5V

-1.0

0.01

+1.0

µA

CIN Input Capacitance

CIN

5pF

DIGITAL OUTPUT (DOUT)

DOUT Low Voltage

VOL

ISINK = 6mA

0.4

DOUT High Voltage

VOH

ISOURCE = 0.5mA

VCC - 0.5

RELAY OUTPUT DRIVERS (OUT1–OUT8)

VCC = 2.7V

OUT_ Drive Current

VCC = 4.5V

OUT_ On-Resistance

RON

VCC = 2.7V

Ω

OUT_ Voltage

VOUT_VCC = 3.0V, IOUT_ = 70mA

0.4

IOUT Off-Leakage Current

ILEAK

VOUT_ = VCC, all outputs off

-1

µA

Kickback Diode Forward Voltage

VFORW

IOUT_ = 150mA (Note 2)

1.5

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