5.4 Thermal Information

THERMAL METRIC(1)

DB

DW

PW

UNIT

28 PINS

28 PINS

28 PINS

RθJA

Junction-to-ambient thermal resistance

76.1

59.0

70.3

°C/W

RθJC(top)

Junction-to-case (top) thermal resistance

35.8

28.8

21.0

°C/W

RθJB

Junction-to-board thermal resistance

37.4

30.3

29.2

°C/W

ψJT

Junction-to-top characterization parameter

7.4

7.8

1.3

°C/W

ψJB

Junction-to-board characterization parameter

37.0

30.0

28.8

°C/W

RθJC(bot)

Junction-to-case (bottom) thermal resistance

N/A

N/A

N/A

°C/W

(1)

For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report (SPRA953).

5.5 Electrical Characteristics –– Auto Power Down

over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)(1) (see Figure 8-1)

PARAMETER

TEST CONDITIONS

MIN

TYP(1)

MAX

UNIT

ICC

Supply current

Auto-powerdown

disabled

No load, FORCEOFF and FORCEON at VCC. TA = 25°C

For DB and PW package

0.3

1.2

mA

Supply current

Auto-powerdown

disabled

No load, FORCEOFF and FORCEON at VCC. TA = 25°C

For DW package

0.3

1

mA

Supply current

Powered off

No load, FORCEOFF at GND. TA = 25°C

1

10

μA

Supply current

Auto-powerdown

enabled

No load, FORCEOFF at VCC, FORCEON at GND,

All RIN are open or grounded, All DIN are grounded. TA =

25°C

1

10

II

Input leakage current

of FORCEOFF, FORCEON

VI = VCC or VI at GND

±0.01

±1

μA

VIT+

Receiver input threshold

for INVALID high-level output

voltage

FORCEON = GND,

FORCEOFF = VCC

2.7

V

VIT–

Receiver input threshold

for INVALID high-level output

voltage

FORCEON = GND,

FORCEOFF = VCC

–2.7

V

VT

Receiver input threshold

for INVALID low-level output

voltage

FORCEON = GND,

FORCEOFF = VCC

–0.3

0.3

V

VOH

INVALID high-level output

voltage

IOH = -1 mA, FORCEON = GND,

FORCEOFF = VCC

VCC – 0.6

V

VOL INVALID low-level output voltage

IOL = 1.6 mA, FORCEON = GND,

FORCEOFF = VCC

0.4

V

(1)

Test conditions are C1–C4 = 0.1 μF at VCC = 3.3 V ± 0.3 V; C1 = 0.047 μF, C2–C4 = 0.33 μF at VCC = 5 V ± 0.5 V.

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MAX3243

SLLS350Q – APRIL 1999 – REVISED AUGUST 2024

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