SN74LV244A

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SCLS383N – SEPTEMBER 1997 – REVISED OCTOBER 2015

6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

(1)

MIN

MAX

UNIT

Supply voltage

2

5.5

V

1.5

High-level input voltage

V

0.5

Low-level input voltage

V

Input voltage

0

5.5

V

High or low state

0

Output voltage

V

3-state

0

5.5

–50

µA

–2

High-level output current

–8

mA

–16

50

µA

2

Low-level output current

8

mA

16

200

Δt/Δv

Input transition rise or fall rate

100

ns/V

20

Operating free-air temperature

–40

125

°C

(1)

Implications of Slow or Floating CMOS Inputs, SCBA004.

6.4 Thermal Information

SN74LV244A

DB

DGV

DW

NS

PW

RGY

UNIT

(SSOP)

(TVSOP)

(SOIC)

(SO)

(TSSOP)

(VQFN)

20 PINS

20 PINS

20 PINS

20 PINS

20 PINS

20 PINS

Junction-to-ambient thermal

94.7

115.9

79.4

76.9

102.6

34.9

°C/W

resistance

Junction-to-case (top) thermal

56.7

31.1

43.8

43.4

36.7

43.1

°C/W

resistance

Junction-to-board thermal resistance

49.9

57.4

47.2

44.5

53.6

12.7

°C/W

Junction-to-top characterization

18.7

1.0

18.8

17.0

2.4

0.9

°C/W

parameter

Junction-to-board characterization

49.5

56.7

46.7

44.1

53.1

12.8

°C/W

parameter

Junction-to-case (bottom) thermal

n/a

n/a

n/a

n/a

n/a

7.8

°C/W

resistance

(1)

For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

report, SPRA953.

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