CD74FCT244AT datasheet(2/11 Pages) TI

2 / 11 page

CD74FCT244, CD74FCT244AT

BiCMOS OCTAL BUFFERS/LINE DRIVERS

WITH 3-STATE OUTPUTS

SCBS722B – JULY 2000 – REVISED AUGUST 2003

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

logic diagram (positive logic)

218

1Y1

1OE

1A1

416

1Y2

1A2

614

1Y3

1A3

812

1Y4

1A4

2Y1

2OE

2A1

2Y2

2A2

2Y3

2A3

2Y4

2A4

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†

DC supply voltage range, VCC

–0.5 V to 6 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DC input clamp current, IIK (VI < –0.5 V)

–20 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DC output clamp current, IOK (VO < –0.5 V)

–50 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DC output sink current per output pin, IOL

70 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DC output source current per output pin, IOH

–30 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous current through VCC, ICC

140 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous current through GND

528 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Package thermal impedance,

θJA (see Note 1): E package

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

M package

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SM package

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, Tstg

–65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† 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 under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES:

1. The package thermal impedance is calculated in accordance with JESD 51-7.

recommended operating conditions (see Note 2)

MIN

MAX

UNIT

VCC

Supply voltage

4.75

5.25

VIH

High-level input voltage

VIL

Low-level input voltage

0.8

Input voltage

VCC

Output voltage

VCC

IOH

High-level output current

–15

IOL

Low-level output current

∆t/∆v

Input transition rise or fall rate (slew rate)

ns/V

Operating free-air temperature

°C

NOTE 2: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,

Implications of Slow or Floating CMOS Inputs, literature number SCBA004.

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