SN74F299DWRE4 datasheet(3/13 Pages) TI

部件名	SN74F299DWRE4

功能描述	8-BIT UNIVERSAL SHIFT/STORAGE REGISTERS WITH 3-STATE OUTPUTS

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制造商	TI [Texas Instruments]

网页	http://www.ti.com

标志

3 / 13 page

The SN54F299 is obsolete and no

longer supplied.

SN54F299, SN74F299

8BIT UNIVERSAL SHIFT/STORAGE REGISTERS

WITH 3STATE OUTPUTS

SDFS071B − MARCH 1987 − REVISED APRIL 2004

3

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

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

Supply voltage range, VCC

−0.5 V to 7 V

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

Input voltage range, VI (see Note 1)

−1.2 V to 7 V

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

Input current range

−30 mA to 5 mA

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

Voltage range applied to any output in the disabled or power-off state

−0.5 V to 5.5 V

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

Voltage range applied to any output in the high state

−0.5 V to VCC

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

Current into any output in the low state: QA′ or QH′

40 mA

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

SN54F299 (QA thru QH)

40 mA

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

SN74F299 (QA thru QH)

48 mA

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

Package thermal impedance,

θJA (see Note 2): DW package

58

°C/W

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

N package

69

°C/W

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

NS package

60

°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 input voltage ratings may be exceeded provided the input current ratings are observed.

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

recommended operating conditions (see Note 3)

SN54F299

SN74F299

UNIT

MIN

NOM

MAX

MIN

NOM

MAX

UNIT

VCC

Supply voltage

4.5

5

5.5

4.5

5

5.5

V

VIH

High-level input voltage

2

V

VIL

Low-level input voltage

0.8

V

IIK

Input clamp current

−18

mA

IOH

High-level output current

QA′ or QH′

−1

mA

IOH

High-level output current

QA thru QH

−3

mA

IOL

Low-level output current

QA′ or QH′

20

mA

IOL

Low-level output current

QA thru QH

20

24

mA

TA

Operating free-air temperature

−55

125

0

70

°C

NOTE 3: 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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