74ALVTH16821GRE4 datasheet(4/17 Pages) TI1

tên linh kiện	74ALVTH16821GRE4

Giải thích chi tiết về linh kiện	2.5-V/3.3-V 20-BIT BUS-INTERFACE FLIP-FLOPS WITH 3-STATE OUTPUTS

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SN54ALVTH16821, SN74ALVTH16821

2.5-V/3.3-V 20-BIT BUS-INTERFACE FLIP-FLOPS

WITH 3-STATE OUTPUTS

SCES078E – JULY 1996 – REVISED JANUARY 1999

4

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 4.6 V

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

Input voltage range, VI (see Note 1)

–0.5 V to 7 V

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

Voltage range applied to any output in the high-impedance

or power-off state, VO (see Note 1)

–0.5 V to 7 V

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

Voltage range applied to any output in the high state, VO (see Note 1)

–0.5 V to 7 V

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

Output current in the low state, IO: SN54ALVTH16821

96 mA

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

SN74ALVTH16821

128 mA

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

Output current in the high state, IO: SN54ALVTH16821

–48 mA

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

SN74ALVTH16821

–64 mA

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

Input clamp current, IIK (VI < 0)

–50 mA

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

Output clamp current, IOK (VO < 0)

–50 mA

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

Package thermal impedance,

θJA (see Note 2): DGG package

81

°C/W

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

DGV package

86

°C/W

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

DL package

74

°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 and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.

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

recommended operating conditions, VCC = 2.5 V ± 0.2 V (see Note 3)

SN54ALVTH16821

SN74ALVTH16821

UNIT

MIN

TYP

MAX

MIN

TYP

MAX

UNIT

VCC

Supply voltage

2.3

2.7

2.3

2.7

V

VIH

High-level input voltage

1.7

V

VIL

Low-level input voltage

0.7

V

VI

Input voltage

0

VCC

5.5

0

VCC

5.5

V

IOH

High-level output current

–6

–8

mA

IOL

Low-level output current

6

8

mA

IOL

Low-level output current; current duty cycle

≤ 50%; f ≥ 1 kHz

18

24

mA

∆t/∆v

Input transition rise or fall rate

Outputs enabled

10

ns/V

∆t/∆VCC

Power-up ramp rate

200

µs/V

TA

Operating free-air temperature

–55

125

–40

85

°C

NOTE 3: All unused control 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.

PRODUCT PREVIEW information concerns products in the formative or

design phase of development. Characteristic data and other

specifications are design goals. Texas Instruments reserves the right to

change or discontinue these products without notice.

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