SN74AS645N datasheet(2/20 Pages) TI1

部品番号	SN74AS645N

部品情報	OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

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SN54ALS645A, SN54AS645, SN74ALS645A, SN74AS645

OCTAL BUS TRANSCEIVERS

WITH 3-STATE OUTPUTS

SDAS278 – JANUARY 1995

2

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

logic symbol†

logic diagram (positive logic)

B2

17

B3

16

B4

15

A5

6

A6

7

A7

8

A8

9

A2

3

A3

4

A4

5

OE

A1

2

G3

19

3 EN2 [AB]

B5

14

B6

13

B7

12

B8

11

B1

18

3 EN1 [BA]

1

DIR

1

2

A1

B1

19

1

18

2

OE

DIR

To Seven Other Transceivers

† This symbol is in accordance with ANSI/IEEE Std 91-1984 and

IEC Publication 617-12.

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

Supply voltage, VCC

7 V

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

Input voltage, VI: All inputs

7 V

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

I/O ports

5.5 V

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

Operating free-air temperature range, TA: SN54ALS645A

– 55

°C to 125°C

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

SN74ALS645A

0

°C to 70°C

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

Storage temperature range

– 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.

recommended operating conditions

SN54ALS645A

SN74ALS645A

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

0.7

0.8

V

IOH

High-level output current

–12

–15

mA

IOL

Low level output current

12

24

mA

IOL

Low-level output current

48§

mA

TA

Operating free-air temperature

–55

125

0

70

°C

§ Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V

同様の部品番号 - SN74AS645N

メーカー	部品番号	データシート	部品情報
Texas Instruments	SN74AS645N	112Kb / 9P	[Old version datasheet] OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

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