TC74AC257FN datasheet(4/9 Pages) TOSHIBA

Nome de Peças	TC74AC257FN

Descrição Electrónicos	CMOS Digital Integrated Circuit Silicon Monolithic

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Fabricante Electrônico	TOSHIBA [Toshiba Semiconductor]

Página de início	http://www.semicon.toshiba.co.jp/eng

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4 / 9 page

TC74AC257,258P/F/FN

2007-10-01

4

Operating Ranges (Note)

Characteristics

Symbol

Rating

Unit

Supply voltage

VCC

2.0~5.5

V

Input voltage

VIN

0~VCC

V

Output voltage

VOUT

0~VCC

V

Operating temperature

Topr

−40~85

°C

Input rise and fall time

dt/dV

0~100 (VCC = 3.3 ± 0.3 V)

0~20 (VCC = 5 ± 0.5 V)

ns/V

Note:

The operating ranges must be maintained to ensure the normal operation of the device.

Unused inputs must be tied to either VCC or GND.

Electrical Characteristics

DC Characteristics

Ta

= 25°C

Ta

= −40~85°C

Characteristics

Symbol

Test Condition

VCC

(V)

Min

Typ.

Max

Min

Max

Unit

High-level input

voltage

VIH

⎯

2.0

3.0

5.5

1.50

2.10

3.85

⎯

1.50

2.10

3.85

⎯

V

Low-level input

voltage

VIL

⎯

2.0

3.0

5.5

⎯

0.50

0.90

1.65

⎯

0.50

0.90

1.65

V

IOH = −50 μA

2.0

3.0

4.5

1.9

2.9

4.4

2.0

3.0

4.5

⎯

1.9

2.9

4.4

⎯

High-level output

voltage

VOH

VIN

= VIH or

VIL

IOH = −4 mA

IOH = −24 mA

IOH = −75 mA

(Note)

3.0

4.5

5.5

2.58

3.94

⎯

2.48

3.80

3.85

⎯

V

IOL = 50 μA

2.0

3.0

4.5

⎯

0.0

0.1

⎯

0.1

Low-level output

voltage

VOL

VIN

= VIH or

VIL

IOL = 12 mA

IOL = 24 mA

IOL = 75 mA

(Note)

3.0

4.5

5.5

⎯

0.36

⎯

0.44

1.65

V

3-state output

off-state current

IOZ

VIN = VIH or VIL

VOUT = VCC or GND

5.5

⎯

±0.5

⎯

±5.0

μA

Input leakage

current

IIN

VIN = VCC or GND

5.5

⎯

±0.1

⎯

±1.0

μA

Quiescent supply

current

ICC

VIN = VCC or GND

5.5

⎯

8.0

⎯

80.0

μA

Note:

This spec indicates the capability of driving 50

Ω transmission lines.

One output should be tested at a time for a 10 ms maximum duration.

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