74LVT244B datasheet(5/10 Pages) PHILIPS

部件名	74LVT244B

功能描述	3.3V Octal buffer/line driver 3-State

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制造商	PHILIPS [NXP Semiconductors]

网页	http://www.nxp.com

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Philips Semiconductors

Product specification

74LVT244B

3.3V Octal buffer/line driver (3-State)

1998 Nov 12

5

DC ELECTRICAL CHARACTERISTICS

LIMITS

SYMBOL

PARAMETER

TEST CONDITIONS

Temp = -40

°C to +85°C

UNIT

MIN

TYP1

MAX

VIK

Input clamp voltage

VCC = 2.7V; IIK = –18mA

–0.9

–1.2

V

VCC = 2.7 to 3.6V; IOH = –100µA

VCC-0.2

VCC-0.1

VOH

High-level output voltage

VCC = 2.7V; IOH = –8mA

2.4

2.5

V

VCC = 3.0V; IOH = –32mA

2.0

2.2

VCC = 2.7V; IOL = 100µA

0.1

0.2

VCC = 2.7V; IOL = 24mA

0.3

0.5

VOL

Low-level output voltage

VCC = 3.0V; IOL = 16mA

0.25

0.4

V

VCC = 3.0V; IOL = 32mA

0.3

0.5

VCC = 3.0V; IOL = 64mA

0.4

0.55

VCC = 0 or 3.6V; VI = 5.5V

0.1

10

II

Input leakage current

VCC = 3.6V; VI = VCC or GND

Control pins

±0.1

±1

µA

II

In ut leakage current

VCC = 3.6V; VI = VCC

Data Pins4

0.1

1

µA

VCC = 3.6V; VI = 0

Data Pins4

–1

-5

IOFF

Output off current

VCC = 0V; VI or VO = 0 to 4.5V

1

±100

µA

6

VCC = 3V; VI = 0.8V

75

130

IHOLD

Bus Hold current A inputs6

VCC = 3V; VI = 2.0V

–75

–140

µA

VCC = 0V to 3.6V; VCC = 3.6V

±500

IEX

Current into an output in the

High state when VO > VCC

VO = 5.5V; VCC = 3.0V

60

125

µA

IPU/PD

Power up/down 3-State

output current3

VCC ≤ 1.2V; VO = 0.5V to VCC; VI = GND or VCC;

OE/OE = Don’t care

±1

±100

µA

IOZH

3-State output high current

VCC = 3.6V; VO = 3V; VI = VIL or VIH

1

5

µA

IOZL

3-State output low current

VCC = 3.6V; VO = 0.5V; VI = VIL or VIH

–1

–5

µA

ICCH

VCC = 3.6V; Outputs High, VI = GND or VCC, IO = 0

0.13

0.19

ICCL

Quiescent supply current

VCC = 3.6V; Outputs Low, VI = GND or VCC, IO = 0

2

5

mA

ICCZ

VCC = 3.6V; Outputs Disabled; VI = GND or VCC, IO = 05

0.13

0.19

∆ICC

Additional supply current per

input pin2

VCC = 3V to 3.6V; One input at VCC-0.6V,

Other inputs at VCC or GND

0.1

0.2

mA

NOTES:

1. All typical values are at Tamb = 25°C.

2. This is the increase in supply current for each input at the specified voltage level other than VCC or GND

3. This parameter is valid for any VCC between 0V and 1.2V with a transition time of up to 10msec. From VCC = 1.2V to VCC = 3.3V ± 0.3V a

transition time of 100

µsec is permitted. This parameter is valid for Tamb = 25°C only.

4. Unused pins at VCC or GND.

5. ICCZ is measured with outputs pulled to VCC or GND.

6. This is the bus hold overdrive current required to force the input to the opposite logic state.

AC CHARACTERISTICS

GND = 0V; tR = tF = 2.5ns; CL = 50pF; RL = 500Ω; Tamb = –40°C to +85°C.

LIMITS

SYMBOL

PARAMETER

WAVEFORM

VCC = 3.3V ±0.3V

VCC = 2.7V

UNIT

MIN

TYP1

MAX

tPLH

tPHL

Propagation delay

nAx to nYx

1

1.1

1.3

1.9

2.0

3.5

3.3

3.8

3.6

ns

tPZH

tPZL

Output enable time

to High and Low level

2

1.1

1.4

2.8

2.3

4.5

4.4

5.3

4.9

ns

tPHZ

tPLZ

Output disable time

from High and Low level

2

1.9

1.8

2.9

2.5

4.4

4.5

4.4

ns

类似零件编号 - 74LVT244B

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