74LVT245B_2

© NXP B.V. 2008. All rights reserved.

Product data sheet

Rev. 02 — 8 May 2008

4 of 15

NXP Semiconductors

74LVT245B

3.3 V octal transceiver with direction pin (3-state)

6.

Functional description

[1]

H = HIGH voltage level;

L = LOW voltage level;

X = don’t care;

Z = high impedance OFF-state.

7.

Limiting values

[1]

Stresses beyond those listed 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.

[2]

The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction

temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150

°C.

[3]

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

[4]

For SO20 packages: above 70

°C derate linearly with 8 mW/K.

For SSOP20 and TSSOP20 packages: above 60

°C derate linearly with 5.5 mW/K.

For DHVQFN20 packages: above 60

°C derate linearly with 4.5 mW/K.

Table 3.

Function selection

Inputs

Inputs/outputs

OE

DIR

An

Bn

L

L

An = Bn

inputs

L

H

inputs

Bn = An

HX

Z

Z

Table 4.

Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).[1][2]

Symbol

Parameter

Conditions

Min

Max

Unit

supply voltage

−0.5

+4.6

V

input voltage

[3]

−0.5

+7.0

V

output voltage

output in OFF or HIGH state

[3]

−0.5

+7.0

V

input clamping current

−50

-

mA

output clamping current

−50

-

mA

output current

output in LOW state

-

128

mA

output in HIGH state

−64

-

mA

storage temperature

−65

+150

°C

junction temperature

[2] -

150

°C

total power dissipation

[4] -

500

mW