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74LVC_LVCH245A

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Product data sheet

Rev. 8 — 28 June 2013

4 of 18

Nexperia

74LVC245A; 74LVCH245A

Octal bus transceiver; 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]

The minimum input voltage ratings may be exceeded if the input current ratings are observed.

[2]

The output voltage ratings may be exceeded if the output current ratings are observed.

[3]

For SO20 packages: above 70

C derate linearly with 8 mW/K.

For (T)SSOP20 packages: above 60

C derate linearly with 5.5 mW/K.

For DHVQFN20 and DHXQFN20 packages: above 60

C derate linearly with 4.5 mW/K.

Table 3.

Function selection[1]

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).

Symbol

Parameter

Conditions

Min

Max

Unit

VCC

supply voltage

0.5

+6.5

V

IIK

input clamping current

VI <0V

50

-

mA

VI

input voltage

[1]

0.5

+6.5

V

IOK

output clamping current

VO >VCC or VO <0V

-

50

mA

VO

output voltage

output HIGH or LOW

[2]

0.5

VCC +0.5

V

output 3-state

[2]

0.5

+6.5

V

IO

output current

VO =0V to VCC

-

50

mA

ICC

supply current

-

100

mA

IGND

ground current

100

-

mA

Tstg

storage temperature

65

+150

C

Ptot

total power dissipation

Tamb = 40 C to +125 C

[3] -500

mW