Nexperia

74LVC245A; 74LVCH245A

Octal bus transceiver; 3-state

5.2. Pin description

Table 2. Pin description

Symbol

Pin

Description

DIR

1

direction control

A0, A1, A2, A3, A4, A5, A6, A7

2, 3, 4, 5, 6, 7, 8, 9

data input/output

GND

10

ground (0 V)

B0, B1, B2, B3, B4, B5, B6, B7

18, 17, 16, 15, 14, 13, 12, 11

data input/output

OE

19

output enable input (active LOW)

VCC

20

supply voltage

6. Functional description

Table 3. Function selection

H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high impedance OFF-state.

Inputs

Inputs/outputs

OE

DIR

An

Bn

L

L

An = Bn

inputs

L

H

inputs

Bn = An

H

X

Z

Z

7. Limiting values

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 < 0 V

-50

-

mA

VI

input voltage

[1]

-0.5

+6.5

V

IOK

output clamping current

VO > VCC or VO < 0 V

-

±50

mA

output HIGH or LOW

[2]

-0.5

VCC + 0.5 V

VO

output voltage

output 3-state

[2]

-0.5

+6.5

V

IO

output current

VO = 0 V to VCC

-

±50

mA

ICC

supply current

-

100

mA

IGND

ground current

-100

-

mA

Tstg

storage temperature

-65

+150

°C

Tamb = -40 °C to +125 °C

SOT163-1; SOT360-1; SOT764-1 [3]

-

500

mW

Ptot

total power dissipation

SOT8020-1

-

250

mW

[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 SOT163-1 (SO20) package: Ptot derates linearly with 12.3 mW/K above 109 °C.

For SOT360-1 (TSSOP20) package: Ptot derates linearly with 10.0 mW/K above 100 °C.

For SOT764-1 (DHVQFN20) package: Ptot derates linearly with 12.9 mW/K above 111 °C.

74LVC_LVCH245A

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© Nexperia B.V. 2021. All rights reserved

Product data sheet

Rev. 12 — 16 September 2021

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