74HC_HCT238

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© NXP Semiconductors N.V. 2016. All rights reserved.

Product data sheet

Rev. 4 — 27 January 2016

5 of 19

NXP Semiconductors

74HC238; 74HCT238

3-to-8 line decoder/demultiplexer

6.

Functional description

[1]

H = HIGH voltage level;

L = LOW voltage level;

X = don’t care.

7.

Limiting values

[1]

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

[2]

For SO16 package: above 70

C the value of P

tot derates linearly at 8 mW/K.

For SSOP16 and TSSOP16 packages: above 60

C the value of P

tot derates linearly at 5.5 mW/K.

For DHVQFN16 package: above 60

C the value of P

tot derates linearly at 4.5 mW/K.

Table 3.

Function table[1]

Inputs

Outputs

E1

E2

E3

A0

A1

A2

Y0

Y1

Y2

Y3

Y4

Y5

Y6

Y7

H

X

X

X

X

X

LL

LLL

LLL

XH

XXX

XL

L

L

L

L

L

L

L

X

X

LX

X

X

LL

LLL

LLL

LL

H

LL

LH

L

LLL

LLL

LL

H

H

L

LLH

LLL

LLL

LL

H

LH

LLL

H

LL

LLL

LL

H

H

H

LLL

LH

L

LLL

LL

H

LL

H

LL

LLH

LLL

L

L

HHL

HL

L

L

L

L

HL

L

LL

H

LH

H

LL

LLL

LH

L

LL

H

H

H

H

LL

LLL

LLH

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

+7

V

IIK

input clamping current

VI < 0.5 V or VI >VCC +0.5 V

[1]

-

20

mA

IOK

output clamping current

VO < 0.5 V or VO >VCC +0.5 V

[1]

-

20

mA

IO

output current

0.5 V < V

O < VCC +0.5 V

-

25

mA

ICC

supply current

-

50

mA

IGND

ground current

50

-

mA

Tstg

storage temperature

65

+150

C

Ptot

total power dissipation

SO16, (T)SSOP16 and DHVQFN16

packages

[2]

-500

mW