SN54LVC138A, SN74LVC138A

3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS

SCAS291I – MARCH 1993 – REVISED OCTOBER 1998

5

POST OFFICE BOX 655303

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

V

SN54LVC138A

SN74LVC138A

UNIT

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP†

MAX

MIN

TYP†

MAX

UNIT

IOH = 100 µA

1.65 V to 3.6 V

VCC–0.2

IOH = –100 µA

2.7 V to 3.6 V

VCC–0.2

IOH = –4 mA

1.65 V

1.2

VOH

IOH = –8 mA

2.3 V

1.7

V

IOH =12 mA

2.7 V

2.2

2.2

IOH = –12 mA

3 V

2.4

2.4

IOH = –24 mA

3 V

2.2

2.2

IOL = 100 µA

1.65 V to 3.6 V

0.2

IOL = 100 µA

2.7 V to 3.6 V

0.2

VOL

IOL = 4 mA

1.65 V

0.45

V

VOL

IOL = 8 mA

2.3 V

0.7

V

IOL = 12 mA

2.7 V

0.4

0.4

IOL = 24 mA

3 V

0.55

0.55

II

VI = 5.5 V or GND

3.6 V

±5

±5

µA

ICC

VI = VCC or GND,

IO = 0

3.6 V

10

10

µA

∆ICC

One input at VCC – 0.6 V,

Other inputs at VCC or GND

2.7 V to 3.6 V

500

500

µA

Ci

VI = VCC or GND

3.3 V

5

5

pF

† All typical values are at VCC = 3.3 V, TA = 25°C.

switching characteristics over recommended operating free-air temperature range (unless

otherwise noted) (see Figure 3)

SN54LVC138A

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 2.7 V

VCC = 3.3 V

± 0.3 V

UNIT

MIN

MAX

MIN

MAX

A or B or C

7.9

1

6.7

tpd

G2A or G2B

Y

7.4

1

6.5

ns

G1

6.4

1

5.8

switching characteristics over recommended operating free-air temperature range (unless

otherwise noted) (see Figures 1 through 3)

SN74LVC138A

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 1.8 V

VCC = 2.5 V

± 0.2 V

VCC = 2.7 V

VCC = 3.3 V

± 0.3 V

UNIT

TYP

MIN

MAX

MIN

MAX

MIN

MAX

A or B or C

15.9

1

9.9

7.9

1

6.7

tpd

G2A or G2B

Y

15.4

1

9.4

7.4

1

6.5

ns

G1

14.4

1

8.4

6.4

1

5.8

tsk(o)‡

1

ns

‡ Skew between any two outputs of the same package switching in the same direction