TC74ACT138F datasheet(4/9 Pages) TOSHIBA

Part #	TC74ACT138F

Description	CMOS Digital Integrated Circuit Silicon Monolithic 3-to-8 Line Decoder

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Manufacturer	TOSHIBA [Toshiba Semiconductor]

Direct Link	http://www.semicon.toshiba.co.jp/eng

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4 / 9 page

TC74ACT138P/F/FN/FT

2007-10-01

4

Electrical Characteristics

DC Characteristics

Test Condition

Ta = 25°C

Ta = −40 to

85°C

Characteristics

Symbol

VCC

(V)

Min

Typ.

Max

Min

Max

Unit

High-level input

voltage

VIH

―

4.5

to

5.5

2.0

―

2.0

―

V

Low-level input

voltage

VIL

―

4.5

to

5.5

―

0.8

―

0.8

V

High-level output

voltage

VOH

VIN

= VIH or

VIL

IOH = −50 μA

IOH = −24 mA

IOH = −75 mA (Note)

4.5

5.5

4.4

3.94

―

4.5

―

4.4

3.80

3.85

―

V

Low-level output

voltage

VOL

VIN

= VIH or

VIL

IOL = 50 μA

IOL = 24 mA

IOL = 75 mA

(Note)

4.5

5.5

―

0.0

―

0.1

0.36

―

0.1

0.44

1.65

V

Input leakage

current

IIN

VIN = VCC or GND

5.5

―

±0.1

―

±1.0

μA

ICC

VIN = VCC or GND

5.5

―

8.0

―

80.0

μA

Quiescent supply

current

IC

Per input: VIN = 3.4 V

Other input: VCC or GND

5.5

―

1.35

―

1.5

mA

Note:

This spec indicates the capability of driving 50 Ω transmission lines.

One output should be tested at a time for a 10 ms maximum duration.

AC Characteristics (CL = 50 pF, RL = 500 Ω, input: tr = tf = 3 ns)

Test Condition

Ta = 25°C

Ta = −40 to

85°C

Characteristics

Symbol

VCC (V)

Min

Typ.

Max

Min

Max

Unit

Propagation delay

time

(A, B, C- Y)

tpLH

tpHL

―

5.0 ± 0.5

―

6.7

10.1

1.0

11.5

ns

Propagation delay

time

(G1- Y)

tpLH

tpHL

―

5.0 ± 0.5

―

6.8

10.5

1.0

12.0

ns

Propagation delay

time

( 2

G- Y)

tpLH

tpHL

―

5.0 ± 0.5

―

6.9

11.0

1.0

12.5

ns

Input capacitance

CIN

―

5

10

―

10

pF

Power dissipation

capacitance

CPD

(Note)

―

55

―

pF

Note:

CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating

current consumption without load.

Average operating current can be obtained by the equation:

ICC (opr) = CPD·VCC·fIN + ICC

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TC74ACT138F Datasheet(PDF) 4 Page - Toshiba Semiconductor

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