TC74AC240P 查看數據表（PDF） - Toshiba

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TC74AC240P

CMOS Digital Integrated Circuit Silicon Monolithic

Toshiba 

TC74AC240,244P/F/ FT

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

Characteristics

Symbol

Test Condition

Ta = 25°C

Ta =

−40 to 85°C Unit

VCC (V) Min Typ. Max Min Max

Propagation delay

tpLH

time

(Note 2)

tpHL

3.3 ± 0.3 ―

6.3 10.5 1.0 12.0

―

ns

5.0 ± 0.5 ―

4.8 7.0 1.0 8.0

Propagation delay

tpLH

time

(Note 3)

tpHL

3.3 ± 0.3 ―

7.0 11.4 1.0 13.0

―

ns

5.0 ± 0.5 ―

5.2 7.5 1.0 8.5

Output enable time

tpZL

tpZH

3.3 ± 0.3 ―

8.4 14.0 1.0 16.0

―

ns

5.0 ± 0.5 ―

5.9 8.7 1.0 10.0

Output disable time

tpLZ

tpHZ

3.3 ± 0.3 ―

6.4 10.5 1.0 12.0

―

ns

5.0 ± 0.5 ―

5.5 7.9 1.0 9.0

Input capacitance

CIN

―

―

5

10

―

10

pF

Output capacitance

COUT

―

―

10

―

―

―

pF

Power dissipation

capacitance

CPD

(Note 1) ―

30

―

―

―

pF

Note 1: 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/8 (per bit)

Note 2: For TC74AC240 only

Note 3: For TC74AC244 only

5

2007-10-01

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