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TC74ACT157FN

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

Toshiba 

TC74ACT157P/F/FN/FT

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

Characteristics

Propagation delay

time

(A, B-Y)

Symbol

tpLH

tpHL

Test Condition

Ta = 25°C

Ta =

−40 to 85°C Unit

VCC (V) Min Typ. Max Min Max

―

5.0 ± 0.5 ―

5.5 8.0 1.0 9.1

ns

Propagation delay

time

tpLH

(SELECT-Y)

tpHL

―

5.0 ± 0.5 ―

6.9 11.4 1.0 13.0 ns

Propagation delay

time

tpLH

( ST -Y)

tpHL

―

5.0 ± 0.5 ―

6.8 10.8 1.0 12.3 ns

Input capacitance

CIN

―

Power dissipation

CPD

capacitance

―

(Note)

―

5

10

―

10

pF

―

51

―

―

―

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/4 (per bit)

5

2007-10-01

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