TC74AC245F 데이터 시트보기 (PDF) - Toshiba
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TC74AC245F Datasheet PDF : 9 Pages
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TC74AC245,640P/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 ―
7.0 10.9 1.0 12.4
―
ns
5.0 ± 0.5 ―
5.0 7.5 1.0 8.5
Propagation delay
tpLH
time
(Note 3)
tpHL
3.3 ± 0.3 ―
6.4 10.0 1.0 11.4
―
ns
5.0 ± 0.5 ―
4.8 7.0 1.0 8.0
Output enable time
tpZL
tpZH
3.3 ± 0.3 ―
9.3 15.3 1.0 17.4
―
ns
5.0 ± 0.5 ―
7.1 10.5 1.0 12.0
Output disable time
tpLZ
tpHZ
3.3 ± 0.3 ―
7.1 11.4 1.0 13.0
―
ns
5.0 ± 0.5 ―
5.9 8.7 1.0 10.0
Input capacitance
CIN
DIR, G
―
5
10
―
10
pF
Bus input capacitance
CI/O
An, Bn
―
13
―
―
―
pF
Power dissipation
capacitance
CPD
TC74AC245
(Note 1) TC74AC640
―
38
―
―
―
pF
―
36
―
―
―
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 TC74AC245 only
Note 3: For TC74AC640 only
5
2007-10-01
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