IN74LS245DW データシートの表示（PDF） - IK Semicon Co., Ltd
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IN74LS245DW Datasheet PDF : 5 Pages
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IN74LS245
AC ELECTRICAL CHARACTERISTICS (TA = 25°C, VCC = 5.0 V, tr = 15 ns,,
tf = 6.0 ns)
Symbol
Parameter
Test Condition
Min Max Unit
tPLH Propagation Delay Time, Low-to-High
Level Output (from A or B to Output)
12
ns
tPHL Propagation Delay Time, High-to-Low
Level Output (from A or B to Output)
CL = 45 pF,
RL = 667 Ω
12
ns
tPZH Output Enable Time to High Level (from
OE to Output)
40
ns
tPZL Output Enable Time to Low Level (from OE
to Output)
40
ns
tPHZ Output Disable Time from High Level
(from OE to Output)
CL = 5 pF
25
ns
tPLZ Output Disable Time from Low Level
(from OE to Output)
RL = 667 Ω
25
ns
Figure 1. Switching Waveforms
(See Figure 3)
tPZL - S1 closed, S2 opened
tPZH- S1 opened, S2 closed
tPLZ, tPHZ - S1 and S2 closed
Figure 2. Switching Waveforms
(See Figure 4)
NOTES A. CL includes probe and jig capacitance.
B. All diodes are 1N916 or 1N3064.
Figure 3. Test Circuit
NOTES A. CL includes probe and jig capacitance.
B. All diodes are 1N916 or 1N3064.
Figure 4. Test Circuit
Rev. 00
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