74HCT154DB,118 データシートの表示（PDF） - NXP Semiconductors.
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74HCT154DB,118 Datasheet PDF : 21 Pages
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NXP Semiconductors
74HC154; 74HCT154
4-to-16 line decoder/demultiplexer
VI 90 %
tW
negative
pulse
VM
10 %
0V
tf
VI
positive
pulse
tr
90 %
VM
10 %
0V
tW
VM
tr
tf
VM
PULSE
VI
GENERATOR
VCC
VO
DUT
RT
VCC
RL S1
CL
open
001aad983
Test data is given in Table 10.
Definitions for test circuit:
RT = Termination resistance; should be equal to output impedance Zo of the pulse generator.
CL = Load capacitance including jig and probe capacitance.
RL = Load resistor.
S1 = Test selection switch.
Fig 9. Load circuitry for measuring switching times
Table 10. Test data
Type
Input
74HC154
74HCT154
VI
tr, tf
VCC
6 ns
3V
6 ns
Load
CL
15 pF, 50 pF
15 pF, 50 pF
RL
1 kΩ
1 kΩ
S1 position
tPHL, tPLH
open
open
74HC_HCT154_6
Product data sheet
Rev. 06 — 12 February 2007
© NXP B.V. 2007. All rights reserved.
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