IDT54FCT807BTD データシートの表示（PDF） - Integrated Device Technology
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IDT54FCT807BTD Datasheet PDF : 7 Pages
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IDT54/74FCT807BT/CT
FAST CMOS 1-TO-10 CLOCK DRIVER
TEST CIRCUITS
50Ω TO VCC/2, CL = 10pF
V CC
VIN
Pulse
Generator
D.U.T.
VOUT
RT
Figure 1.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
50Ω AC TERMINATION, CL = 10pF
V CC
V CC
100Ω
100Ω
10pF
VIN
Pulse
Generator
D.U.T.
RT
V OUT
50Ω
220pF
10pF
3017 drw 04
3017 drw 05
The capacitor value for ac termination is determined by the operating
frequency. For very low frequencies a higher capacitor value should be
selected.
Figure 2.
CL = 30pF CIRCUIT
V CC
CL = 50pF CIRCUIT
V CC
VIN
Pulse
Generator
V OUT
D.U.T.
RT
Figure 3.
30pF
CL
3017 drw 06
V IN
Pulse
Generator
V OUT
D.U.T.
RT
Figure 4.
50pF
CL
3017 drw 07
ENABLE AND DISABLE TIME CIRCUIT
ENABLE AND DISABLE TIME
SWITCH POSITION
V IN
Pulse
Generator
V CC
V OUT
D.U.T.
500Ω
50pF
RT
500Ω
CL
7.0V
Test
Switch
Disable LOW
Closed
Enable LOW
Disable HIGH
Open
Enable HIGH
DEFINITIONS:
3017 lnk 09
CL= Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse
Generator.
3017 drw 08
Figure 5.
9.3
5
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