HD74LVCR2245A 查看數據表（PDF） - Hitachi -> Renesas Electronics
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HD74LVCR2245A Datasheet PDF : 13 Pages
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HD74LVCR2245A
Test Circuit
(VCC = 1.8±0.15 V, VCC = 2.5±0.2 V)
VCC
VCC
OE
Input
Pulse generator
Zout = 50 Ω
T/R
S1
A0
B0
Output
CL =
30 pF
R1 S2
R2
50 Ω Scope
OPEN
2×VCC
GND
VCC (V)
1.8±0.15
2.5±0.2
R1
1 kΩ
500 Ω
R2
950 Ω
450 Ω
Symbol
tPLH / t PHL
tZH / t HZ
tZL / tLZ
S2
OPEN
GND
2×VCC
Note: 1. CL includes probe and jig capacitance.
7
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