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HD74HC643 データシートの表示(PDF) - Hitachi -> Renesas Electronics
部品番号
コンポーネント説明
メーカー
HD74HC643
Octal Bus Transceivers (with 3-state outputs)
Hitachi -> Renesas Electronics
HD74HC643 Datasheet PDF : 11 Pages
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HD74HC640/HD74HC643
AC Characteristics
(C
L
= 50 pF, Input t
r
= t
f
= 6 ns)
Ta = 25
°
C
Ta = –40 to
+85
°
C
Item
Symbol
Propagation delay t
PLH
time
t
PHL
V
CC
(V)
2.0
4.5
6.0
Min Typ Max Min
— — 90 —
— 12 18 —
— — 15 —
Max Unit
115 ns
23
20
Output enable
t
ZH
time
t
ZL
2.0
— — 230 — 290 ns
4.5
— 15 46 — 58
6.0
— — 39 — 49
Output disable
t
HZ
time
t
LZ
2.0
— — 215 — 270 ns
4.5
— 17 43 — 54
6.0
— — 37 — 46
Output rise/fall
t
TLH
time
t
THL
2.0
— — 60 — 75 ns
4.5
— 4 12 — 15
6.0
— — 10 — 13
Input capacitance Cin
—
— 5 10 — 10 pF
Test Conditions
7
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