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參數(shù)資料
| 型號(hào)： | HD74HCT449 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Octal D-Type Transparent Latches with 3-state Outputs 20-CDIP -55 to 125 |
| 中文描述： | 四。總線收發(fā)器與個(gè)人的方向控制 |
| 文件頁(yè)數(shù)： | 4/8頁(yè) |
| 文件大?。?/td> | 48K |
| 代理商： | HD74HCT449 |
HD74HCT449
4
AC Characteristics
(C
L
= 50 pF, Input t
r
= t
f
= 6 ns)
Ta = 25
°
C
Ta = –40 to
+85
°
C
Test Conditions
Item
Symbol
Min Typ Max Min
Max
Unit
V
CC
(V)
4.5
Propagation delay t
PHL
time
—
14
25
—
31
ns
t
PLH
t
ZL
t
ZH
t
LZ
t
HZ
t
TLH
t
THL
Cin
—
11
25
—
31
4.5
Output enable
—
18
30
—
39
ns
4.5
time
—
14
30
—
39
4.5
Output disable
—
17
30
—
39
ns
4.5
time
—
16
30
—
39
4.5
Output rise/fall
—
4
12
—
15
ns
4.5
time
—
4
12
—
15
4.5
Input capacitance
—
5
10
—
10
pF
—
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|---|---|
| HD74HCT540 | Octal D-Type Transparent Latches with 3-state Outputs 20-CDIP -55 to 125 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD74HCT534P | 制造商:Renesas Electronics Corporation 功能描述:Flip Flop D-Type Bus Interface Pos-Edge 3-ST 1-Element 20-Pin PDIP |
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| HD74HCT574FP-E | 制造商:Renesas Electronics Corporation 功能描述:Flip Flop D-Type Bus Interface Pos-Edge 3-ST 1-Element 20-Pin SOP |
| HD74L | 制造商:Panasonic Industrial Company 功能描述:IC |
| HD74LS00FP | 制造商:Renesas Electronics 功能描述:74LS |
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