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HD74AC244のメーカーはHitachi Semiconductorです、この部品の機能は「Octal Buffer/Line Driver with 3-State Output」です。 |
部品番号 | HD74AC244 |
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部品説明 | Octal Buffer/Line Driver with 3-State Output | ||
メーカ | Hitachi Semiconductor | ||
ロゴ | |||
このページの下部にプレビューとHD74AC244ダウンロード(pdfファイル)リンクがあります。 Total 9 pages
HD74AC244/HD74ACT244
Octal Buffer/Line Driver with 3-State Output
Description
The HD74AC244/HD74ACT244 is an octal buffer and line driver designed to be employed as a memory
address driver, clock driver and bus-oriented transmitter/receive which provides improved PC board
density.
Features
• 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers
• Outputs Source/Sink 24 mA
• HD74ACT244 has TTL-Compatible Inputs
Pin Arrangement
OE1 1
2
3
4
5
6
7
8
9
GND 10
(Top view)
20 VCC
19 OE2
18
17
16
15
14
13
12
11
1 Page HD74AC244/HD74ACT244
AC Characteristics: HD74AC244
Item
Propagation delay
Data to output
Symbol
t PLH
VCC (V)*1
3.3
5.0
Ta = +25°C
CL = 50 pF
Min Typ
1.0 6.5
1.0 5.0
Propagation delay
Data to output
t PHL
3.3
5.0
1.0 6.5
1.0 5.0
Output enable time
t PZH
3.3
5.0
1.0 6.0
1.0 5.0
Output enable time
t PZL
3.3
5.0
1.0 7.5
1.0 5.5
Output disable time
t PHZ
3.3
5.0
1.0 7.0
1.0 6.5
Output disable time
t PLZ
3.3
5.0
1.0 7.5
1.0 6.5
Note: 1. Voltage Range 3.3 is 3.3 V ± 0.3 V
Voltage Range 5.0 is 5.0 V ± 0.5 V
Max
9.0
7.0
9.0
7.0
10.5
7.0
10.0
8.0
10.0
9.0
10.5
9.0
Ta = –40°C to +85°C
CL = 50 pF
Min Max
1.0 10.0
1.0 7.5
1.0 10.0
1.0 7.5
1.0 11.0
1.0 8.0
1.0 11.0
1.0 8.5
1.0 10.5
1.0 9.5
1.0 11.5
1.0 9.5
Unit
ns
ns
ns
ns
ns
ns
AC Characteristics: HD74ACT244
Item
Propagation delay
Data to output
Symbol VCC (V)*1
tPLH 5.0
Ta = +25°C
CL = 50 pF
Min Typ
1.0 6.5
Propagation delay
Data to output
t PHL
5.0
1.0 7.0
Output enable time
t PZH
5.0
Output enable time
t PZL
5.0
Output disable time
t PHZ
5.0
Output disable time
t PLZ
5.0
Note: 1. Voltage Range 5.0 is 5.0 V ± 0.5 V
1.0
1.0
1.0
1.0
6.0
7.0
7.0
7.5
Max
9.0
9.0
8.5
9.5
9.5
10.0
Ta = –40°C to +85°C
CL = 50 pF
Min Max
1.0 10.0
Unit
ns
1.0 10.0 ns
1.0 9.5 ns
1.0 10.5 ns
1.0 10.5 ns
1.0 10.5 ns
3
3Pages 12.6
13 Max
20 11
1
0.80 Max
10
1.27
*0.42 ± 0.08
0.40 ± 0.06
0.15
0.12 M
*Dimension including the plating thickness
Base material dimension
Unit: mm
7.80
+
–
0.20
0.30
1.15
0.70 ± 0.20
0° – 8°
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
FP-20DA
—
Conforms
0.31 g
6 Page | |||
ページ | 合計 : 9 ページ | ||
|
PDF ダウンロード | [ HD74AC244 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
HD74AC240 | Octal Buffer/Line Driver with 3-State Output | Hitachi Semiconductor |
HD74AC241 | Octal Buffer/Line Driver with 3-State Output | Hitachi Semiconductor |
HD74AC244 | Octal Buffer/Line Driver with 3-State Output | Hitachi Semiconductor |
HD74AC245 | Octal Bidirectional Transceiver with 3-State Input/Output | Hitachi Semiconductor |