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HD74ACT245のメーカーはHitachi Semiconductorです、この部品の機能は「Octal Bidirectional Transceiver with 3-State Input/Output」です。 |
部品番号 | HD74ACT245 |
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部品説明 | Octal Bidirectional Transceiver with 3-State Input/Output | ||
メーカ | Hitachi Semiconductor | ||
ロゴ | |||
このページの下部にプレビューとHD74ACT245ダウンロード(pdfファイル)リンクがあります。 Total 9 pages
HD74AC245/HD74ACT245
Octal Bidirectional Transceiver with 3-State Input/Output
Description
The HD74AC245/HD74ACT245 contains eight non-inverting bidirectional buffers with 3-state outputs and
is intended for bus-oriented applications. Current sinking capability is 24 mA at both the A and B ports.
The Transmit/Receive (T/R) input determines the direction of data flow through the bidirectional
transceiver. Transmit (active-High) enables data from A ports to B ports; Receive (active-Low) enables
data from B ports to A ports. The Output Enable input, when High, disables, both A and B ports by placing
them in a High Z condition.
Features
• Noninverting Buffers
• Bidirectional Data Path
• A and B Outputs Source/Sink 24 mA
• HD74ACT245 has TTL-Compatible Inputs
Pin Names
OE
T/R
A0 to A7
B0 to B7
Output Enable Input
Transmit/Receive Input
Side A 3-State Inputs or 3-State Outputs
Side B 3-State Inputs or 3-State Outputs
1 Page HD74AC245/HD74ACT245
DC Characteristics (unless otherwise specified)
Item
Maximum quiescent supply current
Symbol Max
ICC 80
Maximum quiescent supply current ICC
8.0
Maximum additional ICC/input
(HD74ACT245)
ICCT 1.5
Unit
µA
µA
mA
Condition
VIN = VCC or ground, VCC = 5.5 V,
Ta = Worst case
VIN = VCC or ground, VCC = 5.5 V,
Ta = 25°C
VIN = VCC – 2.1 V, VCC = 5.5 V,
Ta = Worst case
AC Characteristics: HD74AC245
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 5.0
1.0 3.5
Propagation delay
Data to output
t PHL
3.3
5.0
1.0 5.0
1.0 3.5
Output enable time
t PZH
3.3
5.0
1.0 7.0
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 6.5
1.0 5.5
Output disable time
t PLZ
3.3
5.0
1.0 7.0
1.0 5.5
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
8.5
6.5
8.5
6.0
11.5
8.5
12.0
9.0
12.0
9.0
11.5
9.0
Ta = –40°C to +85°C
CL = 50 pF
Min Max
1.0 9.0
1.0 7.0
1.0 9.0
1.0 7.0
1.0 12.5
1.0 9.0
1.0 13.5
1.0 9.5
1.0 12.5
1.0 10.0
1.0 13.0
1.0 10.0
Unit
ns
ns
ns
ns
ns
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 | ||
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PDF ダウンロード | [ HD74ACT245 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 |
HD74ACT240 | Octal Buffer/Line Driver with 3-State Output | Hitachi Semiconductor |
HD74ACT241 | Octal Buffer/Line Driver with 3-State Output | Hitachi Semiconductor |
HD74ACT244 | Octal Buffer/Line Driver with 3-State Output | Hitachi Semiconductor |
HD74ACT245 | Octal Bidirectional Transceiver with 3-State Input/Output | Hitachi Semiconductor |