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HD74LVC244 PDF даташит

Спецификация HD74LVC244 изготовлена ​​​​«Hitachi Semiconductor» и имеет функцию, называемую «Octal Buffers / Line Drivers with 3-state Outputs».

Детали детали

Номер произв HD74LVC244
Описание Octal Buffers / Line Drivers with 3-state Outputs
Производители Hitachi Semiconductor
логотип Hitachi Semiconductor логотип 

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HD74LVC244 Даташит, Описание, Даташиты
HD74LVC244A
Octal Buffers / Line Drivers with 3-state Outputs
ADE-205-110B(Z)
3rd Edition
December 1996
Description
The HD74LVC244A has eight line drivers with three state outputs in a 20 pin package. This device is a
non inverting buffer and has two active low enables (1G and 2G). Each enable independently controls four
buffers. Low voltage and high speed operation is suitable at the battery drive product (note type personal
computer) and low power consumption extends the life of a battery for long time operation.
Features
VCC = 2.0 V to 5.5 V
All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V)
All outputs VOUT (Max.) = 5.5 V (@VCC = 0 V or output off state)
Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C)
Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C)
High output current ±24 mA (@VCC = 3.0 V to 5.5 V)
Function Table
Inputs
GA
HX
LH
LL
H : High level
L : Low level
X : Immaterial
Z : High impedance
Output Y
Z
H
L









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HD74LVC244 Даташит, Описание, Даташиты
HD74LVC244A
Pin Arrangement
1G 1
1A1 2
2Y4 3
1A2 4
2Y3 5
1A3 6
2Y2 7
1A4 8
2Y1 9
GND 10
20 VCC
19 2G
18 1Y1
17 2A4
16 1Y2
15 2A3
14 1Y3
13 2A2
12 1Y4
11 2A1
(Top view)
Absolute Maximum Ratings
Item
Symbol
Ratings
Unit Conditions
Supply voltage
Input diode current
Input voltage
Output diode current
VCC
I IK
VI
I OK
Output voltage
VO
Output current
VCC, GND current / pin
Storage temperature
IO
ICC or IGND
Tstg
–0.5 to 6.0
–50
–0.5 to 6.0
–50
50
–0.5 to VCC +0.5
–0.5 to 6.0
±50
100
–65 to 150
V
mA
V
mA
mA
V
V
mA
mA
°C
VI = –0.5 V
VO = –0.5 V
VO = VCC +0.5 V
Output "H" or "L"
Output "Z" VCC:OFF
Note: The absolute maximum ratings are values which must not individually be exceeded, and furthermore,
no two of which may be realized at the same time.
2









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HD74LVC244 Даташит, Описание, Даташиты
HD74LVC244A
Recommended Operating Conditions
Item
Symbol
Ratings
Unit
Supply voltage
VCC 1.5 to 5.5
2.0 to 5.5
V
V
Input / output voltage
VI
VO
0 to 5.5
0 to VCC
0 to 5.5
V
V
V
Operating temperature Ta
–40 to 85
°C
Output current
IOH –12
–24*2
mA
mA
IOL 12
24*2
mA
mA
Input rise / fall time *1
tr, tf
10
ns/V
Notes: 1. This item guarantees maximum limit when one input switches.
Waveform : Refer to test circuit of switching characteristics.
2. duty cycle 50%
Conditions
Data retention
At operation
G, A
Output "H" or "L"
Output "Z" or VCC:OFF
VCC = 2.7 V
VCC = 3.0 V to 5.5 V
VCC = 2.7 V
VCC = 3.0 V to 5.5 V
3










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