HD74LVCZ244AFP [ETC]
Dual 4-Bit Non-Inverting Buffer/Driver ; 双4位非反相缓冲器/驱动器\n
| 型号： | HD74LVCZ244AFP |
| 厂家： | 
ETC |
| 描述： | Dual 4-Bit Non-Inverting Buffer/Driver
|
| 文件： | 总11页 (文件大小：56K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
HD74LVCZ244A
Octal Buffers / Line Drivers with 3–state Outputs
ADE-205-230A (Z)
2nd. Edition
February 1999
Description
The HD74LVCZ244A has eight line drivers with three state outputs in a 20 pin package. This device is a
noninverting buffer and has two active low enables (1G and 2G). Each enable independently controls four
buffers.
When VCC is between 0 and 1.5 V, the device is in the high impedance state during power up or power
down.
Low voltage and high speed operation is suitable at battery drive product (note type personal computer) and
low power consumption extends the life of a battery for long time operation.
Features
•
•
•
•
•
•
•
•
VCC = 2.7 to 5.5 V
All inputs VIH (Max) = 5.5 V (@VCC = 0 to 5.5 V)
All outputs VO (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 impedance state during power up and power down
Power off disables outputs, permitting live insertion
High output current ±24 mA (@VCC = 3.0 to 5.5 V)
HD74LVCZ244A
Function Table
Inputs
Output Y
G
H
L
A
X
H
L
Z
H
L
L
H : High level
L : Low level
X : Immaterial
Z : High impedance
Pin Arrangement
1
2
3
4
5
6
7
8
9
20 VCC
1G
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
19
18
17
16
15
14
13
12
11
2G
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
2Y1
GND 10
(Top view)
2
HD74LVCZ244A
Absolute Maximum Ratings
Item
Symbol
Ratings
–0.5 to 7.0
–0.5 to 7.0
–0.5 to 7.0
–0.5 to VCC+0.5
–50
Unit Conditions
Supply voltage
Input voltage
Output voltage
VCC
VI
V
V
V
VO
Output “Z” or VCC : OFF
Output “H” or “L”
VI < 0
Input diode current
Output diode current
Output current
IIK
mA
mA
mA
mA
°C
IOK
–50
VO < 0
IO
±50
VCC, GND current
Storage temperature
ICC or IGND
Tstg
±100
–65 to 150
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.
Recommended Operating Conditions
Item
Symbol
VCC
Ratings
2.7 to 5.5
0 to 5.5
0 to 5.5
0 to VCC
–12
Unit Conditions
Supply voltage
Input voltage
Output voltage
V
V
V
At operation
VI
VO
Output “Z” or VCC : OFF
Output “H” or “L”
VCC = 2.7 V
Output current
IOH
mA
*1
–24
VCC = 3.0 to 5.5 V
VCC = 2.7 V
IOL
12
*1
24
VCC = 3.0 to 5.5 V
Input rise / fall time
tr, tf
Ta
0 to 6
ns / V
Operating temperature
Note: 1. Duty cycle ≤ 50%
–40 to +85
°C
3
HD74LVCZ244A
Logic Diagram
1
19
11
1G
2G
2
18
16
14
12
9
7
5
3
1A1
1Y1
1Y2
1Y3
1Y4
2A1
2Y1
2Y2
2Y3
2Y4
4
13
15
17
1A2
2A2
2A3
2A4
6
1A3
8
1A4
4
HD74LVCZ244A
Electrical Characteristics (Ta = –40 to 85°C)
Item
Symbol VCC (V)
Min
Typ
Max Unit Test Conditions
Input voltage
VIH
2.7 to 3.6 2.0
—
—
V
4.5 to 5.5 VCC×0.7 —
—
VIL
2.7 to 3.6 —
4.5 to 5.5 —
—
—
0.8
V
CC×0.3
Output voltage
VOH
2.7 to 5.5 VCC–0.2 —
—
V
IOH = –100 µA
2.7
3.0
3.0
4.5
2.2
2.4
2.2
3.8
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
IOH = –12 mA
—
—
IOH = –24 mA
—
VOL
2.7 to 5.5 —
0.2
0.4
0.55
0.55
±5
IOL = 100 µA
IOL = 12 mA
IOL = 24 mA
2.7
—
—
—
—
3.0
4.5
Input current
Off state output current IOZ
IOZPU
IIN
0 to 5.5
µA
µA
VIN = 0 to 5.5 V
2.7 to 5.5 —
±5
VOUT = 0 to 5.5 V
0 to 1.5
1.5 to 0
0
—
—
—
±5
VOUT = 0.5 to 5.5 V,
Output enable = don’t care
VIN or VO = 5.5 V
IOZPD
IOFF
ICC
±5
Output leak current
Quiescent supply
current
±5
µA
µA
2.7 to 3.6 —
2.7 to 5.5 —
2.7 to 3.6 —
225
350
500
VIN = 3.6 to 5.5 V *1, IO = 0
VIN = VCC or GND
∆ICC
VIN = one input at (VCC–0.6) V,
other inputs at VCC or GND
Input capacitance
Output capacitance
CIN
CO
3.3
3.3
—
—
3.4
7.5
—
—
pF
pF
VIN = VCC or GND
VOUT = VCC or GND
Note: 1. This applies in the disabled state only.
5
HD74LVCZ244A
Switching Characteristics (Ta = –40 to 85°C)
Item
Symbol VCC (V) Min
Typ
Max
Unit FROM
(Input)
TO
(Output)
Propagation delay time
tPLH
tPHL
2.7
—
—
—
—
—
—
—
—
—
—
—
—
—
6.9
5.9
4.5
8.6
7.6
6.1
6.8
6.5
5.5
—
ns
ns
ns
ns
A
Y
Y
Y
3.3±0.3 1.5
5.0±0.5
—
—
Output enable time
tZH
tZL
2.7
G
G
3.3±0.3 1.5
5.0±0.5
—
—
Output disable time
Between output pin skew
tHZ
tLZ
2.7
3.3±0.3 1.5
5.0±0.5
2.7
—
—
—
—
*1
tOSLH
tOSHL
3.3±0.3
5.0±0.5
1.0
1.0
Note : 1. This parameter is characterized but not tested.
tOSLH = |tPLHm–tPLHn|, tOSHL = |tPHLm–tPHLn
|
Test Circuit
VCC
VCC
Output
1G, 2G
1Y1 to 2Y4
1A1 to 2A4
Ω
500
OPEN
Input
S1
*1 See
under table
Ω
450
CL=
50 pF
Pulse generator
GND
Zout
Ω
= 50
Ω
50 Scope
S1
Symbol
Vcc=2.7V,
3.3±0.3V
Vcc=5.0±0.5V
OPEN
GND
tPLH/ tPHL
tZH/ tHZ
tZL / tLZ
OPEN
GND
6 V
2×VCC
Note: 1. CL includes probe and jig capacitance.
6
HD74LVCZ244A
• Waveforms – 1
tr
tf
V
IH
90 %
Vref
90 %
Vref
Input A
10 %
10 %
GND
tPHL
tPLH
VOH
Output Y
Vref
Vref
VOL
• Waveforms – 2
tf
tr
V
IH
90 %
Vref
90 %
Vref
Input G
10 %
tZL
10 %
GND
tLZ
≈VOH1
VOL
Vref
tZH
Waveform – A
Waveform – B
VOL + 0.3 V
VOH– 0.3 V
tHZ
VOH
Vref
≈VOL1
Vcc=2.7V,
3.3±0.3V
Vcc=5.0±0.5V
TEST
V
VCC
50%VCC
VCC
2.7 V
IH
V
1.5 V
3 V
ref
VOH1
VOL1
GND
GND
Notes: 1. Input waveform : PRR = 10 MHz, duty cycle 50%, tr = 2.5 ns, tf = 2.5 ns
2. Waveform – A shows input conditions such that the output is “L” level
when enabled by the output control.
3. Waveform – B shows input conditions such that the output is “H” level
when enabled by the output control.
7
HD74LVCZ244A
Power up / down Characteristics
4.0
3.0
2.0
1.0
Ta = 25°C
Output enable = “L”
Disable area
Enable area
0
0
1.0
2.0
3.0
4.0
VCC (V)
8
HD74LVCZ244A
Package Dimensions
Unit : mm
12.6
13 Max
11
10
20
1
+ 0.20
7.80
– 0.30
0.80 Max
1.15
0° – 8°
1.27
0.70 ± 0.20
0.42 ± 0.08
0.40 ± 0.06
0.15
M
0.12
Hitachi Code
JEDEC
FP-20DA
—
EIAJ
Conforms
Dimension including the plating thickness
Base material dimension
Weight (reference value) 0.31 g
9
HD74LVCZ244A
6.50
6.80 Max
20
1
11
10
0.65
1.0
+0.08
–0.07
0.22
0.13
M
0.20 ± 0.06
6.40 ± 0.20
0.65 Max
0° – 8°
0.50 ± 0.10
0.10
Hitachi Code
TTP-20DA
JEDEC
EIAJ
—
—
Dimension including the plating thickness
Base material dimension
Weight (reference value) 0.07 g
10
Cautions
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intellectual property rights, in connection with use of the information contained in this document.
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received the latest product standards or specifications before final design, purchase or use.
3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However,
contact Hitachi’s sales office before using the product in an application that demands especially high
quality and reliability or where its failure or malfunction may directly threaten human life or cause risk
of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation,
traffic, safety equipment or medical equipment for life support.
4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly
for maximum rating, operating supply voltage range, heat radiation characteristics, installation
conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used
beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable
failure rates or failure modes in semiconductor devices and employ systemic measures such as fail-
safes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other
consequential damage due to operation of the Hitachi product.
5. This product is not designed to be radiation resistant.
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products.
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