U74LVC244G-P20-R [UTC]
OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS; 八路缓冲器/驱动器，具有三态输出
| 型号： | U74LVC244G-P20-R |
| 厂家： | 
Unisonic Technologies |
| 描述： | OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS |
| 文件： | 总6页 (文件大小：177K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
U74LVC244
CMOS IC
OCTAL BUFFER/DRIVER WITH
3-STATE OUTPUTS
DESCRIPTION
The UTC U74LVC244 contains two 4-bit line drivers with
separate output-enable ( OE ) inputs. When OE is low, the
device passes data from the A to the Y. When OE is high, the
outputs are in the high-impedance state.
The UTC U74LVC244 can be used in a mixed 3.3V/5V system
environment.
FEATURES
* Operate From 1.65V to 3.6V
* Input Accept Voltages to 5.5V
* Partial-Power-Down Mode Operation
* Max tpd is 5.9ns at 3.3V
ORDERING INFORMATION
Ordering Number
Lead Free
Package
Packing
Halogen Free
Tape Reel
Tape Reel
U74LVC244L-S20-R
U74LVC244L-P20-R
U74LVC244G-S20-R
U74LVC244G-P20-R
SOP-20
TSSOP-20
www.unisonic.com.tw
Copyright © 2011 Unisonic Technologies Co., Ltd
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U74LVC244
CMOS IC
PIN CONFIGURATION
1
2
VCC
20
1OE
1A1
2Y4
19 2OE
18 1Y1
3
2A4
17
4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
5
16 1Y2
2A3
15
6
7
14 1Y3
8
13
2A2
12 1Y4
11 2A1
9
10
FUNCTION TABLE (each gate)
INPUT(OE)
INPUT(A)
OUTPUT(Y)
H
L
L
X
H
L
Z
H
L
LOGIC DIAGRAM (Positive Logic)
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U74LVC244
CMOS IC
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
VCC
RATINGS
-0.5~6.5
-0.5~ 6.5
-0.5~6.5
-0.5~VCC+0.5
-50
UNIT
V
Supply Voltage
Input Voltage
VIN
V
Voltage applied to output in high-impedance or power-off state
Voltage applied to output in high or low state
Input Clamp Current
VOUT
V
IIK
IOK
IOUT
ICC
mA
mA
mA
mA
Output Clamp Current
-50
Output Current
±50
VCC or GND Current
±100
SOP-20
500
Power dissipation
TSSOP-20
mW
450
PD
SOP-20
Derate above Ta>60°C
7
mW/K
TSSOP-20
6.1
Operating Temperature
Storage Temperature
TOPR
TSTG
-40~ +125
-65 ~ +150
°C
°C
Note:
1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
VCC
CONDITIONS
Operating
MIN
TYP
MAX
3.6
UNIT
V
1.65
Supply Voltage
Data retention only
1.5
V
Input Voltage
VIN
0
0
5.5
V
Output Voltage
VOUT
VCC
V
VCC=1.65V to 1.95V
VCC=2.3V to 2.7V
VCC=2.7V to 3.6V
VCC=1.65V to 1.95V
VCC=2.3V to 2.7V
0.65×VCC
1.7
V
V
High-Level Input Voltage
Low-Level Input Voltage
VIH
2
V
V
0.35×VCC
0.7
VIL
V
VCC=2.7V to 3.6V
0.8
V
-4
VCC=1.65V
VCC=2.3V
VCC=2.7V
mA
mA
mA
-8
High-Level Output Current
Low-Level Output Current
IOH
-12
-24
VCC=3V
mA
mA
mA
mA
mA
VCC=1.65V
VCC=2.3V
VCC=2.7V
4
8
IOL
12
24
VCC=3V
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U74LVC244
CMOS IC
ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
TEST CONDITIONS
VCC=1.65V to 3.6V, IOH=-100uA
VCC=1.65V, IOH=-4mA
MIN
VCC-0.2
1.29
1.9
TYP
MAX UNIT
VCC=2.3V, IOH=-8mA
High-Level Output Voltage
Low-Level Output Voltage
VOH
V
VCC=2.7V, IOH=-12mA
2.2
VCC=3V, IOH=-12mA
2.4
VCC=3V, IOH=-24mA
2.3
VCC=1.65V to 3.6V, IOH=100uA
VCC= 1.65V, IOH=4mA
0.1
0.24
VOL
V
VCC=2.3V, IOH=8mA
0.3
0.4
0.55
±1
±1
±1
1
VCC=2.7V, IOH=12mA
VCC=3V, IOH=24mA
Input Leakage Current
II(LEAK)
IOFF
VCC=3.6V, VIN=5.5 V or GND
VCC=0V, VIN or VOUT=5.5V
VCC=3.6V, VOUT=0 or GND
VCC=3.6V ,VIN=VCC or GND, IOUT=0
uA
uA
uA
Power OFF Leakage Current
Output OFF-State Current
IOZ
Quiescent Supply Current
IQ
uA
uA
VCC=3.6V ,3.6V≦VIN≦5.5V, IOUT=0
1
Additional Quiescent Supply
Current
VCC=2.7V to 3.6V, One input at
ΔIQ
500
VCC-0.6V,Other inputs at VCC or GND
Input Capacitance
Output Capacitance
CI
VCC=3.3V, VIN=VCC or GND
VCC=3.3V, VOUT=VCC or GND
4
pF
pF
CO
5.5
SWITCHING CHARACTERISTICS
PARAMETER
SYMBOL
tpd
TEST CONDITIONS
VCC=1.5V
MIN
1
TYP
7
MAX UNIT
14.4
VCC=1.8V±0.15V
VCC=2.5V±0.2V
VCC=2.7V
1
5.9
4.2
4.2
3.9
8.3
6.4
4.6
5
10.4
From Input(A) to Output(Y)
From Input(OE) to Output(Y)
From Input(OE) to Output(Y)
ns
ns
ns
1
7.4
6.7
1
VCC=3.3V±0.3V
1.5
1
5.7
VCC=1.5V
17.8
12.1
9.1
VCC=1.8V±0.15V
VCC=2.5V±0.2V
VCC=2.7V
1
ten
1
1
8.4
VCC=3.3V±0.3V
VCC=1.5V
1.5
1
4.5
7.2
5.8
3.7
3.8
3.8
7.4
15.6
11.6
7.3
VCC=1.8V±0.15 V
VCC=2.5V±0.2V
VCC=2.7V
1
tdis
1
1
6.6
VCC=3.3V±0.3V
1.5
6.3
OPERATING CHARACTERISTICS
PARAMETER
SYMBOL
TEST CONDITIONS
OE=0, f=10MHz, VCC=1.8V
OE=0, f=10MHz, VCC=2.5V
OE=0, f=10MHz, VCC=3.3V
OE=1, f=10MHz, VCC=1.8V
OE=1, f=10MHz, VCC=2.5V
OE=1, f=10MHz, VCC=3.3V
MIN
TYP
43
43
44
1
MAX UNIT
Power Dissipation Capacitance
Cpd
pF
1
2
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U74LVC244
CMOS IC
TEST CIRCUIT AND WAVEFORMS
VEXT
V△
VCC
VIN
tR/tF
VM
CL
RL
tPLH/tPHL
OPEN
OPEN
OPEN
OPEN
OPEN
tPZH/tPHZ
GND
tPZL/tPLZ
2*VCC
1.5V
VCC
VCC
≤2ns
≤2ns
VCC/2
VCC/2
VCC/2
1.5V
0.1V
0.15V
0.15V
0.3V
15pF
30pF
30pF
50pF
50pF
2KΩ
1KΩ
1.8V±0.15V
2.5V±0.2V
2.7V
GND
GND
GND
GND
2*VCC
2*VCC
6V
VCC
≤2ns
500Ω
500Ω
500Ω
2.7V
2.7V
≤2.5ns
≤2.5ns
3.3V±0.3V
1.5V
0.3V
6V
Fig-1 Load circuitry
Fig-2 Propagation delay waves
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U74LVC244
CMOS IC
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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