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U74LVC244L-P20-T [UTC]

OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS;
U74LVC244L-P20-T
型号： U74LVC244L-P20-T
厂家： Unisonic Technologies    Unisonic Technologies
描述：

OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS

驱动 输出元件
文件： 总6页 (文件大小：219K)
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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  
U74LVC244L-D20-T  
U74LVC244L-S20-T  
U74LVC244L-S20-R  
U74LVC244L-P20-T  
U74LVC244L-P20-R  
U74LVC244G-D20-T  
U74LVC244G-S20-T  
U74LVC244G-S20-R  
U74LVC244G-P20-T  
U74LVC244G-P20-R  
DIP-20  
SOP-20  
Tube  
Tube  
SOP-20  
Tape Reel  
Tube  
TSSOP-20  
TSSOP-20  
Tape Reel  
MARKING INFORMATION  
PACKAGE  
MARKING  
DIP-20/SOP-20/TSSOP-20  
www.unisonic.com.tw  
1 of 6  
Copyright © 2014 Unisonic Technologies Co., Ltd  
QW-R502-245.D  
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)  
UNISONIC TECHNOLOGIES CO., LTD  
2 of 6  
QW-R502-245.D  
www.unisonic.com.tw  
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  
°C  
Output Clamp Current  
-50  
Output Current  
±50  
VCC or GND Current  
±100  
Operating Temperature  
Storage Temperature  
TOPR  
TSTG  
-40~ +125  
-65 ~ +150  
°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  
CONDITIONS  
Operating  
MIN  
TYP  
MAX  
3.6  
UNIT  
V
1.65  
Supply Voltage  
VCC  
Data retention only  
1.5  
V
Input Voltage  
VIN  
0
5.5  
V
Output Voltage  
VOUT  
0
0.65×VCC  
1.7  
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  
VCC=2.7V to 3.6V  
VCC=1.65V  
V
High-Level Input Voltage  
Low-Level Input Voltage  
VIH  
VIL  
V
2
V
0.35×VCC  
V
0.7  
0.8  
-4  
V
V
mA  
mA  
mA  
mA  
mA  
mA  
mA  
mA  
VCC=2.3V  
-8  
High-Level Output Current  
Low-Level Output Current  
IOH  
VCC=2.7V  
-12  
-24  
4
VCC=3V  
VCC=1.65V  
VCC=2.3V  
8
IOL  
VCC=2.7V  
12  
24  
VCC=3V  
THERMAL DATA  
PARAMETER  
SYMBOL  
RATINGS  
UNIT  
DIP-20  
69  
58  
83  
θJA  
°C /W  
Junction to Ambient  
SOP-20  
TSSOP-20  
UNISONIC TECHNOLOGIES CO., LTD  
3 of 6  
QW-R502-245.D  
www.unisonic.com.tw  
U74LVC244  
CMOS IC  
MAX UNIT  
V
ELECTRICAL CHARACTERISTICS  
PARAMETER  
SYMBOL  
TEST CONDITIONS  
VCC=1.65V to 3.6V, IOH=-100uA  
VCC=1.65V, IOH=-4mA  
VCC=2.3V, IOH=-8mA  
MIN  
VCC-0.2  
1.29  
1.9  
TYP  
High-Level Output Voltage  
Low-Level Output Voltage  
VOH  
VCC=2.7V, IOH=-12mA  
VCC=3V, IOH=-12mA  
2.2  
2.4  
VCC=3V, IOH=-24mA  
2.3  
VCC=1.65V to 3.6V, IOH=100uA  
VCC= 1.65V, IOH=4mA  
VCC=2.3V, IOH=8mA  
0.1  
0.24  
VOL  
0.3  
0.4  
0.55  
±1  
±1  
±1  
1
V
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 5.5V  
uA  
uA  
uA  
Power OFF Leakage Current  
Output OFF-State Current  
IOZ  
VCC=3.6V ,VIN=VCC or GND, IOUT=0  
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  
IQ  
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)  
1
7.4  
6.7  
ns  
ns  
ns  
1
VCC=3.3V±0.3V  
VCC=1.5V  
1.5  
1
5.7  
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
UNISONIC TECHNOLOGIES CO., LTD  
4 of 6  
QW-R502-245.D  
www.unisonic.com.tw  
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  
GND  
GND  
GND  
GND  
tPZL/tPLZ  
2*VCC  
2*VCC  
2*VCC  
6V  
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  
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  
UNISONIC TECHNOLOGIES CO., LTD  
5 of 6  
QW-R502-245.D  
www.unisonic.com.tw  
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.  
UNISONIC TECHNOLOGIES CO., LTD  
6 of 6  
QW-R502-245.D  
www.unisonic.com.tw  

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