U74HC244L-S20-T [UTC]
OCTAL BUFFER AND LINE DRIVER WITH 3-STATE OUTPUT;
| 型号： | U74HC244L-S20-T |
| 厂家： | 
Unisonic Technologies |
| 描述： | OCTAL BUFFER AND LINE DRIVER WITH 3-STATE OUTPUT 驱动 光电二极管 输出元件 逻辑集成电路 |
| 文件： | 总5页 (文件大小：193K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
U74HC244
CMOS IC
OCTAL BUFFER AND LINE
DRIVER WITH 3-STATE OUTPUT
DESCRIPTION
The U74HC244 are octal buffer and line drivers with non-inverting
3-state outputs. When n
high impedance.
is High, the outputs nQ will be in the
OE
FEATURES
* Operation voltage range: 2~6V
* 3-state output
* Output Drive Capability: 15 LSTTL Loads
ORDERING INFORMATION
Ordering Number
Package
Packing
Lead Free
Halogen Free
U74HC244L-D20-T
U74HC244L-S20-R
U74HC244L-S20-T
U74HC244L-P20-R
U74HC244L-P20-T
U74HC244G-D20-T
U74HC244G-S20-R
U74HC244G-S20-T
U74HC244G-P20-R
U74HC244G-P20-T
DIP-20
SOP-20
Tube
Tape Reel
Tube
SOP-20
TSSOP-20
TSSOP-20
Tape Reel
Tube
www.unisonic.com.tw
Copyright © 2012 Unisonic Technologies Co., Ltd
1 of 5
QW-R502-196.C
U74HC244
CMOS IC
PIN CONFIGURATION
VCC
1
2
20
19
18
17
16
15
14
13
12
11
1
OE
1A1
2Y4
2
OE
1Y1
2A4
1Y2
3
4
1A2
2Y3
5
2A3
1Y3
2A2
1Y4
2A1
6
1A3
2Y2
7
8
1A4
2Y1
9
10
GND
FUNCTION TABLE (each gate)
INPUT(nOE)
INPUT(nAn)
OUTPUT(nYn)
╳
H
L
Z
H
L
H
L
L
LOGIC DIAGRAM (positive logic)
1OE
2OE
1
1OE
EN
EN
1Y1
2
4
6
8
2Y1
18
1A1
2A1
1Y1
1A1
1A2
1A3
1A4
16
1Y2
14
12
1Y3
1Y4
1Y2
1Y3
2Y2
2Y3
1A2
1A3
2A2
2A3
19
2OE
11
13
15
17
8
2Y1
2A1
2A2
2A3
2A4
7
1Y2
5
3
1Y3
1Y4
1Y4
2Y4
1A4
2A4
IEC logic symbol
UNISONIC TECHNOLOGIES CO., LTD
2 of 5
QW-R502-196.C
www.unisonic.com.tw
U74HC244
CMOS IC
ABSOLUTE MAXIMUM RATINGS (unless otherwise specified)
PARAMETER
SYMBOL
VCC
RATINGS
-0.5~7
±20
UNIT
V
Supply Voltage
Input Clamp Current
Output Clamp Current
Output Current
IIK
mA
mA
mA
mA
°C
IOK
±20
IOUT
ICC
±35
VCC or GND Current
Storage Temperature
±70
TSTG
-65 ~ +150
Note: 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
Supply Voltage
SYMBOL
VCC
CONDITIONS
MIN
2
TYP
MAX UNIT
6
V
V
Input Voltage
VIN
0
VCC
VCC
1000
500
400
85
Output Voltage
VOUT
0
V
V
CC=2V
ns
ns
ns
°C
Input Rise or Fall Times
Operating Temperature
tR, tF
TA
VCC=4.5V
VCC=6V
-40
STATIC CHARACTERISTICS (TA=25°C, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
1.5
TYP
MAX UNIT
V
CC=2V
V
V
V
High-Level Input Voltage
Low-Level Input Voltage
VIH
VCC=4.5V
VCC=6V
3.15
4.2
VCC=2V
0.5
1.35
1.8
V
V
VIL
VCC=4.5V
VCC=6V
V
VCC=2V, IOH=-20μA
VCC=4.5V, IOH=-20μA
VCC=6V, IOH=-20μA
VCC=4.5V, IOH=-6mA
VCC=6V, IOH=-7.8mA
VCC=2V, IOL=20μA
VCC=4.5V, IOL=20μA
VCC=6V, IOL=20μA
VCC=4.5V, IOL =6mA
VCC=6V, IOL =7.8mA
VCC=6V, VIN=VCC or 0
VCC=6V,VOUT=VCC or 0,VIN=VIH or VIL
VCC=6V, VIN=VCC or 0, IOUT=0
VCC=2V~6V
1.9
4.4
1.998
4.499
5.999
4.3
V
V
High-Level Output Voltage
Low-Level Output Voltage
VOH
5.9
V
3.98
5.48
V
5.8
V
0.002
0.001
0.001
0.17
0.1
0.1
V
V
VOL
0.1
V
0.26
0.26
±100
±0.5
8
V
0.15
V
Input Leakage Current
Output OFF-State Current
Quiescent Supply Current
Input Capacitance
II(LEAK)
IOZ
nA
μA
μA
pF
IQ
CIN
3
10
UNISONIC TECHNOLOGIES CO., LTD
3 of 5
www.unisonic.com.tw
QW-R502-196.C
U74HC244
CMOS IC
DYNAMIC CHARACTERISTICS (TA=25°C, Input: tR, tF=6ns)
PARAMETER SYMBOL TEST CONDITIONS
CC=2V, CL=50pF
MIN
TYP
40
56
13
18
11
15
75
100
15
20
13
17
75
15
13
MAX
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
115
165
23
VCC=2V, CL=150pF
VCC=4.5V, CL=50pF
VCC=4.5V, CL=150pF
VCC=6V, CL=50pF
VCC=6V, CL=150pF
Propagation delay from input
(A) to output(Y)
t
PLH /tPHL
33
20
28
VCC=2V, CL=50pF
150
200
30
VCC=2V, CL=150pF
VCC=4.5V, CL=50pF
VCC=4.5V, CL=150pF
VCC=6V, CL=50pF
VCC=6V, CL=150pF
3-state output enable time
tPZH /tPZL
40
nOE to nYn
26
34
V
CC=2V, CL=50pF
PHZ /tPLZ VCC=4.5V, CL=50pF
VCC=6V, CL=50pF
150
30
3-state output disable time
t
nOE to nYn
26
OPERATING CHARACTERISTICS
PARAMETER
Power Dissipation Capacitance
SYMBOL
Cpd
TEST CONDITIONS
No load
MIN
TYP
35
MAX
UNIT
pF
UNISONIC TECHNOLOGIES CO., LTD
4 of 5
www.unisonic.com.tw
QW-R502-196.C
U74HC244
CMOS IC
TEST CIRCUIT AND WAVEFORMS
Note: CL includes probe and jig capacitance.
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
5 of 5
QW-R502-196.C
www.unisonic.com.tw
相关型号：
U74HC245G-R20-R
Bus Transceiver, HC/UH Series, 1-Func, 8-Bit, True Output, CMOS, PDSO20, HALOGEN FREE, SSOP-20
UTC
U74HC245G-S20-R
Bus Transceiver, HC/UH Series, 1-Func, 8-Bit, True Output, CMOS, PDSO20, HALOGEN FREE, SOP-20
UTC
U74HC245G-S20-T
Bus Transceiver, HC/UH Series, 1-Func, 8-Bit, True Output, CMOS, PDSO20, HALOGEN FREE, SOP-20
UTC
U74HC245L-D20-T
Bus Transceiver, HC/UH Series, 1-Func, 8-Bit, True Output, CMOS, PDIP20, LEAD FREE, DIP-20
UTC
U74HC245L-P20-R
Bus Transceiver, HC/UH Series, 1-Func, 8-Bit, True Output, CMOS, PDSO20, LEAD FREE, TSSOP-20
UTC
©2020 ICPDF网 联系我们和版权申明