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74VHC244MX [ONSEMI]

带 3 状态输出的八路缓冲器/线路驱动器;
74VHC244MX
型号： 74VHC244MX
厂家： ONSEMI    ONSEMI
描述：

带 3 状态输出的八路缓冲器/线路驱动器

驱动 光电二极管 逻辑集成电路 驱动器
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is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.  
November 1992  
Revised April 2005  
74VHC244  
Octal Buffer/Line Driver with 3-STATE Outputs  
General Description  
Features  
The VHC244 is an advanced high speed CMOS octal bus  
buffer fabricated with silicon gate CMOS technology. It  
achieves high speed operation similar to equivalent Bipolar  
Schottky TTL while maintaining the CMOS low power dissi-  
pation. The VHC244 is a non-inverting 3-STATE buffer hav-  
ing two active-LOW output enables. These devices are  
designed to be used as 3-STATE memory address drivers,  
clock drivers, and bus oriented transmitter/receivers.  
■ High Speed: tPD 3.9ns (typ) at VCC 5V  
■ High noise immunity: VNIH VNIL 28% VCC (min)  
■ Power down protection is provided on all inputs  
■ Low noise: VOLP 0.6V (typ)  
■ Low power dissipation: ICC  
4 A (max) @ TA 25 C  
■ Pin and function compatible with 74HC244  
An input protection circuit ensures that 0V to 7V can be  
applied to the input pins without regard to the supply volt-  
age. This device can be used to interface 5V to 3V systems  
and two supply systems such as battery back up. This cir-  
cuit prevents device destruction due to mismatched supply  
and input voltages.  
Ordering Code:  
Order Number Package Number  
Package Description  
74VHC244M  
74VHC244SJ  
74VHC244MTC  
74VHC244N  
M20B  
M20D  
MTC20  
N20A  
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide  
Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide  
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide  
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide  
Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.  
Pb-Free package per JEDEC J-STD-020B.  
Logic Symbol  
Connection Diagram  
IEEE/IEC  
© 2005 Fairchild Semiconductor Corporation  
DS011522  
www.fairchildsemi.com  
Pin Descriptions  
Truth Tables  
Pin Names  
Description  
OE1, OE2  
I0–I7  
3-STATE Output Enable Inputs  
Inputs  
O0–O7  
3-STATE Outputs  
Inputs  
Outputs  
OE1  
In  
(Pins 12, 14, 16, 18)  
L
L
L
H
X
L
H
Z
H
Inputs  
Outputs  
OE2  
In  
(Pins 3, 5, 7, 9)  
L
L
L
H
X
L
H
Z
H
H
L
I
HIGH Voltage Level  
LOW Voltage Level  
Immaterial  
Z
High Impedance  
www.fairchildsemi.com  
2
Absolute Maximum Ratings(Note 1)  
Recommended Operating  
Conditions (Note 2)  
Supply Voltage (VCC  
DC Input Voltage (VIN  
DC Output Voltage (VOUT  
Input Diode Current (IIK  
Output Diode Current (IOK  
DC Output Current (IOUT  
DC VCC/GND Current (ICC  
)
0.5V to 7.0V  
0.5V to 7.0V  
0.5V to VCC 0.5V  
20 mA  
)
Supply Voltage (VCC  
Input Voltage (VIN  
Output Voltage (VOUT  
Operating Temperature (TOPR  
)
2.0V to 5.5V  
0V to 5.5V  
0V to VCC  
)
)
)
)
)
20 mA  
)
40 C to 85 C  
)
25 mA  
Input Rise and Fall Time (tr, tf)  
VCC 3.3V 0.3V  
)
75 mA  
0 ns/V 100 ns/V  
0 ns/V 20 ns/V  
Storage Temperature (TSTG  
Lead Temperature (TL)  
(Soldering, 10 seconds)  
)
65 C to 150 C  
VCC 5.0V 0.5V  
Note 1: Absolute Maximum Ratings are values beyond which the device  
may be damaged or have its useful life impaired. The databook specifica-  
tions should be met, without exception, to ensure that the system design is  
reliable over its power supply, temperature, and output/input loading vari-  
ables. Fairchild does not recommend operation outside databook specifica-  
tions.  
260 C  
Note 2: Unused inputs must be held HIGH or LOW. They may not float.  
DC Electrical Characteristics  
V
T
25 C  
Typ  
T
A
40 C to 85 C  
Max  
CC  
A
Symbol  
Parameter  
Units  
Conditions  
(V)  
Min  
Max  
Min  
1.5  
V
V
V
HIGH Level  
2.0  
1.5  
IH  
V
V
Input Voltage  
LOW Level  
3.0 5.5 0.7 V  
2.0  
0.7 V  
CC  
CC  
0.5  
0.5  
IL  
Input Voltage  
HIGH Level  
Output Voltage  
3.0 5.5  
0.3 V  
0.3 V  
CC  
CC  
2.0  
3.0  
4.5  
3.0  
4.5  
2.0  
3.0  
4.5  
3.0  
4.5  
5.5  
1.9  
2.0  
3.0  
4.5  
1.9  
2.9  
V
V
V
I
50 A  
OH  
IN  
IH  
OH  
2.9  
4.4  
V
V
V
or V  
IL  
4.4  
2.58  
3.94  
2.48  
3.80  
I
I
I
4 mA  
8 mA  
OH  
OH  
OL  
V
LOW Level  
0.0  
0.0  
0.0  
0.1  
0.1  
0.1  
0.1  
V
IH  
50 A  
OL  
IN  
Output Voltage  
or V  
IL  
0.1  
0.1  
0.36  
0.36  
0.25  
0.44  
0.44  
2.5  
I
I
4 mA  
8 mA  
OL  
OL  
V
A
I
3-STATE Output  
V
V
V
V
V
or V  
OZ  
IN  
IH IL  
Off-State Current  
V
or GND  
OUT  
IN  
CC  
I
I
Input Leakage Current  
Quiescent Supply Current  
0
5.5  
5.5  
0.1  
4.0  
1.0  
A
A
5.5V or GND  
V or GND  
CC  
IN  
40.0  
CC  
IN  
Noise Characteristics  
V
T
25 C  
Limits  
CC  
A
Symbol  
Parameter  
Units  
Conditions  
(V)  
Typ  
V
Quiet Output Maximum  
5.0  
0.6  
0.9  
0.9  
3.5  
1.5  
V
V
V
V
C
C
C
C
50 pF  
50 pF  
50 pF  
50 pF  
OLP  
L
L
L
L
(Note 3) Dynamic V  
OL  
V
Quiet Output Minimum  
5.0  
5.0  
5.0  
0.6  
OLV  
(Note 3) Dynamic V  
OL  
V
Minimum HIGH Level  
(Note 3) Dynamic Input Voltage  
Maximum HIGH Level  
IHD  
V
ILD  
(Note 3) Dynamic Input Voltage  
Note 3: Parameter guaranteed by design.  
3
www.fairchildsemi.com  
AC Electrical Characteristics  
V
T
25 C  
Typ  
T
A
40 C to 85 C  
CC  
A
Symbol  
Parameter  
Units  
ns  
Conditions  
(V)  
Min  
Max  
8.4  
Min  
Max  
10.0  
13.5  
6.5  
t
t
Propagation Delay  
Time  
3.3 0.3  
5.8  
8.3  
3.9  
5.4  
6.6  
9.1  
4.7  
6.2  
10.3  
6.7  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
C
C
C
C
C
C
C
C
C
C
C
C
15 pF  
50 pF  
15 pF  
50 pF  
15 pF  
50 pF  
15 pF  
50 pF  
50 pF  
50 pF  
50 pF  
50 pF  
PLH  
L
L
L
L
L
L
L
L
L
L
L
L
11.9  
5.5  
PHL  
5.0 0.5  
3.3 0.3  
ns  
7.5  
8.5  
t
t
3-STATE Output  
Enable Time  
10.6  
14.1  
7.3  
12.5  
16.0  
8.5  
PZL  
PZH  
ns  
R
R
1 k  
1 k  
L
5.0 0.5  
ns  
9.3  
10.5  
16.0  
10.5  
1.5  
t
t
t
t
3-STATE Output  
Disable Time  
3.3 0.3  
5.0 0.5  
3.3 0.3  
5.0 0.5  
14.0  
9.2  
PLZ  
ns  
L
PHZ  
Output to Output  
Skew  
1.5  
OSLH  
OSHL  
ns  
(Note 4)  
1.0  
1.0  
C
C
C
Input Capacitance  
Output Capacitance  
Power Dissipation Capacitance  
4
6
10  
10  
pF  
pF  
pF  
V
V
Open  
5.0V  
IN  
CC  
OUT  
PD  
CC  
19  
(Note 5)  
Note 4: Parameter guaranteed by design. t  
|t  
t
|; t  
|t  
t
|.  
PHLmin  
OSLH  
PLHmax  
PLHmin OSHL  
PHLmax  
Note 5: C is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load. Average  
PD  
operating current can be obtained by the equation: I (OPR.)  
CC  
C
* V * f  
I
/8 (per bit).  
PD  
CC  
IN  
CC  
www.fairchildsemi.com  
4
Physical Dimensions inches (millimeters) unless otherwise noted  
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide  
Package Number M20B  
5
www.fairchildsemi.com  
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)  
Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide  
Package Number M20D  
www.fairchildsemi.com  
6
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)  
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide  
Package Number MTC20  
7
www.fairchildsemi.com  
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)  
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide  
Package Number N20A  
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and  
Fairchild reserves the right at any time without notice to change said circuitry and specifications.  
LIFE SUPPORT POLICY  
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT  
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD  
SEMICONDUCTOR CORPORATION. As used herein:  
1. Life support devices or systems are devices or systems  
which, (a) are intended for surgical implant into the  
body, or (b) support or sustain life, and (c) whose failure  
to perform when properly used in accordance with  
instructions for use provided in the labeling, can be rea-  
sonably expected to result in a significant injury to the  
user.  
2. A critical component in any component of a life support  
device or system whose failure to perform can be rea-  
sonably expected to cause the failure of the life support  
device or system, or to affect its safety or effectiveness.  
www.fairchildsemi.com  
www.fairchildsemi.com  
8
ON Semiconductor and  
are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.  
ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent  
coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein.  
ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability  
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.  
Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards,  
regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or  
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer  
application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not  
designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification  
in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized  
application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and  
expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such  
claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This  
literature is subject to all applicable copyright laws and is not for resale in any manner.  
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