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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
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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.
Revised May 2005
74VHC541
Octal Buffer/Line Driver with 3-STATE Outputs
General Description
The VHC541 is an advanced high-speed CMOS device
fabricated with silicon gate CMOS technology. It achieves
the high-speed operation similar to equivalent Bipolar
Schottky TTL while maintaining the CMOS low power dissipation.
The VHC541 is an octal buffer/line driver designed to be
employed as memory and address drivers, clock drivers
and bus oriented transmitter/receivers.
This device is similar in function to the VHC244 while providing flow-through architecture (inputs on opposite side
from outputs). This pinout arrangement makes this device
especially useful as an output port for microprocessors,
allowing ease of layout and greater PC board density.
An input protection circuit insures that 0V to 7V can be
applied to the input pins without regard to the supply voltage. This device can be used to interface 5V to 3V systems
and two supply systems such as battery backup. This circuit prevents device destruction due to mismatched supply
and input voltages.
Features
■ High Speed: tPD
3.5 ns (typ) at VCC
5V
■ Low power dissipation: ICC
4 PA (max) at TA
■ High noise immunity: VNIH
VNIL
25qC
28% VCC (min)
■ Power down protection is provided on all inputs
■ Low noise: VOLP
0.9V (typ)
■ Pin and function compatible with 74HC541
Ordering Code:
Order Number
74VHC541M
74VHC541SJ
74VHC541MTC
74VHC541N
Package Number
Package Description
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
M20D
Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
MTC20
N20A
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.
Connection Diagram
Logic Symbol
IEEE/IEC
Truth Table
Pin Descriptions
Inputs
Pin Names
Descriptions
OE1, OE2
3-STATE Output Enable Inputs
I0 - I7
Inputs
O0 - O7
3-STATE Outputs
OE1
OE2
I
L
L
H
H
X
X
Z
X
H
X
Z
L
L
L
L
H HIGH Voltage Level
L LOW Voltage Level
© 2005 Fairchild Semiconductor Corporation
DS011639
Outputs
H
X Immaterial
Z High Impedance
www.fairchildsemi.com
74VHC541 Octal Buffer/Line Driver with 3-STATE Outputs
August 1993
74VHC541
Absolute Maximum Ratings(Note 1)
Recommended Operating
Conditions (Note 2)
0.5V to 7.0V
0.5V to 7.0V
0.5V to VCC 0.5V
20 mA
r20 mA
r25 mA
r75 mA
65qC to 150qC
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)
Storage Temperature (TSTG)
0V to 5.5V
Output Voltage (VOUT)
0V to VCC
40qC to 85qC
Operating Temperature (TOPR)
Input Rise and Fall Time (tr, tf)
Lead Temperature (TL)
VCC
3.3V r0.3V
0 a 100 ns/V
VCC
5.0V r0.5V
0 a 20 ns/V
Note 1: Absolute Maximum Ratings are values beyond which the device
may be damaged or have its useful life impaired. The databook specifications should be met, without exception, to ensure that the system design is
reliable over its power supply, temperature, and output/input loading variables. Fairchild does not recommend operation outside databook specifications.
260qC
(Soldering, 10 seconds)
2.0V to 5.5V
Supply Voltage (VCC)
Input Voltage (VIN)
Note 2: Unused inputs must be held HIGH or LOW. They may not float
DC Electrical Characteristics
Symbol
VIH
HIGH Level Input
Voltage
VIL
VOL
25qC
40qC to 85qC
TA
Typ
Max
Min
2.0
1.50
1.50
0.7 VCC
0.7 VCC
Max
2.0
0.50
0.50
0.3 VCC
0.3 VCC
HIGH Level Output
2.0
1.9
2.0
1.9
Voltage
3.0
2.9
3.0
2.9
4.5
4.4
4.5
3.0
2.58
2.48
4.5
3.94
3.80
LOW Level Output
2.0
ICC
Quiescent Supply Current
V
VIN
VIH
V
IOH
50 PA
IOH
4 mA
or VIL
4.4
0.0
0.1
V
0.1
3.0
0.0
0.1
0.1
4.5
0.0
0.1
0.1
VIN
VIH
V
IOH
8 mA
IOL
50 PA
IOL
4 mA
IOL
8 mA
or VIL
3.0
0.36
0.44
0.36
0.44
5.5
r0.25
r2.5
0 5.5
r0.1
r1.0
PA
VIN
5.5V or GND
5.5
4.0
40.0
PA
VIN
VCC or GND
Off-State Current
Input Leakage Current
Conditions
4.5
3-STATE Output
IIN
Units
V
3.0 5.5
Voltage
IOZ
TA
Min
3.0 5.5
LOW Level Input
Voltage
VOH
VCC
(V)
Parameter
V
PA
VIN
VIH or VIL
VOUT
VCC or GND
Noise Characteristics
Symbol
Parameter
VOLP
Quiet Output Maximum Dynamic
(Note 3)
VOL
VOLV
Quiet Output Minimum Dynamic
(Note 3)
VOL
VIHD
Minimum HIGH Level Dynamic
(Note 3)
Input Voltage
VILD
Maximum HIGH Level Dynamic
(Note 3)
Input Voltage
TA
Typ
Limits
5.0
0.9
1.2
V
CL
50 pF
5.0
0.8
1.0
V
CL
50 pF
5.0
3.5
V
CL
50 pF
5.0
1.5
V
CL
50 pF
Note 3: Parameter guaranteed by design.
www.fairchildsemi.com
25qC
VCC
(V)
2
Units
Conditions
Symbol
Parameter
tPLH
Propagation Delay
tPHL
Time
VCC
(V)
TA
Min
3.3 r 0.3
5.0 r 0.5
tPZL
3-STATE Output
tPZH
Enable Time
3.3 r 0.3
5.0 r 0.5
25qC
TA
40qC to 85qC
Typ
Max
Min
Max
5.0
7.0
1.0
8.5
7.5
10.5
1.0
12.0
3.5
5.0
1.0
6.0
5.0
7.0
1.0
8.0
6.8
10.5
1.0
12.5
9.3
14.0
1.0
16.0
4.7
7.2
1.0
8.5
6.2
9.2
1.0
10.5
tPLZ
3-STATE
3.3 r 0.3
11.2
15.4
1.0
17.5
tPHZ
Output
5.0 r 0.5
6.0
8.8
1.0
10.0
Units
Conditions
CL
15 pF
CL
50 pF
CL
15 pF
CL
50 pF
1 k: CL
15 pF
CL
50 pF
CL
15 pF
CL
50 pF
1 k: CL
50 pF
CL
50 pF
CL
50 pF
CL
50 pF
ns
ns
ns
RL
ns
RL
ns
Disable Time
tOSLH
Output to Output Skew
tOSHL
CIN
Input Capacitance
COUT
Output Capacitance
CPD
Power Dissipation Capacitance
Note 4: Parameter guaranteed by design. tOSLH
3.3 r 0.3
1.5
1.5
5.0 r 0.5
1.0
1.0
10
10
4
|tPLHmax t PLHmin|; tOSHL
ns
(Note 4)
pF
VCC
Open
6
pF
VCC
5.0V
18
pF
(Note 5)
|tPHLmax tPHLmin|.
Note 5: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load. Average
operating current can be obtained by the equation: ICC (OPR.) CPD * VCC * fIN ICC/8 (per bit).
3
www.fairchildsemi.com
74VHC541
AC Electrical Characteristics
74VHC541
Physical Dimensions inches (millimeters) unless otherwise noted
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
Package Number M20B
www.fairchildsemi.com
4
74VHC541
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
5
www.fairchildsemi.com
74VHC541
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
www.fairchildsemi.com
6
74VHC541 Octal Buffer/Line Driver with 3-STATE Outputs
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:
2. A critical component in any component of a life support
device or system whose failure to perform can be reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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 reasonably expected to result in a significant injury to the
user.
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7
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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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