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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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© 2005 Fairchild Semiconductor Corporation DS01 1639 www.fairchildsemi.com
August 1993
Revised May 2005
74VHC541 Octal Buffer/Line Driver with 3-STATE Outputs
74VHC541
Octal Buffer/Line Driver with 3-STATE Outputs
General Descript ion
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 maintain ing the CMOS low power dissi-
pation.
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 fu nction to the VHC244 while pro-
viding 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 inp ut pins wi thout rega rd to the supply volt-
age. This device can be used to interface 5V to 3V systems
and two supply systems such as battery backup. This cir-
cuit pr eve nts d evice de stru ction d ue to mismat ched suppl y
and input voltages.
Features
■High Speed: tPD
3.5 ns (typ) at VCC
5V
■Low power dissipation: ICC
4
P
A (max) at TA
25
q
C
■High noise immunity: VNIH
VNIL
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:
Surface m ount packa ges are also available on Tape and Reel . Specify by appending th e s uffix letter “X” to the ordering c ode.
Pb-Free package per JEDEC J-STD-020B.
Connection Diagram
Pin Descriptions
Logic Symbol
IEEE/IEC
Truth Table
H
HIGH Voltage Leve l X
Immaterial
L
LOW Voltage Lev el Z
High Impedance
Order Number Package Number Package Description
74VHC541M M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74VHC541SJ M20D Pb-Free 20-Lead Small Outlin e Package (SOP), EIAJ TYPE II, 5.3mm Wide
74VHC541MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74VHC541N N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Pin Names Descriptions
OE1, OE23-STATE Output Enable Inputs
I0 - I7Inputs
O0 - O73-STATE Outputs
Inputs Outputs
OE1OE2I
LLHH
HXXZ
XHXZ
LLLL
www.fairchildsemi.com 2
74VHC541
Absolute Maximum Ratings(No t e 1) Recommended Operating
Conditions (Note 2)
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.
Note 2: Unu s ed inputs must be held HIGH or LOW. They m ay not float
DC Electrical Characteristics
Noise Characteristics
Note 3: Parameter guaranteed by design.
Supply Voltage (VCC)
0.5V to
7.0V
DC Input Voltage (VIN)
0.5V to
7.0V
DC Output Voltage (VOUT)
0.5V to VCC
0.5V
Input Diode Current (IIK)
20 mA
Output Diode Current (IOK)
r
20 mA
DC Output Curren t (IOUT)
r
25 mA
DC VCC/GND Current (ICC)
r
75 mA
Storage Tem per atu re (TSTG)
65
q
C to
150
q
C
Lead Temperature (TL)
(Soldering, 10 seconds) 260
q
C
Supply Voltage (VCC) 2.0V to
5.5V
Input Voltage (VIN)0V to
5.5V
Output Voltage (VOUT) 0V to VCC
Operating Temperature ( T OPR)
40
q
C to
85
q
C
Input Rise and Fall Time (tr, tf)
VCC
3.3V
r
0.3V 0
a
100 ns/V
VCC
5.0V
r
0.5V 0
a
20 ns/V
Symbol Parameter VCC
(V)
TA
25
q
CT
A
40
q
C to
85
q
CUnits Conditions
Min Typ Max Min Max
VIH HIGH Level Input 2.0 1.50 1.50 V
Voltage 3.0
5.5 0.7 VCC 0.7 VCC
VIL LOW Level Input 2.0 0.50 0.50 V
Voltage 3.0
5.5 0.3 VCC 0.3 VCC
VOH HIGH Level Output 2.0 1.9 2.0 1.9 VIN
VIH IOH
50
P
A
Voltage 3.0 2.9 3.0 2.9 V or VIL
4.5 4.4 4.5 4.4
3.0 2.58 2.48 VIOH
4 mA
4.5 3.94 3.80 IOH
8 mA
VOL LOW Level Output 2.0 0.0 0.1 0.1 VIN
VIH IOL
50
P
A
Voltage 3.0 0.0 0.1 0.1 V or VIL
4.5 0.0 0.1 0.1
3.0 0.36 0.44 VIOL
4 mA
4.5 0.36 0.44 IOL
8 mA
IOZ 3-STATE Output 5.5
r
0.25
r
2.5
P
AVIN
VIH or VIL
Off-State Current VOUT
VCC or GND
IIN Input Leakage Current 0
5.5
r
0.1
r
1.0
P
AV
IN
5.5V or GND
ICC Quiescent Supply Current 5.5 4.0 40.0
P
AV
IN
VCC or GND
Symbol Parameter VCC
(V)
TA
25
q
CUnits Conditions
Typ Limits
VOLP Quiet Output Maximum Dynamic 5.0 0.9 1.2 V CL
50 pF
(Note 3) VOL
VOLV Quiet Output Minimum Dynamic 5.0
0.8
1.0 V CL
50 pF
(Note 3) VOL
VIHD Minimum HIGH Level Dynamic 5.0 3.5 V CL
50 pF
(Note 3) Input Voltage
VILD Maximum HIGH Level Dynamic 5.0 1.5 V CL
50 pF
(Note 3) Input Voltage
3 www.fairchildsemi.com
74VHC541
AC Electrical Characteristics
Note 4: Parameter guaranteed by design. tOSLH
|tPLHmax
tPLHmin|; tOSHL
|tPHLmax
tPHLmin|.
Note 5: CPD is defined as the v alue of the int ernal equiv alent capacita nc e w hich is ca lc ulated from th e operatin g c urrent consumption w it ho ut load. Average
operati ng c urrent can be obtained b y the equation: ICC (OPR.)
CPD * VCC * fIN
ICC/8 (per bit).
Symbol Parameter VCC
(V)
TA
25
q
CT
A
40
q
C to
85
q
CUnits Conditions
Min Typ Max Min Max
tPLH Propagation Delay 3.3
r
0.3 5.0 7.0 1.0 8.5 ns CL
15 pF
tPHL Time 7.5 10.5 1.0 12.0 CL
50 pF
5.0
r
0.5 3.5 5.0 1.0 6.0 ns CL
15 pF
5.07.01.08.0 C
L
50 pF
tPZL 3-STATE Output 3.3
r
0.3 6.8 10.5 1.0 12.5 ns RL
1 k
:
CL
15 pF
tPZH Enable Time 9.3 14.0 1.0 16.0 CL
50 pF
5.0
r
0.5 4.7 7.2 1.0 8.5 ns CL
15 pF
6.2 9.2 1.0 10.5 CL
50 pF
tPLZ 3-STATE 3.3
r
0.3 11.2 15.4 1.0 17.5 ns RL
1 k
:
CL
50 pF
tPHZ Output 5.0
r
0.5 6.0 8.8 1.0 10.0 CL
50 pF
Disable Time
tOSLH Output to Output Skew 3.3
r
0.3 1.5 1.5 ns (Note 4) CL
50 pF
tOSHL 5.0
r
0.5 1.0 1.0 CL
50 pF
CIN Input Capa citance 4 10 10 pF VCC
Open
COUT Output Capacitance 6 pF VCC
5.0V
CPD Power Dissipation Capacitance 18 pF (Note 5)
www.fairchildsemi.com 4
74VHC541
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
74VHC541
Physical Dim ensions 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
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
7 www.fairchildsemi.com
74VHC541 Octal Buffer/Line Driver with 3-STATE Outputs
Physical Dim ensions 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 assum e any responsibility for use of any circuitry described, no circuit patent lice nses 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 suppor t de vices o r syst ems are dev ic es or syste ms
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
instruct ions fo r use provided in the labe li ng, can be re a-
sonably expected to result in a significant injury to the
user.
2. A crit ical com ponen t in any com ponen t of a life s uppor t
device or system whose failure to perform can be rea-
sonabl y e xpec ted to cause the fa i lure of the life supp or t
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
www.onsemi.com
1
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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