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INTEGRATED CIRCUITS
74LVC541A
Octal buffer/line driver with 5-volt tolerant
inputs/outputs (3-State)
Product specification
Supercedes data of 1997 Oct 27
IC24 Data Handbook
1998 Jul 29
Page 2
Philips Semiconductors Product specification
Octal buffer/line driver with 5-volt tolerant
inputs/outputs (3-State)
FEA TURES
•5-volt tolerant inputs/outputs, for interfacing with 5-volt logic
•Wide supply voltage range of 2.7V to 3.6V
•Complies with JEDEC standard no. 8-1A
•CMOS low power consumption
•Direct interface with TTL levels
•5 Volt tolerant inputs/outputs, for interfacing with 5 Volt logic
QUICK REFERENCE DATA
GND = 0 V; T
SYMBOL
t
NOTES:
is used to determine the dynamic power dissipation (PD in µW)
1. C
PD
P
= CPD × V
D
fi = input frequency in MHz; CL = output load capacitance in pF;
= output frequency in MHz; VCC = supply voltage in V;
f
o
(C
L
2. The condition is VI = GND to V
= 25°C; tr = tf ≤ 2.5 ns
amb
PHL/tPLH
C
I
C
PD
2
× fi (CL × V
CC
2
× V
× fo) = sum of the outputs.
CC
PARAMETER CONDITIONS TYPICAL UNIT
Propagation delay
An to Yn
Input capacitance 5.0 pF
Power dissipation capacitance per buffer Notes 1 and 2 20 pF
2
× fo) where:
CC
CC
CL = 50 pF;
VCC = 3.3 V
74L VC541A
DESCRIPTION
The 74LVC541A is a high performance, low-power, low-voltage
Si-gate CMOS device and superior to most advanced CMOS
compatible TTL families.
Inputs can be driven from either 3.3V or 5.0V devices. In 3-State
operation, outputs can handle 5V. This feature allows the use of
these devices as translators in a mixed 3.3V/5V environment.
The 74LVC541A is an octal non-inverting buffer/line driver with
5-volt tolerant inputs/outputs. The 3-State outputs are controlled by
the output enable inputs OE
1 and OE2.
3.3 ns
ORDERING INFORMATION
PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA PKG. DWG. #
20-Pin Plastic SO –40°C to +85°C 74LVC541A D 74LVC541A D SOT163-1
20-Pin Plastic SSOP Type II –40°C to +85°C 74LVC541A DB 74LVC541A DB SOT339-1
20-Pin Plastic TSSOP Type I –40°C to +85°C 74LVC541A PW 7LVC541APW DH SOT360-1
PIN DESCRIPTION
PIN NUMBER SYMBOL NAME AND FUNCTION
1, 19 OE1, OE2
2, 3, 4, 5,
6, 7, 8, 9
10 GND Ground (0 V)
18, 17, 16, 15,
14, 13, 12, 11
20 V
A0 to A7 Data inputs
Y0 to Y7 Bus outputs
CC
Output enable inputs
(active LOW)
Positive supply voltage
FUNCTION TABLE
INPUTS INPUTS OUTPUT
OE1 OE2 An Yn
L L L L
L L H H
X H X Z
H X X Z
H = HIGH voltage level
L = LOW voltage level
X = don’t care
Z = high impedance OFF-state
1998 Jul 29 853-2103 19803
2
Page 3
Philips Semiconductors Product specification
Octal buffer/line driver with 5-volt tolerant
inputs/outputs (3-State)
PIN CONFIGURATION
1
OE
GND
1
A
2
0
3
A
1
4
A
2
5
A
3
6
A
4
A
7
5
8
A
6
9
A
7
10
20
V
CC
19
OE
2
18
Y
0
Y
17
1
16
Y
2
15
Y
3
14
Y
4
13
Y
5
Y
12
6
Y
11
7
LOGIC SYMBOL (IEEE/IEC)
1
19
2
3
4
5
6
7
8
9
&
74LVC541A
EN
18
17
16
15
14
13
12
11
LOGIC SYMBOL
SV00680
SV00682
FUNCTIONAL DIAGRAM
A
0
A
0
2
A
1
3
A
2
4
A
3
5
A
4
6
A
5
7
A
6
8
A
7
9
OE
1
1
OE
2
19
Y
0
18
Y
1
17
Y
2
16
Y
3
15
Y
4
14
Y
5
13
Y
6
12
Y
7
11
2
A
1
3
A
2
4
A
3
5
A
4
6
A
5
7
A
6
8
A
7
9
OE
1
1
OE
2
19
Y
0
Y
1
Y
2
Y
3
Y
4
Y
5
Y
6
Y
7
SV00683
18
17
16
15
14
13
12
11
1998 Jul 29
SV00681
3
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Philips Semiconductors Product specification
SYMBOL
PARAMETER
CONDITIONS
UNIT
V
V
V
V
O
P
TOT
Octal buffer/line driver with 5-volt tolerant
inputs/outputs (3-State)
RECOMMENDED OPERATING CONDITIONS
MIN MAX
DC supply voltage (for max. speed performance) 2.7 3.6
CC
DC supply voltage (for low-voltage applications) 1.2 3.6
V
T
amb
tr, t
ABSOLUTE MAXIMUM RATINGS
In accordance with the Absolute Maximum Rating System (IEC 134)
Voltages are referenced to GND (ground = 0V)
SYMBOL PARAMETER CONDITIONS RATING UNIT
I
GND
NOTES:
1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability .
2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
DC input voltage range 0 5.5 V
I
DC output voltage range; output HIGH or LOW state 0 V
O
DC output voltage range; output 3-State 0 5.5
Operating free-air temperature range –40 +85 °C
Input rise and fall times
f
VCC = 1.2 to 2.7V
VCC = 2.7 to 3.6V
0
0
1
V
CC
I
IK
V
I
I
OK
V
O
DC supply voltage –0.5 to +6.5 V
DC input diode current VI t0 –50 mA
DC input voltage Note 2 –0.5 to +5.5 V
DC output diode current V
DC output voltage; output HIGH or
LOW
uVCC or VO t 0 ±50 mA
O
Note 2 –0.5 to VCC +0.5
DC output voltage; output 3-State Note 2 –0.5 to +6.5
I
O
, I
T
stg
DC output diode current VO = 0 to V
DC VCC or GND current ±100 mA
CC
CC
Storage temperature range –60 to +150 °C
Power dissipation per package
– plastic mini-pack (SO) above +70°C derate linearly with 8 mW/K 500
– plastic shrink mini-pack (SSOP and
TSSOP)
above +60°C derate linearly with 5.5 mW/K 500
74LVC541A
LIMITS
CC
20
10
±50 mA
ns/V
V
mW
1998 Jul 29
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Philips Semiconductors Product specification
VIHHIGH level Input voltage
V
VILLOW level Input voltage
V
VOHHIGH level output voltage
V
Octal buffer/line driver with 5-volt tolerant
inputs/outputs (3-State)
DC ELECTRICAL CHARACTERISTICS
Over recommended operating conditions voltages are referenced to GND (ground = 0V)
SYMBOL PARAMETER TEST CONDITIONS Temp = -40°C to +85°C UNIT
MIN TYP1MAX
p
p
VCC = 1.2V V
VCC = 2.7 to 3.6V 2.0
VCC = 1.2V GND
VCC = 2.7 to 3.6V 0.8
VCC = 2.7V; VI = VIH or VIL;IO = –12mA VCC*0.5
p
VCC = 3.0V; VI = VIH or VIL;IO = –100µA VCC*0.2 V
VCC = 3.0V; VI = VIH or V
VCC = 3.0V; VI = VIH or V
= –18mA VCC*0.6
IL;IO
= –24mA VCC*0.8
IL;IO
VCC = 2.7V; VI = VIH or VIL;IO = 12mA 0.40
V
I
∆I
OL
I
I
OZ
OFF
I
CC
CC
LOW level output voltage
Input leakage current VCC = 3.6V; VI = 5.5V or GND
I
3-State output OFF-state current VCC = 3.6V; VI = VIH or VIL;VO = 5.5V or GND 0.1
Power off leakage supply VCC = 0.0V; V
Quiescent supply current VCC = 3.6V; VI = VCC or GND; IO = 0 0.1 10 µA
Additional quiescent supply current
per input pin
VCC = 3.0V; VI = VIH or VIL;IO = 100µA 0.20
VCC = 3.0V; VI = VIH or V
or VO = 5.5V
I
= 24mA 0.55
IL;IO
VCC = 2.7V to 3.6V; VI = VCC –0.6V; IO = 0 5 500 µA
NOTES:
1. All typical values are at V
2. The specified overdrive current at the data input forces the data input to the opposite logic input state.
= 3.3V and T
CC
amb
= 25°C.
CC
74LVC541A
LIMITS
CC
"0.1 "5
"5
"10
V
µA
µA
µA
AC CHARACTERISTICS
GND = 0 V; tr = tf ≤ 2.5 ns; CL = 50 pF
LIMITS
SYMBOL PARAMETER WAVEFORM VCC = 3.3V ±0.3V VCC = 2.7V
1
MAX MIN TYP MAX TYP
t
PHL/tPLH
t
PZH/tPZL
t
PHZ/tPLZ
Propagation delay
An to Yn
3-State output enable time
OEn to Yn
3-State output disable time
OEn to Yn
Figures 1, 3 1.5 3.3 5.6 1.5 3.9 6.6 14 ns
Figures 2, 3 1.5 4.4 7.4 1.5 5.2 8.4 2.2 ns
Figures 2, 3 1.5 3.8 6.0 1.5 4.3 7.0 11 ns
NOTE:
1. Unless otherwise stated, all typical values are at V
= 3.3V and T
CC
MIN TYP
= 25°C.
amb
VCC =
1.2V
UNIT
1998 Jul 29
5
Page 6
Philips Semiconductors Product specification
Octal buffer/line driver with 5-volt tolerant
inputs/outputs (3-State)
AC WAVEFORMS
VM = 1.5 V at VCC w 2.7 V
= 0.5 VCC at VCC < 2.7 V
V
M
V
= VOL + 0.3 V at VCC ≥ 2.7 V
X
= VOL + 0.1 ⋅ VCC at VCC < 2.7 V
V
X
V
= VOH – 0.3 V at VCC ≥ 2.7 V
Y
= VOH – 0.1 ⋅ VCC at VCC < 2.7 V
V
Y
V
and VOH are the typical output voltage drop that occur with the
OL
output load.
V
I
An INPUT
GND
V
Yn OUTPUT
V
t
OH
OL
PHL
V
M
t
PLH
V
M
V
I
OEn INPUT
GND
V
CC
OUTPUT
LOW-to-OFF
OFF-to-LOW
V
OL
V
OUTPUT
HIGH-to-OFF
OFF–to-HIGH
OH
GND
Figure 2. 3-state enable and disable times.
TEST CIRCUIT
PULSE
GENERATOR
V
I
V
M
t
outputs
enabled
PLZ
t
PHZ
R
T
V
CC
D.U.T.
74LVC541A
t
PZL
V
t
PZH
M
V
S
500Ω
500Ω
M
SV00685
1
outputs
enabled
2 x V
Open
GND
CC
V
X
V
Y
outputs
disabled
V
O
50pF
C
L
SV00700
Figure 1. Input (An) to output (Yn) propagation delays.
V
CC
t 2.7V V
2.7V – 3.6V 2.7V
V
Test S
I
CC
t
PLH/tPHL
t
PLZ/tPZL
t
PHZ/tPZH
Open
2 x V
GND
1
CC
Figure 3. Load circuitry for switching times.
SY00003
1998 Jul 29
6
Page 7
Philips Semiconductors Product specification
Octal buffer/line driver with 5-volt tolerant
inputs/outputs (3-State)
SO20: plastic small outline package; 20 leads; body width 7.5 mm SOT163-1
74LVC541A
1998 Jul 29
7
Page 8
Philips Semiconductors Product specification
Octal buffer/line driver with 5-volt tolerant
inputs/outputs (3-State)
SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm SOT339-1
74LVC541A
1998 Jul 29
8
Page 9
Philips Semiconductors Product specification
Octal buffer/line driver with 5-volt tolerant
inputs/outputs (3-State)
TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm SOT360-1
74LVC541A
1998 Jul 29
9
Page 10
Philips Semiconductors Product specification
Octal buffer/line driver with 5-volt tolerant
inputs/outputs (3-State)
Data sheet status
Data sheet
status
Objective
specification
Preliminary
specification
Product
specification
Product
status
Development
Qualification
Production
Definition
This data sheet contains the design target or goal specifications for product development.
Specification may change in any manner without notice.
This data sheet contains preliminary data, and supplementary data will be published at a later date.
Philips Semiconductors reserves the right to make chages at any time without notice in order to
improve design and supply the best possible product.
This data sheet contains final specifications. Philips Semiconductors reserves the right to make
changes at any time without notice in order to improve design and supply the best possible product.
[1]
74LVC541A
[1] Please consult the most recently issued datasheet before initiating or completing a design.
Definitions
Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For
detailed information see the relevant data sheet or data handbook.
Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one
or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or
at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended
periods may affect device reliability.
Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips
Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or
modification.
Disclaimers
Life support — These products are not designed for use in life support appliances, devices or systems where malfunction of these products can
reasonably be expected to result in personal injury . Philips Semiconductors customers using or selling these products for use in such applications
do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.
Right to make changes — Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard
cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no
responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless
otherwise specified.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 94088–3409
Telephone 800-234-7381
Copyright Philips Electronics North America Corporation 1998
All rights reserved. Printed in U.S.A.
print code Date of release: 08-98
Document order number: 9397-750-04509
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