Datasheet

UNISONIC TECHNOLOGIES CO., LTD
U74HC541
CMOS IC
OCTAL BUFFERS AND LINE
DRIVERS WITH 3-STATE
OUTPUTS
„
DESCRIPTION
The U74HC541 is a octal buffers and line drivers with 3-state
outputs and 8 channels.
„
TSSOP-20
FEATURES
* Operate from 2V to 6V
* Max tPD of 23ns at 4.5 V(CL=50pF)
* Typical VIH< 3.15V at VCC=4.5V, Ta=25°C
* Typical VIL> 1.35V at VCC=4.5V, Ta=25°C
„
ORDERING INFORMATION
Ordering Number
U74HC541G-P20-R
U74HC541G-P20-T
Package
TSSOP-20
TSSOP-20
www.unisonic.com.tw
Copyright © 2010 Unisonic Technologies Co., Ltd
Packing
Tape Reel
Tube
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U74HC541
„
„
CMOS IC
PIN CONFIGURATION
OE1
1
20
VCC
A1
2
19
OE2
A2
3
18
Y1
A3
4
17
Y2
A4
5
16
Y3
A5
6
15
Y4
A6
7
14
Y5
A7
8
13
Y6
A8
9
12
Y7
GND
10
11
Y8
FUNCTION TABLE
INPUTS( OE1
L
L
H
X
)
INPUTS( OE2
L
L
X
H
Note: H: HIGH voltage level
)
L: LOW voltage level
INPUTS(A)
L
H
X
X
Z: High impedance
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OUTPUT(Y)
L
H
Z
Z
X: Don’t care
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„
„
CMOS IC
LOGIC SYMBOL
LOGIC DIAGRAM
1
OE1
19
OE2
18 Y1
A1 2
A2
3
17
Y2
To six other channels
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U74HC541
„
CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC
-0.5 ~ 7
V
VCC or GND Current
ICC
±70
mA
Output Current
IOUT
±35
mA
Input Clamp Current
IIK
±20
mA
Output Clamp Current
IOK
±20
mA
Operating Temperature
TOPR
-40 ~ + 85
°C
Storage Temperature
TSTG
-65 ~ + 150
°C
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
High-Level Input Voltage
VIH
Low-Level Input Voltage
VIL
Input Voltage
Output Voltage
VIN
VOUT
Input Transition Rise or Fall Rate
tR,tF
„
TEST CONDITIONS
VCC=2V
VCC=4.5V
VCC=6V
VCC=2V
VCC=4.5V
VCC=6V
MIN
2
1.5
3.15
4.2
TYP
MAX
6
UNIT
V
V
0.5
1.35
1.8
VCC
VCC
1000
500
400
0
0
VCC=2V
VCC=4.5V
VCC=6V
V
V
V
ns
ELECTRICAL CHARACTERISTICS (TA=25°С)
PARAMETER
Output Voltage High-Level
SYMBOL
VOH
Output Voltage Low-Level
VOL
Input Leakage Current
Output Off-state Current
Quiescent Supply Current
Input Capacitance
II(LEAK)
IOZ
IQ
CIN
TEST CONDITIONS
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 GND
VCC=6V, VOUT= VCC or GND
VCC=6V, VIN=VCC or GND, IOUT=0
VCC=2V to 6V
UNISONIC TECHNOLOGIES CO., LTD
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MIN
1.9
4.4
5.9
3.98
5.48
TYP
1.998
4.499
5.999
4.3
5.8
0.002
0.001
0.001
0.17
0.15
±0.1
±0.01
3
MAX
UNIT
V
0.1
0.1
V
0.1
0.26
0.26
±100 nA
±0.5 μA
8
μA
10
pF
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CMOS IC
SWITCHING CHARACTERISTICS (TA=25°С,CL=50pF)
PARAMETER
SYMBOL
Propagation Delay From Input (A)
to Output (Y)
tPLH/tPHL
Output Enable Time From
OE to Y
tPZL/tPZH
Output Disable Time From OE to Y
tPLZ/tPHZ
Output Y
„
tt
MIN
TYP
40
12
10
80
17
15
40
18
17
28
8
6
MAX
115
23
20
150
30
26
150
30
26
60
12
10
UNIT
TYP
65
16
14
100
20
17
45
17
13
MAX
165
33
28
200
40
34
210
42
36
UNIT
TYP
35
MAX
UNIT
pF
ns
ns
ns
ns
SWITCHING CHARACTERISTICS (TA=25°С,CL=150pF)
PARAMETER
SYMBOL
Propagation Delay From Input (A)
to Output (Y)
tPLH/tPHL
Output Enable Time From
OE to Y
tPZL/tPZH
Output Y
„
TEST CONDITIONS
VCC=2V
VCC=4.5V
VCC=6V
VCC=2V
VCC=4.5V
VCC=6V
VCC=2V
VCC=4.5V
VCC=6V
VCC=2V
VCC=4.5V
VCC=6V
tt
TEST CONDITIONS
VCC=2V
VCC=4.5V
VCC=6V
VCC=2V
VCC=4.5V
VCC=6V
VCC=2V
VCC=4.5V
VCC=6V
MIN
ns
ns
ns
OPERATING CHARACTERISTICS(TA=25°С)
PARAMETER
Power Dissipation Capacitance
SYMBOL
TEST CONDITIONS
CPD
No Load
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MIN
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CMOS IC
TEST CIRCUIT AND WAVEFORMS
Parameter
tPZH
ten
tPZL
tPZH
tdis
tPZL
tPD or tt
t PLH
RL
CL
1KΩ
50 pF or 150 pF
1KΩ
50 pF
—
50 pF or 150 pF
t PZL
t PLZ
t PZH
t PHZ
t PHL
Note: CL includes probe and jig capacitance.
All input pulses are supplied by generators having the following characteristics: PRR ≤1MHz, Zo = 50Ω,
tr=6ns, tf=6ns.
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.
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