Datasheet

UNISONIC TECHNOLOGIES CO., LTD
U74HCT541
CMOS IC
OCTAL BUFFERS AND LINE
DRIVERS WITH 3-STATE
OUTPUTS
„
DESCRIPTION
The U74HCT541 is octal buffers and line drivers are with
3-state outputs and 8 channels.
The 3-state control gate is a 2-input NOR. If either
TSSOP-20
output-enable( OE1 or OE2 )input is high,all eight outputs are in
the high-impedance state.The ‘UCTHCT541’ devices provide true
data at the outputs.
„
FEATURES
* Operating Voltage Range of 4.5V to 5.5V
* High-Current 3-State Outputs Interface Directly With System
Bus or Can Drive Up To 15 LSTTL Loads
* Low Power Consumption ICC: 4μA (Max.)
* Typical tpd=12ns
* ±6mA Output Drive at 5V
* Low Input Current of 1uA max`
* Inputs Are TTL-Voltage Compatible
* Data Flow-Through Pinout(All Inputs on Opposite Side From
Outputs)
„
ORDERING INFORMATION
Ordering Number
Lead Free
U74HCT541L-P20-T
U74HCT541L-P20-R
Halogen Free
U74HCT541G-P20-T
U74HCT541G-P20-R
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Copyright © 2013 Unisonic Technologies Co., Ltd
Package
Packing
TSSOP-20
TSSOP-20
Tube
Tape Reel
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U74HCT541
CMOS IC
„
PIN CONFIGURATION
„
FUNCTION TABLE
INPUTS( OE1 )
L
L
H
X
INPUTS( OE2 )
L
L
X
H
Note: H: HIGH Voltage Level
INPUTS(A)
OUTPUT(Y)
L
H
X
X
L
H
Z
Z
L: LOW Voltage Level
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Z: High Impedance
X: Don’ Care
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U74HCT541
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LOGIC SYMBOL
„
LOGIC DIAGRAM
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CMOS IC
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U74HCT541
„
CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC
-0.5 ~ 7
V
Input Voltage
VIN
-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
TA
-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.
„
THERMAL DATA
PARAMETER
Junction to Ambient
„
SYMBOL
θJA
SYMBOL
VCC
VIH
VIL
VIN
VOUT
Δt/Δv
TEST CONDITIONS
VCC=4.5V~5.5V
VCC=4.5V~5.5V
MIN
4.5
2
TYP
5
MAX
5.5
0.8
VCC
VCC
500
0
0
UNIT
V
V
V
V
V
ns
ELECTRICAL CHARACTERISTICS (TA=25°С)
PARAMETER
Output Voltage Low-Level
Input Leakage Current
SYMBOL
VOL
II(LEAK)
3-state Output Off-state Current
IOZ
Quiescent Supply Current
Additional Quiescent Device
Current Per Input Pin
Input Capacitance
ICC
„
UNIT
°C/W
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Supply Voltage
High-level Input Voltage
Low-level Input Voltage
Input Voltage
Output Voltage
Input transition Rise or Fall rate
„
RATINGS
83
ΔICC
CI
TEST CONDITIONS
VCC=4.5V, VI=VIH or VIL, IOH=-20μA
VCC=5.5V, VI=VIH or VIL, IOH=-20μA
VCC=4.5V, VI=VIH or VIL, IOH=-6mA
VCC=4.5V, VI=VIH or VIL, IOL=20μA
VCC=5.5V, VI=VIH or VIL, IOH=20μA
VCC=4.5V, VI=VIH or VIL, IOL=6mA
VCC=5.5V, VIN= VCC or GND
VCC=5.5V, VOUT= VCC or GND,
VI=VIH or VIL
VCC=5.5V, VIN=VCC or GND, IOUT=0
VCC=5.5V, One input at 0.5V or 2.4V
Other inputs at 0 or VCC
VCC=4.5V~5.5V
MIN
4.4
5.4
3.98
TYP MAX
4.499
5.499
4.3
0.001 0.1
0.001 0.1
0.17 0.26
±0.1 ±100
±0.01
UNIT
V
nA
±0.5
μA
4
μA
1.4
2.4
mA
3
10
pF
TYP
13
13
21
19
19
18
8
7
MAX
23
21
30
27
30
27
12
11
UNIT
SWITCHING CHARACTERISTICS(TA=25°С,CL=50pF)
PARAMETER
SYMBOL
From A to Y
tPLH/tPHL
From OE to Y
tPZL/tPZH
From OE to Y
tPLZ/tPHZ
Y
tt
TEST CONDITIONS
VCC=4.5V
VCC=5.5V
VCC=4.5V
VCC=5.5V
VCC=4.5V
VCC=5.5V
VCC=4.5V
VCC=5.5V
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MIN
ns
ns
ns
ns
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CMOS IC
SWITCHING CHARACTERISTICS(TA=25°С,CL=150pF)
PARAMETER
SYMBOL
From A to Y
tPLH/tPHL
From OE to Y
tPZL/tPZH
Y
„
tt
TEST CONDITIONS
VCC=4.5V
VCC=5.5V
VCC=4.5V
VCC=5.5V
VCC=4.5V
VCC=5.5V
MIN
TYP
20
19
26
25
17
14
MAX
33
30
40
36
42
38
UNIT
TYP
MAX
UNIT
ns
ns
ns
OPERATING CHARACTERISTICS(TA=25°С)
PARAMETER
Power Dissipation Capacitance
Per buffer/driver
SYMBOL
CPD
TEST CONDITIONS
No Load
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MIN
35
pF
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U74HCT541
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CMOS IC
TEST CIRCUIT AND WAVEFORMS
VIN
Input OE
VIN
Input
A
50%
50%
tPLH
tPHL
0V
90%
50%
10%
Output
tPLH
tr
50%
50%
tPZL
tPLZ
VCC
Output
50%
90%
50%
10%
tf
0V
VOH
tPZH
10%
VOL
tPHZ
VOH
VOL
Output
50%
90%
0V
Notes: 1. CL includes probe and test-fixture capacitance.
2. 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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www.unisonic.com.tw
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