Datasheet

UNISONIC TECHNOLOGIES CO., LTD
U74ACT125
CMOS IC
QUAD BUFFER WITH 3-STATE
OUTPUTS

DESCRIPTION
The U74ACT125 contains four independent non-inverting
buffers with 3-STATE outputs.

SOP-14
FEATURES
* Outputs source/sink 24mA
*ACT125 has TTL-compatible outputs

ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
U74ACT125L-S14-R
U74ACT125G-S14-R
www.unisonic.com.tw
Copyright © 2013 Unisonic Technologies Co., Ltd
Package
Packing
SOP-14
Tape Reel
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QW-R502-991.A
UNISONIC TECHNOLOGIES CO., LTD
U74ACT125
CMOS IC

PIN CONFIGURATION

FUNCTION TABLE (each gate)
INPUTS
OUTPUT
An
Bn
On
L
L
L
L
H
H
H
X
Z
H=HIGH Voltage Level; L=LOW Voltage Level
Z=HIGH Impedance; X=Immaterial

LOGIC DIAGRAM (positive logic)
A0
B0
O0
A1
B1
O1
B0
IEEE/IEC
1
A0
EN
B1
O0
O1
A1
A2
B2
O2
A3
B3
B2
B3
O3
O3
A3
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O2
A2
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Ver. A
U74ACT125

CMOS IC
ABSOLUTE MAXIMUM RATING (unless otherwise specified)(Note 1)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC
-0.5~7
V
Input Voltage
VIN
-0.5~ VCC+0.5
V
Output Voltage(active mode)
VOUT
-0.5~VCC+0.5
V
Input Diode Current(VIN=-0.5V)
IIK
-20
mA
Input Diode Current(VIN=VCC+0.5V)
IIK
+20
mA
Output Diode Current(VIN=-0.5V)
IOK
-20
mA
Output Diode Current(VIN=VCC+0.5V)
IOK
+20
mA
Output Current
IOUT
±50
mA
VCC or GND Current
ICC
±100
mA
Storage Temperature
TSTG
-65 ~ +150
°C
Notes: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. 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 COMDITIONS
PARAMETER
Supply Voltage
Input Voltage
Output Voltage
SYMBOL
VCC
VIN
VOUT
Minimum Input Edge Rate
∆v/∆t
Operating Temperature

CONDITIONS
MIN
4.5
0
0
TYP
MAX
5.5
VCC
VCC
UNIT
V
V
V
125
mV/ns
+85
°C
TYP
1.5
1.5
1.5
1.5
4.49
5.49
MAX
UNIT
0.001
0.001
0.1
0.1
0.36
0.36
±0.1
μA
4
μA
VIN from 0.8V to 2.0V
VCC @ 4.5V, 5.5V
TA
-40
STATIC CHARACTERISTICS (TA=25°C, unless otherwise specified)
PARAMETER
SYMBOL
HIGH Level Input Voltage
VIH
LOW Level Input Voltage
VIL
High-Level Output Voltage
Low-Level Output Voltage
Input Leakage Current
VOH
VOL
II(LEAK)
Quiescent Supply Current
ICC
Maximum ICC/Input
Input Capacitance
ICCT
CIN
3-STATE Current
IOZ
TEST CONDITIONS
VCC=4.5V
VCC=5.5V
VCC=4.5V
VCC=5.5V
VCC=4.5V
IOH=-50uA
VCC=5.5V
VCC=4.5V
IOH=-24mA
VCC=5.5V
VCC=4.5V
IOL=50uA
VCC=5.5V
VCC=4.5V
IOL=24mA
VCC=5.5V
VCC = 5.5V, VIN=VCC or GND
VCC = 5.5V, VIN=5.5V or GND
IOUT=0
VCC = 5.5V, VI=VCC-2.1V
VCC =OPEN
VCC=5.5V, VI=VIL, VIH
VO=VCC, GND
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
MIN
2
2
4.4
5.4
3.86
4.86
V
0.8
0.8
V
V
0.6
4.5
V
mA
pF
±0.5
μA
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U74ACT125
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CMOS IC
DYNAMIC CHARACTERISTICS (TA=25°C, unless otherwise specified)
See Fig. 1 and Fig. 2 for test circuit and waveforms.
PARAMETER
SYMBOL
TEST CONDITIONS
tPLH
Propagation Delay Data to Output
tPHL
VCC=5V, tr = tf =3ns,
tPZH
CL=50pF, RL=500Ω,
Output Enable Time
tPZL
f=1MHz
tPHZ
Output disable Time
tPLZ

MIN
1
1
1
1
1
1
TYP
6.5
7
6.0
7.0
7.0
7.5
MAX
9
9
8.5
9.5
9.5
10
UNIT
MIN
TYP
45
MAX
UNIT
pF
ns
ns
ns
ns
ns
OPERATING CHARACTERISTICS
PARAMETER
Power Dissipation Capacitance
SYMBOL
TEST CONDITIONS
CPD
VCC=5V
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QW-R502-991. A
U74ACT125

CMOS IC
TEST CIRCUIT AND WAVEFORMS
Note: CL includes probe and jig capacitance.
TEST
tPLH, tPHL
tPLZ, tPZL
tPZH, tPHZ
SWITCH
Open
2VCC
Open
Fig. 1 Load circuitry for switching times.
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QW-R502-991. A
U74ACT125

CMOS IC
TEST CIRCUIT AND WAVEFORMS (Cont.)
Fig. 2 Propagation delay from input to output and Output transition time
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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