Datasheet

UNISONIC TECHNOLOGIES CO., LTD
U74HCT125
CMOS IC
QUADRUPLE BUS BUFFER
GATES WITH 3-STATE OUTPUTS
„
DESCRIPTION
The U74HCT125 is a quadruple bus buffer gates with 3-state
output. When OE is high, the Y outputs are in a high-impedance
state. When OE is low, the device passes noninverted data from the
A input to the Y output.
To ensure the high-impedance state during power up or power
down, OE should be tied to VCC through a pull-up resistor; the
minimum value of the resistor is determined by the current-sinking
capability of the driver.
„
FEATURES
* TTL-Voltage Compatible
* Max tPD of 12 ns from A to Y at 5.5 V, CL = 50 pF
* Low power consumption, ICC = 8μA (Max) at 5.5V
* ±6mA output driver at 5V
„
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
U74HCT125L-S14-T
U74HCT125G-S14-T
U74HCT125L-S14-R
U74HCT125G-S14-R
U74HCT125L-P14-T
U74HCT125G-P14-T
U74HCT125L-P14-R
U74HCT125G-P14-R
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Copyright © 2012 Unisonic Technologies Co., Ltd
Package
Packing
SOP-14
SOP-14
TSSOP-14
TSSOP-14
Tube
Tape Reel
Tube
Tape Reel
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U74HCT125
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CMOS IC
PIN CONFIGURATION
FUNCTION TABLE (each buffer)
INPUTS
OE
A
H
L
X
L
L
H
„
OUTPUTS
Y
H
L
Z
LOGIC DIAGRAM (each buffer)
OE
A
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Y
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CMOS IC
ABSOLUTE MAXIMUM RATING (unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC
-0.5~7
V
Input Voltage
VIN
-0.5~7
V
Output Voltage
VOUT
-0.5~VCC +0.5
V
Input Clamp Current (VIN<0, or VIN>0)
IIK
±20
mA
Output Clamp Current (VOUT<0, or VOUT>VCC)
IOK
±20
mA
Output Current
IOUT
±35
mA
VCC or GND Current
ICC
±70
mA
Storage Temperature
TSTG
-65 ~ +150
°C
Note: 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
High-Level Input Voltage (VCC =4.5V to 5.5V)
Low-Level Input Voltage (VCC = 4.5V to 5.5V)
Input Voltage
Output Voltage
Input Transition Rise or Fall Rate
Operating Temperature
„
SYMBOL
VCC
VIH
VIL
VIN
VOUT
Δt/Δv
TA
MIN
4.5
2
TYP
5
MAX
5.5
25
0.8
VCC
VCC
500
85
0
0
-40
UNIT
V
V
V
V
V
ns/V
°C
ELECTRICAL CHARACTERISTICS (TA =25°C , unless otherwise specified)
PARAMETER
SYMBOL
High-Level Output Voltage
VOH
Low-Level Output Voltage
VOL
Input Leakage Current
(A or OE input)
High-Impedance State Current
Quiescent Supply Current
Additional Quiescent Supply Current
Input Capacitance
II(LEAK)
IOZ
ICC
ΔICC
CIN
TEST CONDITIONS
IOH = -20μA, VCC =4.5 V
IOH = -6 mA, VCC =4.5 V
IOL = 20 μA, VCC =4.5 V
IOL = 6 mA , VCC =4.5 V
TYP
4.5
4.3
0.001
0.17
MAX UNIT
0.1
0.26
V
VIN = 5.5V or GND, VCC =5.5 V
±0.1
±100
μA
VOUT = VCC or GND, VCC =5.5 V
VIN = VCC or GND, IOUT = 0, VCC =5.5 V
One input at 0.5V or 2.4V, VCC =5.5 V,
other inputs at VCC or GND
VCC =4.5V to 5.5 V
±0.01
±0.5
8
μA
μA
1.4
2.4
mA
3
10
pF
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MIN
4.4
3.98
V
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CMOS IC
SWITCHING CHARACTERISTICS
(CL = 50 pF, TA =25°C)
PARAMETER
SYMBOL
TEST CONDITIONS
VCC =4.5 V
Propagation Delay from Input A to
tPLH/ tPHL
Output Y, tPD
VCC =5.5 V
V
Propagation Delay from Input OE
CC =4.5 V
tPZH/ tPZL
VCC =5.5 V
to Output Y, tEN
VCC =4.5 V
Propagation delay from input OE to
tPHZ/ tPLZ
output Y, tDIS
VCC =5.5 V
VCC =4.5 V
Output transition (rise and fall) time,
tTLH/ tTHL
tT
VCC =5.5 V
(CL = 150 pF, TA =25°C)
PARAMETER
SYMBOL
TEST CONDITIONS
VCC =4.5 V
Propagation Delay from Input A to
tPLH/ tPHL
Output Y, tPD
VCC =5.5 V
VCC =4.5 V
Propagation Delay from Input OE
tPZH/ tPZL
VCC =5.5 V
to Output Y, tEN
VCC =4.5 V
Output transition (rise and fall) time,
tTLH/ tTHL
tT
VCC =5.5 V
„
MIN
MIN
TYP
15
12
18
15
15
13
8
7
MAX
26
23
28
25
26
23
15
14
UNIT
TYP
19
16
25
21
17
14
MAX
36
32
40
35
42
38
UNIT
ns
ns
ns
ns
ns
ns
ns
OPERATING CHARACTERISTICS (TA =25°C)
PARAMETER
Power dissipation capacitance
SYMBOL
CPD
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TEST CONDITIONS
TYP
35
UNIT
pF
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CMOS IC
TEST CIRCUIT AND WAVEFORMS
VCC
5V±0.5V
Input
VIN
tR, tF
VCC
≤3ns
TEST
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
S1
Open
VLOAD
GND
VM
VLOAD
CL
RL
VΔ
VCC/2
VCC
50pF
150pF
1kΩ
0.5V
VIN
Input
VM
VM
0V
tPHL
tPLH
VOH
Output
VM
VM
tR
tPHL
tF
VOL
tPLH
VOH
Output
VM
tF
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VM
tR
VOL
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CMOS IC
TEST CIRCUIT AND WAVEFORMS(Cont.)
VIN
Input
VM
VM
0V
tPLZ
tPZL
VLOAD
Output
VM
S1 at VLOAD
VOL
tPZH
tPHZ
-
Output
VOH
VM
S1 at GND
0V
Voltage Waveforms Enable and Disable Times
Notes: 1. CL includes probe and jig capacitance.
2. All input pulses are supplied by generators having the following characteristics: PRR ≤1MHz, ZO = 50Ω.
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.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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