74AHCT125
QUADRUPLE 3-STATE BUFFERS OE LOW
Description
The 74AHCT125 provides provides four independent buffer gates
with 3-state outputs. Each buffer has a separate enable pin that if
driven with a high logic level places the corresponding output in the
high impedance state. The device is designed for operation with a
power supply range of 4.5V to 5.5V.
Pin Assignments
NEW PRODUCT
Features
•
•
•
•
•
•
Wide Supply Voltage Range from 4.5V to 5.5V
Inputs Are TTL Voltage Level Compatible
Outputs Sink or Source 8mA at V
CC
= 4.5V
CMOS Low Power Consumption
Schmitt Trigger Action at All Inputs
ESD Protection Exceeds JESD 22
200-V Machine Model (A115-A)
2000-V Human Body Model (A114-A)
Exceeds 1000-V Charged Device Model (C101C)
•
•
•
•
Latch-Up Exceeds 250mA per JESD 78, Class II
Range of Package Options SO-14 and TSSOP-14
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
•
•
General Purpose Logic
Wide array of products such as:
PCs, Networking, Notebooks, Netbooks
Computer Peripherals, Hard Drives, CD/DVD ROM
TV, DVD, DVR, Set Top Box
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Click here for ordering information, located at the end of datasheet
74AHCT125
Document number: DS35355 Rev. 3 - 2
1 of 8
www.diodes.com
January 2013
© Diodes Incorporated
74AHCT125
Pin Descriptions
Pin
Pin Name
Number
1
1OE
2
1A
3
1Y
4
2OE
5
2A
6
2Y
7
GND
8
3Y
9
3A
10
3OE
11
4Y
12
4A
13
4OE
14
V
CC
Function
Data Enable Input (active low)
Data Input
Data Output
Data Enable Input (active low)
Data Input
Data Output
Ground
Data Output
Data Input
Data Enable Input (active low)
Data Output
Data Input
Data Enable Input (active low)
upply Voltage
Logic Diagram
NEW PRODUCT
Function Table
Inputs
Output
A
H
L
X
Y
H
L
Z
OE
L
L
H
Absolute Maximum Ratings
(Note 4) (@T
A
= +25°C, unless otherwise specified.)
Symbol
ESD HBM
ESD CDM
ESD MM
V
CC
V
I
I
IK
I
OK
I
OK
I
O
I
CC
I
GND
T
J
T
STG
P
TOT
Note:
Description
Human Body Model ESD Protection
Charged Device Model ESD Protection
Machine Model ESD Protection
Supply Voltage Range
Input Voltage Range
Input Clamp Current
Output Clamp Current
Output Clamp Current
V
I
< -0.5V
V
O
< 0V
V
O
> V
CC
Rating
2
1
200
-0.5 to +7.0
-0.5 to +7.0
-20
-20
20
+/- 25
50
-50
-40 to +150
-65 to +150
500
Unit
KV
KV
V
V
V
mA
mA
mA
mA
mA
mA
°C
°C
mW
Continuous Output Current 0V < V
O
< V
CC
Continuous Current Through V
CC
Continuous Current Through GND
Operating Junction Temperature
Storage Temperature
Total Power Dissipation
4. Stresses beyond the absolute maximum may result in immediate failure or reduced reliability. These are stress values and device operation should
be within recommend values.
74AHCT125
Document number: DS35355 Rev. 3 - 2
2 of 8
www.diodes.com
January 2013
© Diodes Incorporated
74AHCT125
Recommended Operating Conditions
(Note 5) (@T
A
= +25°C, unless otherwise specified.)
Symbol
V
CC
V
I
V
O
Δt/ΔV
Supply Voltage
Input Voltage
Output Voltage
Input Transition Rise or Fall Rate
Operating Free-Air Temperature
5. Unused inputs should be held at V
CC
or Ground.
Parameter
Min
4.5
0
0
-40
Max
5.5
5.5
V
CC
20
+125
Unit
V
V
V
ns/V
°C
NEW PRODUCT
T
A
Note:
Electrical Characteristics
(@T
A
= +25°C, unless otherwise specified.)
Symbol
V
IH
V
IL
V
OH
V
OL
I
OZ
I
I
I
CC
ΔI
CC
Parameter
High-Level Input
Voltage
Low-Level Input
Voltage
High-Level
Output Voltage
I
OH
= -50μA
I
OH
= -8mA
Test Conditions
V
CC
4.5V to 5.5V
4.5V to 5.5V
4.5V
4.5V
4.5V
4.5V
5.5V
3.6V
3.6V
5.5V
4.4
3.80
0.1
0.44
±2.5
±1
20
1.35
T
A
= -40°C to +85°C
Min
Max
2.0
0.8
4.4
3.70
0.1
0.55
±10
±2
40
5
T
A
= -40°C to +125°C
Min
Max
2.0
0.8
Unit
V
V
V
V
μA
μA
μA
mA
Low-Level Output I
OL
= 50μA
Voltage
I
OL
= 8mA
Z State
V
O
= 0 to 5.5V
Leakage Current
Input Current
Supply Current
V
I
= GND to 5.5V
V
I
= GND or V
CC
, I
O
= 0
Additional Supply One input at V
CC
-2.1V
Current
Other pins at V
CC
or GND
Operating Characteristics
Parameter
Power Dissipation
Capacitance per Gate
Input Capacitance
Test
Conditions
f = 1MHz
V
i
= V
CC
– or
GND
V
CC
= 5.5V
Typ
14.8
4.0
Unit
pF
pF
C
pd
C
i
Switching Characteristics
Symbol
t
PD
t
EN
t
DIS
Parameter
Propagation Delay A
N
to Y
N
Enable Time OE
N
to Y
N
Disable Time OE
N
to Y
N
Test Conditions
Figure 1 C
L
= 15pF
Figure 1 C
L
= 50pF
Figure 1 C
L
= 15pF
Figure 1 C
L
= 50pF
Figure 1 C
L
= 15pF
Figure 1 C
L
= 50pF
T
A
= +25°C
Min
Typ.
Max
0.5
0.5
0.5
0.5
0.5
0.5
3.0
4.3
6.7
9.8
4.8
6.5
5.5
7.5
10.7
10.9
6.8
8.9
-40°C to +85°C
Min
0.5
0.5
0.5
0.5
0.5
0.5
Max
6.5
8.5
11.0
12.1
8.0
10.0
-40°C to +125°C
Min
0.5
0.5
0.5
0.5
0.5
0.5
Max
7.0
9.5
11.5
12.5
8.5
11.5
Unit
ns
ns
ns
74AHCT125
Document number: DS35355 Rev. 3 - 2
3 of 8
www.diodes.com
January 2013
© Diodes Incorporated
74AHCT125
Parameter Measurement Information
TEST
S1
Open
Vload
GND
NEW PRODUCT
t
PLH
/t
PHL
t
PLZ
/t
PZL
t
PHZ
/t
PZH
V
CC
4.5V to 5.5V
Inputs
V
I
3V
t
r
/t
f
≤3ns
V
M
Inputs
1.5V
V
M
Outputs
V
CC
/2
V
LOAD
V
CC
C
L
15pF, 50pF
R
L
1K
V∆
0.3V
Voltage Waveform Pulse Duration
Voltage Waveform Enable and Disable Times
Low and High Level Enabling
Voltage Waveform Propagation Delay Times
Inverting and Non Inverting Outputs
Figure 1. Load Circuit and Voltage Waveforms
Notes:
A. Includes test lead and test apparatus capacitance.
B. All pulses are supplied at pulse repetition rate
≤
1 MHz.
C. Inputs are measured separately one transition per measurement.
D. t
PLZ
and t
PHZ
are the same as t
dis
.
E. t
PZL
and t
PZH
are the same as t
EN0
.
F. t
PLH
and t
PHL
are the same as t
PD
.
74AHCT125
Document number: DS35355 Rev. 3 - 2
4 of 8
www.diodes.com
January 2013
© Diodes Incorporated
74AHCT125
Ordering Information
NEW PRODUCT
Part Number
74AHCT125S14-13
74AHCT125T14-13
Package Code
S14
T14
Packaging
SO-14
TSSOP-14
7” Tape and Reel
Quantity
Part Number Suffix
2500/Tape & Reel
-13
2500/Tape & Reel
-13
Marking Information
(1) SO-14, TSSOP-14
Part Number
74AHCT125S14
74AHCT125T14
Package
SO-14
TSSOP-14
74AHCT125
Document number: DS35355 Rev. 3 - 2
5 of 8
www.diodes.com
January 2013
© Diodes Incorporated
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