74AHC126
QUADRUPLE 3-STATE BUFFERS OE HIGH
Description
The 74AHC126 provides provides four independent buffer gates with
3-state outputs. Each buffer has a separate enable pin that when
driven with a low logic level places the corresponding output in the
high impedance state. The device is designed for operation with a
power supply range of 2.0V to 5.5V. The inputs are tolerant to 5.5V
allowing this device to be used in a mixed voltage environment.
Pin Assignments
NEW PRODUCT
Features
•
•
•
•
•
•
Wide Supply Voltage Range from 2.0V to 5.5V
Outputs Sink or Source 8mA at V
CC
= 4.5V
CMOS Low Power Consumption
Schmitt Trigger Action at All Inputs
Inputs can be driven by 3.3V or 5.5V allowing for voltage
translation applications.
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
74AHC126
Document number: DS35346 Rev. 3 - 2
1 of 9
www.diodes.com
January 2013
© Diodes Incorporated
74AHC126
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
Data Input
Data Output
Data Enable Input
Data Input
Data Output
Ground
Data Output
Data Input
Data Enable Input
Data Output
Data Input
Data Enable Input
Supply Voltage
(active low)
Logic Diagram
(active low)
NEW PRODUCT
(active low)
(active low)
Function Table
Inputs
OE
H
H
L
A
H
L
X
Output
Y
H
L
Z
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
< -0.5V
V
O
> V
CC
+0.5V
Rating
2
1
200
-0.5 to +7.0
-0.5 to +7.0
-20
-20
25
+/- 25
75
-75
-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 -0.5V < V
O
V
CC
+0.5V
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.
74AHC126
Document number: DS35346 Rev. 3 - 2
2 of 9
www.diodes.com
January 2013
© Diodes Incorporated
74AHC126
Recommended Operating Conditions
(Note 5) (@T
A
= +25°C, unless otherwise specified.)
Symbol
V
CC
V
I
V
O
Δt/ΔV
Parameter
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.
Conditions
Min
2.0
0
0
Max
5.5
5.5
V
CC
100
20
Unit
V
V
V
ns/V
°C
V
CC
= 3.0V to 3.6V
V
CC
= 4.5V to 5.5V
-40
NEW PRODUCT
T
A
Note:
+125
Electrical Characteristics
(@T
A
= +25°C, unless otherwise specified.)
Symbol
Parameter
Test Conditions
V
CC
2.0V
3.0V
5.5V
2.0V
3.0V
5.5V
I
OH
= -50μA
V
OH
High-Level
Output Voltage
I
OH
= -50μA
I
OH
= -50μA
I
OH
= -4mA
I
OH
= -8mA
I
OL
= 50μA
V
OL
Low-Level
Output Voltage
I
OL
= 50μA
I
OL
= 50μA
I
OL
= 4mA
I
OL
= 8mA
I
OZ
I
I
I
CC
Z State
Leakage
Current
Input Current
Supply Current
V
O
= 0 to 5.5V
V
I
= GND or 5.5V
V
I
= GND to 5.5V
V
I
= GND or V
CC
, I
O
= 0
2.0V
3.0V
4.5V
3.0V
4.5V
2.0V
3.0V
4.5V
3.0V
4.5V
5.5V
3.6V
3.6V
1.9
2.9
4.4
2.48
3.80
0.1
0.1
0.1
0.44
0.44
±2.5
±1
20
T
A
= -40°C to +85°C
Min
1.5
2.1
3.85
0.5
0.9
1.65
1.9
2.9
4.4
2.40
3.70
0.1
0.1
0.1
0.55
0.55
±10
±2
40
μA
μA
μA
V
V
Max
T
A
= -40°C to +125°C
Min
1.5
2.1
3.85
0.5
0.9
1.65
V
V
Max
Unit
V
IH
High-Level
Input Voltage
V
IL
Low-Level Input
Voltage
74AHC126
Document number: DS35346 Rev. 3 - 2
3 of 9
www.diodes.com
January 2013
© Diodes Incorporated
74AHC126
Parameter Measurement Information
TEST
t
PLH
/t
PHL
t
PLZ
/t
PZL
t
PHZ
/t
PZH
S1
Open
Vload
GND
NEW PRODUCT
V
CC
3.3V±0.3V
5V±0.5V
Inputs
V
I
3V
V
CC
t
r
/t
f
≤3ns
≤3ns
V
M
V
CC
/2
V
CC
/2
V
LOAD
V
CC
V
CC
C
L
15,50 pF
15,50 pF
R
L
1KΩ
1KΩ
V∆
0.3 V
0.3 V
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
.
74AHC126
Document number: DS35346 Rev. 3 - 2
5 of 9
www.diodes.com
January 2013
© Diodes Incorporated
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