74AHCT126
QUADRUPLE 3-STATE BUFFERS OE HIGH
Description
The 74AHCT126 provides four independent buffer gates with 3-state
outputs. Each buffer has a separate enable pin that if 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 4.5V to 5.5V.
Pin Assignments
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)
2000-V Human Body Model (A114)
Exceeds 1000-V Charged Device Model (C101)
•
•
•
•
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 ROMs
TVs, DVDs, DVRs, Set Top Boxes
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.
74AHCT126
Document number: DS35356 Rev. 3 - 2
1 of 9
www.diodes.com
April 2015
© Diodes Incorporated
74AHCT126
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 V
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.
Recommended Operating Conditions
(Note 5) (T
A
= +25°C, unless otherwise specified.)
Symbol
V
CC
V
I
V
O
t/ V
T
A
Note:
Parameter
Supply Voltage
Input Voltage
Output Voltage
Input transition Rise or Fall Rate
Operating Free-Air Temperature
Min
4.5
0
0
-
-40
Max
5.5
5.5
V
CC
20
+125
Unit
V
V
V
ns/V
°
C
5. Unused inputs should be held at V
CC
or Ground.
74AHCT126
Document number: DS35356 Rev. 3 - 2
3 of 9
www.diodes.com
April 2015
© Diodes Incorporated
74AHCT126
Parameter Measurement Information
TEST
t
PLH
/t
PHL
t
PLZ
/t
PZL
t
PHZ
/t
PZH
S1
Open
Vload
GND
Vcc
4.5V to 5.5V
Inputs
V
I
3V
t
r
/t
f
≤3ns
V
M
Inputs
1.5 V
V
M
Outputs
V
CC
/2
V
LOAD
V
CC
C
L
15pF, 50pF
R
L
1K
V
0.3V
Output
Control
V
l
V
M
V
M
0V
t
PZL
V
M
t
PLZ
V
OL +
V
t
PHZ
V
M
V
OH -
V
V
OH
0V
V
LOAD
/2
V
OL
Voltage Waveform Pulse Duration
Output
Waveform 1
S1 at V
LOAD
(see Note B)
Output
Waveform 2
S1 at GND
(see Note B)
t
PZH
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.
74AHCT126
Document number: DS35356 Rev. 3 - 2
5 of 9
www.diodes.com
April 2015
© Diodes Incorporated
微控制器 MCU
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
