SN74LVC126A-Q1
www.ti.com .................................................................................................................................................. SCAS763B – FEBRUARY 2004 – REVISED APRIL 2008
QUADRUPLE BUS BUFFER GATE
WITH 3-STATE OUTPUTS
FEATURES
1
•
•
•
•
•
•
•
•
Qualified for Automotive Applications
Operates From 1.65 V to 3.6 V
Inputs Accept Voltages to 5.5 V
Max tpd of 4.7 ns at 3.3 V
Typical VOLP (Output Ground Bounce) 2 V at
VCC = 3.3 V, TA = 25°C
Latch-Up Performance Exceeds 250 mA Per
JESD 17
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
D OR PW PACKAGE
(TOP VIEW)
1OE
1A
1Y
2OE
2A
2Y
GND
1
14
2
13
3
12
4
11
5
10
6
9
7
8
VCC
4OE
4A
4Y
3OE
3A
3Y
DESCRIPTION/ORDERING INFORMATION
This quadruple bus buffer gate is designed for 1.65-V to 3.6-V VCC operation.
The SN74LVC126A features independent line drivers with 3-state outputs. Each output is disabled when the
associated output-enable (OE) input is low.
To ensure the high-impedance state during power up or power down, OE should be tied to GND through a
pulldown resistor; the minimum value of the resistor is determined by the current-sourcing capability of the driver.
Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator in
a mixed 3.3-V/5-V system environment.
ORDERING INFORMATION (1)
PACKAGE (2)
TA
–40°C to 125°C
(1)
(2)
ORDERABLE PART NUMBER
TOP-SIDE MARKING
SOIC – D
Reel of 2500
SN74LVC126AQDRQ1
LC126AQ
TSSOP – PW
Reel of 2000
SN74LVC126AQPWRQ1
LC126AQ
For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
FUNCTION TABLE
(EACH BUFFER)
INPUTS
OE
A
OUTPUT
Y
H
H
H
H
L
L
L
X
Z
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2004–2008, Texas Instruments Incorporated
SN74LVC126A-Q1
SCAS763B – FEBRUARY 2004 – REVISED APRIL 2008 .................................................................................................................................................. www.ti.com
LOGIC DIAGRAM (POSITIVE LOGIC)
1OE
1A
2OE
2A
1
3OE
2
3
1Y
3A
4
4OE
5
6
2Y
4A
10
9
8
3Y
13
12
11
4Y
Absolute Maximum Ratings (1)
over operating free-air temperature range (unless otherwise noted)
VCC
MIN
MAX
Supply voltage range
–0.5
6.5
UNIT
V
(2)
–0.5
6.5
V
–0.5
VCC + 0.5
VI
Input voltage range
VO
Output voltage range (2) (3)
IIK
Input clamp current
VI < 0
–50
mA
IOK
Output clamp current
VO < 0
–50
mA
IO
Continuous output current
±50
mA
±100
mA
Continuous current through VCC or GND
θJA
Package thermal impedance (4)
Tstg
Storage temperature range
(1)
(2)
(3)
(4)
2
D package
86
PW package
113
–65
150
V
°C/W
°C
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
The input and output negative-voltage ratings may be exceeded if the input and output current ratings are observed.
The value of VCC is provided in the recommended operating conditions table.
The package thermal impedance is calculated in accordance with JESD 51-7.
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Copyright © 2004–2008, Texas Instruments Incorporated
Product Folder Link(s): SN74LVC126A-Q1
SN74LVC126A-Q1
www.ti.com .................................................................................................................................................. SCAS763B – FEBRUARY 2004 – REVISED APRIL 2008
Recommended Operating Conditions (1)
VCC
Operating
Supply voltage
Data retention only
High-level input voltage
MAX
1.65
3.6
1.5
VCC = 1.65 V to 1.95 V
VIH
MIN
Low-level input voltage
V
0.65 × VCC
VCC = 2.3 V to 2.7 V
1.7
VCC = 2.7 V to 3.6 V
2
V
0.35 × VCC
VCC = 1.65 V to 1.95 V
VIL
UNIT
VCC = 2.3 V to 2.7 V
0.7
VCC = 2.7 V to 3.6 V
0.8
V
VI
Input voltage
0
5.5
V
VO
Output voltage
0
VCC
V
VCC = 1.65 V
IOH
High-level output current
IOL
Low-level output current
Δt/Δv
Input transition rise or fall rate
TA
Operating free-air temperature
(1)
–4
VCC = 2.3 V
–8
VCC = 2.7 V
–12
VCC = 3 V
–24
VCC = 1.65 V
4
VCC = 2.3 V
8
VCC = 2.7 V
12
VCC = 3 V
24
–40
mA
mA
10
ns/V
125
°C
All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
Electrical Characteristics
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
IOH = –100 µA
VOH
1.65 V to 3.6 V
1.65 V
1.1
IOH = –8 mA
2.3 V
1.5
2.7 V
2.1
3V
2.35
IOH = –24 mA
3V
2.1
IOL = 100 µA
1.65 V to 3.6 V
0.2
IOL = 4 mA
1.65 V
0.45
IOL = 8 mA
2.3 V
0.7
IOL = 12 mA
2.7 V
0.5
IOL = 24 mA
II
VI = 5.5 V or GND
IOZ
VO = VCC or GND
ICC
VI = VCC or GND,
IO = 0
One input at VCC – 0.6 V,
Other inputs at VCC or GND
ΔICC
(1)
UNIT
VCC – 0.2
IOH = –4 mA
IOH = –12 mA
VOL
MIN TYP (1) MAX
VCC
V
V
3V
0.7
3.6 V
±10
µA
3.6 V
±10
µA
3.6 V
20
µA
2.7 V to 3.6 V
500
µA
Ci
VI = VCC or GND
3.3 V
4.5
pF
Co
VO = VCC or GND
3.3 V
7
pF
All typical values are at VCC = 3.3 V, TA = 25°C.
Copyright © 2004–2008, Texas Instruments Incorporated
Product Folder Link(s): SN74LVC126A-Q1
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3
SN74LVC126A-Q1
SCAS763B – FEBRUARY 2004 – REVISED APRIL 2008 .................................................................................................................................................. www.ti.com
Switching Characteristics
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1)
FROM
(INPUT)
TO
(OUTPUT)
tpd
A
ten
OE
tdis
OE
PARAMETER
VCC = 2.7 V
VCC = 3.3 V
± 0.3 V
UNIT
MIN
MAX
MIN
MAX
Y
1
6.2
1
5.7
ns
Y
1
6.3
1
5.7
ns
Y
1
6.7
1
6
ns
1
ns
tsk(o)
Operating Characteristics
TA = 25°C
TEST
CONDITIONS
PARAMETER
Cpd
4
Power dissipation capacitance per gate
Outputs enabled
Outputs disabled
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f = 10 MHz
VCC = 3.3 V
TYP
22
4
UNIT
pF
Copyright © 2004–2008, Texas Instruments Incorporated
Product Folder Link(s): SN74LVC126A-Q1
SN74LVC126A-Q1
www.ti.com .................................................................................................................................................. SCAS763B – FEBRUARY 2004 – REVISED APRIL 2008
PARAMETER MEASUREMENT INFORMATION
VLOAD
S1
RL
From Output
Under Test
CL
(see Note A)
Open
GND
RL
TEST
S1
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Open
VLOAD
GND
LOAD CIRCUIT
INPUT
VCC
2.7 V
3.3 V ± 0.3 V
VM
tr/tf
VI
≤ 2.5 ns
≤ 2.5 ns
2.7 V
2.7 V
1.5 V
1.5 V
VLOAD
6V
6V
CL
RL
V∆
50 pF
50 pF
500 Ω
500 Ω
0.3 V
0.3 V
VI
Timing Input
VM
0V
tw
tsu
VI
Input
VM
VM
th
VI
Data Input
VM
VM
0V
0V
VOLTAGE WAVEFORMS
PULSE DURATION
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
VI
VM
Input
VM
0V
tPLH
VM
VM
VOL
tPHL
VM
VM
0V
tPLZ
Output
Waveform 1
S1 at VLOAD
(see Note B)
tPLH
VLOAD/2
VM
tPZH
VOH
Output
VM
tPZL
tPHL
VOH
Output
VI
Output
Control
VM
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
VOL + V∆
VOL
tPHZ
Output
Waveform 2
S1 at GND
(see Note B)
VM
VOH - V∆
VOH
≈0 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
NOTES: A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50 Ω.
D. The outputs are measured one at a time, with one transition per measurement.
E. tPLZ and tPHZ are the same as tdis.
F. tPZL and tPZH are the same as ten.
G. tPLH and tPHL are the same as tpd.
H. All parameters and waveforms are not applicable to all devices.
Figure 1. Load Circuit and Voltage Waveforms
Copyright © 2004–2008, Texas Instruments Incorporated
Product Folder Link(s): SN74LVC126A-Q1
Submit Documentation Feedback
5
PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
(4/5)
(6)
CLVC126AQPWRG4Q1
ACTIVE
TSSOP
PW
14
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
LC126AQ
SN74LVC126AQDRG4Q1
ACTIVE
SOIC
D
14
2500
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
LC126AQ
SN74LVC126AQDRQ1
ACTIVE
SOIC
D
14
2500
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
LC126AQ
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
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