Product
Folder
Sample &
Buy
Support &
Community
Tools &
Software
Technical
Documents
SN54AHCT244, SN74AHCT244
SCLS228M – OCTOBER 1995 – REVISED JULY 2014
SNx4AHCT244 Octal Buffers/Drivers With 3-State Outputs
1 Features
3 Description
•
•
These octal buffers/drivers are designed specifically
to improve both the performance and density of
3-state memory-address drivers, clock drivers, and
bus-oriented receivers and transmitters.
1
•
Inputs Are TTL-Voltage Compatible
Latch-Up Performance Exceeds 250 mA
Per JESD 17
On Products Compliant to MIL-PRF-38535,
All Parameters Are Tested Unless Otherwise
Noted. On All Other Products, Production
Processing Does Not Necessarily Include Testing
of All Parameters.
Device Information(1)
PART NUMBER
SNx4AHCT244
2 Applications
•
•
•
•
•
Network Switches
Power Infrastructures
PCs and Notebooks
Wearable Health and Fitness Devices
Tests and Measurements
PACKAGE
BODY SIZE (NOM)
PDIP (20)
25.40 mm x 6.35 mm
SOP (20)
12.60 mm x 5.30 mm
SSOP (20)
7.50 mm x 5.30 mm
TVSOP (20)
5.00 mm x 4.40 mm
TSSOP (20)
6.50 mm x 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Simplified Schematic
1OE
1A1
1A2
1A3
1A4
1
2OE
2
18
4
16
6
14
8
12
1Y1
2A1
1Y2
2A2
1Y3
2A3
1Y4
2A4
19
11
9
13
7
15
5
17
3
2Y1
2Y2
2Y3
2Y4
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
SN54AHCT244, SN74AHCT244
SCLS228M – OCTOBER 1995 – REVISED JULY 2014
www.ti.com
Table of Contents
1
2
3
4
5
6
7
8
9
Features ..................................................................
Applications ...........................................................
Description .............................................................
Simplified Schematic.............................................
Revision History.....................................................
Pin Configuration and Functions .........................
Specifications.........................................................
1
1
1
1
2
3
4
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
4
4
4
4
5
5
5
6
6
Absolute Maximum Ratings ......................................
Handling Ratings.......................................................
Recommended Operating Conditions.......................
Thermal Information ..................................................
Electrical Characteristics...........................................
Switching Characteristics ..........................................
Noise Characteristics ................................................
Operating Characteristics..........................................
Typical Characteristics ..............................................
Parameter Measurement Information .................. 7
Detailed Description .............................................. 8
9.1
9.2
9.3
9.4
Overview ...................................................................
Functional Block Diagram .........................................
Feature Description...................................................
Device Functional Modes..........................................
8
8
8
8
10 Application and Implementation.......................... 9
10.1 Application Information............................................ 9
10.2 Typical Application ................................................. 9
11 Power Supply Recommendations ..................... 10
12 Layout................................................................... 10
12.1 Layout Guidelines ................................................. 10
12.2 Layout Example .................................................... 10
13 Device and Documentation Support ................. 11
13.1
13.2
13.3
13.4
Related Links ........................................................
Trademarks ...........................................................
Electrostatic Discharge Caution ............................
Glossary ................................................................
11
11
11
11
14 Mechanical, Packaging, and Orderable
Information ........................................................... 11
5 Revision History
Changes from Revision L (July 2003) to Revision M
Page
•
Updated document to new TI data sheet format. ................................................................................................................... 1
•
Removed Ordering Information table. .................................................................................................................................... 1
•
Added Military Disclaimer to Features List ............................................................................................................................ 1
•
Added Handling Ratings table. .............................................................................................................................................. 4
•
Changed MAX operating temperature from 85°C to 125°C in Recommended Operating Conditions table. ......................... 4
•
Added Thermal Information table. ......................................................................................................................................... 4
•
Added Typical Characteristics section. .................................................................................................................................. 6
•
Added Detailed Description section. ...................................................................................................................................... 8
•
Added Application and Implementation section. ................................................................................................................... 9
•
Added Layout section. ......................................................................................................................................................... 10
2
Submit Documentation Feedback
Copyright © 1995–2014, Texas Instruments Incorporated
Product Folder Links: SN54AHCT244 SN74AHCT244
SN54AHCT244, SN74AHCT244
www.ti.com
SCLS228M – OCTOBER 1995 – REVISED JULY 2014
6 Pin Configuration and Functions
SN54AHCT244 . . . J OR W PACKAGE
SN74AHCT244 . . . DB, DGV, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
VCC
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
1A2
2Y3
1A3
2Y2
1A4
2OE
2Y4
1A1
1OE
VCC
SN54AHCT244 . . . FK PACKAGE
(TOP VIEW)
4
3 2 1 20 19
18
5
17
6
16
7
15
14
8
1Y1
2A4
1Y2
2A3
1Y3
2Y1
GND
2A1
1Y4
2A2
9 10 11 12 13
Pin Functions
PIN
I/O
DESCRIPTION
1OE
I
Output Enable 1
1A1
I
Input 1A1
3
2Y4
O
Input 2Y4
4
1A2
I
Input 1A2
5
2Y3
O
Input 2Y3
6
1A3
I
Input 1A3
7
2Y2
O
Input 2Y2
8
1A4
I
Input 1A4
9
2Y1
O
Input 2Y1
10
GND
–
Ground Pin
11
2A1
I
Output 2A1
12
1Y4
O
Output 1Y4
13
2A2
I
Output 2A2
14
1Y3
O
Output 1Y3
15
2A3
I
Output 2A3
16
1Y2
O
Output 1Y2
17
2A4
I
Output 2A4
18
1Y1
O
Output 1Y1
19
2OE
I
Output Enable 2
20
VCC
–
Power Pin
NO.
NAME
1
2
Copyright © 1995–2014, Texas Instruments Incorporated
Product Folder Links: SN54AHCT244 SN74AHCT244
Submit Documentation Feedback
3
SN54AHCT244, SN74AHCT244
SCLS228M – OCTOBER 1995 – REVISED JULY 2014
www.ti.com
7 Specifications
7.1 Absolute Maximum Ratings (1)
over operating free-air temperature range (unless otherwise noted)
VCC
MIN
MAX
Supply voltage range
–0.5
7
UNIT
V
(2)
–0.5
7
V
–0.5
VCC + 0.5
VI
Input voltage range
VO
Output voltage range (2)
IIK
Input clamp current
VI < 0
–20
mA
IOK
Output clamp current
VO < 0 or VO > VCC
±20
mA
IO
Continuous output current
VO = 0 to VCC
±25
mA
±75
mA
Continuous current through VCC or GND
(1)
(2)
V
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 voltage ratings may be exceeded if the input and output current ratings are observed.
7.2 Handling Ratings
Tstg
Storage temperature range
V(ESD)
(1)
(2)
Electrostatic discharge
MIN
MAX
UNIT
°C
–65
150
Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all
pins (1)
0
2000
Charged device model (CDM), per JEDEC specification
JESD22-C101, all pins (2)
0
2000
V
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
7.3 Recommended Operating Conditions (1)
SN54AHCT244
SN74AHCT244
MIN
MAX
MIN
MAX
4.5
5.5
4.5
5.5
UNIT
VCC
Supply voltage
VIH
High-level input voltage
VIL
Low-level input voltage
VI
Input voltage
0
5.5
VO
Output voltage
0
VCC
IOH
High-level output current
–8
–8
mA
IOL
Low-level output current
8
8
mA
TA
Operating free-air temperature
125
°C
(1)
2
V
2
0.8
–55
125
V
0.8
V
0
5.5
V
0
VCC
V
–40
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 (SCBA004).
7.4 Thermal Information
SN74AHCT244
THERMAL METRIC (1)
DB
DGV
DW
N
NS
PW
20 PINS
20 PINS
20 PINS
20 PINS
20 PINS
20 PINS
RθJA
Junction-to-ambient thermal resistance
99.9
119.2
83.0
54.9
80.4
105.4
RθJC(top)
Junction-to-case (top) thermal resistance
61.7
34.5
48.9
41.7
46.9
39.5
RθJB
Junction-to-board thermal resistance
55.2
60.7
50.5
35.8
47.9
56.4
ψJT
Junction-to-top characterization parameter
22.6
1.2
21.1
27.9
19.9
3.1
ψJB
Junction-to-board characterization parameter
54.8
60.0
50.1
35.7
47.5
55.8
(1)
4
UNIT
°C/W
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
Submit Documentation Feedback
Copyright © 1995–2014, Texas Instruments Incorporated
Product Folder Links: SN54AHCT244 SN74AHCT244
SN54AHCT244, SN74AHCT244
www.ti.com
SCLS228M – OCTOBER 1995 – REVISED JULY 2014
7.5 Electrical Characteristics
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
IOH = –50 µA
VOH
IOL = 50 µA
II
ICC
∆ICC (2)
TA = 25°C
MIN
SN54AHCT244
TYP MAX
4.4
MIN
4.5
3.94
4.5 V
IOL = 8 mA
IOZ
(1)
(2)
4.5 V
IOH = –8 mA
VOL
VCC
SN74AHCT244
MAX
MIN
4.4
4.4
3.8
3.8
UNIT
MAX
V
0.1
0.1
0.1
0.36
0.44
0.44
V
VO = VCC or GND
5.5 V
±0.2
5
±2.5
±2.5
µA
VI = 5.5 V or GND
0 V to
5.5 V
±0.1
±1 (1)
±1
µA
VI = VCC or
GND,
IO = 0
5.5 V
4
40
40
µA
One input at 3.4 V,
Other inputs at VCC or
GND
5.5 V
1.35
1.5
1.5
mA
10
pF
Ci
VI = VCC or GND
5V
2.5
Co
VO = VCC or GND
5V
3
10
pF
On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V.
This is the increase in supply current for each input at one of the specified TTL voltage levels, rather than 0 V or VCC.
7.6 Switching Characteristics
over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 2)
PARAMETER
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
FROM
(INPUT)
TO
(OUTPUT)
LOAD
CAPACITANCE
A
Y
CL = 15 pF
OE
Y
CL = 15 pF
OE
Y
CL = 15 pF
A
Y
CL = 50 pF
OE
Y
CL = 50 pF
OE
Y
CL = 50 pF
tsk(o)
(1)
(2)
TA = 25°C
MIN
SN54AHCT244
SN74AHCT244
TYP
MAX
MIN
MAX
MIN
MAX
5.4 (1)
7.4 (1)
1 (1)
8.5 (1)
1
8.5
(1)
(1)
(1)
(1)
1
8.5
5.4
7.4
1
8.5
7.7 (1)
10.4 (1)
1 (1)
12 (1)
1
12
7.7 (1)
10.4 (1)
1 (1)
12 (1)
1
12
5 (1)
9.4 (1)
1 (1)
10 (1)
1
10
(1)
(1)
(1)
10 (1)
1
10
5
9.4
1
5.9
8.4
1
9.5
1
9.5
5.9
8.4
1
9.5
1
9.5
8.2
11.4
1
13
1
13
8.2
11.4
1
13
1
13
8.8
11.4
1
13
1
13
8.8
11.4
1
13
1
13
CL = 50 pF
1 (2)
UNIT
ns
ns
ns
ns
ns
ns
1
ns
On products compliant to MIL-PRF-38535, this parameter is not production tested.
On products compliant to MIL-PRF-38535, this parameter does not apply.
7.7 Noise Characteristics (1)
VCC = 5 V, CL = 50 pF, TA = 25°C
PARAMETER
VOH(V)
Quiet output, minimum dynamic VOH
VIH(D)
High-level dynamic input voltage
VIL(D)
Low-level dynamic input voltage
(1)
SN74AHCT244
MIN
TYP
MAX
UNIT
4.1
V
2
V
0.8
V
Characteristics are for surface-mount packages only.
Copyright © 1995–2014, Texas Instruments Incorporated
Product Folder Links: SN54AHCT244 SN74AHCT244
Submit Documentation Feedback
5
SN54AHCT244, SN74AHCT244
SCLS228M – OCTOBER 1995 – REVISED JULY 2014
www.ti.com
7.8 Operating Characteristics
VCC = 5 V, TA = 25°C
PARAMETER
Cpd
TEST CONDITIONS
Power dissipation capacitance
No load,
f = 1 MHz
TYP
UNIT
8.2
pF
7.9 Typical Characteristics
7
TPD in ns
6
TPD (ns)
5
4
3
2
1
0
-100
-50
0
50
Temperature (°C)
100
150
D001
Figure 1. TPD vs Temperature, 15 pF Load
6
Submit Documentation Feedback
Copyright © 1995–2014, Texas Instruments Incorporated
Product Folder Links: SN54AHCT244 SN74AHCT244
SN54AHCT244, SN74AHCT244
www.ti.com
SCLS228M – OCTOBER 1995 – REVISED JULY 2014
8 Parameter Measurement Information
From Output
Under Test
Test
Point
From Output
Under Test
RL = 1 kΩ
S1
VCC
Open
TEST
GND
CL
(see Note A)
CL
(see Note A)
S1
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Open Drain
Open
VCC
GND
VCC
LOAD CIRCUIT FOR
3-STATE AND OPEN-DRAIN OUTPUTS
LOAD CIRCUIT FOR
TOTEM-POLE OUTPUTS
3V
1.5 V
Timing Input
0V
tw
3V
1.5 V
Input
1.5 V
th
tsu
3V
1.5 V
Data Input
1.5 V
0V
0V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
VOLTAGE WAVEFORMS
PULSE DURATION
3V
1.5 V
Input
1.5 V
0V
tPLH
In-Phase
Output
tPHL
50% VCC
tPHL
Out-of-Phase
Output
VOH
50% VCC
VOL
Output
Waveform 1
S1 at VCC
(see Note B)
VOH
50% VCC
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
1.5 V
1.5 V
0V
tPLZ
tPZL
≈VCC
50% VCC
VOL + 0.3 V
VOL
tPHZ
tPZH
tPLH
50% VCC
3V
Output
Control
Output
Waveform 2
S1 at GND
(see Note B)
50% VCC
VOH – 0.3 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 ≤ 1 MHz, ZO = 50 Ω, tr ≤ 3 ns, tf ≤ 3 ns.
D. The outputs are measured one at a time with one input transition per measurement.
E. All parameters and waveforms are not applicable to all devices.
Figure 2. Load Circuit and Voltage Waveforms
Copyright © 1995–2014, Texas Instruments Incorporated
Product Folder Links: SN54AHCT244 SN74AHCT244
Submit Documentation Feedback
7
SN54AHCT244, SN74AHCT244
SCLS228M – OCTOBER 1995 – REVISED JULY 2014
www.ti.com
9 Detailed Description
9.1 Overview
The SNx4AHCT244 devices are organized as two 4-bit buffers/line drivers with separate output-enable (OE)
inputs. When OE is low, the device passes data from the A inputs to the Y outputs. When OE is high, the outputs
are in the high-impedance state. To ensure the high-impedance state during power up or power down, OE
should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the currentsinking capability of the driver.
9.2 Functional Block Diagram
1
DIR
19
OE
2
A1
18
B1
To Seven Other Channels
9.3 Feature Description
•
•
•
•
VCC is optimized at 5 V
Allows up voltage translation from 3.3 V to 5 V
– Inputs Accept VIH levels of 2 V
Slow edge rates minimize output ringing
Inputs are TTL-Voltage compatible
9.4 Device Functional Modes
Table 1. Function Table
(Each 4-Bit Buffer/Driver)
INPUTS
8
Submit Documentation Feedback
OE
A
OUTPUT
Y
L
H
H
L
L
L
H
X
Z
Copyright © 1995–2014, Texas Instruments Incorporated
Product Folder Links: SN54AHCT244 SN74AHCT244
SN54AHCT244, SN74AHCT244
www.ti.com
SCLS228M – OCTOBER 1995 – REVISED JULY 2014
10 Application and Implementation
10.1 Application Information
The SN74AHCT244 is a low-drive CMOS device that can be used for a multitude of bus interface type
applications where output ringing is a concern. The low drive and slow edge rates will minimize overshoot and
undershoot on the outputs. The input switching levels have been lowered to accommodate TTL inputs of 0.8-V
VIL and 2-V VIH. This feature makes it ideal for translating up from 3.3 V to 5 V. Figure 3 shows this type of
translation.
10.2 Typical Application
Regulated 3.3 V
5-V Regulated
OE
VCC
A1
Y1
5-V Sub-system
µC
System Logic
A4
Y4
µC
System Logic
LEDs
GND
Figure 3. Specific Application Schematic
10.2.1 Design Requirements
This device uses CMOS technology and has balanced output drive. Care should be taken to avoid bus
contention because it can drive currents that would exceed maximum limits. The high drive will also create fast
edges into light loads so routing and load conditions should be considered to prevent ringing.
10.2.2 Detailed Design Procedure
1. Recommended Input conditions
– Rise time and fall time specs. See (Δt/ΔV) in the Recommended Operating Conditions table.
– Specified high and low levels. See (VIH and VIL) in the Recommended Operating Conditions table.
– Inputs are overvoltage tolerant allowing them to go as high as 5.5 V at any valid VCC
2. Recommend output conditions
– Load currents should not exceed 25 mA on the output and 50 mA total for the part
– Outputs should not be pulled above VCC
Copyright © 1995–2014, Texas Instruments Incorporated
Product Folder Links: SN54AHCT244 SN74AHCT244
Submit Documentation Feedback
9
SN54AHCT244, SN74AHCT244
SCLS228M – OCTOBER 1995 – REVISED JULY 2014
www.ti.com
Typical Application (continued)
10.2.3 Application Curves
Output
Input
Figure 4. Application Curve
11 Power Supply Recommendations
The power supply can be any voltage between the Min and Max supply voltage rating located in the
Recommended Operating Conditions table.
Each VCC pin should have a good bypass capacitor to prevent power disturbance. For devices with a single
supply, 0.1 μF is recommended; if there are multiple VCC pins, then 0.01 μF or 0.022 μF is recommended for
each power pin. It is acceptable to parallel multiple bypass caps to reject different frequencies of noise. A 0.1 μF
and a 1 μF are commonly used in parallel. The bypass capacitor should be installed as close to the power pin as
possible for best results.
12 Layout
12.1 Layout Guidelines
When using multiple-bit logic devices, inputs should never float.
In many cases, functions or parts of functions of digital logic devices are unused, for example, when only two
inputs of a triple-input AND gate are used or only 3 of the 4 buffer gates are used. Such input pins should not be
left unconnected because the undefined voltages at the outside connections result in undefined operational
states. Figure 5 specifies the rules that must be observed under all circumstances. All unused inputs of digital
logic devices must be connected to a high or low bias to prevent them from floating. The logic level that should
be applied to any particular unused input depends on the function of the device. Generally they will be tied to
GND or VCC, whichever makes more sense or is more convenient. It is generally acceptable to float outputs,
unless the part is a transceiver. If the transceiver has an output enable pin, it will disable the output section of the
part when asserted. This will not disable the input section of the I/Os, so they cannot float when disabled.
12.2 Layout Example
Vcc
Unused Input
Input
Output
Output
Unused Input
Input
Figure 5. Layout Diagram
10
Submit Documentation Feedback
Copyright © 1995–2014, Texas Instruments Incorporated
Product Folder Links: SN54AHCT244 SN74AHCT244
SN54AHCT244, SN74AHCT244
www.ti.com
SCLS228M – OCTOBER 1995 – REVISED JULY 2014
13 Device and Documentation Support
13.1 Related Links
The table below lists quick access links. Categories include technical documents, support and community
resources, tools and software, and quick access to sample or buy.
Table 2. Related Links
PARTS
PRODUCT FOLDER
SAMPLE & BUY
TECHNICAL
DOCUMENTS
TOOLS &
SOFTWARE
SUPPORT &
COMMUNITY
SN54AHCT244
Click here
Click here
Click here
Click here
Click here
SN74AHCT244
Click here
Click here
Click here
Click here
Click here
13.2 Trademarks
All trademarks are the property of their respective owners.
13.3 Electrostatic Discharge Caution
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
13.4 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
14 Mechanical, Packaging, and Orderable Information
The following pages include mechanical, packaging, and orderable information. This information is the most
current data available for the designated devices. This data is subject to change without notice and revision of
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
Copyright © 1995–2014, Texas Instruments Incorporated
Product Folder Links: SN54AHCT244 SN74AHCT244
Submit Documentation Feedback
11
PACKAGE OPTION ADDENDUM
www.ti.com
14-Oct-2022
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)
Samples
(4/5)
(6)
5962-9678301Q2A
ACTIVE
LCCC
FK
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
59629678301Q2A
SNJ54AHCT
244FK
5962-9678301QRA
ACTIVE
CDIP
J
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
5962-9678301QR
A
SNJ54AHCT244J
5962-9678301QSA
ACTIVE
CFP
W
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
5962-9678301QS
A
SNJ54AHCT244W
SN74AHCT244DBR
ACTIVE
SSOP
DB
20
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
HB244
Samples
SN74AHCT244DGVR
ACTIVE
TVSOP
DGV
20
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
HB244
Samples
SN74AHCT244DW
ACTIVE
SOIC
DW
20
25
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
AHCT244
Samples
SN74AHCT244DWR
ACTIVE
SOIC
DW
20
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
AHCT244
Samples
SN74AHCT244N
ACTIVE
PDIP
N
20
20
RoHS &
Non-Green
NIPDAU
N / A for Pkg Type
-40 to 85
SN74AHCT244N
Samples
SN74AHCT244NSR
ACTIVE
SO
NS
20
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
AHCT244
Samples
SN74AHCT244PW
ACTIVE
TSSOP
PW
20
70
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
HB244
Samples
SN74AHCT244PWG4
ACTIVE
TSSOP
PW
20
70
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
HB244
Samples
SN74AHCT244PWR
ACTIVE
TSSOP
PW
20
2000
RoHS & Green
NIPDAU | SN
Level-1-260C-UNLIM
-40 to 85
HB244
Samples
SN74AHCT244PWRG4
ACTIVE
TSSOP
PW
20
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
HB244
Samples
SNJ54AHCT244FK
ACTIVE
LCCC
FK
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
59629678301Q2A
SNJ54AHCT
244FK
SNJ54AHCT244J
ACTIVE
CDIP
J
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
5962-9678301QR
A
SNJ54AHCT244J
Addendum-Page 1
Samples
Samples
Samples
Samples
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
Orderable Device
14-Oct-2022
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
(3)
Device Marking
Samples
(4/5)
(6)
SNJ54AHCT244W
ACTIVE
CFP
W
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
5962-9678301QS
A
SNJ54AHCT244W
(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
工商网监
湘ICP备2023018690号
