Sample &
Buy
Product
Folder
Support &
Community
Tools &
Software
Technical
Documents
SN54LS245, SN74LS245
SDLS146B – OCTOBER 1976 – REVISED SEPTEMBER 2016
SNx4LS245 Octal Bus Transceivers With 3-State Outputs
1 Features
3 Description
•
•
•
•
These octal bus transceivers are designed for
asynchronous two-way communication between data
buses. The control-function implementation minimizes
external timing requirements.
1
3-State Outputs Drive Bus Lines Directly
PNP Inputs Reduce DC Loading on Bus Lines
Hysteresis at Bus Inputs Improves Noise Margins
Typical Propagation Delay Times Port to Port,
8 ns
2 Applications
•
•
•
•
Building Automation
Electronic Point of Sale
Factory Automation and Control
Test and Measurement
The SNx4LS245 devices allow data transmission
from the A bus to the B bus or from the B bus to the
A bus, depending on the logic level at the directioncontrol (DIR) input. The output-enable (OE) input can
disable the device so that the buses are effectively
isolated.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SN54LS245J
CDIP (20)
24.20 mm × 6.92 mm
SN54LS245W
CFP (20)
7.02 mm × 13.72 mm
SN54LS245FK
LCCC (20)
8.89 mm × 8.89 mm
SN74LS245DB
SSOP (20)
7.20 mm × 5.30 mm
SN74LS245DW
SOIC (20)
12.80 mm × 7.50 mm
SN74LS245N
PDIP (20)
24.33 mm × 6.35 mm
SN74LS245NS
SO (20)
12.60 mm × 5.30 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Logic Diagram (Positive Logic)
DIR
1
19
A1
OE
2
18
B1
To Seven Other Channels
Copyright © 2016, Texas Instruments Incorporated
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.
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.
SN54LS245, SN74LS245
SDLS146B – OCTOBER 1976 – REVISED SEPTEMBER 2016
www.ti.com
Table of Contents
1
2
3
4
5
6
7
8
9
Features ..................................................................
Applications ...........................................................
Description .............................................................
Revision History.....................................................
Device Comparison Table.....................................
Pin Configuration and Functions .........................
Specifications.........................................................
1
1
1
2
3
3
4
7.1
7.2
7.3
7.4
7.5
7.6
7.7
4
4
4
4
5
5
6
Absolute Maximum Ratings ......................................
ESD Ratings..............................................................
Recommended Operating Conditions.......................
Thermal Information ..................................................
Electrical Characteristics...........................................
Switching Characteristics ..........................................
Typical Characteristics ..............................................
Parameter Measurement Information .................. 7
Detailed Description .............................................. 8
9.1 Overview ................................................................... 8
9.2 Functional Block Diagram ......................................... 8
9.3 Feature Description................................................... 8
9.4 Device Functional Modes.......................................... 8
10 Application and Implementation........................ 10
10.1 Application Information.......................................... 10
10.2 Typical Application ............................................... 10
11 Power Supply Recommendations ..................... 12
12 Layout................................................................... 12
12.1 Layout Guidelines ................................................. 12
12.2 Layout Example .................................................... 12
13 Device and Documentation Support ................. 13
13.1
13.2
13.3
13.4
13.5
13.6
Related Links ........................................................
Receiving Notification of Documentation Updates
Community Resource............................................
Trademarks ...........................................................
Electrostatic Discharge Caution ............................
Glossary ................................................................
13
13
13
13
13
13
14 Mechanical, Packaging, and Orderable
Information ........................................................... 13
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (February 2002) to Revision B
Page
•
Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section .................................................................................................. 1
•
Deleted Ordering Information table; see POA at the end of the data sheet ......................................................................... 1
•
Changed RθJA values in Thermal Information table: 70 to 91.7 for DB package, 58 to 79 for DW package, 69 to 46.1
for N package, and 60 to 74.2 for NS package ...................................................................................................................... 4
2
Submit Documentation Feedback
Copyright © 1976–2016, Texas Instruments Incorporated
Product Folder Links: SN54LS245 SN74LS245
SN54LS245, SN74LS245
www.ti.com
SDLS146B – OCTOBER 1976 – REVISED SEPTEMBER 2016
5 Device Comparison Table
TYPE
IOL
(SINK CURRENT)
IOH
(SOURCE CURRENT)
SN54LS245
12 mA
–12 mA
SN74LS245
24 mA
–15 mA
6 Pin Configuration and Functions
J, W, DB, DW, N, or NS Package
20-Pin CDIP, CFP, SSOP, SOIC, PDIP, or SO
Top View
18
B1
4
17
B2
A4
5
16
B3
A5
6
15
B4
A6
7
14
B5
A7
8
13
B6
A8
9
12
B7
10
11
B8
GND
3
2
1
OE
3
A3
DIR
VCC
A2
A3
4
20 19
18
B1
A4
5
17
B2
A5
6
16
B3
A6
7
15
B4
A7
8
14
9 10 11 12 13
B5
B8
B7
B6
OE
A1
VCC
19
A2
20
2
A8
1
A1
GND
DIR
FK Package
20-Pin LCCC
Top View
Pin Functions
PIN
NO.
NAME
I/O
DESCRIPTION
1
DIR
I
2
A1
I/O
Controls signal direction; Low = Bx to Ax, High = Ax to Bx
Channel 1, A side
3
A2
I/O
Channel 2, A side
4
A3
I/O
Channel 3, A side
5
A4
I/O
Channel 4, A side
6
A5
I/O
Channel 5, A side
7
A6
I/O
Channel 6, A side
8
A7
I/O
Channel 7, A side
9
A8
I/O
Channel 8, A side
10
GND
—
Ground
11
B8
O/I
Channel 8, B side
12
B7
O/I
Channel 7, B side
13
B6
O/I
Channel 6, B side
14
B5
O/I
Channel 5, B side
15
B4
O/I
Channel 4, B side
16
B3
O/I
Channel 3, B side
17
B2
O/I
Channel 2, B side
18
B1
O/I
Channel 1, B side
19
OE
I
20
VCC
—
Active low output enable; Low = all channels active, High = all channels disabled (high
impedance)
Power supply
Copyright © 1976–2016, Texas Instruments Incorporated
Product Folder Links: SN54LS245 SN74LS245
Submit Documentation Feedback
3
SN54LS245, SN74LS245
SDLS146B – OCTOBER 1976 – REVISED SEPTEMBER 2016
www.ti.com
7 Specifications
7.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)
MIN
VCC
Supply voltage
(1)
VI
Input voltage
TJ
Operating virtual junction temperature
Tstg
Storage temperature
(1)
–65
MAX
UNIT
7
V
7
V
150
°C
150
°C
All voltage values are with respect to GND.
7.2 ESD Ratings
VALUE
V(ESD)
(1)
(2)
Electrostatic discharge
Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1)
±2500
Charged-device model (CDM), per JEDEC specification JESD22C101 (2)
±1500
UNIT
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
VCC
Supply voltage
IOH
High-level output current
IOL
Low-level output current
TA
Operating free-air temperature
MIN
NOM
MAX
SN54LS245
4.5
5
5.5
SN74LS245
4.75
5
5.25
SN54LS245
–12
SN74LS245
–15
SN54LS245
12
SN74LS245
24
SN54LS245
–55
125
SN74LS245
0
70
UNIT
V
mA
mA
°C
7.4 Thermal Information
SNx4LS245
THERMAL METRIC (1)
J
(CDIP)
W
(CFP)
FK
(LCCC)
DB
(SSOP)
DW
(SOIC)
N
(PDIP)
NS
(SO)
20 PINS
20
PINS
20 PINS
20 PINS
20 PINS
20 PINS
20 PINS
N/A
N/A
N/A
RθJA
Junction-to-ambient thermal resistance
RθJC(top)
Junction-to-case (top) thermal
resistance
42.3
RθJB
Junction-to-board thermal resistance
56.9 (2)
ψJT
Junction-to-top characterization
parameter
ψJB
RθJC(bot)
(1)
(2)
4
UNIT
91.7
79.0
46.1
74.2
°C/W
(2)
53.1
44.4
32.1
40.4
°C/W
109.5 (2)
45.6 (2)
46.8
46.9
27.0
41.7
°C/W
N/A
N/A
N/A
18.9
18.0
17.6
16.9
°C/W
Junction-to-board characterization
parameter
N/A
N/A
N/A
46.4
46.3
26.9
41.3
°C/W
Junction-to-case (bottom) thermal
resistance
15.9 (2)
13.0 (2)
6.7 (2)
N/A
N/A
N/A
N/A
°C/W
(2)
70.1
(2)
46.7
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report.
MIL-STD-883 for Rth-JCx JEDEC JESD51 for Rth-JB (body not contact PCB)
Submit Documentation Feedback
Copyright © 1976–2016, Texas Instruments Incorporated
Product Folder Links: SN54LS245 SN74LS245
SN54LS245, SN74LS245
www.ti.com
SDLS146B – OCTOBER 1976 – REVISED SEPTEMBER 2016
7.5 Electrical Characteristics
over recommended operating free-air temperature range (unless otherwise noted)
TEST CONDITIONS (1)
PARAMETER
VIH
MIN
High-level input voltage
VIL
Low-level input voltage
VIK
Input clamp voltage
Hysteresis
(VT+ – VT–)
TYP (1)
MAX
2
VCC = MIN,
A or B
V
SN54LS245
0.7
SN74LS245
0.8
II = –18 mA
–1.5
VCC = MIN
UNIT
0.2
0.4
2.4
3.4
V
V
V
High-level output voltage
VCC = MIN,
VIL = VIL(max)
VIH = 2 V,
IOH = –3 mA
VOH
Low-level output voltage
VCC = MIN,
VIH = 2 V,
VIL = VIL(max)
IOL = 12 mA
VOL
IOZH
Off-state output current,
high-level voltage applied
VCC = MAX,
OE at 2 V
VO = 2.7 V
20
µA
IOZL
Off-state output current,
low-level voltage applied
VCC = MAX,
OE at 2 V
VO = 0.4 V
–200
µA
II
Input current at
maximum
input voltage
IIH
High-level input current
VCC = MAX,
VIH = 2.7 V
20
µA
IIL
Low-level input current
VCC = MAX,
VIL = 0.4 V
–0.2
mA
IOS
Short-circuit output current (2)
VCC = MAX
–225
mA
A or B
VCC = MAX
DIR or OE
IOH = MAX
IOL = 24 mA
0.4
SN74LS245
0.5
VI = 5.5 V
0.1
VI = 7 V
0.1
–40
Total,
outputs high
ICC
Supply current
Total,
outputs low
VCC = MAX
Outputs open
Outputs
at high Z
(1)
(2)
V
2
48
70
62
90
64
95
V
mA
mA
All typical values are at VCC = 5 V, TA = 25°C.
Not more than one output should be shorted at a time, and duration of the short circuit should not exceed one second.
7.6 Switching Characteristics
VCC = 5 V, TA = 25°C (see Figure 2)
PARAMETER
TEST CONDITIONS
tPLH
Propagation delay time, low- to high-level output
tPHL
Propagation delay time, high- to low-level output
tPZL
Output enable time to low level
tPZH
Output enable time to high level
tPLZ
Output disable time from low level
tPHZ
Output disable time from high level
CL = 45 pF, RL = 667 Ω
CL = 45 pF, RL = 667 Ω
CL = 5 pF, RL = 667 Ω
Copyright © 1976–2016, Texas Instruments Incorporated
Product Folder Links: SN54LS245 SN74LS245
MIN
TYP
MAX
8
12
8
12
27
40
25
40
15
25
15
28
Submit Documentation Feedback
UNIT
ns
ns
ns
5
SN54LS245, SN74LS245
SDLS146B – OCTOBER 1976 – REVISED SEPTEMBER 2016
www.ti.com
7.7 Typical Characteristics
VCC = 5 V, TA = 25°C, CL = 45 pF, RL = 667 Ω
5.5
4.5
Voltage (V)
3.5
2.5
1.5
0.5
Input
Output
-0.5
0
5
10
Time (ns)
15
20
D001
Figure 1. Simulated Propagation Delay From Input to Output
6
Submit Documentation Feedback
Copyright © 1976–2016, Texas Instruments Incorporated
Product Folder Links: SN54LS245 SN74LS245
SN54LS245, SN74LS245
www.ti.com
SDLS146B – OCTOBER 1976 – REVISED SEPTEMBER 2016
8 Parameter Measurement Information
VCC
Test
Point
VCC
RL
From Output
Under Test
CL
(see Note A)
CL
(see Note A)
LOAD CIRCUIT
FOR 2-STATE TOTEM-POLE OUTPUTS
High-Level
Pulse
1.3 V
5 kΩ
Test
Point
S2
LOAD CIRCUIT
FOR 3-STATE OUTPUTS
LOAD CIRCUIT
FOR OPEN-COLLECTOR OUTPUTS
3V
Timing
Input
1.3 V
S1
(see Note B)
CL
(see Note A)
RL
(see Note B)
RL
From Output
Under Test
VCC
From Output
Under Test
Test
Point
1.3 V
0V
tw
Low-Level
Pulse
1.3 V
tsu
1.3 V
In-Phase
Output
(see Note D)
3V
1.3 V
1.3 V
0V
tPZL
tPLZ
tPHL
VOH
1.3 V
1.3 V
Waveform 1
(see Notes C
and D)
VOL + 0.5 V
VOL
VOH
1.3 V
1.3 V
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
tPHZ
tPZH
tPLH
≈1.5 V
1.3 V
VOL
tPHL
Out-of-Phase
Output
(see Note D)
1.3 V
0V
Output
Control
(low-level
enabling)
0V
tPLH
1.3 V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
3V
1.3 V
3V
Data
Input
1.3 V
VOLTAGE WAVEFORMS
PULSE DURATIONS
Input
th
Waveform 2
(see Notes C
and D)
VOH
1.3 V
VOH – 0.5 V
≈1.5 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS
NOTES: A. CL includes probe and jig capacitance.
B. All diodes are 1N3064 or equivalent.
C. 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.
D. S1 and S2 are closed for tPLH, tPHL, tPHZ, and tPLZ; S1 is open and S2 is closed for tPZH; S1 is closed and S2 is open for tPZL.
E. Phase relationships between inputs and outputs have been chosen arbitrarily for these examples.
F. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO ≈ 50 Ω, tr ≤ 1.5 ns, tf ≤ 2.6 ns.
G. The outputs are measured one at a time with one input transition per measurement.
Figure 2. Load Circuits and Voltage Waveforms
Copyright © 1976–2016, Texas Instruments Incorporated
Product Folder Links: SN54LS245 SN74LS245
Submit Documentation Feedback
7
SN54LS245, SN74LS245
SDLS146B – OCTOBER 1976 – REVISED SEPTEMBER 2016
www.ti.com
9 Detailed Description
9.1 Overview
The SNx4LS245 uses Schottky transistor logic to perform the standard '245 transceiver function. This standard
logic function has a common pinout, direction select pin, and active-low output enable. When the outputs are
disabled, the A and B sides of the device are effectively isolated.
9.2 Functional Block Diagram
DIR
1
19
A1
OE
2
18
B1
To Seven Other Channels
Copyright © 2016, Texas Instruments Incorporated
Figure 3. Logic Diagram (Positive Logic)
9.3 Feature Description
9.3.1 3-State outputs
The 3-state outputs can drive bus lines directly. All outputs can be put into high impedance mode through the OE
pin.
9.3.2 PNP Inputs
This device has PNP inputs which reduce dc loading on bus lines.
9.3.3 Hysteresis on Bus Inputs
The bus inputs have built-in hysteresis that improves noise margins.
9.4 Device Functional Modes
The SNx4LS245 performs the standard '245 logic function. Data can be transmitted from A to B or from B to A
depending on the DIR pin value, or the A and B sides can be isolated from one another by setting the OE pin
HIGH.
8
Submit Documentation Feedback
Copyright © 1976–2016, Texas Instruments Incorporated
Product Folder Links: SN54LS245 SN74LS245
SN54LS245, SN74LS245
www.ti.com
SDLS146B – OCTOBER 1976 – REVISED SEPTEMBER 2016
Table 1. Function Table
INPUTS
OE
EQUIVALENT OF EACH INPUT
DIR
OPERATION
L
L
B data to A bus
L
H
A data to B bus
H
X
Isolation
TYPICAL OF ALL OUTPUTS
VCC
VCC
50 Ω NOM
9 kΩ NOM
Input
Output
Figure 4. Schematics of Inputs and Outputs
Copyright © 1976–2016, Texas Instruments Incorporated
Product Folder Links: SN54LS245 SN74LS245
Submit Documentation Feedback
9
SN54LS245, SN74LS245
SDLS146B – OCTOBER 1976 – REVISED SEPTEMBER 2016
www.ti.com
10 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
10.1 Application Information
The SNx4LS245 is commonly used to drive ribbon cables or back plane busses. It allows isolation from the bus
when necessary, and increases drive strength on the bus.
10.2 Typical Application
Figure 5 shows the SNx4LS245 wired up as a permanently enabled data bus transceiver for both a master and
slave device communicating over a ribbon cable or back plane.
Master Device
Low Drive Strength
(MCU, FPGA, CPU)
SNx4LS245
SNx4LS245
OE
DIR
A1
B1
A1
B1
A2
B2
A2
B2
A3
B3
Ribbon Cable
A3
B3
A4
B4
or
A4
B4
A5
B5
Back Plane
A5
B5
A6
B6
A6
B6
A7
B7
A7
B7
A8
B8
A8
B8
DIR
OE
Slave Device
Copyright © 2016, Texas Instruments Incorporated
Figure 5. SNx4LS245 Being Used to Communicate Over a Ribbon Cable or Back Plane
10.2.1 Design Requirements
This device uses Schottky transistor logic technology. Take care to avoid bus contention because it can drive
currents that would exceed maximum limits. The high drive creates fast edges into light loads, so routing and
load conditions must be considered to prevent ringing.
10.2.2 Detailed Design Procedure
• Power Supply
– Each device must maintain a supply voltage between 4.5 V and 5.5 V
• Inputs
– Input signals must meet the VIH and VIL specifications in Electrical Characteristics
– Inputs leakage values (II, IIH, IIL) from Electrical Characteristics must be considered
• Outputs
– Output signals are specified to meet the VOH and VOL specifications in Electrical Characteristics as a
minimum (the values could be closer to VCC for high signals or GND for low signals)
– TI recommends maintaining output currents as specified in Recommended Operating Conditions
– The part can be damaged by sourcing or sinking too much current. See Electrical Characteristics for
details.
10
Submit Documentation Feedback
Copyright © 1976–2016, Texas Instruments Incorporated
Product Folder Links: SN54LS245 SN74LS245
SN54LS245, SN74LS245
www.ti.com
SDLS146B – OCTOBER 1976 – REVISED SEPTEMBER 2016
Typical Application (continued)
10.2.3 Application Curve
It is common to see significant losses in ribbon cables and back planes. Figure 6 shows a simplified simulation of
a ribbon cable from a 5-V, 10-MHz low-drive strength source. It shows the difference between an input signal
from a weak driver like an MCU or FPGA compared to a strong driver like the SN74LS245 when measured at the
distant end of the cable. By adding a high-current drive transceiver before the cable, the signal strength can be
significantly improved, and subsequently the cable can be longer.
5.5
Unbuffered
SN74LS245
4.5
Voltage (V)
3.5
2.5
1.5
0.5
-0.5
0
100
200
300
Time (ns)
400
500
D001
Unbuffered line is directly connected to low current source, SN74LS245 line is buffered through the
transceiver. Both signals are measured at the distant end of the ribbon cable. Input signal is not shown.
Figure 6. Simulated Outputs From Ribbon Cable With a 5-V, 10-MHz Source
Copyright © 1976–2016, Texas Instruments Incorporated
Product Folder Links: SN54LS245 SN74LS245
Submit Documentation Feedback
11
SN54LS245, SN74LS245
SDLS146B – OCTOBER 1976 – REVISED SEPTEMBER 2016
www.ti.com
11 Power Supply Recommendations
The power supply can be any voltage between the minimum and maximum supply voltage rating located in
Recommended Operating Conditions. Each VCC pin must have a good bypass capacitor to prevent power
disturbance. For devices with a single supply, TI recommends a 0.1-µF bypass capacitor. If there are multiple
VCC pins, TI recommends a 0.01-µF or 0.022-µF bypass capacitors for each power pin. It is acceptable to parallel
multiple bypass capacitors to reject different frequencies of noise. Two bypass capacitors of value 0.1 µF and 1
µF are commonly used in parallel. For best results, install the bypass capacitor(s) as close to the power pin as
possible.
12 Layout
12.1 Layout Guidelines
When using multiple bit logic devices, inputs must not be left floating. In many applications, some channels of the
SNx4LS245 are unused, and thus must be terminated properly. Because each transceiver channel pin can be
either an input or an output, they must be treated as both when being terminated. Ground or VCC (whichever is
more convenient) can be used to terminate unused inputs; however, each unused channel should be terminated
to the same logic level on both the A and B side. For example, in Figure 7 unused channels 4, 5, 6, and 7 are
terminated correctly with both sides connected to the same voltage, while channel 8 is terminated incorrectly with
each side being tied to a different voltage. The OE input is also unused in this example, and is terminated
directly to ground to permanently enable all outputs.
12.2 Layout Example
DIR
Device 1
SNx4LS245
OE
A1
B1
A2
B2
A3
B3
A4
B4
A5
B5
A6
B6
A7
B7
A8
B8
GND
Correctly Terminated
Device 2
VCC
Incorrectly Terminated
Figure 7. Example Demonstrating How to Terminate Unused Inputs and Channels of a Transceiver
12
Submit Documentation Feedback
Copyright © 1976–2016, Texas Instruments Incorporated
Product Folder Links: SN54LS245 SN74LS245
SN54LS245, SN74LS245
www.ti.com
SDLS146B – OCTOBER 1976 – REVISED SEPTEMBER 2016
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
SN54LS245
Click here
Click here
Click here
Click here
Click here
SN74LS245
Click here
Click here
Click here
Click here
Click here
13.2 Receiving Notification of Documentation Updates
To receive notification of documentation updates, navigate to the device product folder on ti.com. In the upper
right corner, click on Alert me to register and receive a weekly digest of any product information that has
changed. For change details, review the revision history included in any revised document.
13.3 Community Resource
The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective
contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of
Use.
TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration
among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help
solve problems with fellow engineers.
Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and
contact information for technical support.
13.4 Trademarks
E2E is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
13.5 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.
13.6 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 © 1976–2016, Texas Instruments Incorporated
Product Folder Links: SN54LS245 SN74LS245
Submit Documentation Feedback
13
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)
5962-8002101VSA
ACTIVE
CFP
W
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
5962-8002101VS
A
SNV54LS245W
80021012A
ACTIVE
LCCC
FK
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
80021012A
SNJ54LS
245FK
8002101SA
ACTIVE
CFP
W
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
8002101SA
SNJ54LS245W
Samples
JM38510/32803B2A
ACTIVE
LCCC
FK
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
JM38510/
32803B2A
Samples
JM38510/32803BRA
ACTIVE
CDIP
J
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
JM38510/
32803BRA
Samples
JM38510/32803BSA
ACTIVE
CFP
W
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
JM38510/
32803BSA
Samples
M38510/32803B2A
ACTIVE
LCCC
FK
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
JM38510/
32803B2A
Samples
M38510/32803BRA
ACTIVE
CDIP
J
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
JM38510/
32803BRA
Samples
M38510/32803BSA
ACTIVE
CFP
W
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
JM38510/
32803BSA
Samples
SN54LS245J
ACTIVE
CDIP
J
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
SN54LS245J
Samples
SN74LS245DBR
ACTIVE
SSOP
DB
20
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
0 to 70
LS245
Samples
SN74LS245DW
ACTIVE
SOIC
DW
20
25
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
0 to 70
LS245
Samples
SN74LS245DWR
ACTIVE
SOIC
DW
20
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
0 to 70
LS245
Samples
SN74LS245N
ACTIVE
PDIP
N
20
20
RoHS & Green
NIPDAU
N / A for Pkg Type
0 to 70
SN74LS245N
Samples
SN74LS245NE4
ACTIVE
PDIP
N
20
20
RoHS & Green
NIPDAU
N / A for Pkg Type
0 to 70
SN74LS245N
Samples
SN74LS245NSR
ACTIVE
SO
NS
20
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
0 to 70
74LS245
Samples
SNJ54LS245FK
ACTIVE
LCCC
FK
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
80021012A
SNJ54LS
Samples
Addendum-Page 1
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)
Device Marking
(3)
Samples
(4/5)
(6)
245FK
SNJ54LS245J
ACTIVE
CDIP
J
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
SNJ54LS245J
Samples
SNJ54LS245W
ACTIVE
CFP
W
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
8002101SA
SNJ54LS245W
Samples
(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