SN54AC244-SP [TI]

具有三态输出的航天类 8 通道、2V 至 6V 缓冲器;
SN54AC244-SP
型号: SN54AC244-SP
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

具有三态输出的航天类 8 通道、2V 至 6V 缓冲器

文件: 总22页 (文件大小:1186K)
中文:  中文翻译
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SN54AC244, SN74AC244  
OCTAL BUFFERS/DRIVERS  
WITH 3-STATE OUTPUTS  
SCAS514E − JUNE 1995 − REVISED OCTOBER 2003  
SN54AC244 . . . J OR W PACKAGE  
SN74AC244 . . . DB, DW, N, NS, OR PW PACKAGE  
(TOP VIEW)  
D
D
D
2-V to 6-V V Operation  
CC  
Inputs Accept Voltages to 6 V  
Max t of 7.5 ns at 5 V  
pd  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
1OE  
1A1  
2Y4  
1A2  
2Y3  
1A3  
2Y2  
1A4  
2Y1  
GND  
VCC  
2OE  
1Y1  
2A4  
1Y2  
2A3  
1Y3  
2A2  
1Y4  
2A1  
description/ordering information  
These octal buffers and line drivers are designed  
specifically to improve the performance and  
density of 3-state memory address drivers, clock  
drivers, and bus-oriented receivers and  
transmitters.  
The ’AC244 devices are organized as two 4-bit  
buffers/drivers with separate output-enable (OE)  
inputs. When OE is low, the device passes  
noninverted data from the A inputs to the Y  
outputs. When OE is high, the outputs are in the  
high-impedance state.  
SN54AC244 . . . FK PACKAGE  
(TOP VIEW)  
To ensure the high-impedance state during power  
up or power down, OE should be tied to V  
CC  
through a pullup resistor; the minimum value of  
the resistor is determined by the current-sinking  
capability of the driver.  
3
2
1
20 19  
18  
1Y1  
2A4  
1Y2  
1A2  
2Y3  
1A3  
2Y2  
1A4  
4
5
6
7
8
17  
16  
15 2A3  
14  
1Y3  
9 10 11 12 13  
ORDERING INFORMATION  
ORDERABLE  
PART NUMBER  
TOP-SIDE  
MARKING  
T
A
PACKAGE  
PDIP − N  
Tube  
SN74AC244N  
SN74AC244N  
Tube  
SN74AC244DW  
SN74AC244DWR  
SN74AC244NSR  
SN74AC244DBR  
SN74AC244PW  
SN74AC244PWR  
SNJ54AC244J  
SOIC − DW  
AC244  
Tape and reel  
Tape and reel  
Tape and reel  
Tube  
SOP − NS  
AC244  
AC244  
−40°C to 85°C  
SSOP − DB  
TSSOP − PW  
AC244  
Tape and reel  
Tube  
CDIP − J  
CFP − W  
LCCC − FK  
SNJ54AC244J  
Tube  
SNJ54AC244W  
SNJ54AC244FK  
SNJ54AC244W  
SNJ54AC244FK  
−55°C to 125°C  
Tube  
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are  
available at www.ti.com/sc/package.  
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.  
Copyright © 2003, Texas Instruments Incorporated  
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.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54AC244, SN74AC244  
OCTAL BUFFERS/DRIVERS  
WITH 3-STATE OUTPUTS  
SCAS514E − JUNE 1995 − REVISED OCTOBER 2003  
FUNCTION TABLE  
(each buffer)  
INPUTS  
OUTPUT  
Y
OE  
A
H
L
L
L
H
L
H
X
Z
logic diagram (positive logic)  
1
19  
1OE  
2OE  
18  
16  
9
7
2
11  
13  
15  
17  
1Y1  
1Y2  
1A1  
2Y1  
2Y2  
2A1  
2A2  
4
1A2  
14  
12  
6
5
3
1Y3  
1Y4  
2Y3  
2Y4  
1A3  
2A3  
2A4  
8
1A4  
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†  
Supply voltage range, V  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V  
CC  
Input voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to V + 0.5 V  
I
CC  
Output voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to V + 0.5 V  
O
CC  
Input clamp current, I (V < 0 or V > V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA  
IK  
I
I
CC  
Output clamp current, I (V < 0 or V > V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA  
OK  
O
O
CC  
Continuous output current, I (V = 0 to V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA  
O
O
CC  
Continuous current through V or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mA  
CC  
Package thermal impedance, θ (see Note 2): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70°C/W  
JA  
DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W  
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69°C/W  
NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60°C/W  
PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83°C/W  
Storage temperature range, T  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C  
stg  
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.  
NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.  
2. The package thermal impedance is calculated in accordance with JESD 51-7.  
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54AC244, SN74AC244  
OCTAL BUFFERS/DRIVERS  
WITH 3-STATE OUTPUTS  
SCAS514E − JUNE 1995 − REVISED OCTOBER 2003  
recommended operating conditions (see Note 3)  
SN54AC244  
SN74AC244  
UNIT  
MIN  
2
MAX  
MIN  
2
MAX  
V
V
Supply voltage  
6
6
V
CC  
V
CC  
V
CC  
V
CC  
V
CC  
V
CC  
V
CC  
= 3 V  
2.1  
2.1  
= 4.5 V  
= 5.5 V  
= 3 V  
3.15  
3.85  
3.15  
3.85  
High-level input voltage  
V
V
IH  
0.9  
1.35  
1.65  
0.9  
1.35  
1.65  
= 4.5 V  
= 5.5 V  
V
IL  
Low-level input voltage  
V
V
Input voltage  
0
0
V
CC  
V
CC  
0
0
V
CC  
V
CC  
V
V
I
Output voltage  
O
V
CC  
V
CC  
V
CC  
V
CC  
V
CC  
V
CC  
= 3 V  
−12  
−24  
−24  
12  
−12  
−24  
−24  
12  
= 4.5 V  
= 5.5 V  
= 3 V  
I
High-level output current  
Low-level output current  
mA  
mA  
OH  
= 4.5 V  
= 5.5 V  
24  
24  
I
OL  
24  
24  
Δt/Δv  
Input transition rise or fall rate  
Operating free-air temperature  
8
8
ns/V  
T
A
−55  
125  
−40  
85  
°C  
NOTE 3: All unused inputs of the device must be held at V or GND to ensure proper device operation. Refer to the TI application report,  
CC  
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.  
3
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54AC244, SN74AC244  
OCTAL BUFFERS/DRIVERS  
WITH 3-STATE OUTPUTS  
SCAS514E − JUNE 1995 − REVISED OCTOBER 2003  
electrical characteristics over recommended operating free-air temperature range (unless  
otherwise noted)  
T
A
= 25°C  
SN54AC244  
SN74AC244  
PARAMETER  
TEST CONDITIONS  
V
UNIT  
CC  
MIN  
2.9  
TYP  
MAX  
MIN  
2.9  
4.4  
5.4  
2.4  
3.7  
4.7  
3.85  
MAX  
MIN  
2.9  
MAX  
3 V  
4.5 V  
5.5 V  
3 V  
4.4  
4.4  
I
= −50 μA  
OH  
5.4  
5.4  
I
I
= −12 mA  
= −24 mA  
2.56  
3.86  
4.86  
2.46  
3.76  
4.76  
OH  
V
V
OH  
4.5 V  
5.5 V  
5.5 V  
5.5 V  
3 V  
OH  
I
I
= −50 mA  
= −75 mA  
OH  
3.85  
OH  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
4.5 V  
5.5 V  
3 V  
I
OL  
= 50 μA  
0.1  
0.1  
0.1  
I
I
= 12 mA  
= 24 mA  
0.36  
0.36  
0.36  
0.5  
0.44  
0.44  
0.44  
OL  
V
V
OL  
4.5 V  
5.5 V  
5.5 V  
5.5 V  
0.5  
OL  
0.5  
I
I
= 50 mA  
1.65  
OL  
= 75 mA  
1.65  
1
OL  
Data inputs  
V = V or GND  
0.1  
0.1  
1
1
I
CC  
I
I
5.5 V  
5.5 V  
μA  
μA  
Control inputs V = V or GND  
1
I
CC  
V
V
= V or GND,  
CC  
O
I
0.25  
4
5
2.5  
40  
OZ  
= V or V  
I(OE)  
IL  
IH  
I
V = V or GND,  
I = 0  
O
5.5 V  
5 V  
80  
μA  
CC  
I
CC  
C
V = V or GND  
2.5  
pF  
i
I
CC  
Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.  
switching characteristics over recommended operating free-air temperature range,  
VCC = 3.3 V 0.3 V (unless otherwise noted) (see Figure 1)  
T
A
= 25°C  
TYP  
6.5  
6.5  
6
SN54AC244  
SN74AC244  
FROM  
(INPUT)  
TO  
(OUTPUT)  
PARAMETER  
UNIT  
ns  
MIN  
2
MAX  
9
MIN  
1
MAX  
12.5  
12  
MIN  
1.5  
2
MAX  
10  
t
t
t
t
t
t
PLH  
PHL  
PZH  
PZL  
PHZ  
PLZ  
A
Y
Y
Y
2
9
1
10  
2
10.5  
10  
1
11.5  
13  
1.5  
2
11  
ns  
OE  
OE  
2.5  
3
7.5  
7
1
11  
10  
1
12.5  
13  
1.5  
2.5  
10.5  
11.5  
ns  
2.5  
7.5  
10.5  
1
4
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54AC244, SN74AC244  
OCTAL BUFFERS/DRIVERS  
WITH 3-STATE OUTPUTS  
SCAS514E − JUNE 1995 − REVISED OCTOBER 2003  
switching characteristics over recommended operating free-air temperature range,  
VCC = 5 V 0.5 V (unless otherwise noted) (see Figure 1)  
T
A
= 25°C  
TYP  
5
SN54AC244  
SN74AC244  
FROM  
(INPUT)  
TO  
(OUTPUT)  
PARAMETER  
UNIT  
ns  
MIN  
1.5  
1.5  
1.5  
1.5  
2.5  
2
MAX  
MIN  
1
MAX  
9.5  
9
MIN  
1
MAX  
7.5  
7.5  
8
t
t
t
t
t
t
7
7
7
8
9
9
PLH  
PHL  
PZH  
PZL  
PHZ  
PLZ  
A
Y
Y
Y
5
1
1
5
1
9
1.5  
1.5  
1
ns  
OE  
OE  
5.5  
6.5  
6.5  
1
10.5  
10.5  
11  
8.5  
9.5  
9.5  
1
ns  
1
2
operating characteristics, VCC = 5 V, TA = 25°C  
PARAMETER  
TEST CONDITIONS  
TYP  
UNIT  
C
Power dissipation capacitance per buffer/driver  
C = 50 pF,  
L
f = 1 MHz  
45  
pF  
pd  
PARAMETER MEASUREMENT INFORMATION  
2 × V  
CC  
TEST  
/t  
S1  
S1  
Open  
500 Ω  
t
t
Open  
PLH PHL  
t
From Output  
Under Test  
/t  
2 × V  
PLZ PZL  
CC  
/t  
Open  
PHZ PZH  
C = 50 pF  
(see Note A)  
L
500 Ω  
Output  
Control  
(low-level  
enabling)  
V
LOAD CIRCUIT  
CC  
50% V  
50% V  
CC  
CC  
0 V  
t
t
PLZ  
PZL  
V
CC  
Input  
Output  
V  
CC  
50% V  
50% V  
CC  
CC  
Waveform 1  
50% V  
CC  
0 V  
V
V
+ 0.3 V  
− 0.3 V  
OL  
S1 at 2 × V  
CC  
V
OL  
t
PLH  
(see Note B)  
t
PHL  
t
t
PHZ  
PZH  
Output  
Waveform 2  
S1 at Open  
(see Note B)  
V
OH  
V
OH  
OH  
50% V  
50% V  
Output  
50% V  
CC  
CC  
CC  
V
OL  
0 V  
VOLTAGE WAVEFORMS  
NOTES: A. C includes probe and jig capacitance.  
VOLTAGE WAVEFORMS  
L
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, Z = 50 Ω, t 2.5 ns, t 2.5 ns.  
O
r
f
D. The outputs are measured one at a time with one input transition per measurement.  
Figure 1. Load Circuit and Voltage Waveforms  
5
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
PACKAGE OPTION ADDENDUM  
www.ti.com  
11-Apr-2013  
PACKAGING INFORMATION  
Orderable Device  
Status Package Type Package Pins Package  
Eco Plan Lead/Ball Finish  
MSL Peak Temp  
Op Temp (°C)  
Top-Side Markings  
Samples  
Drawing  
Qty  
(1)  
(2)  
(3)  
(4)  
5962-87552012A  
ACTIVE  
LCCC  
FK  
20  
1
TBD  
Call TI  
Call TI  
-55 to 125  
5962-  
87552012A  
SNJ54AC  
244FK  
5962-8755201RA  
5962-8755201SA  
5962-8755201VRA  
ACTIVE  
ACTIVE  
ACTIVE  
CDIP  
CFP  
J
W
J
20  
20  
20  
1
1
TBD  
TBD  
TBD  
Call TI  
Call TI  
A42  
Call TI  
Call TI  
-55 to 125  
-55 to 125  
-55 to 125  
5962-8755201RA  
SNJ54AC244J  
5962-8755201SA  
SNJ54AC244W  
CDIP  
20  
N / A for Pkg Type  
5962-8755201VR  
A
SNV54AC244J  
5962-8755201VSA  
ACTIVE  
CFP  
W
20  
1
TBD  
TBD  
Call TI  
N / A for Pkg Type  
-55 to 125  
5962-8755201VS  
A
SNV54AC244W  
SN74AC244DBLE  
SN74AC244DBR  
OBSOLETE  
ACTIVE  
SSOP  
SSOP  
DB  
DB  
20  
20  
Call TI  
Call TI  
-40 to 85  
-40 to 85  
2000  
2000  
2000  
25  
Green (RoHS  
& no Sb/Br)  
CU NIPDAU  
Level-1-260C-UNLIM  
AC244  
SN74AC244DBRE4  
SN74AC244DBRG4  
SN74AC244DW  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
SSOP  
SSOP  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
PDIP  
DB  
DB  
DW  
DW  
DW  
DW  
DW  
DW  
N
20  
20  
20  
20  
20  
20  
20  
20  
20  
Green (RoHS  
& no Sb/Br)  
CU NIPDAU  
CU NIPDAU  
CU NIPDAU  
CU NIPDAU  
CU NIPDAU  
CU NIPDAU  
CU NIPDAU  
CU NIPDAU  
CU NIPDAU  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
N / A for Pkg Type  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
AC244  
Green (RoHS  
& no Sb/Br)  
AC244  
Green (RoHS  
& no Sb/Br)  
AC244  
SN74AC244DWE4  
SN74AC244DWG4  
SN74AC244DWR  
SN74AC244DWRE4  
SN74AC244DWRG4  
SN74AC244N  
25  
Green (RoHS  
& no Sb/Br)  
AC244  
25  
Green (RoHS  
& no Sb/Br)  
AC244  
2000  
2000  
2000  
20  
Green (RoHS  
& no Sb/Br)  
AC244  
Green (RoHS  
& no Sb/Br)  
AC244  
Green (RoHS  
& no Sb/Br)  
AC244  
Pb-Free  
(RoHS)  
SN74AC244N  
Addendum-Page 1  
PACKAGE OPTION ADDENDUM  
www.ti.com  
11-Apr-2013  
Orderable Device  
Status Package Type Package Pins Package  
Eco Plan Lead/Ball Finish  
MSL Peak Temp  
Op Temp (°C)  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
Top-Side Markings  
Samples  
Drawing  
Qty  
(1)  
(2)  
(3)  
(4)  
SN74AC244NE4  
SN74AC244NSR  
SN74AC244NSRE4  
SN74AC244NSRG4  
SN74AC244PW  
ACTIVE  
PDIP  
SO  
N
20  
20  
20  
20  
20  
20  
20  
20  
Pb-Free  
(RoHS)  
CU NIPDAU  
CU NIPDAU  
CU NIPDAU  
CU NIPDAU  
CU NIPDAU  
CU NIPDAU  
CU NIPDAU  
N / A for Pkg Type  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
SN74AC244N  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
NS  
NS  
NS  
PW  
PW  
PW  
2000  
2000  
2000  
70  
Green (RoHS  
& no Sb/Br)  
AC244  
AC244  
AC244  
AC244  
AC244  
AC244  
SO  
Green (RoHS  
& no Sb/Br)  
SO  
Green (RoHS  
& no Sb/Br)  
TSSOP  
TSSOP  
TSSOP  
Green (RoHS  
& no Sb/Br)  
SN74AC244PWE4  
SN74AC244PWG4  
70  
Green (RoHS  
& no Sb/Br)  
70  
Green (RoHS  
& no Sb/Br)  
SN74AC244PWLE  
SN74AC244PWR  
OBSOLETE  
ACTIVE  
TSSOP  
TSSOP  
PW  
PW  
20  
20  
TBD  
Call TI  
Call TI  
-40 to 85  
-40 to 85  
2000  
2000  
2000  
1
Green (RoHS  
& no Sb/Br)  
CU NIPDAU  
Level-1-260C-UNLIM  
AC244  
AC244  
AC244  
SN74AC244PWRE4  
SN74AC244PWRG4  
SNJ54AC244FK  
ACTIVE  
ACTIVE  
ACTIVE  
TSSOP  
TSSOP  
LCCC  
PW  
PW  
FK  
20  
20  
20  
Green (RoHS  
& no Sb/Br)  
CU NIPDAU  
CU NIPDAU  
POST-PLATE  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
N / A for Pkg Type  
-40 to 85  
-40 to 85  
-55 to 125  
Green (RoHS  
& no Sb/Br)  
TBD  
5962-  
87552012A  
SNJ54AC  
244FK  
SNJ54AC244J  
SNJ54AC244W  
ACTIVE  
ACTIVE  
CDIP  
CFP  
J
20  
20  
1
1
TBD  
TBD  
A42  
N / A for Pkg Type  
N / A for Pkg Type  
-55 to 125  
-55 to 125  
5962-8755201RA  
SNJ54AC244J  
W
Call TI  
5962-8755201SA  
SNJ54AC244W  
(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.  
Addendum-Page 2  
PACKAGE OPTION ADDENDUM  
www.ti.com  
11-Apr-2013  
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability  
information and additional product content details.  
TBD: The Pb-Free/Green conversion plan has not been defined.  
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that  
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.  
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between  
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.  
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight  
in homogeneous material)  
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.  
(4)  
Multiple Top-Side Markings will be inside parentheses. Only one Top-Side Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a  
continuation of the previous line and the two combined represent the entire Top-Side Marking for that device.  
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information  
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and  
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.  
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.  
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.  
OTHER QUALIFIED VERSIONS OF SN54AC244, SN54AC244-SP, SN74AC244 :  
Catalog: SN74AC244, SN54AC244  
Enhanced Product: SN74AC244-EP, SN74AC244-EP  
Military: SN54AC244  
Space: SN54AC244-SP  
NOTE: Qualified Version Definitions:  
Catalog - TI's standard catalog product  
Enhanced Product - Supports Defense, Aerospace and Medical Applications  
Military - QML certified for Military and Defense Applications  
Addendum-Page 3  
PACKAGE OPTION ADDENDUM  
www.ti.com  
11-Apr-2013  
Space - Radiation tolerant, ceramic packaging and qualified for use in Space-based application  
Addendum-Page 4  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
26-Jan-2013  
TAPE AND REEL INFORMATION  
*All dimensions are nominal  
Device  
Package Package Pins  
Type Drawing  
SPQ  
Reel  
Reel  
A0  
B0  
K0  
P1  
W
Pin1  
Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant  
(mm) W1 (mm)  
SN74AC244DBR  
SN74AC244DWR  
SN74AC244NSR  
SN74AC244PWR  
SSOP  
SOIC  
SO  
DB  
DW  
NS  
20  
20  
20  
20  
2000  
2000  
2000  
2000  
330.0  
330.0  
330.0  
330.0  
16.4  
24.4  
24.4  
16.4  
8.2  
10.8  
8.2  
7.5  
13.0  
13.0  
7.1  
2.5  
2.7  
2.5  
1.6  
12.0  
12.0  
12.0  
8.0  
16.0  
24.0  
24.0  
16.0  
Q1  
Q1  
Q1  
Q1  
TSSOP  
PW  
6.95  
Pack Materials-Page 1  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
26-Jan-2013  
*All dimensions are nominal  
Device  
Package Type Package Drawing Pins  
SPQ  
Length (mm) Width (mm) Height (mm)  
SN74AC244DBR  
SN74AC244DWR  
SN74AC244NSR  
SN74AC244PWR  
SSOP  
SOIC  
SO  
DB  
DW  
NS  
20  
20  
20  
20  
2000  
2000  
2000  
2000  
367.0  
367.0  
367.0  
367.0  
367.0  
367.0  
367.0  
367.0  
38.0  
45.0  
45.0  
38.0  
TSSOP  
PW  
Pack Materials-Page 2  
MECHANICAL DATA  
MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001  
DB (R-PDSO-G**)  
PLASTIC SMALL-OUTLINE  
28 PINS SHOWN  
0,38  
0,22  
0,65  
28  
M
0,15  
15  
0,25  
0,09  
5,60  
5,00  
8,20  
7,40  
Gage Plane  
1
14  
0,25  
A
0°ā8°  
0,95  
0,55  
Seating Plane  
0,10  
2,00 MAX  
0,05 MIN  
PINS **  
14  
16  
20  
24  
28  
30  
38  
DIM  
6,50  
5,90  
6,50  
5,90  
7,50  
8,50  
7,90  
10,50  
9,90  
10,50 12,90  
A MAX  
A MIN  
6,90  
9,90  
12,30  
4040065 /E 12/01  
NOTES: A. All linear dimensions are in millimeters.  
B. This drawing is subject to change without notice.  
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.  
D. Falls within JEDEC MO-150  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
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TI warrants performance of its components to the specifications applicable at the time of sale, in accordance with the warranty in TI’s terms  
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