5962-9755901QSA [TI]
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS; 八路缓冲器并用3态输出线路驱动器
| 型号： | 5962-9755901QSA |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS |
| 文件： | 总9页 (文件大小：135K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN54ALS244C, SN54AS244A, SN74ALS244C, SN74AS244A
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SDAS142C – JULY 1987 – REVISED AUGUST 1995
SN54ALS244C, SN54AS244A . . . J PACKAGE
SN74ALS244C, SN74AS244A . . . DW OR N PACKAGE
(TOP VIEW)
• 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
• pnp Inputs Reduce dc Loading
• Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), and Standard Plastic (N)
and Ceramic (J) 300-mil DIPs
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
V
CC
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
2OE
1Y1
2A4
1Y2
2A3
1Y3
description
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. With the ′ALS240A, ′ALS241C,
′AS240A,and′AS241A, thesedevicesprovidethe
choice of selected combinations of inverting
outputs, symmetrical active-low output-enable
(OE) inputs, and complementary OE and OE
inputs.
13 2A2
12 1Y4
11
2A1
SN54ALS244C, SN54AS244A . . . FK PACKAGE
(TOP VIEW)
3
2
1
20 19
18
1Y1
2A4
1Y2
2A3
1Y3
1A2
2Y3
1A3
2Y2
1A4
4
5
6
7
8
The -1 version of SN74ALS244C is identical to the
standard version, except that the recommended
17
16
15
14
maximum I for the -1 version is 48 mA. There is
OL
no -1 version of the SN54ALS244C.
9 10 11 12 13
The SN54ALS244C and SN54AS244A are
characterized for operation over the full military
temperature range of –55°C to 125°C. The
SN74ALS244C
and
SN74AS244A
are
characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each buffer)
INPUTS
OUTPUT
Y
OE
A
H
L
L
L
H
L
H
X
Z
Copyright 1995, Texas Instruments Incorporated
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
SN54ALS244C, SN54AS244A, SN74ALS244C, SN74AS244A
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SDAS142C – JULY 1987 – REVISED AUGUST 1995
†
logic symbol
logic diagram (positive logic)
1
1OE
1
1OE
EN
18
16
2
18
16
14
12
2
4
6
1Y1
1Y2
1A1
1A2
1A3
1A1
4
1Y1
1Y2
1Y3
1Y4
1A2
6
1A3
8
1A4
14
12
1Y3
1Y4
19
EN
2OE
8
1A4
2OE
11
2A1
13
9
7
5
3
2Y1
2Y2
2Y3
2Y4
2A2
15
19
2A3
17
2A4
9
7
11
13
15
17
2Y1
2Y2
2A1
2A2
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
5
3
2Y3
2Y4
2A3
2A4
‡
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
CC
Input voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
I
Voltage applied to a disabled 3-state output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Operating free-air temperature range, T : SN54ALS244C . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 125°C
A
SN74ALS244C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°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.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS244C, SN54AS244A, SN74ALS244C, SN74AS244A
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SDAS142C – JULY 1987 – REVISED AUGUST 1995
recommended operating conditions
SN54ALS244C
MIN NOM MAX
5.5
SN74ALS244C
MIN NOM MAX
UNIT
V
V
Supply voltage
4.5
2
5
4.5
2
5
5.5
V
V
CC
High-level input voltage
IH
†
‡
0.8
0.8
V
IL
Low-level input voltage
V
0.7
I
I
High-level output current
Low-level output current
Operating free-air temperature
–12
12
–15
24
mA
mA
°C
OH
OL
§
48
70
T
–55
125
0
A
†
‡
§
Applies over temperature range –55°C to 70°C
Applies over temperature range 70°C to 125°C
Applies only to the -1 version and only if V
CC
is between 4.75 V and 5.25 V
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54ALS244C
SN74ALS244C
PARAMETER
TEST CONDITIONS
I = –18 mA
UNIT
¶
¶
MIN TYP
MAX
MIN TYP
MAX
V
IK
V
V
= 4.5 V,
–1.5
–1.5
V
CC
I
I
I
I
I
I
I
I
= –0.4 mA
= –3 mA
V
–2
V
–2
OH
OH
OH
OH
OL
OL
OL
CC
2.4
CC
2.4
= 4.5 V to 5.5 V
CC
3.2
3.2
V
OH
V
= –12 mA
= –15 mA
= 12 mA
2
V
V
= 4.5 V
= 4.5 V
CC
2
0.25
0.4
0.25
0.35
0.35
0.4
0.5
0.5
20
V
OL
= 24 mA
V
CC
= 48 mA (-1 version)
= 2.7 V
I
I
I
I
I
I
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
V
V
20
–20
0.1
µA
µA
OZH
OZL
I
O
= 0.4 V
–20
0.1
20
O
V = 7 V
I
mA
µA
V = 2.7 V
I
20
IH
V = 0.4 V
I
–0.1
–112
18
–0.1
–112
17
mA
mA
IL
#
V
O
= 2.25 V
–20
–30
O
Outputs high
Outputs low
9
15
17
9
15
17
I
V
CC
= 5.5 V
25
24
mA
CC
Outputs disabled
29
27
¶
#
All typical values are at V
= 5 V, T = 25°C.
A
CC
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, I
.
OS
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS244C, SN54AS244A, SN74ALS244C, SN74AS244A
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SDAS142C – JULY 1987 – REVISED AUGUST 1995
switching characteristics (see Figure 1)
V
C
= 4.5 V to 5.5 V,
= 50 pF,
CC
L
R1 = 500 Ω,
R2 = 500 Ω,
T
A
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
UNIT
†
= MIN to MAX
SN54ALS244C SN74ALS244C
MIN
1
MAX
16
MIN
2
MAX
10
t
t
t
t
t
t
PLH
PHL
PZH
PZL
PHZ
PLZ
A
ns
ns
ns
Y
Y
Y
3
12
3
10
1
26
3
20
OE
OE
1
24
3
20
2
10
2
10
1
26
1
13
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
‡
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
CC
Input voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
I
Voltage applied to a disabled 3-state output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Operating free-air temperature range, T : SN54AS244A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 125°C
A
SN74AS244A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°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.
recommended operating conditions
SN54AS244A
MIN NOM MAX
SN74AS244A
MIN NOM MAX
UNIT
V
V
V
Supply voltage
4.5
2
5
5.5
4.5
2
5
5.5
V
V
CC
High-level input voltage
Low-level input voltage
High-level output current
Low-level output current
Operating free-air temperature
IH
0.8
–12
48
0.8
–15
64
V
IL
I
I
mA
mA
°C
OH
OL
T
A
–55
125
0
70
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS244C, SN54AS244A, SN74ALS244C, SN74AS244A
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SDAS142C – JULY 1987 – REVISED AUGUST 1995
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54AS244A
SN74AS244A
PARAMETER
TEST CONDITIONS
UNIT
†
†
MIN TYP
MAX
MIN TYP
MAX
V
V
V
V
= 4.5 V,
I = –18 mA
–1.2
–1.2
V
IK
CC
I
= 4.5 V to 5.5 V,
I
I
I
I
I
I
= –2 mA
= –3 mA
= –12 mA
= –15 mA
= 48 mA
= 64 mA
= 2.7 V
V
–2
V
–2
CC
OH
OH
OH
OH
OL
OL
CC
2.4
CC
2.4
3.4
3.4
V
OH
V
CC
= 4.5 V
2.4
2.4
0.55
V
OL
V
CC
= 4.5 V
V
0.55
50
I
I
I
I
V
CC
V
CC
V
CC
V
CC
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
V
50
–50
0.1
µA
µA
mA
µA
OZH
OZL
I
O
O
V
= 0.4 V
–50
0.1
20
V = 7 V
I
V = 2.7 V
I
20
IH
OE
A
–0.5
–1
–0.5
–1
I
V
= 5.5 V,
= 5.5 V,
V = 0.4 V
mA
mA
IL
CC
CC
I
‡
I
O
V
V
O
= 2.25 V
–50
–150
34
–50
–150
34
Outputs high
Outputs low
22
60
34
22
60
34
I
V
CC
= 5.5 V
90
90
mA
CC
Outputs disabled
54
54
†
‡
All typical values are at V
= 5 V, T = 25°C.
A
CC
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, I
.
OS
switching characteristics (see Figure 1)
V
C
= 4.5 V to 5.5 V,
= 50 pF,
CC
L
R1 = 500 Ω,
R2 = 500 Ω,
T
A
FROM
TO
(OUTPUT)
PARAMETER
(INPUT)
UNIT
§
= MIN to MAX
SN54AS244A SN74AS244A
MIN
2
MAX
9
MIN
2
MAX
6.2
6.2
9
t
t
t
t
t
t
PLH
PHL
PZH
PZL
PHZ
PLZ
A
ns
ns
ns
Y
Y
Y
1
7
1
1
10
8
1
OE
OE
2
2
7.5
6
1
6.5
10.5
1
1
1
9
§
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS244C, SN54AS244A, SN74ALS244C, SN74AS244A
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SDAS142C – JULY 1987 – REVISED AUGUST 1995
PARAMETER MEASUREMENT INFORMATION
SERIES 54ALS/74ALS AND 54AS/74AS DEVICES
7 V
R
= R1 = R2
V
CC
L
S1
R1
R
L
Test
Point
From Output
Under Test
From Output
Under Test
Test
Point
Test
Point
From Output
Under Test
C
C
L
R
L
R2
L
C
L
(see Note A)
(see Note A)
(see Note A)
LOAD CIRCUIT FOR
BI-STATE
TOTEM-POLE OUTPUTS
LOAD CIRCUIT
FOR OPEN-COLLECTOR OUTPUTS
LOAD CIRCUIT
FOR 3-STATE OUTPUTS
3.5 V
3.5 V
Timing
Input
High-Level
1.3 V
1.3 V
1.3 V
Pulse
0.3 V
0.3 V
t
h
t
w
t
su
3.5 V
3.5 V
0.3 V
Data
Input
Low-Level
1.3 V
1.3 V
1.3 V
1.3 V
Pulse
0.3 V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
VOLTAGE WAVEFORMS
PULSE DURATIONS
3.5 V
0.3 V
Output
Control
(low-level
enabling)
1.3 V
1.3 V
3.5 V
t
PZL
Input
1.3 V
1.3 V
t
PLZ
0.3 V
PHL
3.5 V
t
Waveform 1
S1 Closed
(see Note B)
t
PLH
1.3 V
V
OH
In-Phase
Output
1.3 V
1.3 V
1.3 V
V
OL
0.3 V
V
OL
t
PHZ
t
PLH
t
PZH
t
PHL
V
OH
V
Waveform 2
S1 Open
(see Note B)
OH
OL
Out-of-Phase
Output
(see Note C)
1.3 V
1.3 V
0.3 V
V
0 V
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS
NOTES: A.
C includes probe and jig capacitance.
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. When measuring propagation delay items of 3-state outputs, switch S1 is open.
D. All input pulses have the following characteristics: PRR ≤ 1 MHz, t = t = 2 ns, duty cycle = 50%.
r
f
E. The outputs are measured one at a time with one transition per measurement.
Figure 1. Load Circuits and Voltage Waveforms
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PACKAGE OPTION ADDENDUM
www.ti.com
28-Feb-2005
PACKAGING INFORMATION
Orderable Device
Status (1)
Package Package
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
Qty
Type
LCCC
CDIP
CFP
Drawing
5962-86839012A
5962-8683901RA
5962-8683901SA
5962-9755901Q2A
5962-9755901QRA
5962-9755901QSA
JM38510/38303B2A
JM38510/38303BRA
SN54ALS244CJ
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
FK
J
20
20
20
20
20
20
20
20
20
20
20
1
1
None
None
None
None
None
None
None
None
None
None
Call TI
Call TI
Call TI
Call TI
Call TI
Call TI
Call TI
Call TI
Call TI
Call TI
Level-NC-NC-NC
Level-NC-NC-NC
Level-NC-NC-NC
Level-NC-NC-NC
Level-NC-NC-NC
Level-NC-NC-NC
Level-NC-NC-NC
Level-NC-NC-NC
Level-NC-NC-NC
Level-NC-NC-NC
W
FK
J
1
LCCC
CDIP
CFP
1
1
W
FK
J
1
LCCC
CDIP
CDIP
CDIP
SOIC
1
1
J
1
SN54AS244AJ
J
1
SN74ALS244C-1DW
DW
25
Pb-Free
(RoHS)
CU NIPDAU Level-2-250C-1 YEAR/
Level-1-235C-UNLIM
SN74ALS244C-1DWR
SN74ALS244C-1N
ACTIVE
ACTIVE
ACTIVE
SOIC
PDIP
SO
DW
N
20
20
20
2000
20
Pb-Free
(RoHS)
CU NIPDAU Level-2-250C-1 YEAR/
Level-1-235C-UNLIM
Pb-Free
(RoHS)
CU NIPDAU Level-NC-NC-NC
SN74ALS244C-1NSR
NS
2000
Pb-Free
(RoHS)
CU NIPDAU Level-2-260C-1 YEAR/
Level-1-235C-UNLIM
SN74ALS244CDBLE
SN74ALS244CDBR
OBSOLETE
ACTIVE
SSOP
SSOP
DB
DB
20
20
None
Call TI
Call TI
2000
25
Pb-Free
(RoHS)
CU NIPDAU Level-2-260C-1 YEAR/
Level-1-235C-UNLIM
SN74ALS244CDW
SN74ALS244CDWR
SN74ALS244CN
SN74ALS244CNSR
SN74AS244ADW
SN74AS244ADWR
SN74AS244AN
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
SOIC
SOIC
PDIP
SO
DW
DW
N
20
20
20
20
20
20
20
20
Pb-Free
(RoHS)
CU NIPDAU Level-2-250C-1 YEAR/
Level-1-235C-UNLIM
2000
20
Pb-Free
(RoHS)
CU NIPDAU Level-2-250C-1 YEAR/
Level-1-235C-UNLIM
Pb-Free
(RoHS)
CU NIPDAU Level-NC-NC-NC
NS
DW
DW
N
2000
25
Pb-Free
(RoHS)
CU NIPDAU Level-2-260C-1 YEAR/
Level-1-235C-UNLIM
SOIC
SOIC
PDIP
SO
Pb-Free
(RoHS)
CU NIPDAU Level-2-250C-1 YEAR/
Level-1-235C-UNLIM
2000
20
Pb-Free
(RoHS)
CU NIPDAU Level-2-250C-1 YEAR/
Level-1-235C-UNLIM
Pb-Free
(RoHS)
CU NIPDAU Level-NC-NC-NC
SN74AS244ANSR
NS
2000
Pb-Free
(RoHS)
CU NIPDAU Level-2-260C-1 YEAR/
Level-1-235C-UNLIM
SNJ54ALS244CFK
SNJ54ALS244CJ
SNJ54ALS244CW
SNJ54AS244AFK
SNJ54AS244AJ
SNJ54AS244AW
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
LCCC
CDIP
CFP
FK
J
20
20
20
20
20
20
1
1
1
1
1
1
None
None
None
None
None
None
Call TI
Call TI
Call TI
Call TI
Call TI
Call TI
Level-NC-NC-NC
Level-NC-NC-NC
Level-NC-NC-NC
Level-NC-NC-NC
Level-NC-NC-NC
Level-NC-NC-NC
W
FK
J
LCCC
CDIP
CFP
W
(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.
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
28-Feb-2005
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)
Eco Plan - May not be currently available - please check http://www.ti.com/productcontent for the latest availability information and additional
product content details.
None: Not yet available Lead (Pb-Free).
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.
Green (RoHS & no Sb/Br): TI defines "Green" to mean "Pb-Free" and in addition, uses package materials that do not contain halogens,
including bromine (Br) or antimony (Sb) above 0.1% of total product weight.
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDECindustry standard classifications, and peak solder
temperature.
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Addendum-Page 2
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