SN74AS757DWE4 [TI]
OCTAL BUFFERS AND LINE DRIVERS WITH OPEN-COLLECTOR OUTPUTS; 八路缓冲器及其与集电极开路输出线路驱动器型号: | SN74AS757DWE4 |
厂家: | TEXAS INSTRUMENTS |
描述: | OCTAL BUFFERS AND LINE DRIVERS WITH OPEN-COLLECTOR OUTPUTS |
文件: | 总17页 (文件大小:549K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
SN54AS756, SN74AS756, SN74AS757
OCTAL BUFFERS AND LINE DRIVERS
WITH OPEN-COLLECTOR OUTPUTS
SDAS040B – DECEMBER 1983 – REVISED JANUARY 1995
SN54AS756 . . . J PACKAGE
SN74AS756, SN74AS757 . . . DW OR N PACKAGE
(TOP VIEW)
• Open-Collector Outputs Drive Bus Lines or
Buffer Memory Address Registers
• Eliminate the Need for 3-State Overlap
Protection
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
V
CC
2OE/2OE
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
†
• pnp Inputs Reduce dc Loading
1Y1
2A4
1Y2
2A3
• Open-Collector Versions of ′AS240A and
′AS241
• Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), and Standard Plastic (N)
and Ceramic (J) 300-mil DIPs
1Y3
13 2A2
12 1Y4
11
2A1
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 by eliminating the need for 3-state
overlap protection. The designer has a choice of
selected combinations of inverting and
noninverting outputs, symmetrical active-low
output-enable (OE) inputs, and complementary
OE and OE inputs. These devices feature high
fan-out and improved fan-in.
SN54AS756 . . . 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
17
16
15
14
9 10 11 12 13
The SN54AS756 is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74AS756 and SN74AS757 are
characterized for operation from 0°C to 70°C.
†
2OE for ′AS756 or 2OE for SN74AS757
‡
logic symbols
′AS756
SN74AS757
EN
1
1
EN
1OE
1OE
2
4
6
8
18
16
14
12
2
4
6
8
18
16
14
12
1A1
1A2
1A3
1A4
1Y1
1Y2
1Y3
1Y4
1A1
1A2
1A3
1A4
1Y1
1Y2
1Y3
1Y4
19
19
2OE
EN
2OE
EN
11
13
15
17
9
7
5
3
11
13
15
17
9
7
5
3
2A1
2A2
2A3
2A4
2Y1
2Y2
2Y3
2Y4
2A1
2A2
2A3
2A4
2Y1
2Y2
2Y3
2Y4
‡
These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
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
SN54AS756, SN74AS756, SN74AS757
OCTAL BUFFERS AND LINE DRIVERS
WITH OPEN-COLLECTOR OUTPUTS
SDAS040B – DECEMBER 1983 – REVISED JANUARY 1995
logic diagrams (positive logic)
′AS756
SN74AS757
1
1
1OE
1OE
18
16
18
16
2
4
2
4
1Y1
1Y2
1Y3
1Y4
1Y1
1Y2
1Y3
1Y4
1A1
1A2
1A1
1A2
14
12
14
12
6
8
6
8
1A3
1A4
1A3
1A4
19
19
2OE
2OE
9
7
9
7
11
13
11
13
2Y1
2Y2
2Y1
2Y2
2A1
2A2
2A3
2A4
2A1
2A2
2A3
2A4
5
3
5
3
15
17
15
17
2Y3
2Y4
2Y3
2Y4
†
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
CC
Input voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
I
Off-state output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Operating free-air temperature range, T : SN54AS756 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 125°C
A
SN74AS756, SN74AS757 . . . . . . . . . . . . . . . . . . . . . . 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
SN54AS756, SN74AS756, SN74AS757
OCTAL BUFFERS AND LINE DRIVERS
WITH OPEN-COLLECTOR OUTPUTS
SDAS040B – DECEMBER 1983 – REVISED JANUARY 1995
recommended operating conditions
SN74AS756
SN54AS756
SN74AS757
UNIT
MIN NOM
MAX
MIN NOM
MAX
V
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 voltage
Low-level output current
Operating free-air temperature
IH
0.7
5.5
48
0.8
5.5
64
V
IL
V
OH
I
mA
°C
OL
T
A
–55
125
0
70
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN74AS756
SN54AS756
SN74AS757
PARAMETER
TEST CONDITIONS
UNIT
†
†
MIN TYP
MAX
–1.2
0.1
MIN TYP
MAX
–1.2
0.1
V
V
V
= 4.5 V,
= 4.5 V,
I = –18 mA
V
IK
CC
I
I
V
OH
= 5.5 V
mA
OH
CC
I
I
= 48 mA
= 64 mA
0.55
OL
V
V
= 4.5 V
V
OL
CC
0.55
0.1
20
OL
I
I
V
V
= 5.5 V,
= 5.5 V,
V = 7 V
0.1
20
mA
I
CC
I
V = 2.7 V
µA
IH
CC
I
A inputs of
SN74AS757 only
–1
–1
I
V
CC
= 5.5 V,
V = 0.4 V
I
mA
mA
IL
All other inputs
–0.5
15
–0.5
15
Outputs high
Outputs low
Outputs high
Outputs low
9
9
′AS756
V
V
= 5.5 V
= 5.5 V
CC
51
21
61
80
51
21
61
80
I
CC
33
33
SN74AS757
CC
95
95
†
All typical values are at V
= 5 V, T = 25°C.
A
CC
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54AS756, SN74AS756, SN74AS757
OCTAL BUFFERS AND LINE DRIVERS
WITH OPEN-COLLECTOR OUTPUTS
SDAS040B – DECEMBER 1983 – REVISED JANUARY 1995
switching characteristics (see Figure 1)
V
C
R
= 4.5 V to 5.5 V,
= 50 pF,
CC
L
L
= 500 Ω,
FROM
TO
(OUTPUT)
†
PARAMETER
(INPUT)
UNIT
T
A
= MIN to MAX
SN54AS756
SN74AS756
MIN
3
MAX
20
MIN
3
MAX
19
t
t
t
t
PLH
PHL
PLH
PHL
A
ns
ns
Y
Y
1
7
1
6
3
22
3
19.5
7.5
OE
1
8.5
1
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
switching characteristics (see Figure 1)
V
C
R
= 4.5 V to 5.5 V,
= 50 pF,
CC
L
L
= 500 Ω,
FROM
TO
(OUTPUT)
†
PARAMETER
(INPUT)
UNIT
T
A
= MIN to MAX
SN74AS757
MIN
3
MAX
18.5
6
t
t
t
t
t
t
PLH
PHL
PLH
PHL
PLH
PHL
A
ns
ns
ns
Y
1
3
20
1OE
2OE
1Y
2Y
1
7
3
21
1
7.5
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54AS756, SN74AS756, SN74AS757
OCTAL BUFFERS AND LINE DRIVERS
WITH OPEN-COLLECTOR OUTPUTS
SDAS040B – DECEMBER 1983 – REVISED JANUARY 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
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PACKAGE OPTION ADDENDUM
www.ti.com
6-Dec-2006
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
5962-90563012A
5962-9056301RA
5962-9056301SA
SN54AS756J
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
FK
J
20
20
20
20
20
1
1
1
1
TBD
TBD
TBD
TBD
POST-PLATE N / A for Pkg Type
A42 SNPB
A42
N / A for Pkg Type
N / A for Pkg Type
N / A for Pkg Type
W
J
CDIP
SOIC
A42 SNPB
SN74AS756DW
DW
25 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
SN74AS756DWE4
SN74AS756DWR
SN74AS756DWRE4
SN74AS756N
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
SOIC
SOIC
SOIC
PDIP
PDIP
SOIC
SOIC
SOIC
SOIC
PDIP
PDIP
SO
DW
DW
DW
N
20
20
20
20
20
20
20
20
20
20
20
20
20
25 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
20
Pb-Free
(RoHS)
CU NIPDAU N / A for Pkg Type
SN74AS756NE4
SN74AS757DW
SN74AS757DWE4
SN74AS757DWR
SN74AS757DWRE4
SN74AS757N
N
20
Pb-Free
(RoHS)
CU NIPDAU N / A for Pkg Type
DW
DW
DW
DW
N
25 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
25 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
20
Pb-Free
(RoHS)
CU NIPDAU N / A for Pkg Type
SN74AS757NE4
SN74AS757NSR
SN74AS757NSRE4
N
20
Pb-Free
(RoHS)
CU NIPDAU N / A for Pkg Type
NS
NS
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
SO
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
SNJ54AS756FK
SNJ54AS756J
SNJ54AS756W
ACTIVE
ACTIVE
ACTIVE
LCCC
CDIP
CFP
FK
J
20
20
20
1
1
1
TBD
TBD
TBD
POST-PLATE N / A for Pkg Type
A42 SNPB
A42
N / A for Pkg Type
N / A for Pkg Type
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.
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 - 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
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
6-Dec-2006
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.
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.
Addendum-Page 2
PACKAGE MATERIALS INFORMATION
www.ti.com
30-Apr-2007
TAPE AND REEL INFORMATION
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
30-Apr-2007
Device
Package Pins
Site
Reel
Reel
A0 (mm)
B0 (mm)
K0 (mm)
P1
W
Pin1
Diameter Width
(mm) (mm) Quadrant
(mm)
330
(mm)
24
SN74AS756DWR
SN74AS757DWR
SN74AS757NSR
DW
DW
NS
20
20
20
MLA
MLA
MLA
10.8
10.8
8.2
13.0
13.0
13.0
2.7
2.7
2.5
12
12
12
24
24
24
Q1
Q1
Q1
330
24
330
24
TAPE AND REEL BOX INFORMATION
Device
Package
Pins
Site
Length (mm) Width (mm) Height (mm)
SN74AS756DWR
SN74AS757DWR
SN74AS757NSR
DW
DW
NS
20
20
20
MLA
MLA
MLA
333.2
333.2
333.2
333.2
333.2
333.2
31.75
31.75
31.75
Pack Materials-Page 2
PACKAGE MATERIALS INFORMATION
www.ti.com
30-Apr-2007
Pack Materials-Page 3
MECHANICAL DATA
MLCC006B – OCTOBER 1996
FK (S-CQCC-N**)
LEADLESS CERAMIC CHIP CARRIER
28 TERMINAL SHOWN
A
B
NO. OF
TERMINALS
**
18 17 16 15 14 13 12
MIN
MAX
MIN
MAX
0.342
(8,69)
0.358
(9,09)
0.307
(7,80)
0.358
(9,09)
19
20
11
10
9
20
28
44
52
68
84
0.442
(11,23)
0.458
(11,63)
0.406
(10,31)
0.458
(11,63)
21
B SQ
22
0.640
(16,26)
0.660
(16,76)
0.495
(12,58)
0.560
(14,22)
8
A SQ
23
0.739
(18,78)
0.761
(19,32)
0.495
(12,58)
0.560
(14,22)
7
24
25
6
0.938
(23,83)
0.962
(24,43)
0.850
(21,6)
0.858
(21,8)
5
1.141
(28,99)
1.165
(29,59)
1.047
(26,6)
1.063
(27,0)
26 27 28
1
2
3
4
0.080 (2,03)
0.064 (1,63)
0.020 (0,51)
0.010 (0,25)
0.020 (0,51)
0.010 (0,25)
0.055 (1,40)
0.045 (1,14)
0.045 (1,14)
0.035 (0,89)
0.045 (1,14)
0.035 (0,89)
0.028 (0,71)
0.022 (0,54)
0.050 (1,27)
4040140/D 10/96
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. This package can be hermetically sealed with a metal lid.
D. The terminals are gold plated.
E. Falls within JEDEC MS-004
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military
specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is
solely at the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in
connection with such use.
TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products
are designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any
non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements.
Following are URLs where you can obtain information on other Texas Instruments products and application solutions:
Products
Amplifiers
Data Converters
DSP
Applications
Audio
amplifier.ti.com
dataconverter.ti.com
dsp.ti.com
www.ti.com/audio
Automotive
Broadband
Digital Control
Military
www.ti.com/automotive
www.ti.com/broadband
www.ti.com/digitalcontrol
www.ti.com/military
Interface
interface.ti.com
logic.ti.com
Logic
Power Mgmt
Microcontrollers
power.ti.com
Optical Networking
Security
www.ti.com/opticalnetwork
www.ti.com/security
microcontroller.ti.com
www.ti.com/lpw
Low Power
Wireless
Telephony
www.ti.com/telephony
Video & Imaging
Wireless
www.ti.com/video
www.ti.com/wireless
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