SN54AS760 [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![SN54AS760](http://pdffile.icpdf.com/pdf1/p00060/img/icpdf/SN54AS760_315884_icpdf.jpg)
型号: | SN54AS760 |
厂家: | ![]() |
描述: | OCTAL BUFFERS AND LINE DRIVERS WITH OPEN-COLLECTOR OUTPUTS |
文件: | 总6页 (文件大小:97K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
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SN54AS760, SN74ALS760, SN74AS760
OCTAL BUFFERS AND LINE DRIVERS
WITH OPEN-COLLECTOR OUTPUTS
SDAS141A – DECEMBER 1983 – REVISED JANUARY 1995
SN54AS760 . . . J PACKAGE
SN74ALS760, SN74AS760 . . . DW OR N PACKAGE
(TOP VIEW)
• Open-Collector Outputs Drive Bus Lines or
Buffer Memory Address Registers
• Eliminates the Need for 3-State Overlap
Protection
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
• pnp Inputs Reduce dc Loading
2OE
1Y1
2A4
1Y2
2A3
1Y3
• Open-Collector Versions of ′ALS244 and
′AS244
• Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), and Standard Plastic (N)
and Ceramic (J) 300-mil DIPs
13 2A2
12 1Y4
11
2A1
description
These octal buffers and line 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 by eliminating the need for 3-state
overlap protection. With the ′AS756 and
SN74AS757, these devices provide the choice of
selected combinations of inverting outputs,
symmetrical active-low output-enable (OE)
inputs, and complementary OE and OE inputs.
SN54AS760 . . . 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 SN54AS760 is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74ALS760 and SN74AS760 are
characterized for operation from 0°C to 70°C.
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
SN54AS760, SN74ALS760, SN74AS760
OCTAL BUFFERS AND LINE DRIVERS
WITH OPEN-COLLECTOR OUTPUTS
SDAS141A – DECEMBER 1983 – REVISED JANUARY 1995
†
logic symbol
logic diagram (positive logic)
1
1OE
1
1OE
EN
18
16
2
4
6
8
18
16
14
12
2
1Y1
1Y2
1A1
1A1
1A2
1A3
1A4
1Y1
1Y2
1Y3
1Y4
4
1A2
14
12
6
1Y3
1Y4
1A3
19
EN
2OE
8
1A4
11
13
15
17
9
7
5
3
2A1
2A2
2A3
2A4
2Y1
2Y2
2Y3
2Y4
19
2OE
9
7
11
2Y1
2Y2
2A1
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
13
2A2
5
3
15
2Y3
2Y4
2A3
17
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
Off-state output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Operating free-air temperature range, T : SN74ALS760 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
A
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
SN74ALS760
MIN NOM MAX
UNIT
V
V
V
V
Supply voltage
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
0.8
5.5
24
V
IL
V
OH
I
mA
°C
OL
T
A
0
70
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54AS760, SN74ALS760, SN74AS760
OCTAL BUFFERS AND LINE DRIVERS
WITH OPEN-COLLECTOR OUTPUTS
SDAS141A – DECEMBER 1983 – REVISED JANUARY 1995
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN74ALS760
PARAMETER
TEST CONDITIONS
UNIT
†
MIN TYP
MAX
–1.5
0.1
0.4
0.5
0.1
20
V
IK
V
V
= 4.5 V,
I = –18 mA
I
V
CC
I
= 4.5 V,
V
OH
= 5.5 V
mA
OH
CC
I
I
= 12 mA
= 24 mA
0.25
0.35
OL
I
V
CC
= 4.5 V
V
OL
OL
I
I
I
V
CC
V
CC
V
CC
= 5.5 V,
= 5.5 V,
= 5.5 V,
V = 7 V
mA
µA
I
I
V = 2.7 V
I
IH
IL
V = 0.4 V
I
–0.1
15
mA
Outputs high
Outputs low
9
I
V
CC
= 5.5 V
mA
CC
15
19
†
All typical values are at V
= 5 V, T = 25°C.
A
CC
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
SN74ALS760
MIN
5
MAX
15
t
t
t
t
PLH
PHL
PLH
PHL
A
ns
ns
Y
Y
5
12
5
16
OE
5
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
Off-state output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Operating free-air temperature range, T : SN54AS760 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 125°C
A
SN74AS760 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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.
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54AS760, SN74ALS760, SN74AS760
OCTAL BUFFERS AND LINE DRIVERS
WITH OPEN-COLLECTOR OUTPUTS
SDAS141A – DECEMBER 1983 – REVISED JANUARY 1995
recommended operating conditions
SN54AS760
MIN NOM
SN74AS760
MIN NOM
UNIT
MAX
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
0.8
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)
SN54AS760
SN74AS760
PARAMETER
TEST CONDITIONS
UNIT
†
†
MIN TYP
MAX
–1.2
0.1
MIN TYP
MAX
–1.2
0.1
V
IK
V
V
= 4.5 V,
= 4.5 V,
I = –18 mA
I
V
CC
I
V
OH
= 5.5 V
mA
OH
CC
I
= 48 mA
= 64 mA
0.55
OL
OL
V
V
= 4.5 V
V
OL
CC
I
0.55
0.1
20
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
IL
CC
I
OE
A
–0.5
–1
–0.5
–1
I
I
V
CC
= 5.5 V,
= 5.5 V
V = 0.4 V
I
mA
mA
Outputs high
Outputs low
20
60
32
20
60
32
V
CC
CC
94
94
†
All typical values are at V
= 5 V, T = 25°C.
A
CC
switching characteristics (see Figure 1)
V
C
R
= 4.5 V to 5.5 V,
= 50 pF,
CC
L
L
= 500 Ω,
= MIN to MAX
FROM
TO
(OUTPUT)
‡
PARAMETER
(INPUT)
UNIT
T
A
SN54AS760
SN74AS760
MIN
3
MAX
19.5
7
MIN
3
MAX
18.5
6
t
t
t
t
PLH
PHL
PLH
PHL
A
ns
ns
Y
Y
1
1
3
19.5
8
3
18.5
7
OE
1
1
‡
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54AS760, SN74ALS760, SN74AS760
OCTAL BUFFERS AND LINE DRIVERS
WITH OPEN-COLLECTOR OUTPUTS
SDAS141A – 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
IMPORTANT NOTICE
Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER
CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO
BE FULLY AT THE CUSTOMER’S RISK.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 1998, Texas Instruments Incorporated
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