SN74BCT760 [TI]
OCTAL BUFFERS/DRIVERS WITH OPEN-COLLECTOR OUTPUTS; 八路缓冲器/带集电极开路输出驱动程序
| 型号： | SN74BCT760 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | OCTAL BUFFERS/DRIVERS WITH OPEN-COLLECTOR OUTPUTS |
| 文件： | 总5页 (文件大小：74K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN54BCT760, SN74BCT760
OCTAL BUFFERS/DRIVERS
WITH OPEN-COLLECTOR OUTPUTS
SCBS034B – JULY 1989 – REVISED NOVEMBER 1993
SN54BCT760 . . . J OR W PACKAGE
SN74BCT760 . . . DW OR N PACKAGE
(TOP VIEW)
• Open-Collector Version of ′BCT244
• Open-Collector Outputs Drive Bus Lines or
Buffer Memory Address Registers
• ESD Protection Exceeds 2000 V Per
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
MIL-STD-883C Method 3015
2OE
1Y1
2A4
1Y2
2A3
1Y3
• Packages Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK) and Flatpacks (W), and
Standard Plastic and Ceramic 300-mil DIPs
(J, N)
13 2A2
12 1Y4
description
11
2A1
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.
SN54BCT760 . . . FK PACKAGE
(TOP VIEW)
The ′BCT760 is organized as two 4-bit buffers/line
drivers with separate output-enable (OE) inputs.
When OE is low, the device passes data from the
A inputs to the Y outputs. When OE is high, the
outputs are in the high-impedance state.
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
The SN54BCT760 is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74BCT760 is characterized for
operation from 0°C to 70°C.
9 10 11 12 13
FUNCTION TABLE
(each buffer)
INPUTS
OUTPUT
Y
H
L
OE
A
H
L
L
L
H
X
H
Copyright 1993, 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.
2–1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54BCT760, SN74BCT760
OCTAL BUFFERS/DRIVERS
WITH OPEN-COLLECTOR OUTPUTS
SCBS034B – JULY 1989 – REVISED NOVEMBER 1993
†
logic symbol
logic diagram (positive logic)
1
1OE
1
1OE
EN
18
16
2
2
4
6
8
18
16
14
12
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
15
5
3
2Y3
2Y4
2A3
17
2A4
‡
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 7 V
I
Input current range, I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –30 mA to 5 mA
I
Voltage range applied to any output in the disabled or power-off state, V . . . . . . . . . . . . . . . – 0.5 V to 5.5 V
O
Voltage range applied to any output in the high state, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to V
O
CC
Current into any output in the low state: SN54BCT760 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA
SN74BCT760 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA
Operating free-air temperature range: SN54BCT760 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C
SN74BCT760 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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.
NOTE 1: The negative input voltage rating may be exceeded if the input clamp current rating is observed.
2–2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54BCT760, SN74BCT760
OCTAL BUFFERS/DRIVERS
WITH OPEN-COLLECTOR OUTPUTS
SCBS034B – JULY 1989 – REVISED NOVEMBER 1993
recommended operating conditions
SN54BCT760
MIN NOM MAX
SN74BCT760
MIN NOM MAX
UNIT
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
Input clamp current
IH
0.8
5.5
–18
48
0.8
5.5
–18
64
V
IL
V
OH
I
I
mA
mA
°C
IK
Low-level output current
Operating free-air temperature
OL
T
A
–55
125
0
70
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54BCT760
SN74BCT760
PARAMETER
TEST CONDITIONS
UNIT
V
†
†
MIN TYP
MAX
–1.2
0.55
MIN TYP
MAX
V
V
V
V
= 4.5 V,
= 4.5 V
I = –18 mA
I
–1.2
IK
CC
I
= 48 mA
= 64 mA
0.38
OL
OL
V
OL
CC
I
0.42
0.55
0.1
20
I
I
I
I
V
CC
V
CC
V
CC
V
CC
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 4.5 V,
V = 7 V
I
0.1
20
–1
0.1
33
76
10
mA
µA
I
V = 2.7 V
I
IH
V = 0.5 V
I
–1
0.1
33
mA
mA
IL
V
OH
= 5.5 V
OH
Outputs high
21
48
6
21
48
6
I
V
CC
= 5.5 V,
Outputs open Outputs low
OE disabled
76
mA
CC
10
C
C
V
V
= 5 V,
= 5 V,
V = 2.5 V or 0.5 V
6
6
pF
pF
i
CC
I
V = 2.5 V or 0.5 V
I
10
10
o
CC
†
All typical values are at V
= 5 V, T = 25°C.
A
CC
switching characteristics (see Note 2)
V
C
R
= 5 V,
= 50 pF,
= 500 Ω,
= 25°C
V
C
R
= 4.5 V to 5.5 V,
= 50 pF,
CC
L
L
CC
L
L
= 500 Ω,
= MIN to MAX
FROM
(INPUT)
TO
(OUTPUT)
‡
PARAMETER
UNIT
T
A
T
A
′BCT760
TYP
8
SN54BCT760 SN74BCT760
MIN
6.3
2.1
8.6
3.2
MAX
9.5
MIN
6.3
2.1
8.6
3.2
MAX
11.1
7.7
MIN
6.3
2.1
8.6
3.2
MAX
10
t
t
t
t
PLH
PHL
PLH
PHL
Y
Y
ns
ns
Any A
OE
4.3
6.5
7.2
13
15.2
8.9
18.7
10.4
17.5
9.9
6.2
‡
For conditions shown as MIN or MAX, use the appropriate values specified under recommended operating conditions.
NOTE 2: Load circuits and voltage waveforms are shown in Section 1.
2–3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
2–4
IMPORTANT NOTICE
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any product or service without notice, and advise customers to obtain the latest version of relevant information
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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
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BE FULLY AT THE CUSTOMER’S RISK.
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safeguards must be provided by the customer to minimize inherent or procedural hazards.
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Copyright 1998, Texas Instruments Incorporated
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