SN54F520 [TI]
8-BIT IDENTITY COMPARATORS; 8位身份比较仪
| 型号： | SN54F520 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 8-BIT IDENTITY COMPARATORS |
| 文件： | 总5页 (文件大小：77K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN54F520, SN74F520
8-BIT IDENTITY COMPARATORS
SDFS081A – MARCH 1987 – REVISED OCTOBER 1993
SN54F520 . . . J PACKAGE
SN74F520 . . . DW OR N PACKAGE
(TOP VIEW)
• Compares Two 8-Bit Words
• 20-kΩ Pullup Resistors on Q Inputs
• Package Options Include Plastic
Small-Outline Packages, Ceramic Chip
Carriers, and Standard Plastic and Ceramic
300-mil DIPs
OE
P0
Q0
P1
Q1
P2
Q2
P3
Q3
V
CC
P = Q
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
Q7
P7
Q6
P6
description
These identity comparators perform comparisons
on two 8-bit binary or BCD words. They provide
P = Q outputs. The ′F520 features 20-kΩ pullup
termination resistors on the Q inputs for analog or
switch data.
Q5
13 P5
12 Q4
11
GND
P4
The SN54F520 is characterized for operation over
the full military temperature range of –55°C to
125°C. The SN74F520 is characterized for
operation from 0°C to 70°C.
SN54F520 . . . FK PACKAGE
(TOP VIEW)
FUNCTION TABLE
3
2
1
20 19
18
INPUTS
OUTPUT
P = Q
Q7
P7
Q6
P6
Q5
P1
Q1
P2
Q2
P3
4
5
6
7
8
P, Q
OE
L
17
16
15
14
P = Q
P ≠ Q
X
L
H
H
X
H
9 10 11 12 13
†
logic symbol
COMP
1
OE
2
P0
0
4
P1
6
P2
8
P3
11
P
P4
13
P5
15
P6
17
P7
3
7
0
19
P = Q
1P = Q
Q0
5
Q1
7
Q2
9
Q3
12
Q4
14
Q5
16
Q6
18
Q7
Q
7
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
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
SN54F520, SN74F520
8-BIT IDENTITY COMPARATORS
SDFS081A – MARCH 1987 – REVISED OCTOBER 1993
logic diagram (positive logic)
17
P7
18
Q7
15
P6
16
Q6
13
P5
14
Q5
11
P4
12
Q4
19
P = Q
8
P3
9
Q3
6
P2
7
Q2
4
P1
5
Q1
2
P0
3
Q0
1
OE
NOTE: 20-kΩ pullup resistors are on the Q inputs.
2–2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54F520, SN74F520
8-BIT IDENTITY COMPARATORS
SDFS081A – MARCH 1987 – REVISED OCTOBER 1993
†
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) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –1.2 V to 7 V
I
Input current range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –30 mA to 5 mA
Voltage range applied to any output in the high state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
CC
Current into any output in the low state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 mA
Operating free-air temperature range: SN54F520 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 125°C
SN74F520 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 input voltage ratings may be exceeded provided the input current ratings are observed.
recommended operating conditions
SN54F520
SN74F520
UNIT
MIN NOM
MAX
MIN NOM
MAX
V
V
V
Supply voltage
4.5
2
5
5.5
4.5
2
5
5.5
V
V
CC
IH
IL
High-level input voltage
Low-level input voltage
Input clamp current
0.8
–18
– 1
0.8
–18
– 1
20
V
I
I
I
mA
mA
mA
°C
IK
High-level output current
Low-level output current
Operating free-air temperature
OH
OL
20
T
A
–55
125
0
70
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54F520
SN74F520
PARAMETER
TEST CONDITIONS
UNIT
V
‡
‡
MIN TYP
MAX
MIN TYP
MAX
V
V
V
V
V
V
V
= 4.5 V,
= 4.5 V,
= 4.75 V,
= 4.5 V,
I = –18 mA
I
–1.2
–1.2
IK
CC
CC
CC
CC
I
I
I
= – 1 mA
= – 1 mA
= 20 mA
2.5
3.4
0.3
2.5
2.7
3.4
0.3
OH
OH
OL
V
OH
OL
0.5
0.1
0.5
0.1
V
OE and P inputs
Q inputs
V = 7 V
I
I
I
I
V
CC
V
CC
V
CC
= 5.5 V
= 5.5 V,
= 5.5 V,
mA
I
V = 5.5 V
I
0.1
0.1
OE and P inputs
Q inputs
20
20
µA
V = 2.7 V
I
IH
IL
–0.3
– 0.6
– 1
–0.3
– 0.6
– 1
mA
OE and P inputs
Q inputs
V = 0.5 V
I
mA
§
I
I
V
V
= 5.5 V,
= 5.5 V,
V = 0
O
–60
–150
32
–60
–150
32
mA
mA
OS
CC
CC
See Note 2
21
21
CC
‡
§
All typical values are at V
= 5 V, T = 25°C.
A
CC
Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.
NOTE 2: is measured with all inputs at 4.5 V.
I
CC
2–3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54F520, SN74F520
8-BIT IDENTITY COMPARATORS
SDFS081A – MARCH 1987 – REVISED OCTOBER 1993
switching characteristics (see Note 3)
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
= 500Ω,
FROM
(INPUT)
TO
(OUTPUT)
†
PARAMETER
UNIT
T
A
T
A
= MIN to MAX
′F520
TYP
5.7
SN54F520
SN74F520
MIN
3.9
4.7
3.5
5.2
MAX
7.7
MIN
3.7
4.4
3.4
4.9
MAX
MIN
3.7
4.4
3.4
4.9
MAX
t
t
t
t
10.2
11.3
7
8.7
10.3
6.4
PLH
PHL
PLH
PHL
P or Q
OE
ns
ns
P = Q
P = Q
7
9.3
4.6
5.8
7.5
9.5
11.2
10.4
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
NOTE 3: Load circuits and waveforms are shown in Section 1.
2–4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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.
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.
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Copyright 1998, Texas Instruments Incorporated
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