74ACT11521N [TI]
8-BIT IDENTITY COMPARATORS;
| 型号： | 74ACT11521N |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 8-BIT IDENTITY COMPARATORS 光电二极管 逻辑集成电路 |
| 文件： | 总5页 (文件大小：84K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ꢀ ꢁ ꢂꢃꢄ ꢅꢅ ꢀ ꢆ ꢅ ꢇꢈ ꢉ ꢁꢂ ꢃꢄ ꢅꢅꢀ ꢆꢅ
ꢊ ꢋꢌꢍ ꢄꢈ ꢍꢎꢏ ꢐꢄ ꢍꢄ ꢑꢈꢃ ꢒꢓ ꢔꢂꢕ ꢂꢄꢒ ꢕꢖ
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SCAS023A − D2957, JULY 1978 − REVISED APRIL 1993
54ACT11521 . . . J PACKAGE
74ACT11521 . . . DB, DW OR N PACKAGE
• Compares Two 8-Bit Words
• Inputs Are TTL-Voltage Compatible
(TOP VIEW)
• Flow-Through Architecture Optimizes
PCB Layout
Q1
P1
Q0
G
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
P2
Q2
P3
G3
V
• Center-Pin V
and GND Configurations
Minimize High-Speed Switching Noise
CC
P0
• EPICt (Enhanced-Performance Implanted
GND
P = Q
G7
CMOS) 1-mm Process
CC
• 500-mA Typical Latch-Up Immunity
at 125°C
• Package Options Include Plastic Small-
Outline Packages, Plastic Shrink
Small-Outline Packages, Ceramic Chip
Carriers, and Standard Plastic and Ceramic
300-mil DIPs
P4
P7
Q6
P6
13 Q4
12 P5
11
Q5
54ACT11521 . . . FK PACKAGE
(TOP VIEW)
description
These identity comparators perform comparisons
on two 8-bit binary or BCD words. Also included
is a P = Q totem-pole output.
3
2
1
20 19
18
Q4
P5
Q5
P6
Q6
P2
G
4
5
6
7
8
17
16
15
14
The 54ACT11521 is characterized for operation
over the full military temperature range of − 55°C
to 125°C. The 74ACT11521 is characterized for
operation from − 40°C to 85°C.
Q1
P1
Q0
9 10 11 12 13
FUNCTION TABLE
INPUTS
OUTPUT
P = Q
DATA
P, Q
ENABLE
G
P = Q
P > Q
P < Q
X
L
L
L
H
H
H
L
H
EPIC is a trademark of Texas Instruments Incorporated.
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Copyright 1993, Texas Instruments Incorporated
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ꢠ ꢤ ꢡ ꢠꢙ ꢚꢮ ꢜꢛ ꢟ ꢧꢧ ꢥꢟ ꢝ ꢟ ꢞ ꢤ ꢠ ꢤ ꢝ ꢡ ꢩ
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2−1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001
ꢀ ꢁꢂ ꢃ ꢄ ꢅꢅ ꢀꢆ ꢅ ꢇ ꢈ ꢉ ꢁꢂ ꢃꢄ ꢅꢅ ꢀ ꢆꢅ
ꢊ ꢋꢌ ꢍ ꢄ ꢈꢍ ꢎ ꢏꢐ ꢄ ꢍ ꢄꢑꢈ ꢃꢒ ꢓꢔꢂꢕ ꢂꢄꢒ ꢕꢖ
ꢗ
SCAS023A − D2957, JULY 1978 − REVISED APRIL 1993
†
logic symbol
logic diagram (positive logic)
8
20
4
COMP
P7
G
P0
P1
P2
P3
P4
P5
P6
P7
G1
0
7
Q7
2
19
17
14
12
10
8
10
P6
P
9
Q6
12
P5
7
0
6
11
Q5
1P = Q
P = Q
3
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
1
14
P4
18
16
13
11
9
13
Q4
Q
17
P3
6
P = Q
16
Q3
7
7
19
P2
†
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
18
Q2
2
P1
1
Q1
4
P0
3
Q0
20
G
Pin numbers shown are for the DW, J, and N packages.
‡
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 6 V
CC
Input voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to V
+ 0.5 V
+ 0.5 V
I
CC
CC
Output voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to V
O
Input clamp current, I (V < 0 or V > V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
IK
I
I
CC
Output clamp current, I
(V < 0 or V > V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
OK
O O CC
Continuous output current, I (V = 0 to V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Continuous current through V
O
O
CC
CC
or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mA
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 and output voltage ratings may be exceeded if the input and output current ratings are observed.
2−2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001
ꢀ ꢁ ꢂꢃꢄ ꢅꢅ ꢀ ꢆ ꢅ ꢇꢈ ꢉ ꢁꢂ ꢃꢄ ꢅꢅꢀ ꢆꢅ
ꢊ ꢋꢌꢍ ꢄꢈ ꢍꢎꢏ ꢐꢄ ꢍꢄ ꢑꢈꢃ ꢒꢓ ꢔꢂ ꢕꢂꢄꢒ ꢕꢖ
ꢗ
SCAS023A − D2957, JULY 1978 − REVISED APRIL 1993
recommended operating conditions
54ACT11521
74ACT11521
UNIT
MIN
4.5
2
NOM
MAX
MIN
NOM
MAX
V
V
V
V
V
Supply voltage
5
5.5
4.5
2
5
5.5
V
V
CC
IH
IL
High-level input voltage
Low-level input voltage
Input voltage
0.8
0.8
V
0
0
V
V
0
0
V
V
V
I
CC
CC
Output voltage
V
O
CC
CC
I
I
High-level output current
Low-level output current
Input transition rise or fall rate
Operating free-air temperature
−24
24
−24
24
mA
mA
ns/V
°C
OH
OL
Dt/Dv
0
10
0
10
T
−55
125
−40
85
A
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
T
A
= 25°C
54ACT11521
74ACT11521
PARAMETER
TEST CONDITIONS
V
UNIT
CC
MIN
4.4
TYP
MAX
MIN
4.4
MAX
MIN
4.4
5.4
3.8
4.8
MAX
4.5 V
5.5 V
4.5 V
5.5 V
5.5 V
5.5 V
4.5 V
5.5 V
4.5 V
5.5 V
5.5 V
5.5 V
5.5 V
5.5 V
I
I
= − 50 mA
OH
5.4
5.4
3.94
4.94
3.7
= − 24 mA
V
OH
V
OH
4.7
{
{
3.85
I
I
= − 50 mA
OH
3.85
= − 75 mA
OH
0.1
0.1
0.1
0.1
0.1
0.1
I
= 50 mA
OL
OL
0.36
0.36
0.5
0.44
0.44
I
= 24 mA
V
OL
V
0.5
{
1.65
I
I
= 50 mA
OL
{
1.65
1
= 75 mA
OL
I
I
V = V
or GND
or GND,
0.1
8
1
mA
mA
I
I
CC
V = V
I = 0
O
160
80
CC
I
CC
One input at 3.4 V,
Other inputs at GND or V
}
5.5 V
5 V
0.9
1
1
mA
pF
DI
CC
CC
C
V = V
CC
or GND
4
i
I
†
‡
Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.
This is the increase in supply current for each input that is at one of the specified TTL voltage levels rather than 0 V or V
.
CC
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Figure 1)
T
A
= 25°C
TYP
8.8
54ACT11521
74ACT11521
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
UNIT
ns
MIN
1.5
1.5
1.5
1.5
MAX
13
MIN
1.5
1.5
1.5
1.5
MAX
15.9
14.6
11.2
10.2
MIN
1.5
1.5
1.5
1.5
MAX
14.7
13.6
10.5
9.7
t
t
t
t
PLH
PHL
PLH
PHL
P = Q
P = Q
P or Q
G
8.2
12
6.7
9.3
8.8
ns
6.8
2−3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001
ꢀ ꢁꢂ ꢃ ꢄ ꢅꢅ ꢀꢆ ꢅ ꢇ ꢈ ꢉ ꢁꢂ ꢃꢄ ꢅꢅ ꢀ ꢆꢅ
ꢊ ꢋꢌ ꢍ ꢄ ꢈꢍ ꢎ ꢏꢐ ꢄ ꢍ ꢄꢑꢈ ꢃꢒ ꢓꢔꢂꢕ ꢂꢄꢒ ꢕꢖ
ꢗ
SCAS023A − D2957, JULY 1978 − REVISED APRIL 1993
operating characteristics, V
= 5 V, T = 25°C
A
CC
PARAMETER
TEST CONDITIONS
= 50 pF, f = 1 MHz
L
TYP
UNIT
pF
C
Power dissipation capacitance
C
40
pd
PARAMETER MEASUREMENT INFORMATION
3 V
0 V
PLH
Input
1.5 V
1.5 V
From Output
Under Test
(see Note B)
t
t
PHL
C
= 50 pF
L
500 Ω
(see Note A)
V
OH
CC
50% V
CC
50% V
Output
V
OL
VOLTAGE WAVEFORMS
LOAD CIRCUIT
NOTES: A.
C includes probe and jig capacitance.
L
B. Input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, Z = 50 Ω, t = 3 ns, t = 3 ns.
O
r
f
C. The outputs are measured one at a time with one input transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
2−4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001
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相关型号：
74ACT11533DW
Bus Driver, ACT Series, 1-Func, 8-Bit, Inverted Output, CMOS, PDSO24, PLASTIC, SO-24
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