MC14585BD [MOTOROLA]
4-Bit Magnitude Comparator; 4位数值比较器
| 型号： | MC14585BD |
| 厂家： | 
MOTOROLA |
| 描述： | 4-Bit Magnitude Comparator |
| 文件： | 总6页 (文件大小：189K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SEMICONDUCTOR TECHNICAL DATA
The MC14585B 4–Bit Magnitude Comparator is constructed with comple-
mentary MOS (CMOS) enhancement mode devices. The circuit has eight
comparing inputs (A3, B3, A2, B2, A1, B1, A0, B0), three cascading inputs
(A < B, A = B, and A > B), and three outputs (A < B, A = B, and A > B). This
device compares two 4–bit words (A and B) and determines whether they
are “less than”, “equal to”, or “greater than” by a high level on the appropriate
output. For words greater than 4–bits, units can be cascaded by connecting
outputs (A > B), (A < B), and (A = B) to the corresponding inputs of the next
significant comparator. Inputs (A < B), (A = B), and (A > B) on the least
significant (first) comparator are connected to a low, a high, and a low,
respectively.
L SUFFIX
CERAMIC
CASE 620
P SUFFIX
PLASTIC
CASE 648
D SUFFIX
SOIC
CASE 751B
Applications include logic in CPU’s, correction and/or detection of
instrumentation conditions, comparator in testers, converters, and controls.
•
•
•
•
•
Diode Protection on All Inputs
Expandable
ORDERING INFORMATION
MC14XXXBCP
MC14XXXBCL
MC14XXXBD
Plastic
Ceramic
SOIC
Applicable to Binary or 8421–BCD Code
Supply Voltage Range = 3.0 Vdc to 18 Vdc
Capable of Driving Two Low–power TTL Loads or One Low–power
Schottky TTL Load over the Rated Temperature Range
Can be Cascaded – See Fig. 3
T
= – 55° to 125°C for all packages.
A
•
MAXIMUM RATINGS* (Voltages Referenced to V
)
BLOCK DIAGRAM
SS
Symbol
Parameter
DC Supply Voltage
Value
Unit
V
(A > B)
in
4
6
V
DD
– 0.5 to + 18.0
(A = B)
(A < B)
A0
in
in
V , V
Input or Output Voltage (DC or Transient)
– 0.5 to V
DD
+ 0.5
V
(A > B)
(A = B)
(A < B)
13
3
5
in out
out
out
out
10
11
7
I , I
in out
Input or Output Current (DC or Transient),
per Pin
± 10
mA
B0
A1
P
D
Power Dissipation, per Package†
Storage Temperature
500
– 65 to + 150
260
mW
C
B1
9
A2
2
T
stg
B2
12
1
T
L
Lead Temperature (8–Second Soldering)
C
A3
15
14
* Maximum Ratings are those values beyond which damage to the device may occur.
†Temperature Derating:
B3
Plastic “P and D/DW” Packages: – 7.0 mW/ C From 65 C To 125 C
Ceramic “L” Packages: – 12 mW/ C From 100 C To 125 C
V
V
= PIN 16
= PIN 8
DD
SS
TRUTH TABLE (x = Don’t Care)
Inputs
Outputs
A0, B0 A < B A = B A > B A < B A = B A > B
Comparing
A2, B2 A1, B1
Cascading
A3, B3
A3 > B3
A3 = B3 A2 > B2
A3 = B3 A2 = B2 A1 > B1
A3 = B3 A2 = B2 A1 = B1 A0 > B0
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
0
0
0
0
0
0
0
0
1
1
1
1
A3 = B3 A2 = B2 A1 = B1 A0 = B0
A3 = B3 A2 = B2 A1 = B1 A0 = B0
A3 = B3 A2 = B2 A1 = B1 A0 = B0
A3 = B3 A2 = B2 A1 = B1 A0 = B0
0
0
1
1
0
1
0
1
x
x
x
x
0
0
1
1
0
1
0
1
1
0
0
0
A3 = B3 A2 = B2 A1 = B1 A0 < B0
x
x
x
x
x
x
x
x
x
1
1
1
0
0
0
0
0
0
A3 = B3 A2 = B2 A1 < B1
x
x
A3 = B3 A2 < B2
A3 < B3
x
x
x
x
x
x
x
1
0
0
REV 3
1/94
Motorola, Inc. 1995
ELECTRICAL CHARACTERISTICS (Voltages Referenced to V
)
SS
– 55 C
25 C
Typ #
125 C
V
Vdc
DD
Characteristic
Output Voltage
Symbol
Unit
Min
Max
Min
Max
Min
Max
“0” Level
“1” Level
“0” Level
V
OL
5.0
10
15
—
—
—
0.05
0.05
0.05
—
—
—
0
0
0
0.05
0.05
0.05
—
—
—
0.05
0.05
0.05
Vdc
V
in
= V
DD
or 0
V
OH
5.0
10
15
4.95
9.95
14.95
—
—
—
4.95
9.95
14.95
5.0
10
15
—
—
—
4.95
9.95
14.95
—
—
—
Vdc
Vdc
V
in
= 0 or V
DD
Input Voltage
(V = 4.5 or 0.5 Vdc)
V
IL
5.0
10
15
—
—
—
1.5
3.0
4.0
—
—
—
2.25
4.50
6.75
1.5
3.0
4.0
—
—
—
1.5
3.0
4.0
O
(V = 9.0 or 1.0 Vdc)
O
(V = 13.5 or 1.5 Vdc)
O
“1” Level
V
IH
Vdc
(V = 0.5 or 4.5 Vdc)
5.0
10
15
3.5
7.0
11
—
—
—
3.5
7.0
11
2.75
5.50
8.25
—
—
—
3.5
7.0
11
—
—
—
O
(V = 1.0 or 9.0 Vdc)
O
(V = 1.5 or 13.5 Vdc)
O
Output Drive Current
I
mAdc
OH
(V
(V
(V
(V
= 2.5 Vdc)
= 4.6 Vdc)
= 9.5 Vdc)
= 13.5 Vdc)
Source
Sink
5.0
5.0
10
– 3.0
– 0.64
– 1.6
– 4.2
—
—
—
—
– 2.4
– 0.51
– 1.3
– 3.4
– 4.2
– 0.88
– 2.25
– 8.8
—
—
—
—
– 1.7
– 0.36
– 0.9
– 2.4
—
—
—
—
OH
OH
OH
OH
15
(V
OL
(V
OL
(V
OL
= 0.4 Vdc)
= 0.5 Vdc)
= 1.5 Vdc)
I
5.0
10
15
0.64
1.6
4.2
—
—
—
0.51
1.3
3.4
0.88
2.25
8.8
—
—
—
0.36
0.9
2.4
—
—
—
mAdc
OL
Input Current
I
15
—
—
—
±0.1
—
—
±0.00001
±0.1
—
—
±1.0
µAdc
in
Input Capacitance
C
—
5.0
7.5
—
pF
in
(V = 0)
in
Quiescent Current
(Per Package)
I
5.0
10
15
—
—
—
5.0
10
20
—
—
—
0.005
0.010
0.015
5.0
10
20
—
—
—
150
300
600
µAdc
µAdc
DD
Total Supply Current**†
I
T
5.0
10
15
I
T
I
T
I
T
= (0.6 µA/kHz) f + I
= (1.2 µA/kHz) f + I
= (1.8 µA/kHz) f + I
DD
DD
DD
(Dynamic plus Quiescent,
Per Package)
(C = 50 pF on all outputs, all
L
buffers switching)
#Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance.
**The formulas given are for the typical characteristics only at 25 C.
†To calculate total supply current at loads other than 50 pF:
I (C ) = I (50 pF) + (C – 50) Vfk
T
L
T
L
where: I is in µA (per package), C in pF, V = (V
– V ) in volts, f in kHz is input frequency, and k = 0.001.
SS
T
L
DD
PIN ASSIGNMENT
B2
A2
1
2
16
15
V
DD
A3
B3
(A
(A = B)
3
4
5
6
7
8
14
13
12
11
10
9
out
(A
(A
B)
B)
B)
in
out
B)
(A
in
out
(A = B)
B0
A0
B1
in
A1
SS
V
MC14585B
2
MOTOROLA CMOS LOGIC DATA
SWITCHING CHARACTERISTICS* (C = 50 pF, T = 25 C)
L
A
Characteristic
Symbol
V
DD
Min
Typ #
Max
Unit
Output Rise and Fall Time
t
t
,
ns
TLH
t
t
t
, t
= (1.5 ns/pF) C + 25 ns
= (0.75 ns/pF) C + 12.5 ns
L
= (0.55 ns/pF) C + 9.5 ns
5.0
10
15
—
—
—
100
50
40
200
100
80
TLH THL
L
THL
, t
TLH THL
, t
TLH THL
L
Turn–On, Turn–Off Delay Time
t
t
,
ns
PLH
t
t
t
, t
= (1.7 ns/pF) C + 345 ns
= (0.66 ns/pF) C + 147 ns
= (0.5 ns/pF) C + 105 ns
L
5.0
10
15
—
—
—
430
180
130
860
360
260
PLH PHL
L
PHL
, t
PLH PHL
L
, t
PLH PHL
* The formulas given are for the typical characteristics only at 25 C.
#Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance.
20 ns
20 ns
V
DD
A3
V
V
SS
1
2f
DD
B3
V
V
SS
20 ns
B0
20 ns
OH
V
DD
(A > B)
(A = B)
(A < B)
out
90%
50%
10%
V
V
OL
V
V
OH
SS
t
t
PHL
PLH
out
out
V
V
OL
OH
90%
50%
10%
OH
(A < B)
out
V
OL
V
OL
t
t
THL
TLH
Inputs (A>B) and (A=B) high, and inputs B2, A2, B1,
A1, B0, A0 and (A<B) low.
f in respect to a system clock.
Inputs (A>B) and (A=B) high, and inputs B3, A3, B2,
A2, B1, A1, A0, and (A<B) low.
Figure 1. Dynamic Power Dissipation
Signal Waveforms
Figure 2. Dynamic Signal Waveforms
This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However,
precautionsmust be taken to avoid applications of any voltage higher than maximum rated voltages to this high-impedance
circuit. For proper operation, V and V
Unused inputs must always be tied to an appropriate logic voltage level (e.g., either V
be left open.
should be constrained to the range V
≤ (V or V ) ≤ V
.
in out
SS
in
out
DD
or V ). Unused outputs must
SS
DD
MOTOROLA CMOS LOGIC DATA
MC14585B
3
WORD
B = B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
WORD
A =
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
V
V
V
SS DD SS
B3 A3 B2 A2 B1 A1 B0 A0
OUTPUT
MC14585B
INPUTS
MC14585B
MC14585B
...
WORD B = B11, B10, , B0.
...
WORD A = A11, A10, , A0.
OUTPUTS
Figure 3. Cascading Comparators
LOGIC DIAGRAM
15
A3
14
2
B3
A2
1
7
B2
A1
12
(A < B)
out
9
B1
A0
10
11
5
B0
(A < B)
in
3
(A = B)
(A > B)
out
6
4
(A = B)
in
in
13
out
(A > B)
MC14585B
4
MOTOROLA CMOS LOGIC DATA
OUTLINE DIMENSIONS
L SUFFIX
CERAMIC DIP PACKAGE
CASE 620–10
ISSUE V
–A–
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.
4. DIMENSION F MAY NARROW TO 0.76 (0.030)
WHERE THE LEAD ENTERS THE CERAMIC
BODY.
16
1
9
8
–B–
C
L
INCHES
MILLIMETERS
DIM
A
B
C
D
MIN
MAX
0.785
0.295
0.200
0.020
MIN
19.05
6.10
–––
MAX
19.93
7.49
5.08
0.50
0.750
0.240
–––
–T–
SEATING
PLANE
0.015
0.39
K
N
E
0.050 BSC
1.27 BSC
F
0.055
0.065
1.40
1.65
G
H
K
L
M
N
0.100 BSC
2.54 BSC
M
E
0.008
0.125
0.015
0.170
0.21
3.18
0.38
4.31
F
J
16 PL
0.25 (0.010)
G
0.300 BSC
7.62 BSC
M
S
T
B
0
15
0
15
D 16 PL
0.25 (0.010)
0.020
0.040
0.51
1.01
M
S
T
A
P SUFFIX
PLASTIC DIP PACKAGE
CASE 648–08
ISSUE R
NOTES:
–A–
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION L TO CENTER OF LEADS WHEN
FORMED PARALLEL.
4. DIMENSION B DOES NOT INCLUDE MOLD FLASH.
5. ROUNDED CORNERS OPTIONAL.
16
1
9
8
B
S
INCHES
MILLIMETERS
DIM
A
B
C
D
F
MIN
MAX
0.770
0.270
0.175
0.021
0.70
MIN
18.80
6.35
3.69
0.39
1.02
MAX
19.55
6.85
4.44
0.53
1.77
F
0.740
0.250
0.145
0.015
0.040
C
L
SEATING
–T–
G
H
J
K
L
0.100 BSC
0.050 BSC
2.54 BSC
1.27 BSC
PLANE
K
M
0.008
0.015
0.130
0.305
10
0.21
0.38
3.30
7.74
10
H
J
0.110
0.295
0
2.80
7.50
0
G
D 16 PL
0.25 (0.010)
M
S
0.020
0.040
0.51
1.01
M
M
T
A
MOTOROLA CMOS LOGIC DATA
MC14585B
5
OUTLINE DIMENSIONS
D SUFFIX
PLASTIC SOIC PACKAGE
CASE 751B–05
ISSUE J
–A–
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
16
1
9
8
–B–
P 8 PL
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
M
S
0.25 (0.010)
B
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
G
MILLIMETERS
INCHES
DIM
A
B
C
D
MIN
9.80
3.80
1.35
0.35
0.40
MAX
10.00
4.00
1.75
0.49
1.25
MIN
MAX
0.393
0.157
0.068
0.019
0.049
F
0.386
0.150
0.054
0.014
0.016
R X 45
K
C
F
G
J
K
M
P
R
1.27 BSC
0.050 BSC
–T–
SEATING
PLANE
0.19
0.10
0
0.25
0.25
7
0.008
0.004
0
0.009
0.009
7
J
M
D
16 PL
5.80
0.25
6.20
0.50
0.229
0.010
0.244
0.019
M
S
S
0.25 (0.010)
T
B
A
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the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit,
and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided
in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters,
including “Typicals” must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent
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MC14585B/D
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