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參數資料
| 型號： | MC14585BD |
| 廠商： | MOTOROLA INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | 3-Channel Supervisor With Over-Current Detect For Switch-Mode Power Supplies 14-SOIC -40 to 85 |
| 中文描述： | 4000/14000/40000 SERIES, 4-BIT MAGNITUDE COMPARATOR, TRUE OUTPUT, PDSO16 |
| 封裝： | PLASTIC, SOIC-16 |
| 文件頁數： | 1/6頁 |
| 文件大小： | 185K |
| 代理商： | MC14585BD |
MOTOROLA CMOS LOGIC DATA
Motorola, Inc. 1995
1
MC14585B
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.
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
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
(Voltages Referenced to VSS)
VDD
Vin, Vout
Iin, Iout
DC Supply Voltage
– 0.5 to + 18.0
V
Input or Output Voltage (DC or Transient)
– 0.5 to VDD + 0.5
±
10
V
Input or Output Current (DC or Transient),
per Pin
mA
PD
Tstg
TL
Power Dissipation, per Package
500
mW
Storage Temperature
– 65 to + 150
C
Lead Temperature (8–Second Soldering)
260
C
* Maximum Ratings are those values beyond which damage to the device may occur.
Temperature Derating:
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
TRUTH TABLE
(x = Don’t Care)
Inputs
Outputs
Comparing
Cascading
A3, B3
A3 > B3
A3 = B3
A3 = B3
A3 = B3
A3 = B3
A3 = B3
A3 = B3
A3 = B3
A3 = B3
A3 = B3
A3 = B3
A3 < B3
A2, B2
x
A2 > B2
A2 = B2
A2 = B2
A2 = B2
A2 = B2
A2 = B2
A2 = B2
A2 = B2
A2 = B2
A2 < B2
x
A1, B1
x
x
A1 > B1
A1 = B1
A1 = B1
A1 = B1
A1 = B1
A1 = B1
A1 = B1
A1 < B1
x
x
A0, B0
x
x
x
A0 > B0
A0 = B0
A0 = B0
A0 = B0
A0 = B0
A0 < B0
x
x
x
A < B
x
x
x
x
0
0
1
1
x
x
x
x
A = B
x
x
x
x
0
1
0
1
x
x
x
x
A > B
x
x
x
x
x
x
x
x
x
x
x
x
A < B
0
0
0
0
0
0
1
1
1
1
1
1
A = B
0
0
0
0
0
1
0
1
0
0
0
0
A > B
1
1
1
1
1
0
0
0
0
0
0
0
SEMICONDUCTOR TECHNICAL DATA
REV 3
1/94
L SUFFIX
CERAMIC
CASE 620
ORDERING INFORMATION
MC14XXXBCP
MC14XXXBCL
MC14XXXBD
TA = – 55
°
to 125
°
C for all packages.
Plastic
Ceramic
SOIC
P SUFFIX
PLASTIC
CASE 648
D SUFFIX
SOIC
CASE 751B
BLOCK DIAGRAM
14
15
1
2
9
7
11
10
5
6
4
13
3
12
VDD = PIN 16
VSS = PIN 8
(A > B)in
(A = B)in
(A < B)in
A0
B0
A1
B1
A2
B2
A3
B3
(A > B)out
(A = B)out
(A < B)out
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