933740020602 [NXP]
IC F/FAST SERIES, 4-BIT MAGNITUDE COMPARATOR, TRUE OUTPUT, PDIP16, 0.300 INCH, PLASTIC, SOT-38-4, DIP-16, Arithmetic Circuit;
| 型号： | 933740020602 |
| 厂家： | 
NXP |
| 描述： | IC F/FAST SERIES, 4-BIT MAGNITUDE COMPARATOR, TRUE OUTPUT, PDIP16, 0.300 INCH, PLASTIC, SOT-38-4, DIP-16, Arithmetic Circuit 光电二极管 输出元件 逻辑集成电路 |
| 文件： | 总10页 (文件大小：86K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
74F85
4-bit magnitude comparator
Product specification
IC15 Data Handbook
1994 Sep 27
Philip s Se m ic ond uc tors
Philips Semiconductors
Product specification
4-bit magnitude comparator
74F85
FEATURES
PIN CONFIGURATION
• High-impedance NPN base inputs for reduced loading
(20µA in High and Low states)
B3
1
2
3
4
5
16
V
CC
15 A3
14 B2
13 A2
12 A1
11 B1
10 A0
I
I
I
• Magnitude comparison of any binary words
• Serial or parallel expansion without extra gating
A<B
A=B
A>B
A>B
DESCRIPTION
The 74F85 is a 4-bit magnitude comparator that can be expanded to
almost any length. It compares two 4-bit binary, BCD, or other
monotonic codes and presents the three possible magnitude results
at the outputs. The 4-bit inputs are weighted (A0–A3) and (B0–B3)
where A3 and B3 are the most significant bits. The operation of the
74F85 is described in the Function Table, showing all possible logic
conditions. The upper part of the table describes the normal
operation under all conditions that will occur in a single device or in
a series expansion scheme. In the upper part of the table the three
outputs are mutually exclusive. In the lower part of the table, the
outputs reflect the feed-forward conditions that exist in the parallel
A=B
A<B
6
7
8
GND
9
B0
SF00075
TYPE
TYPICAL
PROPAGATION
DELAY
TYPICAL
SUPPLY CURRENT
(TOTAL)
expansion scheme. The expansion inputs I
, and I and I
A=B A<B
74F85
7.0ns
40mA
A>B
are the least significant bit positions. When used for series
expansion, the A>B, A=B and A<B outputs of the lease significant
word are connected to the corresponding I , I and I inputs
ORDERING INFORMATION
A>B A=B
A<B
COMMERCIAL RANGE
= 5V ±10%,
of the next higher stage. Stages can be added in this manner to any
length, but a propagation delay penalty of about 15ns is added with
each additional stage. For proper operation, the expansion inputs of
V
DESCRIPTION
PKG DWG #
CC
T
amb
= 0°C to +70°C
the least significant word should be tied as follows: I
= Low,
A>B
16-pin plastic DIP
16-pin plastic SO
N74F85N
SOT38-4
I
= High, and I
= Low.
A<B
A=B
N74F85D
SOT162-1
INPUT AND OUTPUT LOADING AND FAN OUT TABLE
PINS
A0–A3
B0–B3
DESCRIPTION
Comparing inputs
74F (U.L.) HIGH/LOW
1.0/0.033
LOAD VALUE HIGH/LOW
20µA/20µA
Comparing inputs
1.0/0.033
20µA/20µA
I
, I
, I
Expansion inputs (active High)
Data outputs (active High)
1.0/0.033
20µA/20µA
A<B A=B A>B
A<B, A=B, A>B
50/33
1.0mA/20mA
NOTE: One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state.
LOGIC SYMBOL
IEC/IEEE SYMBOL
COMP
10
12
13
A2
15
A3
9
11
14
B2
1
10
12
13
15
9
0
P
A0
A1
B0
B1
B3
3
0
7
2
I
I
A<B
P<Q
6
11
14
1
P=Q
3
4
A=B
A>B
Q
5
P>Q
I
3
<
=
>
A>B A=B A<B
2
3
4
V
= Pin 16
CC
5
6
7
GND = Pin 8
SF00076
SF00077
2
September 27, 1994
853–0055 13903
Philips Semiconductors
Product specification
4-bit magnitude comparator
74F85
LOGIC DIAGRAM
15
A3
1
B3
5
6
7
A>B
13
A2
14
B2
2
I
A<B
3
I
A=B
A=B
4
I
A>B
12
A1
11
B1
A<B
10
A0
9
B0
V
= Pin 16
CC
GND = Pin 8
SF00078
FUNCTION TABLE
COMPARING INPUTS
EXPANSION INPUTS
OUTPUTS
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
A3=B3
A3=B3
A2,B2
X
A1,B1
X
A0,B0
X
I
I
I
A>B
H
L
A<B
L
A=B
L
A>B
A<B
A=B
X
X
X
X
X
X
X
X
X
X
X
X
X
H
L
X
X
X
X
X
X
X
L
X
X
X
X
X
X
X
L
H
L
L
A2>B2
A2<B2
A2=B2
A2=B2
A2=B2
A2=B2
A2=B2
A2=B2
A2=B2
A2=B2
A2=B2
A2=B2
X
X
H
L
L
X
X
H
L
L
A1>B1
A1<B1
A1=B1
A1=B1
A1=B1
A1=B1
A1=B1
A1=B1
A1=B1
A1=B1
X
H
L
L
X
H
L
L
A0>B0
A0<B0
A0=B0
A0=B0
A0=B0
A0=B0
A0=B0
A0=B0
H
L
L
H
L
L
H
L
L
H
L
L
H
L
L
L
H
H
L
L
H
H
L
X
H
L
X
H
L
L
L
L
L
L
H
H
L
H = High voltage level
L = Low voltage level
X = Don’t care
3
September 27, 1994
Philips Semiconductors
Product specification
4-bit magnitude comparator
74F85
APPLICATION
The parallel expansion scheme shown in Figure 1 demonstrates the
most efficient general use of these comparators. The expansion
inputs can be used as a fifth input bit position except on the least
significant device, which must be connected as in the serial scheme.
INPUTS
(LSB) B23
A23
B3
A3
B2
A2
B1
A1
B0
A0
The expansion inputs used by labeling I
as an “A” input, I
as
A>B
A<B
B22
a “B” input and setting I
= Low. The 74F85 can be used as a 5-bit
A=B
A22
comparator only when the outputs are used to drive the (A0–A3) and
(B0–B3) inputs of another 74F85 device. The parallel technique can
be expanded to any number of bits as shown in Table 1.
B21
A<B
A=B
A>B
A21
NC
NC
NC
NC
B20
A20
B19
I
A<B
Table 1.
L
L
L
L
I
A=B
A19
I
A>B
NUMBER OF
PACKAGES
TYPICAL SPEEDS
74F
WORD LENGTH
B18
A18
B17
A17
B16
A16
B15
A15
B14
B3
A3
B2
A2
B1
A1
B0
A0
1–4 bits
5–24 bits
1
12ns
22ns
34ns
2–6
8–31
A<B
A=B
A>B
25–120 bits
I
A<B
I
A=B
A14
I
A>B
B13
A13
B12
A12
B11
A11
B10
A10
B9
B3
A3
B2
A2
B1
A1
B0
A0
B3
A3
B2
A2
OUTPUTS
A<B
A=B
A>B
B1
A<B
A=B
A>B
A1
B0
A0
A<B
A=B
A>B
I
A<B
I
A=B
A9
I
A>B
B8
A8
B7
A7
B6
A6
B5
A5
B4
B3
A3
B2
A2
B1
A1
B0
A0
A<B
A=B
A>B
I
A<B
I
A=B
A4
I
A>B
B3
B3
A3
B2
A2
B1
A1
B0
A0
A3
B2
A2
B1
A1
A<B
A=B
A>B
(LSB) B0
A0
L
I
A<B
H
I
A=B
I
L
A>B
SF00079
Figure 1. Comparison of Two 24-Bit Words
4
September 27, 1994
Philips Semiconductors
Product specification
4-bit magnitude comparator
74F85
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limits set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free-air temperature range.)
SYMBOL
PARAMETER
RATING
–0.5 to +7.0
–0.5 to +7.0
–30 to +5
UNIT
V
V
Supply voltage
Input voltage
Input current
CC
IN
V
V
I
mA
V
IN
V
Voltage applied to output in High output state
Current applied to output in Low output state
Operating free-air temperature range
Storage temperature range
–0.5 to V
40
OUT
OUT
CC
I
mA
°C
°C
T
amb
0 to +70
T
stg
–65 to +150
RECOMMENDED OPERATING CONDITIONS
LIMITS
SYMBOL
PARAMETER
UNIT
MIN
4.5
NOM
MAX
V
Supply voltage
5.0
5.5
V
V
CC
IH
IL
V
V
High-level input voltage
Low-level input voltage
Input clamp current
2.0
0.8
–18
–1
V
I
I
I
mA
mA
mA
°C
IK
High-level output current
Low-level output current
OH
OL
20
T
amb
Operating free-air temperature range
0
+70
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
LIMITS
1
SYMBOL
PARAMETER
High-level output voltage
Low-level output voltage
TEST CONDITIONS
UNIT
V
2
MIN
TYP
MAX
V
V
V
V
V
V
= MIN, V = MAX
±10%V
2.5
2.7
CC
IL
CC
V
OH
= MIN, I = MAX
±5%V
3.4
IH
OH
CC
= MIN, V = MAX
±10%V
0.30
0.30
0.50
0.50
–1.2
100
CC
IL
CC
CC
V
V
V
OL
= MIN, I = MAX
±5%V
IH
OL
Input clamp voltage
= MIN, I = I
IK
–0.73
V
IK
CC
CC
I
I
I
I
I
Input current at maximum input voltage
= 0.0V, V = 7.0V
µA
I
I
High-level input current
Low-level input current
V
CC
V
CC
V
CC
= MAX, V = 2.7V
20
–20
–150
50
µA
µA
IH
IL
I
= MAX, V = 0.5V
I
3
Short-circuit output current
= MAX
–60
mA
OS
I
V
IN
= GND
36
40
CCH
I
Supply current (total)
V
CC
= MAX
mA
CC
An = Bn = I
= GND,
= 4.5V
A=B
I
54
CCL
I
= I
A>B A<B
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type.
2. All typical values are at V = 5V, T = 25°C.
CC
amb
3. Not more than one output should be shorted at a time. For testing I , the use of high-speed test apparatus and/or sample-and-hold
OS
techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting
of a High output may raise the chip temperature well above normal and thereby cause invalid readings in other parameter tests. In any
sequence of parameter tests, I tests should be performed last.
OS
5
September 27, 1994
Philips Semiconductors
Product specification
4-bit magnitude comparator
74F85
AC ELECTRICAL CHARACTERISTICS
LIMITS
V
= +5.0V
= +25°C
V
= +5.0V ± 10%
= 0°C to +70°C
CC
CC
TEST
CONDITION
SYMBOL
PARAMETER
T
amb
T
amb
UNIT
C = 50pF, R = 500Ω
C = 50pF, R = 500Ω
L L
L
L
MIN
TYP
MAX
MIN
MAX
t
t
Propagation delay
A or B to A<B, A>B
Waveform 1
3 logic levels
6.0
7.0
8.5
9.5
11.0
14.0
5.5
6.5
13.0
15.5
PLH
PHL
ns
ns
ns
ns
ns
t
t
Propagation delay
A or B to A=B
Waveform 1
4 logic levels
6.5
7.0
9.0
9.5
11.5
14.0
6.0
6.5
14.0
14.5
PLH
PHL
t
t
Propagation delay
Waveform 1
1 logic level
3.0
3.0
5.0
6.0
7.5
9.0
2.5
2.5
9.0
10.0
PLH
PHL
I
and I
to A>B
A<B
A=B
t
t
Propagation delay
to A=B
Waveform 1
2 logic levels
2.5
3.5
4.5
7.5
7.0
10.0
2.0
2.5
9.0
12.0
PLH
PHL
I
A=B
t
t
Propagation delay
and I to A<B
Waveform 1
1 logic level
3.0
3.0
5.0
6.0
8.0
9.0
3.0
2.0
9.5
9.5
PLH
PHL
I
A>B
A=B
AC WAVEFORMS
V
V
V
M
IN
M
t
t
PHL
PLH
V
V
V
M
OUT
M
SF00080
Waveform 1. Propagation Delay Input to Output
NOTE:
For all waveforms, V = 1.5V.
M
TEST CIRCUIT AND WAVEFORMS
t
AMP (V)
V
w
CC
90%
90%
NEGATIVE
PULSE
V
V
M
M
10%
10%
V
V
OUT
IN
0V
PULSE
GENERATOR
D.U.T.
t
t )
t )
t
t )
THL ( f
TLH ( r
R
C
R
L
t
T
L
t
t )
TLH ( r
THL ( f
AMP (V)
0V
90%
M
90%
POSITIVE
PULSE
V
V
M
10%
10%
Test Circuit for Totem-Pole Outputs
DEFINITIONS:
t
w
Input Pulse Definition
INPUT PULSE REQUIREMENTS
R
L
C
L
R
T
=
=
=
Load resistor;
see AC ELECTRICAL CHARACTERISTICS for value.
Load capacitance includes jig and probe capacitance;
see AC ELECTRICAL CHARACTERISTICS for value.
family
V
rep. rate
t
w
t
t
THL
amplitude
3.0V
M
TLH
Termination resistance should be equal to Z
pulse generators.
of
OUT
2.5ns 2.5ns
74F
1.5V
1MHz
500ns
SF00006
6
September 27, 1994
Philips Semiconductors
Product specification
4-bit magnitude comparator
74F85
DIP16: plastic dual in-line package; 16 leads (300 mil)
SOT38-4
7
1994 Sep 27
Philips Semiconductors
Product specification
4-bit magnitude comparator
74F85
SO16: plastic small outline package; 16 leads; body width 7.5 mm
SOT162-1
8
1994 Sep 27
Philips Semiconductors
Product specification
4-bit magnitude comparator
74F85
NOTES
9
1994 Sep 27
Philips Semiconductors
Product specification
4-bit magnitude comparator
74F85
Data sheet status
[1]
Data sheet
status
Product
status
Definition
Objective
specification
Development
This data sheet contains the design target or goal specifications for product development.
Specification may change in any manner without notice.
Preliminary
specification
Qualification
This data sheet contains preliminary data, and supplementary data will be published at a later date.
Philips Semiconductors reserves the right to make chages at any time without notice in order to
improve design and supply the best possible product.
Product
specification
Production
This data sheet contains final specifications. Philips Semiconductors reserves the right to make
changes at any time without notice in order to improve design and supply the best possible product.
[1] Please consult the most recently issued datasheet before initiating or completing a design.
Definitions
Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For
detailed information see the relevant data sheet or data handbook.
Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one
or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or
at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended
periods may affect device reliability.
Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips
Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or
modification.
Disclaimers
Life support — These products are not designed for use in life support appliances, devices or systems where malfunction of these products can
reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications
do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.
Righttomakechanges—PhilipsSemiconductorsreservestherighttomakechanges, withoutnotice, intheproducts, includingcircuits,standard
cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no
responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless
otherwise specified.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Copyright Philips Electronics North America Corporation 1998
All rights reserved. Printed in U.S.A.
Sunnyvale, California 94088–3409
Telephone 800-234-7381
print code
Date of release: 10-98
9397-750-05067
Document order number:
Philips
Semiconductors
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