74HCT85D,653 NXP Semiconductors, 74HCT85D,653 Datasheet - Page 2
![IC COMPARATOR MAGNITUDE 16SOIC](/photos/6/52/65286/16-soic_sot109-1_sml.jpg)
74HCT85D,653
Manufacturer Part Number
74HCT85D,653
Description
IC COMPARATOR MAGNITUDE 16SOIC
Manufacturer
NXP Semiconductors
Series
74HCTr
Type
Magnitude Comparatorr
Datasheet
1.74HC85D652.pdf
(9 pages)
Specifications of 74HCT85D,653
Package / Case
16-SOIC (3.9mm Width)
Number Of Bits
4
Delay Time - Propagation
26ns
Voltage - Supply
4.5 V ~ 5.5 V
Product
Digital Comparators
Input Bias Current (max)
0.008 mA
Supply Voltage (max)
5.5 V
Supply Voltage (min)
4.5 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Logic Family
HCT
Technology
CMOS
High Level Output Current
-4mA
Low Level Output Current
4mA
Output Function
A<B, A=B, A>B
Package Type
SO
Quiescent Current
8uA
Mounting
Surface Mount
Pin Count
16
Polarity
Non-Inverting
Abs. Propagation Delay Time
66ns
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
4.5V
Operating Temperature (max)
125C
Operating Temperature (min)
-40C
Operating Temperature Classification
Automotive
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Supply
-
Operating Temperature
-
Lead Free Status / Rohs Status
Compliant
Other names
74HCT85D-T
74HCT85D-T
933715430653
74HCT85D-T
933715430653
Philips Semiconductors
FEATURES
GENERAL DESCRIPTION
The 74HC/HCT85 are high-speed Si-gate CMOS devices
and are pin compatible with low power Schottky TTL
(LSTTL). They are specified in compliance with JEDEC
standard no. 7A.
The 74HC/HCT85 are 4-bit magnitude comparators that
can be expanded to almost any length. They perform
comparison of two 4-bit binary, BCD or other monotonic
codes and present the three possible magnitude results at
the outputs (Q
QUICK REFERENCE DATA
GND = 0 V; T
Notes
1. C
2. For HC the condition is V
ORDERING INFORMATION
See
December 1990
t
C
C
PHL/
SYMBOL
Serial or parallel expansion without extra gating
Magnitude comparison of any binary words
Output capability: standard
I
4-bit magnitude comparator
I
PD
CC
f
f
C
V
For HCT the condition is V
i
o
“74HC/HCT/HCU/HCMOS Logic Package Information”
CC
PD
= input frequency in MHz
L
t
category: MSI
= output frequency in MHz
(C
PLH
= output load capacitance in pF
P
= supply voltage in V
is used to determine the dynamic power dissipation (P
L
D
= C
V
amb
CC
A B
PD
propagation delay
A
A
I
I
input capacitance
power dissipation capacitance per package
A B,
A=B
n
n
2
, B
, B
, Q
= 25 C; t
, I
to Q
V
f
n
n
o
A=B
A=B
CC
) = sum of outputs
to Q
to Q
2
A=B
, I
and Q
A B
A=B
A B
f
r
i
= t
, Q
to Q
I
I
A B
f
PARAMETER
= GND to V
= GND to V
A B
= 6 ns
(C
). The 4-bit inputs are
A B
L
, Q
V
CC
A B
2
CC
CC
f
o
) where:
1.5 V
2
.
weighted (A
most significant bits.
The operation of the “85” 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 expansion scheme.
For proper compare operation the expander inputs (I
I
connected as follows: I
I
For words greater than 4-bits, units can be cascaded by
connecting outputs Q
corresponding inputs of the significant comparator.
A=B
A=B
D
C
notes 1 and 2
in W):
L
and I
= HIGH.
= 15 pF; V
CONDITIONS
A B
0
) to the least significant position must be
to A
CC
3
and B
= 5 V
A B
A B
, Q
0
to B
= I
A
A B
3
), where A
20
18
15
11
3.5
18
and Q
= = LOW and
HC
TYPICAL
Product specification
74HC/HCT85
A=B
22
20
15
15
3.5
20
HCT
3
to the
and B
ns
ns
ns
ns
pF
pF
3
UNIT
are the
A B
,