• Significant Power Reduction Compared to LSTTL
Logic ICs
• HC Types
- 2V to 6V Operation
- High NoiseImmunity: N
V
= 5V
CC
• HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
V
= 0.8V (Max), VIH = 2V (Min)
IL
- CMOS Input Compatibility, I
= 30%, NIH= 30%of VCCat
IL
≤ 1µA at VOL, V
l
o
C to 125oC
Pinout
CD54HC85, CD54HCT85 (CERDIP)
CD74HC85 (PDIP, SOIC, SOP, TSSOP)
CD74HCT85 (PDIP, SOIC)
TOP VIEW
16
B3
(A < B) IN
(A = B) IN
(A > B) IN
(A > B) OUT
(A = B) OUT
(A < B) OUT
GND
1
2
3
4
5
6
7
8
V
CC
15
A3
14
B2
13
A2
12
A1
B1
11
10
A0
9
B0
OH
4-Bit Magnitude Comparator
Description
The ’HC85 and ’HCT85 are high speed magnitude
comparators that use silicon-gate CMOS technology to
achieve operating speeds similar to LSTTL with the low
power consumption of standard CMOS integrated circuits.
These 4-bit devices compare two binary, BCD, or other
monotonic codes and present the three possible magnitude
results at the outputs (A > B, A < B, and A = B). The 4-bit
input words are weighted (A0 to A3 and B0 to B3), where A3
and B
are the most significant bits.
3
The devices are expandable without external gating, in both
serial and parallel fashion. The upper part of the truth table
indicates operation using a single device or devices in a
serially expanded application. The parallel expansion
scheme is described by the last three entries in the truth
table.
Ordering Information
TEMP. RANGE
PART NUMBER
CD54HC85F3A-55 to 12516 Ld CERDIP
CD54HCT85F3A-55 to 12516 Ld CERDIP
CD74HC85E-55 to 12516 Ld PDIP
CD74HC85M-55 to 12516 Ld SOIC
CD74HC85MT-55 to 12516 Ld SOIC
CD74HC85M96-55 to 12516 Ld SOIC
CD74HC85NSR-55 to 12516 Ld SOP
CD74HC85PW-55 to 12516 Ld TSSOP
CD74HC85PWR-55 to 12516 Ld TSSOP
CD74HC85PWT-55 to 12516 Ld TSSOP
CD74HCT85E-55 to 12516 Ld PDIP
CD74HCT85M-55 to 12516 Ld SOIC
CD74HCT85MT-55 to 12516 Ld SOIC
CD74HCT85M96-55 to 12516 Ld SOIC
(oC)PACKAGE
NOTE: When ordering, use the entire part number. The suffixes 96
and R denote tape and reel. The suffix T denotes a small-quantity
reel of 250.
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1. The package thermal impedance is calculated in accordance with JESD 51-7.
Propagation Delay,
An, Bn to (A > B) OUT,
(A < B) OUT
An, Bn to (A = B) OUTt
t
PLH,tPHLCL
PLH,tPHLCL
= 50pF4.5--37-46-56ns
CL= 15pF5-15-----ns
= 50pF4.5--40-50-60ns
CL= 15pF5-17-----ns
(A > B) IN, (A < B) IN, (A = B) IN
to (A > B) OUT, (A < B) OUT
(A > B) IN to (A = B) OUTt
t
PLH,tPHLCL
PLH,tPHLCL
= 50pF4.5--30-38-45ns
CL= 15pF5-12-----ns
= 50pF4.5--31-39-47ns
CL= 15pF5-13-----ns
Output Transition Times
t
TLH
, t
THLCL
= 50pF4.5--15-19-22ns
(Figure 1)
Power Dissipation Capacitance
C
-5-26-----pF
PD
(Notes 3, 4)
Input CapacitanceC
IN
----10-10-10pF
NOTES:
3. CPD is used to determine the dynamic power consumption, per gate/package.
4. PD = V
2
fi(CPD + CL) where fi = Input Frequency, CL = Output Load Capacitance, VCC = Supply Voltage.
CC
25oC
-40oC TO
85oC
-55oC TO
125oC
UNITSMINTYPMAXMINMAXMINMAX
Test Circuits and Waveforms
tr = 6nstf = 6ns
V
t
CC
GND
TLH
t
PHL
90%
50%
10%
t
90%
50%
10%
PLH
INPUT
t
INVERTING
OUTPUT
THL
FIGURE 1. HC AND HCU TRANSITION TIMES AND PROPAGA-
TION DELAY TIMES, COMBINATION LOGIC
= 6ns
t
PLH
t
f
1.3V
10%
90%
t
TLH
tr = 6ns
INPUT
t
INVERTING
OUTPUT
THL
t
PHL
2.7V
1.3V
0.3V
FIGURE 2. HCT TRANSITION TIMES AND PROPAGATION
DELAY TIMES, COMBINATION LOGIC
5
3V
GND
CD54HC85, CD74HC85, CD54HCT85, CD74HCT85
Test Circuits and Waveforms
LEAST SIGNIFICANT
4-BITS OF EACH WORD
MOST SIGNIFICANT
4-BITS OF EACH WORD
FIGURE 3. SERIES CASCADING - COMPARING 12-BIT WORDS
GND
V
CC
GND
A0
A1
A2
A3
B0
B1
B2
B3
A4
A5
A6
A7
B4
B5
B6
B7
A0
A1
A2
A3
B0
B1
B2
B3
(A > B) IN
(A = B) IN
(A < B) IN
A0
A1
CD74HC85
A2
CD74HCT85
A3
B0
B1
B2
B3
(A > B) IN
(A = B) IN
(A < B) IN
A4
A5
CD74HC85
A6
CD74HCT85
A7
B4
(A > B) OUT
B5
(A = B) OUT
B6
(A < B) OUT
B7
(A > B) IN
(A = B) IN
(A < B) IN
A0
A1
CD74HC85
A2
CD74HCT85
A3
B0
(A > B) OUT
B1
(A = B) OUT
B2
(A < B) OUT
B3
OUTPUTS
6
S
CD54HC85, CD74HC85, CD54HCT85, CD74HCT85
Test Circuits and Waveforms
GND
B1
A1
B0
A0
VCC
GND
CD74HC85
B3
CD74HCT85
A3
B2
A2
(A < B) OUT
B1
(A = B) OUT
A1
(A > B) OUT
B0
A0
(A < B) IN
(A = B) IN
(A > B) IN
CD74HC85
B3
CD74HCT85
A3
B2
A2
(A < B) OUT
B1
(A = B) OUT
A1
(A > B) OUT
B0
A0
(A < B) IN
(A = B) IN
(A > B) IN
NC
OUTPUTS
B6
A6
B5
A5
B4
A4
B3
A3
B2
GND
A2
CD74HC85
B3
CD74HCT85
A3
B2
(A < B) OUT
A2
(A = B) OUT
B1
A1
(A > B) OUT
B0
A0
(A < B) IN
(A = B) IN
(A > B) IN
B11
A11
B10
A10
B9
A9
B8
A8
B7
GND
A7
NC
FIGURE 4. PARALLEL CASCADING - COMPARING 12-BIT WORDS
CD74HC85
B3
CD74HCT85
A3
B2
A2
(A > B) OUT
B1
(A = B) OUT
A1
(A < B) OUT
B0
A0
(A < B) IN
(A = B) IN
(A > B) IN
OUTPUT
7
PACKAGE OPTION ADDENDUM
www.ti.com
PACKAGING INFORMATION
Orderable DeviceStatus
5962-8867201EAACTIVECDIPJ161TBDCall TIN / A for Pkg Type
8601301EAACTIVECDIPJ161TBDCall TIN / A for Pkg Type
CD54HC85F3AACTIVECDIPJ161TBDCall TIN / A for Pkg Type
CD54HCT85F3AACTIVECDIPJ161TBDCall TIN / A for Pkg Type
CD74HC85EACTIVEPDIPN1625Pb-Free
CD74HC85EE4ACTIVEPDIPN1625Pb-Free
CD74HC85MACTIVESOICD1640Green (RoHS &
CD74HC85M96ACTIVESOICD162500 Green (RoHS &
CD74HC85M96E4ACTIVESOICD162500 Green (RoHS &
CD74HC85ME4ACTIVESOICD1640Green (RoHS &
CD74HC85MTACTIVESOICD16250 Green (RoHS &
CD74HC85MTE4ACTIVESOICD16250 Green (RoHS &
CD74HC85NSRACTIVESONS162000 Green (RoHS &
CD74HC85NSRE4ACTIVESONS162000 Green (RoHS &
CD74HC85PWACTIVETSSOPPW1690Green (RoHS &
CD74HC85PWE4ACTIVETSSOPPW1690Green (RoHS &
CD74HC85PWRACTIVETSSOPPW162000 Green (RoHS &
CD74HC85PWRE4ACTIVETSSOPPW162000 Green (RoHS &
CD74HC85PWTACTIVETSSOPPW16250 Green (RoHS &
CD74HC85PWTE4ACTIVETSSOPPW16250 Green (RoHS &
CD74HCT85EACTIVEPDIPN1625Pb-Free
CD74HCT85EE4ACTIVEPDIPN1625Pb-Free
CD74HCT85MACTIVESOICD1640Green (RoHS &
CD74HCT85M96ACTIVESOICD162500 Green (RoHS &
CD74HCT85M96E4ACTIVESOICD162500 Green (RoHS &
CD74HCT85ME4ACTIVESOICD1640Green (RoHS &
CD74HCT85MTACTIVESOICD16250 Green (RoHS &CU NIPDAULevel-1-260C-UNLIM
(1)
Package
Type
Package
Drawing
Pins Package
Qty
Eco Plan
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
(RoHS)
(RoHS)
(RoHS)
(RoHS)
(2)
Lead/Ball Finish MSL Peak Temp
CU NIPDAUN / A for Pkg Type
CU NIPDAUN / A for Pkg Type
CU NIPDAULevel-1-260C-UNLIM
CU NIPDAULevel-1-260C-UNLIM
CU NIPDAULevel-1-260C-UNLIM
CU NIPDAULevel-1-260C-UNLIM
CU NIPDAULevel-1-260C-UNLIM
CU NIPDAULevel-1-260C-UNLIM
CU NIPDAULevel-1-260C-UNLIM
CU NIPDAULevel-1-260C-UNLIM
CU NIPDAULevel-1-260C-UNLIM
CU NIPDAULevel-1-260C-UNLIM
CU NIPDAULevel-1-260C-UNLIM
CU NIPDAULevel-1-260C-UNLIM
CU NIPDAULevel-1-260C-UNLIM
CU NIPDAULevel-1-260C-UNLIM
CU NIPDAUN / A for Pkg Type
CU NIPDAUN / A for Pkg Type
CU NIPDAULevel-1-260C-UNLIM
CU NIPDAULevel-1-260C-UNLIM
CU NIPDAULevel-1-260C-UNLIM
CU NIPDAULevel-1-260C-UNLIM
12-Jan-2006
(3)
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
Orderable DeviceStatus
(1)
Package
Type
Package
Drawing
Pins Package
Qty
Eco Plan
(2)
Lead/Ball Finish MSL Peak Temp
12-Jan-2006
(3)
no Sb/Br)
CD74HCT85MTE4ACTIVESOICD16250 Green (RoHS &
CU NIPDAULevel-1-260C-UNLIM
no Sb/Br)
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
Addendum-Page 2
MECHANICAL DATA
MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999
PW (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE
14 PINS SHOWN
0,65
1,20 MAX
14
0,30
0,19
8
4,50
4,30
PINS **
7
Seating Plane
0,15
0,05
8
1
A
DIM
14
0,10
6,60
6,20
M
0,10
0,15 NOM
0°–8°
2016
Gage Plane
24
0,25
0,75
0,50
28
A MAX
A MIN
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
D. Falls within JEDEC MO-153
3,10
2,90
5,10
4,90
5,10
4,90
6,60
6,40
7,90
7,70
9,80
9,60
4040064/F 01/97
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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