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MC14585B_06 Datasheet, PDF (1/7 Pages) ON Semiconductor – 4−Bit Magnitude Comparator | |||
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MC14585B
4âBit Magnitude Comparator
The MC14585B 4âBit Magnitude Comparator is constructed with
complementary 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 4âbit words (A and B)
and determines whether they are âless thanâ, âequal toâ, or âgreater
thanâ by a high level on the appropriate output. For words greater than
4âbits, 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 CPUâs, correction and/or detection of
instrumentation conditions, comparator in testers, converters, and
controls.
Features
⢠Diode Protection on All Inputs
⢠Expandable
⢠Applicable to Binary or 8421âBCD Code
⢠Supply Voltage Range = 3.0 Vdc to 18 Vdc
⢠Capable of Driving Two LowâPower TTL Loads or One LowâPower
Schottky TTL Load over the Rated Temperature Range
⢠Can be Cascaded â See Figure 3
⢠PbâFree Packages are Available*
MAXIMUM RATINGS (Voltages Referenced to VSS)
Parameter
Symbol
Value
Unit
DC Supply Voltage Range
Input or Output Voltage Range
(DC or Transient)
VDD â0.5 to +18.0 V
Vin, Vout â 0.5 to VDD V
+ 0.5
Input or Output Current (DC or Transient) Iin, Iout
±10
mA
per Pin
Power Dissipation per Package (Note 1)
PD
500
mW
Ambient Temperature Range
TA
â55 to +125 °C
Storage Temperature Range
Tstg
â65 to +150 °C
Lead Temperature (8âSecond Soldering)
TL
260
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum
Ratings are stress ratings only. Functional operation above the Recommended
Operating Conditions is not implied. Extended exposure to stresses above the
Recommended Operating Conditions may affect device reliability.
1. Temperature Derating: Plastic âP and D/DWâ
Packages: â 7.0 mW/_C From 65_C To 125_C
This device contains protection circuitry to guard against damage due to high
static voltages or electric fields. However, precautions must be taken to avoid
applications of any voltage higher than maximum rated voltages to this
highâimpedance circuit. For proper operation, Vin and Vout should be constrained
to the range VSS v (Vin or Vout) v VDD.
Unused inputs must always be tied to an appropriate logic voltage level
(e.g., either VSS or VDD). Unused outputs must be left open.
*For additional information on our PbâFree strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
1
1
http://onsemi.com
MARKING
DIAGRAMS
PDIPâ16 16
P SUFFIX
CASE 648
1
MC14585BCP
AWLYYWWG
SOICâ16 16
D SUFFIX
CASE 751B
1
14585BG
AWLYWW
16
SOEIAJâ16
F SUFFIX
CASE 966
MC14585B
ALYWG
1
1
A
= Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
G
= PbâFree Package
ORDERING INFORMATION
Device
Package
Shippingâ
MC14585BCP
MC14585BCPG
MC14585BD
MC14585BDG
MC14585BDR2
PDIPâ16 25 Units / Rail
PDIPâ16
(PbâFree)
SOICâ16
25 Units / Rail
48 Units / Rail
SOICâ16
(PbâFree)
48 Units / Rail
SOICâ16 2500/Tape & Reel
MC14585BDR2G SOICâ16 2500/Tape & Reel
(PbâFree)
MC14585BFEL SOEIAJâ16 2000/Tape & Reel
MC14585BFELG SOEIAJâ16 2000/Tape & Reel
(PbâFree)
â For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2006
1
June, 2006 â Rev. 6
Publication Order Number:
MC14585B/D
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