Semiconductor Components Industries, LLC, 2000
March, 2000 – Rev. 3
1 Publication Order Number:
MC14028B/D
MC14028B
BCD-To-Decimal Decoder
Binary-To-Octal Decoder
The MC14028B decoder is constructed so that an 8421 BCD code
on the four inputs provides a decimal (one–of–ten) decoded output,
while a 3–bit binary input provides a decoded octal (one–of–eight)
code output with D forced to a logic “0”. Expanded decoding such as
binary–to–hexadecimal (one–of–16), etc., can be achieved by using
other MC14028B devices. The part is useful for code conversion,
address decoding, memory selection control, demultiplexing, or
readout decoding.
• Diode Protection on All Inputs
• 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
• Positive Logic Design
• Low Outputs on All Illegal Input Combinations
• Similar to CD4028B.
MAXIMUM RATINGS (Voltages Referenced to V
SS
) (Note 2.)
Symbol Parameter Value Unit
V
DD
DC Supply Voltage Range –0.5 to +18.0 V
Vin, V
out
Input or Output Voltage Range
(DC or Transient)
–0.5 to VDD + 0.5 V
Iin, I
out
Input or Output Current
(DC or Transient) per Pin
±10 mA
P
D
Power Dissipation,
per Package (Note 3.)
500 mW
T
A
Ambient Temperature Range –55 to +125 °C
T
stg
Storage Temperature Range –65 to +150 °C
T
L
Lead Temperature
(8–Second Soldering)
260 °C
2. Maximum Ratings are those values beyond which damage to the device
may occur.
3. Temperature Derating:
Plastic “P and D/DW” Packages: – 7.0 mW/_C From 65_C T o 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
high–impedance circuit. For proper operation, V
in
and V
out
should be constrained
to the range V
SS
v (Vin or V
out
) v VDD.
Unused inputs must always be tied to an appropriate logic voltage level (e.g.,
either V
SS
or VDD). Unused outputs must be left open.
http://onsemi.com
A = Assembly Location
WL or L = Wafer Lot
YY or Y = Year
WW or W = Work Week
Device Package Shipping
ORDERING INFORMATION
MC14028BCP PDIP–16 2000/Box
MC14028BD SOIC–16 2400/Box
MC14028BDR2 SOIC–16 2500/Tape & Reel
1. For ordering information on the EIAJ version of
the SOIC packages, please contact your local
ON Semiconductor representative.
MARKING
DIAGRAMS
1
16
PDIP–16
P SUFFIX
CASE 648
MC14028BCP
AWLYYWW
SOIC–16
D SUFFIX
CASE 751B
1
16
14028B
AWLYWW
SOEIAJ–16
F SUFFIX
CASE 966
1
16
MC14028B
AWLYWW
MC14028BF SOEIAJ–16 See Note 1.
MC14028BFEL SOEIAJ–16 See Note 1.