MC14553B
3−Digit BCD Counter
The MC14553B 3−digit BCD counter consists of 3 negative edge
triggered BCD counters that are cascaded synchronously. A quad latch
at the output of each counter permits storage of any given count. The
information is then time division multiplexed, providing one BCD
number or digit at a time. Digit select outputs provide display control.
All outputs are TTL compatible.
http://onsemi.com
MARKING
An on−chip oscillator provides the low−frequency scanning clock
which drives the multiplexer output selector.
DIAGRAMS
This device is used in instrumentation counters, clock displays,
digital panel meters, and as a building block for general logic
applications.
16
1
PDIP−16
P SUFFIX
CASE 648
MC14553BCP
AWLYYWWG
Features
1
• TTL Compatible Outputs
• On−Chip Oscillator
16
• Cascadable
• Clock Disable Input
• Pulse Shaping Permits Very Slow Rise Times on Input Clock
• Output Latches
• Master Reset
• Pb−Free Packages are Available*
SO−16W
DW SUFFIX
CASE 751G
MC14553B
AWLYYWW
1
1
A
= Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
MAXIMUM RATINGS (Voltages Referenced to V
)
SS
G
= Pb−Free Package
Parameter
Symbol
Value
Unit
V
DC Supply Voltage Range
V
−0.5 to +18.0
DD
Input or Output Voltage Range
(DC or Transient)
V ,
−0.5 to V
+ 0.5
V
in
DD
4
3
V
out
Input Current (DC or Transient) per Pin
Output Current (DC or Transient) per Pin
Power Dissipation, per Package (Note 1)
Ambient Temperature Range
I
10
+20
500
mA
mA
mW
°C
in
CIA
CIB
9
7
6
Q0
Q1
Q2
I
out
CLOCK
12
10
P
D
LE
5
Q3
O.F.
DS1
DS2
DS3
T
−55 to +125
−65 to +150
260
A
14
2
Storage Temperature Range
T
stg
°C
11
13
DIS
MR
Lead Temperature (8−Second Soldering)
T
°C
L
1
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 “P and D/DW”
15
V
V
= PIN 16
= PIN 8
DD
SS
Figure 1. Block Diagram
Packages: – 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
ORDERING INFORMATION
high−impedance circuit. For proper operation, V and V should be constrained to
in
out
Device
Package
Shipping
the range V v (V or V ) v V
.
SS
in
out
DD
Unused inputs must always be tied to an appropriate logic voltage level
MC14553BCP
PDIP−16
25 Units / Rail
25 Units / Rail
(e.g., either V or V ). Unused outputs must be left open.
SS
DD
MC14553BCPG
PDIP−16
(Pb−Free)
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
MC14553BDW
SOIC−16
47 Units / Rail
©
Semiconductor Components Industries, LLC, 2006
1
Publication Order Number:
June, 2006 − Rev. 7
MC14553B/D