MC14553B Datasheet, PDF (1/12 Pages) Motorola, Inc – 3-Digit BCD Counter

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.
An on–chip oscillator provides the low–frequency scanning clock
which drives the multiplexer output selector.
This device is used in instrumentation counters, clock displays,
digital panel meters, and as a building block for general logic
applications.
• TTL Compatible Outputs
• On–Chip Oscillator
• Cascadable
• Clock Disable Input
• Pulse Shaping Permits Very Slow Rise Times on Input Clock
• Output Latches
• Master Reset
MAXIMUM RATINGS (Voltages Referenced to V_SS) (Note 1.)
Symbol
Parameter
Value
Unit
V_DD
DC Supply Voltage Range
– 0.5 to +18.0
V
V_in, V_out Input or Output Voltage Range – 0.5 to V_DD + 0.5
V
(DC or Transient)
I_in
Input Current
(DC or Transient) per Pin
±10
mA
I_out
Output Current
(DC or Transient) per Pin
+20
mA
P_D
Power Dissipation,
per Package (Note 2.)
500
mW
T_A
Ambient Temperature Range
T_stg
Storage Temperature Range
T_L
Lead Temperature
(8–Second Soldering)
– 55 to +125
°C
– 65 to +150
°C
260
°C
1. Maximum Ratings are those values beyond which damage to the device
may occur.
2. Temperature Derating:
Plastic “P and D/DW” 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
v v ^{high–impedance circuit. For proper operation, Vin and Vout should be constrained}
to the range V_SS (V_in or V_out) V_DD.
Unused inputs must always be tied to an appropriate logic voltage level (e.g.,
either V_SS or V_DD). Unused outputs must be left open.
http://onsemi.com
PDIP–16
P SUFFIX
CASE 648
MARKING
DIAGRAMS
16
MC14553BCP
AWLYYWW
1
16
SOIC–16
DW SUFFIX
CASE 751G
14553B
AWLYYWW
1
A
= Assembly Location
WL or L = Wafer Lot
YY or Y = Year
WW or W = Work Week
ORDERING INFORMATION
Device
Package
Shipping
MC14553BCP
MC14553BDW
PDIP–16
SOIC–16
25/Rail
47/Rail
© Semiconductor Components Industries, LLC, 2000
1
March, 2000 – Rev. 3
Publication Order Number:
MC14553B/D