MC14534BCL

Manufacturer Part NumberMC14534BCL
DescriptionDIP24
ManufacturerMotorola
MC14534BCL datasheets
 

Specifications of MC14534BCL

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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
5 Cascaded BCD Counters
The MC14534B is composed of five BCD ripple counters that have their
respective outputs multiplexed using an internal scanner. Outputs of each
counter are selected by the scanner and appear on four (BCD) pins.
Selection is indicated by a logic high on the appropriate digit select pin. Both
BCD and digit select outputs have three–state controls providing an
“open–circuit” when these controls are high and allowing multiplexing.
Cascading may be accomplished by using the carry–out pin. The counters
and scanner can be independently reset by applying a high to the counter
master reset (MR) and the scanner reset (SR). The MC14534B was
specifically designed for application in real time or event counters where
continual updating and multiplexed displays are used.
Four Operating Modes (See truth table)
Input Error Detection Circuit
Clock Conditioning Circuits for Slow Transition Inputs
Counter Sequences on Positive Transition of Clock A
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
TO CAPACITORS
22
23
CLOCK B
PULSE ERROR
PULSE
CLOCK A
SHAPER
4
2
MASTER
RESET
UNITS
CARRY
C 10
C n+4
CONTROL
Q0
Q3
5
MODE A
OUTPUT
CONTROL
MODE B
6
MUX
SCANNER
RESET
9
R
10
SCANNER
SCANNER
CLOCK
NOTE:
=
3–STATE
OUTPUT BUFFER
REV 3
1/94
MOTOROLA CMOS LOGIC DATA
Motorola, Inc. 1995
BLOCK DIAGRAM
1
3
ERROR OUT
DETECTOR
TEST
CONTROL
TENS
HUNDREDS
THOUSANDS
C 10
C n+4
C 10
C n+4
C 10
Q0
Q3
Q0
Q3
Q0
MUX
MUX
15
3–STATE DIGIT
CONTROL
7
8
14
16
11
DS1
DS2
DS3
DS4
DS5
DIGIT SELECT
MC14534B
L SUFFIX
CERAMIC
CASE 623
P SUFFIX
PLASTIC
CASE 709
DW SUFFIX
SOIC
CASE 751E
ORDERING INFORMATION
MC14XXXBCP
Plastic
MC14XXXBCL
Ceramic
MC14XXXBDW
SOIC
T A = – 55 to 125 C for all packages.
V DD = PIN 24
V SS = PIN 12
TEN
THOUSANDS
13
C n+4
C 10
C n+4
CARRY OUT
Q3
Q0
Q3
MUX
MUX
17
Q3
18
Q2
BCD
OUT
19
Q1
20
Q0
3–STATE BCD
21
CONTROL
3–State Control
Out
0
Q or DS
1
High Impedance
MC14534B
1