CD4541B_10 Datasheet, PDF (5/15 Pages) Texas Instruments – CMOS Programmable Timer High Voltage Types(20V Rating)

CD4541B
Digital Timer Application
A positive pulse on MASTER RESET resets the counters
and latch. The output goes high and remains high until the
number of pulses, selected by A and B, are counted. This
circuit is retriggerable and is as accurate as the input fre-
quency. If additional accuracy is desired, an external clock
can be used on pin 3. A setup time equal to the width of the
one-shot output is required immediately following initial
power up, during which time the output will be high.
INPUT
R_TC
1
2
C_TC
3
4
R_S AR ₅
MR ₆
7
V_DD
14
13 B
12 A
11
10
9
OUTPUT
8
t
FIGURE 3. DIGITAL TIMER APPLICATION CIRCUIT
5