MC14568BCP ON Semiconductor, MC14568BCP Datasheet - Page 8

• Manufacturer Part Number: MC14568BCP
• Manufacturer: ON Semiconductor

Specifications of MC14568BCP

• Operating Temperature (max): 125C
• Package Type: PDIP
• Pin Count: 16
• Mounting: Through Hole
• Lead Free Status / Rohs Status: Not Compliant

counter, practically all usual reference frequencies, or chan-
nel spacings of 25, 20, 12.5, 10, 6.25 kHz, etc. are easily
achievable.
PROGRAMMABLE DIVIDE–BY–N
4–BIT COUNTER (D2)
(40 kHz)
Frequencies shown in parenthesis are given as an example.
MC14568B
8
If used in cascade with the programmable divide–by–N
This counter is programmable by using inputs D P0 ... D P3
V SS
f in
PE
PC in
C1
CTI
“0”
MC14568B
DP0 – – – – DP3
C
Figure 7. Frequency Synthesizer with MC14568B and MC14569B Using a Mixer
Figure 6. Cascading MC14568B and MC14522B or MC14526B with MC14569B
MC14569B
ZERO DETECT
Q1/C2
PC out
LSD
CF
G
F
Q
ZERO DETECT
V SS
V SS
MC14569B
C
PE
DP0 – – – – – – DP3
CF
TYPICAL APPLICATIONS
MC14522B
MC14526B
(Channel Spacing 10 kHz)
OR
CF
C
Q4
“0”
VCO
(pins 7 ... 4). The Preset Enable input enables the parallel
preset inputs D P0 ... D P3 . The “0” output must be externally
connected to the PE input for single stage applications.
Since there is not a cascade feedback input, this counter,
when cascaded, must be used as the most significant digit.
Because of this, it can be cascaded with binary counters as
well as with BCD counters (MC14569B, MC14522B,
MC14526B).
C
PE
DP0 – – – – – – DP3
MC14011
MC14522B
MC14526B
OR
CF
Q4
“0”
2M
MOTOROLA CMOS LOGIC DATA
Q1/C2
PE
DP0 – – – – – – DP3
MC14568B
MSD
V DD
(143.5 MHz)
“0”
2 k
OSCILLATOR
f out
(144 – 146 MHz)
CRYSTAL
f out
MIXER