MC44144 Datasheet, PDF (5/8 Pages) Motorola, Inc – SUBCARRIER PHASE–LOCKED LOOP

MC44144
Linear and TTL Output Buffers
The output buffers of the MC44144 are not designed to
any specific logic family. If it is desired, Linear or TTL buffers
can be added externally. Figure 3 shows an example of a
Linear buffer using an MC3346 Transistor array; virtually any
utility transistor can be used. Figure 4 shows a TTL type
buffer using an MC74LS04 buffer.
Figure 3. Linear Buffer
1
2
+5.0V
3
4
Cin
R1
3.3k
5
4X Subcarrier _1000µF
Output or 1X
6
Subcarrier
Output
R2
7
1.8k
R5
56
MC3346
14
13
12
+5.0V
11
10
R4
430
9
Co
1000µF
8
Linear Output
C2
R3
100pF
300
4X Subcarrier
Output or 1X
Subcarrier
Output
C1
0.01µF
R2
10k
Figure 4. TTL Buffer
R3
1.0k
MC74LS04
13
11
9
5
3
1
12
10
8
TTL Output
C2
47pF
6
4
2
MOTOROLA ANALOG IC DEVICE DATA
5