TL16C450 Datasheet, PDF (23/25 Pages) Texas Instruments – ASYNCHRONOUS COMMUNICATIONS ELEMENT

TL16C450
ASYNCHRONOUS COMMUNICATIONS ELEMENT
SLLS037B – MARCH 1988 – REVISED MARCH 1996
PRINCIPLES OF OPERATION
External
Clock
Driver
XTAL1
VCC
Optional
Clock
Output
Optional
XTAL2
C1
RP
XTAL1
Crystal
Oscillator Clock
to Baud
Generator
Logic
VCC
RX2
XTAL2
C2
Oscillator Clock
to Baud
Generator
Logic
CRYSTAL
3.1 MHz
1.8 MHz
TYPICAL CRYSTAL OSCILLATOR NETWORK
RP
1 MΩ
1 MΩ
RX2
1.5 kΩ
1.5 kΩ
C1
10 – 30 pF
10 – 30 pF
Figure 10. Typical Clock Circuits
C2
40 – 60 pF
40 – 60 pF
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