com90c66 Standard Microsystems Corp., com90c66 Datasheet - Page 59

• Manufacturer Part Number: com90c66
• Description: Arcnet Controller/transceiver With At Interface And On-chip Ram Corporation
• Manufacturer: Standard Microsystems Corp.

XTAL1
CLK
FIGURE 24 – TTL INPUT CLOCK TIMING ON XTAL1 PIN
t1
t2
t3
t1
t2
t3
f
f
Input Clock High Time
Input Clock Period
Input Clock Frequency
Output Clock High Time
Output Clock Low Time
Output Clock Frequency
Input Clock Low Time
Output Clock Period
t1
t1
FIGURE 25 - CLK OUTPUT TIMING
Parameter
Parameter
t2
t2
59
min
min
20
50
20
8
typ
typ
100
100
200
5
t3
t3
max units
max units
125
20
MHz
MHz
nS
nS
nS
nS
nS
nS