nb2308a ON Semiconductor, nb2308a Datasheet - Page 2

• Manufacturer Part Number: nb2308a
• Description: 3.3 V Zero Delay Clock Buffer
• Manufacturer: ON Semiconductor

Table 1. CONFIGURATIONS
1. Output phase is indeterminant (0° or 180° from input clock). If phase integrity is required, use the NB2308Ax2.
Table 2. SELECT INPUT DECODING
2. Outputs inverted on 2308-2 and 2308-3 in bypass mode, S2 = 1 and S1 = 0.
NB2308Ax1
NB2308Ax1H
NB2308Ax2
NB2308Ax2
NB2308Ax3
NB2308Ax3
NB2308Ax4
NB2308Ax5H
S2
0
0
1
1
Device
Extra Divider (-5H)
REF
S2
S1
S1
0
1
0
1
(see Figures 11, 12, 13, 14 and 15 for device specific Block Diagrams)
Bank A or Bank B
Bank A or Bank B
Bank A
Bank B
Bank A
Bank B
Bank A or Bank B
Bank A or Bank B
(x = I for Industrial)
Feedback From
B2
Driven (Note 2)
Clock A1 - A4
Three-state
Driven
Driven
B2
Extra Divider (-3, -4)
SELECT INPUT
DECODING
Figure 1. Block Diagram
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Reference
Reference
Reference
2 X Reference
2 X Reference
4 X Reference
2 X Reference
Reference B2
PLL
NB2308A
Extra Divider (-2, -3)
Bank A Frequency
Clock B1 - B4
Three-state
Three-state
2
Driven
Driven
MUX
B2
Output Source
Reference
Reference
Reference B2
Reference
Reference or Reference (Note 1)
2 X Reference
2 X Reference
Reference B2
Reference
PLL
PLL
PLL
Bank B Frequency
PLL ShutDown
FBK
CLKA1
CLKA2
CLKA3
CLKA4
CLKB1
CLKB2
CLKB3
CLKB4
Y
N
Y
N