MAX3799
1Gbps to 14Gbps, SFP+ Multirate Limiting
Amplifier and VCSEL Driver
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PIN NAME SHORT TO V
CC
SHORT TO GND OPEN
1 LOS Normal (Note 1) Normal (Note 1) Normal (Note 1)
2 RSEL Normal (Note 1) Normal (Note 1) Normal (Note 1)
3 V
CCR
Normal
Disabled—HARD FAULT (external
supply shorted) (Note 2)
Normal (Note 3)—Redundant path
4 ROUT+ Normal (Note 1) Normal (Note 1) Normal (Note 1)
5 ROUT- Normal (Note 1) Normal (Note 1) Normal (Note 1)
6 V
CCR
Normal
Disabled—HARD FAULT (external
supply shorted) (Note 2)
Normal (Note 3)—Redundant path
7 V
CCD
Normal Disabled—HARD FAULT Disabled—HARD FAULT
8 DISABLE Disabled
Normal (Note 1). Can only be
disabled with other means.
Disabled
9 SCL Normal (Note 1) Normal (Note 1) Normal (Note 1)
10 SDA Normal (Note 1) Normal (Note 1) Normal (Note 1)
11 CSEL Normal (Note 1) Normal (Note 1) Normal (Note 1)
12 V
CCT
Normal
Disabled—Fault (external supply
shorted) (Note 2)
Normal (Note 3)—Redundant path
13 TIN+ SOFT FAULT SOFT FAULT Normal (Note 1)
14 TIN- SOFT FAULT SOFT FAULT Normal (Note 1)
15 V
CCT
Normal
Disabled—Fault (external supply
shorted) (Note 2)
Normal (Note 3)—Redundant path
16 BMON Disabled—HARD FAULT Normal (Note 1) Disabled—HARD FAULT
17 V
EET
Disabled—Fault (external supply
shorted) (Note 2)
Normal Disabled—HARD FAULT
18 V
CCT
Normal
Disabled—Fault (external supply
shorted) (Note 2)
Normal (Note 3)—Redundant path
19 TOUT- I
MOD
is reduced Disabled—HARD FAULT I
MOD
is reduced
20 TOUT+ I
MOD
is reduced Disabled—HARD FAULT I
MOD
is reduced
21 V
CCT
Normal
Disabled—Fault (external supply
shorted) (Note 2)
Normal (Note 3)—Redundant path
22 BIAS I
BIAS
is on—No Fault Disabled—HARD FAULT Disabled—HARD FAULT
23 FAULT Normal (Note 1) Normal (Note 1) Normal (Note 1)
24 V
CCT
Normal
Disabled—Fault (external supply
shorted) (Note 2)
Normal (Note 3)—Redundant path
25 V
CCT
Normal
Disabled—Fault (external supply
shorted) (Note 2)
Normal (Note 3)—Redundant path
26 V
EER
Disabled—Fault (external supply
shorted) (Note 2)
Normal Normal (Note 3)—Redundant path
27 V
CCR
Normal
Disabled—HARD FAULT (external
supply shorted) (Note 2)
Normal (Note 3)—Redundant path
28 RIN- Normal (Note 1) Normal (Note 1) Normal (Note 1)
29 RIN+ Normal (Note 1) Normal (Note 1) Normal (Note 1)
Table 3. Circuit Response to Single-Point Faults
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