ML6680
AC CHARACTERISTICS
Over full range of operating conditions unless otherwise specified. (Note 1)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
CLOCK REFERENCE: XTAL1
f
XO
D
XO
Reference Clock Frequency
Reference Clock Duty Cycle
32.7
30
34.5
70
kHz
%
TWISTED PAIR RECEIVER: TPINP, TPINN
t
THTP
t
USQTP
t
REJTP
Input Pulse Width Threshold
Time to Unsquelch (Off to On)
Time to Reject (On to Off)
550
2
550
1000
5
1000
ns
µs
ns
OPTICAL RECEIVER: OPINP, OPINN
t
THOP
t
USQOP
Input Pulse Width Threshold
Time to Unsquelch (Off to On)
V(INSERTED) > 0.7V
V(INSERTED) > 0.7V
V(INSERTED) = 0V
t
REJOP
Time to Reject (On to Off)
V(INSERTED) > 0.7V
V(INSERTED) = 0V
PROPAGATION DELAYS STEADY STATE
t
TPOP
t
OPTP
t
TPTP
t
OPOP
TPINP-TPINN to OPOUT
OPINP-OPINN to
TPOUTP-TPOUTN
TPINP-TPINN to
TPOUTP-TPOUTN
OPINP-OPINN to OPOUT
20
30
30
20
ns
ns
ns
ns
550
3
0.8
3
0.8
1000
9
1.2
9
1.2
ns
µs
µs
µs
µs
INSERTION AND BYPASS KEY GENERATION (Fig. 1)
T_K1
T_K2
T_K3
T_BYP
T_KINIT1
Key Element #1
(avg. P
O
< P
O_Off
)
Key Element #2
(avg. P
O
> P
O_Off
)
Key Element #3
(avg. P
O
< P
O_Off
)
Bypass Element
(avg. P
O
> P
O_Off
)
Time that phantom power
should be applied in config 1
before generating the insertion
key.
Time that the optical input
should be valid in config 4
before generating the insertion
key.
Time that the optical input
should be invalid before
generating the bypass key.
V(KEYGEN) = V
CC
, V(TPINOK) > 0.7V
808
1616
1616
4.85
26.5
26.5
858
1717
µs
µs
µs
ms
ms
T_KINIT4
V(KEYGEN) = V
CC
, V(TPINOK) = 0V
V(PHTM1) = 0V, V(PHTM2) = 0V
26.5
ms
T_KOFF
V(KEYGEN) = VCC, V(TPINOK) = 0V
V(PHTM1) = 0V, V(PHTM2) = 0V
26.5
ms
6
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
