Datasheet

DS1886
SFP and PON ONU Controller
with Digital LDD Interface
12Maxim Integrated
AC ELECTRICAL CHARACTERISTICS
(V
CC
= +2.97V to +3.63V, T
A
= -40NC to +95NC, unless otherwise noted.) (Note 1)
STARTUP TIMING CHARACTERISTICS
(V
CC
= +2.97V to +3.63V, T
A
= -40NC to +95NC, unless otherwise noted.) (Note 1)
3-WIRE DIGITAL INTERFACE SPECIFICATION
(V
CC
= +2.97V to +3.63V, T
A
= -40NC to +95NC, unless otherwise noted. Timing is referenced to V
IL(MAX)
and V
IH(MIN)
.) (Note 1)
(See Figure 13.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
TXD Rising Edge to Fault Clear t
OFF
From h TXD (Notes 8, 9)
5
Fs
TXD Falling Edge to TXDOUT
Falling
t
ON
From i TXD (Note 10)
5
Fs
Recovery After Power-Up:
MAX3710
t
INIT_3710
From h V
CC
> POA (Note 11)
1 ms
Recovery After Power-Up:
MAX3710 and MAX3945
t
INIT_3945
From h V
CC
> VCC LO alarm or warning
(Note 12)
1 ms
Fault Assert Time
(to TXFOUT = 1)
t
INITR1
From i TXD
30 ms
Fault Reset Time at Power-On
(to TXFOUT = 0)
t
INITR2
From h V
CC
> POA, Figure 12c (Note 13)
12.5 ms
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Output Enable Time Following
POA
t
INIT
(Notes 13, 14) 13 ms
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SCLOUT Clock Frequency f
SCLOUT
1.05 MHz
SCLOUT Duty Cycle t
3WDC
50 %
SDAOUT Setup Time t
DS
500 ns
SDAOUT Hold Time t
DH
100 ns
CSEL1OUT, CSEL2OUT Pulse-Width
Low
t
CSW
1
Fs
CSEL1OUT, CSEL2OUT Leading
Time Before the First SCLOUT Edge
t
L
1
Fs
CSEL1OUT, CSEL2OUT Trailing
Time After the Last SCLOUT Edge
t
T
1
Fs
SDAOUT, SCLOUT Load C
B3W
Total bus capacitance on one line 10 pF