DS1886 Datasheet, PDF (12/92 Pages) Maxim Integrated Products – SFP and PON ONU Controller with Digital LDD Interface

DS1886
SFP and PON ONU Controller
with Digital LDD Interface
AC ELECTRICAL CHARACTERISTICS
(V_CC = +2.97V to +3.63V, T_A = -40NC to +95NC, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
TXD Rising Edge to Fault Clear
TXD Falling Edge to TXDOUT
Falling
t_OFF From h TXD (Notes 8, 9)
t_ON
From i TXD (Note 10)
Recovery After Power-Up:
MAX3710
t_{INIT_3710} From h V_CC > POA (Note 11)
Recovery After Power-Up:
MAX3710 and MAX3945
t_{INIT_3945}
From h V_CC > VCC LO alarm or warning
(Note 12)
Fault Assert Time
(to TXFOUT = 1)
t_INITR1 From i TXD
Fault Reset Time at Power-On
(to TXFOUT = 0)
t_INITR2 From h V_CC > POA, Figure 12c (Note 13)
MIN TYP MAX UNITS
5
Fs
5
Fs
1
ms
1
ms
30
ms
12.5
ms
STARTUP TIMING CHARACTERISTICS
(V_CC= +2.97V to +3.63V, T_A = -40NC to +95NC, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
Output Enable Time Following
POA
t_INIT (Notes 13, 14)
MIN TYP MAX UNITS
13
ms
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
SCLOUT Clock Frequency
SCLOUT Duty Cycle
SDAOUT Setup Time
SDAOUT Hold Time
CSEL1OUT, CSEL2OUT Pulse-Width
Low
SYMBOL
f_SCLOUT
t_3WDC
t_DS
t_DH
t_CSW
CONDITIONS
MIN TYP MAX UNITS
1.05
MHz
50
%
500
ns
100
ns
1
Fs
CSEL1OUT, CSEL2OUT Leading
Time Before the First SCLOUT Edge
t_L
1
Fs
CSEL1OUT, CSEL2OUT Trailing
Time After the Last SCLOUT Edge
SDAOUT, SCLOUT Load
t_T
C_B3W
Total bus capacitance on one line
1
Fs
10
pF
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