DS1864 Maxim Integrated Products, DS1864 Datasheet - Page 5

• Manufacturer Part Number: DS1864
• Description: SFP Laser Controller and Diagnostic IC
• Manufacturer: Maxim Integrated Products

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I
(V
AC ELECTRICAL CHARACTERISTICS (continued)
(V
2
SCL Clock Frequency
Bus Free Time Between Stop and
Start Conditions
Hold Time (Repeated) Start
Condition
Low Period of SCL
High Period of SCL
Data Hold Time
Data Setup Time
Start Setup Time
SDA and SCL Rise Time
SDA and SCL Fall Time
Stop Setup Time
SDA and SCL Capacitive
Loading
EEPROM Write Time
TIMING FOR SOFT CONTROL AND STATUS FUNCTIONS
TX-D Assert Time
TX-D Deassert time
Time to Initialize, Including
Reset of TX-F
TX-F Assert Time
RX-LOS Assert Time
RX-LOS Deassert Time
Rate-Select Change Time
CC
CC
C AC ELECTRICAL CHARACTERISTICS
= 2.97V to 5.5V, T
= 2.97V to 5.5V; T
PARAMETER
PARAMETER
A
A
= -40°C to +95°C, timing referenced to V
= -40°C to +95°C.)
t
SYMBOL
SYMBOL
t
RATE_SEL
t
t
LOS_OFF
t
t
t
t
LOS_ON
HD:DAT
t
HD:STA
SU:DAT
SU:STO
SU:STA
t
FAULT
t
t
t
t
f
HIGH
LOW
t
SCL
BUF
C
OFF
INIT
t
ON
t
t
W
R
F
B
_____________________________________________________________________
(Note 14)
(Note 15)
(Note 15)
(Note 15)
(Note 16)
Time from TX-D set until DACs fall below
10% of nominal (Notes 13, 17)
Time from TX-D cleared until DACs rise
above 90% of nominal (Notes 13, 17)
Time from power-on or negation of TX-F
using TX-D;
serial communication possible
Time from fault to TX-F set (Note 17)
Time from occurrence of loss of signal to
RX-LOS set
Time from occurrence of presence of signal
to RX-LOS cleared
Time from change of state of rate-select bit
to rate-select output (RSELOUT) pin change
SFP Laser Controller and
CONDITIONS
CONDITIONS
IL(MAX)
and V
IH(MIN)
.) (See Figure 19)
Diagnostic IC
0.1C
0.1C
20 +
20 +
MIN
MIN
100
1.3
0.6
1.3
0.6
0.6
0.6
0
0
B
B
TYP
TYP
10
MAX
MAX
200
400
300
300
400
0.9
20
10
50
50
50
50
50
UNITS
UNITS
kHz
ms
ms
ms
ms
ms
ms
ms
ms
pF
µs
µs
µs
µs
µs
ns
µs
ns
ns
µs
5