afbr-79q4ekz Avago Technologies, afbr-79q4ekz Datasheet - Page 5

• Manufacturer Part Number: afbr-79q4ekz
• Description: 40 Gigabit Ethernet 40gbase-sr4 Qsfp+ Pluggable, Parallel Fiber-optics Module
• Manufacturer: Avago Technologies

Recommended Operating Conditions
Recommended Operating Conditions specify parameters for which the optical and electrical characteristics hold
unless otherwise noted. Optical and electrical characteristics are not defined for operation outside the Recommended
Operating Conditions, reliability is not implied and damage to the module may occur for such operation over an
extended period of time.
*
Notes:
1. The position of case temperature measurement is shown in Figure 8.
2. 64b/66b coding is assumed
3. Power Supply Noise is defined as the peak-to-peak noise amplitude over the frequency range at the host supply side of the recommended power
Transceiver Electrical Characteristics*
The following characteristics are defined over the Recommended Operating Conditions unless otherwise noted. Typical
values are for Tc = 40°C, Vcc = 3.3 V
*
Note:
1. Power On Initialization Time is the time from when the supply voltages reach and remain above the minimum Recommended Operating Conditions
5
Parameter
Case Temperature
3.3 V Power Supply Voltage
Signal Rate per Channel
Control* Input Voltage High
Control* Input Voltage Low
Two Wire Serial (TWS) Interface Clock Rate
Power Supply Noise
Receiver Differential Data Output Load
Fiber Length: 2000 MHz∙km 50μm MMF (OM3)
Fiber Length: 4700 MHz∙km 50μm MMF (OM4)
Parameter
Transceiver Power Consumption
Transceiver Power Supply Current
Transceiver Power On Initialization Time
Control signals, LVTTL (3.3 V) compatible
supply filter with the module and recommended filter in place. Voltage levels including peak-to-peak noise are limited to the recommended
operating range of the associated power supply. See Figure 9 for recommended power supply filter.
For control signal timing including ModSelL, LPMode, ResetL, ModPrsL, IntL, SCL and SDA see Control Interface Section.
to the time when the module enables TWS access. The module at that point is fully functional.
Symbol
Tc
Vcc
Vih
Vil
Symbols
t
pwr init
Min
Min
0
3.135
2
-0.3
0.5
0.5
Typ
40
3.3
10.3125
100
Typ
Max
70
3.465
Vcc+.3
0.8
400
50
100
150
Max
1.5
475
2000
Units
°C
V
GBd
V
V
kHz
mVpp
Ohms
m
m
Units
W
mA
ms
Reference
1
2
Reference
1
3