DS1874T+ Maxim Integrated Products, DS1874T+ Datasheet - Page 62

• Manufacturer Part Number: DS1874T+
• Description: IC CTLR SFP+ ANLG LDD 28-TQFN
• Manufacturer: Maxim Integrated Products
• Type: Laser Diode Controllerr

Specifications of DS1874T+

• Number Of Channels: 1
• Voltage - Supply: 2.85 V ~ 3.9 V
• Current - Supply: 2.5mA
• Operating Temperature: -40°C ~ 95°C
• Package / Case: 28-WFQFN Exposed Pad
• Mounting Type: Surface Mount
• Number Of Outputs: 5
• Duty Cycle (max): 50 %
• Output Voltage: 0 V to 3.9 V
• Mounting Style: SMD/SMT
• Switching Frequency: 0 KHz to 400 KHz
• Operating Supply Voltage: 2.85 V to 3.9 V
• Supply Current: 2.5 mA to 10 mA
• Maximum Operating Temperature: + 95 C
• Fall Time: 300 ns
• Minimum Operating Temperature: - 40 C
• Rise Time: 300 ns
• Synchronous Pin: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 90-1874T+000

Table 02h, Register 8Dh: RESERVED
SFP+ Controller with Digital LDD Interface
Table 02h, Register 8Eh: RIGHT-SHIFT 1 (RSHIFT 1 )
Table 02h, Register 8Fh: RIGHT-SHIFT 0 (RSHIFT 0 )
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8Eh
8Fh
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
This register is reserved.
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
Allows for right-shifting the final answer of MON1 and MON2 voltage measurements. This allows for scaling the
measurements to the smallest full-scale voltage and then right-shifting the final result so the reading is weighted
to the correct LSB.
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
Allows for right-shifting the final answer of MON3 and MON4 voltage measurements. This allows for scaling the
measurements to the smallest full-scale voltage and then right-shifting the final result so the reading is weighted
to the correct LSB. The MON3 right-shifting is only available for the fine mode of operation. The coarse mode does
not right-shift.
RESERVED
RESERVED
BIT 7
BIT 7
MON1
MON3
2
2
00h
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
PW2 or (PW1 and RWTBL246)
Nonvolatile (SEE)
30h
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
PW2 or (PW1 and RWTBL246)
Nonvolatile (SEE)
00h
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
PW2 or (PW1 and RWTBL246)
Nonvolatile (SEE)
MON1
MON3
1
1
MON1
MON3
0
0
RESERVED
RESERVED
MON2
MON4
2
2
MON2
MON4
1
1
MON2
MON4
BIT 0
BIT 0
0
0