DS1874T+ Maxim Integrated Products, DS1874T+ Datasheet - Page 31

• 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

The ALARM ENABLE bytes (Registers F8h–FFh) can be configured to exist in Table 05h instead of here at Table 01h
with the MASK bit (Table 02h, Register 89h). If the row is configured to exist in Table 05h, then these locations are
empty in Table 01h.
The access codes represent the factory default values of PW_ENA and PW_ENB (Table 02h, Registers C0h–C1h).
Read
Access
Write
Access
ACCESS
80–BF
C0–F7
ROW
(hex)
CODE
F8
<7>
<8>
<8>
ENABLE
separately
NAME
EEPROM
See each
ROW
EEPROM
ALARM
bit/byte
SFP+ Controller with Digital LDD Interface
<0>
______________________________________________________________________________________
BYTE 0/8
ALARM
PW2
<1>
All
EN
EE
EE
3
WORD 0
<2>
N/A
All
BYTE 1/9
ALARM
EN
EE
EE
hardware
DS1874
2
All and
<3>
All
BYTE 2/A
ALARM
PW2 +
EN
mode
EE
EE
PW2
<4>
bit
1
TABLE 01h
WORD 1
BYTE 3/B
<5>
All
All
ALARM
EN
EE
EE
0
<6>
N/A
All
WARN EN
BYTE 4/C
EE
EE
PW1
PW1
<7>
WORD 2
3
WARN EN
BYTE 5/D
PW2
PW2
<8>
Table 01h Register Map
EE
EE
2
PW2
<9>
N/A
RESERVED
BYTE 6/E
EE
EE
WORD 3
<10>
PW2
N/A
RESERVED
BYTE 7/F
EE
EE
<11>
PW1
All
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