DS1874T+ Maxim Integrated Products, DS1874T+ Datasheet - Page 35

• 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

Lower Memory, Register 00h–01h: TEMP ALARM HI
Lower Memory, Register 04h–05h: TEMP WARN HI
Lower Memory, Register 02h–03h: TEMP ALARM LO
Lower Memory, Register 06h–07h: TEMP WARN LO
00h, 04h
02h, 06h
01h, 05h
03h, 07h
Temperature measurement updates above this two’s complement threshold set corresponding alarm or warning bits.
Temperature measurement updates equal to or below this threshold clear alarm or warning bits.
Temperature measurement updates below this two’s complement threshold set corresponding alarm or warning bits.
Temperature measurement updates equal to or above this threshold clear alarm or warning bits.
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
SFP+ Controller with Digital LDD Interface
BIT 7
BIT 7
2
2
S
S
______________________________________________________________________________________
-1
-1
2
2
2
2
-2
-2
6
6
7FFFh
All
PW2 or (PW1 and WLOWER)
Nonvolatile (SEE)
8000h
All
PW2 or (PW1 and WLOWER)
Nonvolatile (SEE)
2
2
2
2
-3
-3
5
5
2
2
2
2
-4
-4
4
4
Lower Memory Register Descriptions
2
2
2
2
-5
-5
3
3
2
2
2
2
-6
-6
2
2
2
2
2
2
-7
-7
1
1
BIT 0
BIT 0
2
2
2
2
-8
-8
0
0
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