DS1874T+ Maxim Integrated Products, DS1874T+ Datasheet - Page 59

• 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 89h: CNFGA
89h
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
SFP+ Controller with Digital LDD Interface
BITS 1:0
LOSC
BIT 7
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
______________________________________________________________________________________
LOSC: LOS Configuration. Defines the source for the LOSOUT pin (see Figure 13).
0 = LOS LO alarm is used as the source.
1 = (Default) LOS input pin is used as the source.
RESERVED
INV LOS: Inverts the buffered input pin LOS to output pin LOSOUT (see Figure 13).
0 = Noninverted LOS to LOSOUT pin.
1 = Inverted LOS to LOSOUT pin.
ASEL: Address Select.
0 = Device address is A2h.
1 = Byte DEVICE ADDRESS in Table 02h, Register 8Ch is used as the device address.
MASK:
0 = Alarm-enable row exists at Table 01h, Registers F8h–FFh. Table 05h, Registers F8h–FFh are
empty.
1 = Alarm-enable row exists at Table 05h, Registers F8h–FFh. Table 01h, Registers F8h–FFh are
empty.
INVRSOUT: Allow for inversion of RSELOUT pin (see Figure 13).
0 = RSELOUT is not inverted.
1 = RSELOUT is inverted.
RESERVED
RESERVED
80h
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
PW2 or (PW1 and RWTBL246)
Nonvolatile (SEE)
INV LOS
ASEL
MASK
INVRSOUT
RESERVED
RESERVED
BIT 0
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