DS1874T+ Maxim Integrated Products, DS1874T+ Datasheet - Page 10

• 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

SFP+ Controller with Digital LDD Interface
10
8, 17, 21
12, 13
15, 23
19, 20
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PIN
10
11
14
16
18
22
24
25
26
27
28
—
1
2
3
4
5
6
7
9
DAC1, DAC2
RSELOUT
CSELOUT
SDAOUT
TXDOUT
SCLOUT
LOSOUT
MON3P,
MON3N
NAME
MON4
MON1
MON2
REFIN
OUT1
RSEL
GND
N.C.
SCL
SDA
LOS
TXD
TXF
V
IN1
EP
CC
Rate-Select Output
I
I
Transmit-Fault Input and Output. The output is open drain.
Loss-of-Signal Input
Digital Input. General-purpose input with AS1 in SFF-8079 or RS1 in SFF-8431.
Transmit-Disable Input
Ground Connection
Rate-Select Input
Transmit-Disable Output
External Monitor Input 4
Differential External Monitor Input 3 and LOS Quick Trip
External Monitor Input 1 and HBATH Quick Trip
Power-Supply Input
External Monitor Input 2. Feedback voltage for APC loop and HTXP/LTXP quick trip.
Reference Input for DAC1 and DAC2
Delta-Sigma Output 1/2
No Connection
Chip-Select Output. Part of the 3-wire interface to the MAX3798/MAX3799 laser driver/limiting
amplifier.
Serial-Clock Output. Part of the 3-wire interface to the MAX3798/MAX3799 laser driver/limiting
amplifier.
Serial-Data Input/Output. Part of the 3-wire interface to the MAX3798/MAX3799 laser driver/limiting
amplifier.
Open-Drain Receive Loss-of-Signal Output
Digital Output. General-purpose output with AS1 output in SFF-8079 or RS1 output in SFF-8431.
Exposed Pad
2
2
C Serial-Clock Input
C Serial-Data Input/Output
FUNCTION
Pin Description