DS1877T+T&R Maxim Integrated Products, DS1877T+T&R Datasheet - Page 10

• Manufacturer Part Number: DS1877T+T&R
• Description: IC CTLR/MON SFP 1-2CH 28TQFN
• Manufacturer: Maxim Integrated Products
• Type: SFP+ Controllerr

Specifications of DS1877T+T&R

• Input Type: Logic
• Output Type: Logic
• Interface: I²C
• Current - Supply: 2.5mA
• Mounting Type: Surface Mount
• Package / Case: 28-WFQFN exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 90-1877T+TRL

SFP Controller for Dual Rx Interface
10
11, 15, 23,
8, 18, 21
24, 25
PIN
10
1
2
3
4
5
6
7
9
RSELOUT
NAME
FAULT
LOS1
LOS2
RSEL
GND
DNC
SDA
N.C.
SCL
INX
Rate-Select Output
I
I
Transmit Fault Input and Output,
Open Drain
Loss-of-Signal Input 1
Digital Input. General-purpose
input, AS1 in SFF-8079, or RS1
in SFF-8431.
Loss-of-Signal Input 2
Ground Connection
Rate-Select Input
Do Not Connect
No Connection. Not internally
connected.
2
2
C Serial-Clock Input
C Serial-Data Input/Output
TOP VIEW
*EXPOSED PAD.
FUNCTION
LOSOUT
REFIN
OUTX
N.C.
N.C.
N.C.
V
CC
22
23
24
25
26
27
28
21
1
(5mm
+
20
2
THIN QFN
×
19
3
5mm
DS1877
18
4
×
17
5
0.8mm)
12, 13
14, 17
16, 26
*EP
16
6
PIN
19
20
22
27
28
—
15
7
14
13
12
11
10
9
8
LOSOUT
RSSI2P,
RSSI1P,
RSSI2N
RSSI1N
RSSI1P
RSSI2N
RSSI2P
N.C.
DNC
RSEL
GND
NAME
REFIN
DAC2
DAC1
OUTX
V
EP
CC
Differential External Monitor Input
2 and LOS2 LO Quick Trip
Differential External Monitor Input
1 and LOS1 LO Quick Trip
Power-Supply Input
DAC2, Delta-Sigma Output
DAC1, Delta-Sigma Output
Reference Input for DAC1 and
DAC2
Receive Loss-of-Signal Output
Digital Output. General-purpose
output, AS1 output in SFF-8079,
or RS1 output in SFF-8431.
Exposed Pad (Connect to GND)
Pin Configuration
Pin Description
FUNCTION