DS1877 Ver la hoja de datos (PDF) - Maxim Integrated
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Fabricante
DS1877 Datasheet PDF : 65 Pages
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SFP Controller for Dual Rx Interface
Pin Configuration
TOP VIEW
21 20 19 18 17 16 15
REFIN 22
N.C. 23
N.C. 24
N.C. 25
VCC 26
LOSOUT 27
+
OUTX 28
DS1877
*EP
14 RSSI1P
13 RSSI2N
12 RSSI2P
11 N.C.
10 DNC
9 RSEL
8 GND
1 234567
*EXPOSED PAD.
THIN QFN
(5mm × 5mm × 0.8mm)
PIN
1
2
3
4
5
6
7
8, 18, 21
9
10
11, 15, 23,
24, 25
NAME
RSELOUT
SCL
SDA
FAULT
LOS1
INX
LOS2
GND
RSEL
DNC
N.C.
FUNCTION
Rate-Select Output
I2C Serial-Clock Input
I2C Serial-Data Input/Output
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.
PIN
12, 13
14, 17
16, 26
19
20
22
27
28
—
Pin Description
NAME
RSSI2P,
RSSI2N
RSSI1P,
RSSI1N
VCC
DAC2
DAC1
REFIN
LOSOUT
OUTX
EP
FUNCTION
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)
10
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