DS1864 datasheet(13/72 Pages) DALLAS

13 / 72 page

SFP Laser Controller and

Diagnostic IC

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Pin Description

PIN NAME

DESCRIPTION

RSELOUT

Open-Drain Rate-Select Output

SDA

I2C Serial Data Input/Output

SCL

I2C Serial Clock Input

INTX-F

TX-F Input from External Device

INLOS

Loss of Signal Input from External Device

IN1

Digital Input

N.C.

No Connection

N.C.

No Connection

GND

Ground. All GND pins must be connected.

TX-D

Transmit Disable Input. Places DAC0 and DAC1 in high-impedance state.

RSEL

Rate Select Logic Input

MON3N

Voltage Monitor Input, Low Side. Used typically for RSSI.

MON3P

Voltage Monitor Input, High Side. Used typically for RSSI.

MON2

Voltage Monitor Input. Used typically for Transmit Power (TXP).

N.C.

No Connection

MON1N

Voltage Monitor Input, Low Side. Used typically for Bias Sense Current (IBIAS).

MON1P

Voltage Monitor Input, High Side. Used typically for Bias Sense Current (IBIAS).

DAC1

Lookup Table-Controlled Current Sink

GND

Ground. All GND pins must be connected.

DAC0

Lookup Table-Controlled Current Sink

VCC

Power Supply. All VCC pins must be connected.

N.C.

No Connection

GND

Ground. All GND pins must be connected.

FETG

Logic Output Driving External FET

TX-F

Open-Drain Fault Output

RX-LOS

Open-Drain Loss of Signal Output

OUT1

Open-Drain Digital Output

VCC

Power Supply. All VCC pins must be connected.

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