Delta-electronics SFBD-1250A4Q1R Manual de usuario descargar pdf (Pagina 4)

SFBD-1250A4Q1R

DELTA ELECTRONICS, INC.

4 Revision: S0

04/12/2007

www.deltaww.com

5. Electrical Interface Characteristics

Parameter Symbol Min. Typ. Max. Unit Note

Transmitter

Total Supply Current I

A mA Note (1)

Differential line input Impedance R

90 100 110 Ohm

Differential Data Input Swing VDT 400 1600 mV

p-p

Note (2)

Transmitter Disable Input-High V

DISH

2 V

Transmitter Disable Input-Low V

DISL

0 0.8 V

LVTTL

Receiver

Total Supply Current I

B mA Note (1)

Differential Data Output Swing VDR 400 800 1200 mV

p-p

Note (2)

Signal Detect Output Voltage-High V

LOSH

2 Vcc+0.3 V

Signal Detect Output Voltage-Low V

LOSL

0 0.8 V

Note (3)

Note (1). A (TX)+ B (RX) = 300mA (Not include termination circuit)

Note (2). Internally AC coupled, but requires a 100Ohm differential termination at or internal to Serializer/

Deserializer.

Note (3). LVTTL logic output, internal 4.7K~10K Ohm pull-up resistor. External load on host board is

unnecessary.

6. Pin Description

Tx/Rx Pin No. I/O Pin Name Description

VeeR

Receiver Ground

VccR

+3.3V Receiver Power Supply

3 O

SD Normal Optical Input indicated by logic “High”, and No Optical

Input indicated by logic “Low”. (LVTTL)

4 O

RD(n)

Inverted Receiver Data Output (AC-Coupled CML output)

5 O

RD(p)

Non-Inverted Receiver Data Output (AC-Coupled CML output)

VccT

+3.3V Transmitter Power Supply

VeeT

Transmitter Ground

8 I

Tx_Dis LVTTL Logic “High” to Disable Transmitter, and Enable

Transmitter by Logic “Low”.

9 I

TD(p)

Non-Inverted Transmitter Data Input (AC-Coupled LVPECL input)

10 I

TD(n)

Inverted Transmitter Data Input (AC-Coupled LVPECL input)

Mounting studs/ connect this pin to Chassis ground

Note (1). EMI shielding lead must be connected to Signal ground

Bottom View

1 2 3 4 5 6 7

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