Delta Electronics SFBD-1250A4Q1R - Manual (Page 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
CC
A mA Note (1)
Differential line input Impedance R
IN
90 100 110 Ohm
Differential Data Input Swing V DT 400 1600 mV
p-p
Note (2)
Transmitter Disable Input-High V
DISH
2 V
CC
V
Transmitter Disable Input-Low V
DISL
0 0.8 V
LVTTL
Receiver
Total Supply Current
I
CC
B mA Note (1)
Differential Data Output Swing V DR 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
1 VeeR Receiver Ground
2 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)
Rx
5 O RD(p) Non-Inverted Receiver Data Output (AC-Coupled CML output)
6 VccT +3.3V Transmitter Power Supply
7 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)
Tx
10 I TD(n) Inverted Transmitter Data Input (AC-Coupled LVPECL input)
MS Mounting studs/ connect this pin to Chassis ground
Note (1). EMI shielding lead must be connected to Signal ground
Bottom View
MS
MS