Page 1
GBIC-1250 Long Distance Series 
RoHS Compliant 1250Mbps Gigabit Interface Converters (GBIC)  
Transceiver Module for Gigabit Ethernet
Description  
The GBIC-1250xxxx families are compliant with GBIC 
interface converters specification Rev. 5.4. as well as 
Gigabit Ethernet standard as specified in IEEE 802.3.   
Features  
z    Compliant with Gigabit Interface 
Converter (GBIC) Revision 5.4 
z    Compliant with proposed specifications 
for IEEE 802.3z/Gigabit Ethernet. 
z    Dual 5V and 3.3V Power Supply 
Operation 
z    TTL Logic TX_DISABLE / TX_FAULT / 
RX_LOS functions 
z   Class 1 Laser Product Compliant with  
the Requirements of IEC 60825-1 and 
IEC 60825-2
z   Hot-Pluggable   
z   RoHS Compliant per Directive  
2002/95/EEC 
Applications  
z 1.25 Gigabit Ethernet  
z Fiber Channel  
Delta’s GBIC transceiver family uses a 20-pin connector 
to allow hot plug capability. The system designer can 
make configuration changes or maintenance simply by 
plugging in different type of converters without removing 
the power supply from the host system. 
Performance 
GBIC-1250B5LR: 
1310nm MQW DFB laser, up to 25km in SMF 
GBIC-1250D5MR: 
1550nm MQW DFB laser, up to 40km in SMF 
GBIC-1250D5WR: 
1550nm MQW DFB laser, up to 70km in SMF 
GBIC-1250D5RR: 
1550nm MQW DFB laser, up to 80km in SMF 
GBIC-1250D5VR: 
1550nm MQW DFB laser, up to 100km in SMF
DELTA ELECTRONICS, INC. 
1 01/23/2008
Rev. 0F
www.deltaww.com
Page 2
GBIC-1250 Long Distance Series 
Absolute Maximum Ratings  
Parameter Symbol  Min. 
Storage Temperature   Ts   -40      85   ºC    
Supply Voltage   VCC  0  6 V 
Recommended Operating Conditions 
Parameter Symbol 
Ambient Operating Temperature   T
A
-5 70 
℃  
Notes  
Supply voltage   Vcc   3.15 / 4.75  3.3 / 5  3.45 / 5.25   V    
Total Supply Current   I 
Data Output Load   R
S
DL
 300 
Ω  
Transmitter Electro-Optical Performance Specifications: 
(TA=-5 °C to 70 °C, VCC=3.15V to 3.45V or V
Parameter Symbol  Min. 
Transmitter 
Transmitter Differential Input Voltage   VDT  0.5  2.4 V   1 
Transmitter Disable Input-High   V 
Transmitter Disable Input-Low   V 
Transmitter Fault Pull up Resistor   R 
Transmitter Fault Output-High   V 
Transmitter Fault Output-Low   V
Receiver 
Receiver Differential Output Voltage   VDR  0.35    2   V 3 
Receiver LOS Load   R 
LOS Output Voltage-High   V 
LOS Output Voltage-Low   V 
Output Dara Rise / Fall Time   tr / t
Notes: 
1. Internally AC coupled and terminated to 150Ohm differential load. 
2. Pull up to V
 on host Board  
CC
3. Internally AC coupled, but requires a 150Ohm differential termination at or internal to Serializer/ 
Deserializer. 
4. These are 20%~80% values. 
=4.75V to 5.25V) 
CC
DISH
DISL
TX_FAULT
TXFH
TXFL
RXLOS
LOSH
LOSL
f
2   V  
0 0.8 V    
4.7 10 kΩ  2 
2   V 2 
0 0.8 V   2 
4.7 10 kΩ  2 
2   V 2 
0 0.8 V   2 
 220 
DELTA ELECTRONICS, INC. 
2 01/23/2008
Rev. 0F
www.deltaww.com
Page 3
GBIC-1250 Long Distance Series 
Optical Characteristics  
(TA=-5 °C to 70 °C, VCC=3.15V to 3.45V or VCC=4.75V to 5.25V, Data Rate=1250Mb/sec, PRBS=27-1NRZ)
Parameter Symbol 
Transmitter  
Output Optical Power (Avg.) 
GBIC-1250B5LR 
GBIC-1250D5MR 
GBIC-1250D5WR 
P
O
GBIC-1250D5RR 
GBIC-1250D5VR 
Optical Extinction Ratio   ER   9         dB    
Center Wavelength 
GBIC-1250B5 Series 
λ
C
GBIC-1250D5 Series 
Spectral Width  
Optical Rise/ Fall Time 
σ  
t
r/tf
Receiver 
Optical input sensitivity (avg.) 
GBIC-1250B5LR 
GBIC-1250D5MR 
GBIC-1250D5WR 
P
IN
GBIC-1250D5RR 
GBIC-1250D5VR 
Optical input saturation (avg.) 
GBIC-1250B5 Series 
GBIC-1250D5 Series 
P
SAT
GBIC-1250D5VR 
Optical Wavelength 
λ  
LOS - Deasserted (avg.) 
GBIC-1250B5LR 
GBIC-1250D5MR 
GBIC-1250D5WR 
P
A
GBIC-1250D5RR 
GBIC-1250D5VR 
LOS - Asserted (avg.)   P 
LOS - Hysteresis   PA -P
D
D
Note: 
1. The sensitivity is provided at a BER of 1×10
-1 PRBS and ER=9dB. 
2. These are 20%~80% values  
1Y3
1
1Y
0. 
Y
-Y
-4 
-5 
-3 
0 
0 
1274 
1530 
1310 
1550 
1 
0 
2 
5 
5 
1355 
1570 
dBm 
nm 
 1 nm  
 260 
-23 
-22 
-24 
dBm 1 
-24 
-29 
-1 
-1 
 dBm 
-9 
1270  1570 nm 
-23 
-22 
-24 
dBm 
-24 
-29 
-40  dBm 
0.5   dB 
-12
 or better with an input signal consisting of 1250Mb/s, 2
1
1X
0  XX
1X
ormalized  
7 
DELTA ELECTRONICS, INC. 
3 01/23/2008
Rev. 0F
www.deltaww.com
Page 4
GBIC-1250 Long Distance Series 
Pin Out Table  
Pin Name   Pin#   Sequence   Sequence   Pin#   Pin Name 
RX_LOS 1   2   1 11 RGND 
RGND 2 2   1 12 -RX_DAT 
RGND 3 2   1 13 +RX_DAT 
MOD_DEF(0) 4   2 1   14   RGND 
MOD_DEF(1) 5   2 2   15   VDDR 
MOD_DEF(2) 6   2 2   16   VDDT 
TX_DISABLE 7   2 1   17   TGND 
TGND 8 2   1 18 +TX_DAT 
TGND 9 2   1 19 -TX_DAT 
TX_FAULT 10   2   1   20   TGND 
Overview of internal interface signal Definition 
Pin Name   Pin #   Name/Function   Signal Specification 
Receiver Signals 
RGND   2,3,11,14 Receiver Ground (may be connected with TGND in GBIC)   Ground, to GBIC 
VDDR   15   Receiver +5 volt (may be connected with VDDT in GBIC)   Power, to GBIC 
-RX_DAT   12   Receive Data, Differential PECL 
+RX_DAT   13   Receive Data, Differential PECL 
RX_LOS 1 
Transmitter Signals 
TGND   8,9,17,20 Transmitter Ground (may be connected with RGND internally) Ground, to GBIC 
VDDT   16   Transmitter +5 volt (may be connected with VDDR in GBIC)   Power, to GBIC 
+TX_DAT   18   Transmit Data, Differential PECL   High speed serial, to GBIC 
-TX_DAT   19   Transmit Data, Differential PECL   High speed serial, to GBIC 
TX_DISABLE 7 
TX_FAULT 10 
Control Signals 
MOD_DEF(0) 4 
MOD_DEF(1) 5 
MOD_DEF(2) 6 
Receiver Loss of Signal, logic high, open collector 
compat-ible,4.7 K to 10 K Ohm pullup to VDDT on host 
Transmitter Disable, logic high, open collector compatible,4.7 
K to 10 K Ohm pullup to VDDT on GBIC 
Transmitter Fault, logic high, open collector compatible,4.7 K 
to 10 K Ohm pullup to VDDT on host 
GBIC module definition and presence, bit 0,4.7 K to 10 K Ohm 
pullup to VDDT on host 
GBIC module definition and presence, bit 1,4.7 K to 10 K Ohm 
pullup to VDDT on host 
GBIC module definition and presence, bit 2,4.7 K to 10 K Ohm 
pullup to VDDT on host 
High speed serial, from 
GBIC 
High speed serial, from 
GBIC 
Low speed, from GBIC 
Low speed, to GBIC 
Low speed, from GBIC 
Low speed, from GBIC 
Low speed, from GBIC 
Low speed, from GBIC 
DELTA ELECTRONICS, INC. 
4 01/23/2008
Rev. 0F
www.deltaww.com
Page 5
Recommend Circuit Schematic 
GBIC-1250 Long Distance Series 
DELTA ELECTRONICS, INC. 
5 01/23/2008
Rev. 0F
www.deltaww.com
Page 6
GBIC-1250 Long Distance Series 
GBIC module definition parameters
Module 
Definition 
MOD_DEF(0) 
Pin 4 
0   NC   NC   NC   GBIC not present clause  
1 NC NC 
2   NC TTL 
3   NC   TTL LOW   TTL LOW Optical LW, 1.0625 Gbd 100-SM-LC-L 
4   TTL LOW   SCL   SDA   Serial module definition protocol 
5 TTL 
6   TTL LOW   TTL LOW   NC 
7   TTL LOW   TTL LOW   TTL LOW 
MOD_DEF(1) 
Pin 5 
MOD_DEF(2)
Pin 6 
Interpretation by host Reference  
Copper Style 1 or Style 2 connector, 1.0625 Gbd, 
100-TW-EL-S or 100-TP-EL-S, active 
inter-enclosure connection and IEEE802.3 
1000BASE-CX 
Copper Style 1 or Style 2 connector, 1.0625 Gbd, 
100-TW-EL-S, or 100-TP-EL-S, active or passive 
intra-enclosure connection  
Optical SW, 1.0625 Gbd 100-M5-SN-I or 
100-M6-SN-I 
Optical LW, 1.0625 Gbd 100-SM-LC-L and similar 
to 1.25 Gbd IEEE802.3z 1000BASE-LX, single 
mode 
Optical SW, 1.0625 Gbd 100-M5-SN-I or 
100-M6-SN-I and 1.25 Gbd, IEEE 802.3z, 
1000BASE-SX 
GBIC timing parameters for GBIC management 
Parameter Symbol 
TX_DISABLE assert time   t_off      10  µsec 
TX_DISABLE negate 
time 
Time to initialize, 
includes reset of 
TX_FAULT 
TX_FAULT from fault to 
assertion 
TX_DISABLE time to 
start reset 
RX_LOS assert delay    t_loss_on      100 µsec 
RX_LOS negate delay   t_loss_off      100 µsec 
t_on 1 
t_init 300 msec
t_fault 100 µsec 
t_rest 10   µsec TX_DISABLE HIGH before TX_DISABLE set LOW 
Rising edge of TX_DISABLE to fall of output signal 
below 10% of nominal 
Falling edge of TX_DISABLE to rise of output 
signal above 90% of nominal 
From power on or hot plug fter V DD T > 4.75 volts 
or From negation of TX_DISABLE during reset of 
TX_FAULT. 
From occurrence of fault (out-put safety violation or 
V DD T < 4.5 volts) 
From detection of loss of signal to assertion of 
RX_LOS 
From detection of presence of signal to negation of 
RX_LOS 
DELTA ELECTRONICS, INC. 
6 01/23/2008
Rev. 0F
www.deltaww.com
Page 7
GBIC timing parameters:
GBIC-1250 Long Distance Series 
DELTA ELECTRONICS, INC. 
7 01/23/2008
Rev. 0F
www.deltaww.com
Page 8
GBIC-1250 Long Distance Series 
GBIC-1250B5LR EEPROM Serial ID Memory Contents (2-Wire Address A0h) 
Address 
Hex ASCII 
00 01  25 20   5 75 SN   100 00  125  00   
01 04  26 20   L 76 SN  101 00  126  00   
02 01  27 20   R 77 SN   102 00  127  00   
03 00  28 20   A 81 SN  106 00     
07 80  32 20    107 00     
08 10  33 20    108 00     
09 01  34 20   109 00     
10 01  35 20    87 DC  112 00       
13 00  38 00  63 C8 Note   88 DC   113 00     
14 19  39 00  64 00  89 DC   114 00     
15 FA  40 47 G 65 1A   90 DC   115 00    
16 00  41 42 B 66 05   91 DC   116 00       
17 00  42 49 I 67 05   92 00   117 00       
18 00  43 43 C 68 SN Note   93 00   118 00       
19 00  44 2D - 69 SN   94 00   119 00       
20 44 D 45 31 1 70 SN  95 CS2 Note   120 00       
21 45 E 46 32 2 71 SN   96 00   121 00       
22 4C L 47 35 5 72 SN  97 00   122 00       
23 54 T 48 30 0 73 SN   98 00   123 00       
24 41 A 49 42 B 74 SN   99 00   124 00       
Address 
Hex ASCII 
Address
Hex ASCII
Address
Hex ASCII
Address
Hex ASCII 
Address
Hex ASCII
GBIC-1250D5MR EEPROM Serial ID Memory Contents (2-Wire Address A0h) 
Address 
Hex ASCII 
00 01  25 20   5 75 SN   100 00  125  00   
01 04  26 20   M 76 SN  101 00  126  00   
02 01  27 20   R 77 SN   102 00  127  00   
03 00  28 20   A 81 SN  106 00     
07 80  32 20    107 00     
08 10  33 20    108 00     
09 01  34 20   109 00     
10 01  35 20    87 DC   112 00       
13 00  38 00  63 D0 Note   88 DC   113 00     
14 28  39 00  64 00  89 DC   114 00     
15 FF  40 47 G 65 1A   90 DC   115 00    
16 00  41 42 B 66 05   91 DC   116 00       
17 00  42 49 I 67 05   92 00   117 00       
18 00  43 43 C 68 SN Note   93 00   118 00       
19 00  44 2D - 69 SN   94 00   119 00       
20 44 D 45 31 1 70 SN  95 CS2 Note   120 00       
21 45 E 46 32 2 71 SN   96 00   121 00       
22 4C L 47 35 5 72 SN  97 00   122 00       
23 54 T 48 30 0 73 SN   98 00   123 00       
24 41 A 49 44 D 74 SN   99 00   124 00       
Notes: 
1) Byte 63: Check sum of bytes 0-62. 
2) Byte 68-83 (SN): Serial number. 
3) Byte 84-91 (DC): Date code. 
4) Byte 95 (CS2): Check sum of bytes 64-94. 
Address 
Hex ASCII 
Address
Hex ASCII
Address
Hex ASCII
Address
Hex ASCII 
Address
Hex ASCII
DELTA ELECTRONICS, INC. 
8 01/23/2008
Rev. 0F
www.deltaww.com
Page 9
GBIC-1250 Long Distance Series 
GBIC-1250D5WR EEPROM Serial ID Memory Contents (2-Wire Address A0h) 
Address 
Hex ASCII 
00 01  25 20   5 75 SN   100 00  125  00   
01 04  26 20   W 76 SN  101 00  126  00   
02 01  27 20   R 77 SN   102 00  127  00   
03 00  28 20   A 81 SN  106 00     
07 80  32 20    107 00     
08 10  33 20    108 00     
09 01  34 20   109 00     
10 01  35 20    87 DC   112 00       
13 00  38 00  63 F8 Note   88 DC   113 00     
14 46  39 00  64 00  89 DC   114 00     
15 FF  40 47 G 65 1A   90 DC   115 00    
16 00  41 42 B 66 05   91 DC   116 00       
17 00  42 49 I 67 05   92 00   117 00       
18 00  43 43 C 68 SN Note   93 00   118 00       
19 00  44 2D - 69 SN   94 00   119 00       
20 44 D 45 31 1 70 SN  95 CS2 Note   120 00       
21 45 E 46 32 2 71 SN   96 00   121 00       
22 4C L 47 35 5 72 SN  97 00   122 00       
23 54 T 48 30 0 73 SN   98 00   123 00       
24 41 A 49 44 D 74 SN   99 00   124 00       
Address 
Hex ASCII 
Address
Hex ASCII
Address
Hex ASCII
Address
Hex ASCII 
Address
Hex ASCII
GBIC-1250D5RR EEPROM Serial ID Memory Contents (2-Wire Address A0h) 
Address 
Hex ASCII 
00 01  25 20   5 75 SN   100 00  125  00   
01 04  26 20   R 76 SN   101 00  126  00   
02 01  27 20   R 77 SN   102 00  127  00   
03 00  28 20   A 81 SN  106 00     
07 80  32 20    107 00     
08 10  33 20    108 00     
09 01  34 20   109 00     
10 01  35 20    87 DC   112 00       
13 00  38 00  63 FD Note   88 DC  113 00     
14 50  39 00  64 00  89 DC   114 00     
15 FF  40 47 G 65 1A   90 DC   115 00    
16 00  41 42 B 66 05   91 DC   116 00       
17 00  42 49 I 67 05   92 00   117 00       
18 00  43 43 C 68 SN Note   93 00   118 00       
19 00  44 2D - 69 SN   94 00   119 00       
20 44 D 45 31 1 70 SN  95 CS2 Note   120 00       
21 45 E 46 32 2 71 SN   96 00   121 00       
22 4C L 47 35 5 72 SN  97 00   122 00       
23 54 T 48 30 0 73 SN   98 00   123 00       
24 41 A 49 44 D 74 SN   99 00   124 00       
Notes: 
1) Byte 63: Check sum of bytes 0-62. 
2) Byte 68-83 (SN): Serial number. 
3) Byte 84-91 (DC): Date code. 
4) Byte 95 (CS2): Check sum of bytes 64-94. 
Address 
Hex ASCII 
Address
Hex ASCII
Address
Hex ASCII
Address
Hex ASCII 
Address
Hex ASCII
DELTA ELECTRONICS, INC. 
9 01/23/2008
Rev. 0F
www.deltaww.com
Page 10
GBIC-1250 Long Distance Series 
GBIC-1250D5VR EEPROM Serial ID Memory Contents (2-Wire Address A0h) 
Address 
Hex ASCII 
00 01  25 20   5 75 SN   100 00  125  00   
01 04  26 20   V 76 SN  101 00  126  00   
02 01  27 20   R 77 SN   102 00  127  00   
03 00  28 20   A 81 SN  106 00     
07 80  32 20    107 00     
08 10  33 20    108 00     
09 01  34 20   109 00     
10 01  35 20    87 DC   112 00       
13 00  38 00  63 15 Note   88 DC   113 00     
14 64  39 00  64 00  89 DC   114 00     
15 FF  40 47 G 65 1A   90 DC   115 00    
16 00  41 42 B 66 05   91 DC   116 00       
17 00  42 49 I 67 05   92 00   117 00       
18 00  43 43 C 68 SN Note   93 00   118 00       
19 00  44 2D - 69 SN   94 00   119 00       
20 44 D 45 31 1 70 SN  95 CS2 Note   120 00       
21 45 E 46 32 2 71 SN   96 00   121 00       
22 4C L 47 35 5 72 SN  97 00   122 00       
23 54 T 48 30 0 73 SN   98 00   123 00       
24 41 A 49 44 D 74 SN   99 00   124 00       
Notes: 
5) Byte 63: Check sum of bytes 0-62. 
6) Byte 68-83 (SN): Serial number. 
7) Byte 84-91 (DC): Date code. 
8) Byte 95 (CS2): Check sum of bytes 64-94. 
Address 
Hex ASCII 
Address
Hex ASCII
Address
Hex ASCII
Address
Hex ASCII 
Address
Hex ASCII
DELTA ELECTRONICS, INC. 
10 01/23/2008
Rev. 0F
www.deltaww.com
Page 11
Package Outline Drawing 
GBIC-1250B5LR  
GBIC-1250 Long Distance Series 
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DELTA ELECTRONICS, INC. 
11 01/23/2008
Rev. 0F
www.deltaww.com
Page 12
Regulatory Compliance 
Test Item   Reference   Qty’  Evaluation  
(#1)  
Electromagnetic Interference 
EMC 
FCC Class B 
EN 55022 Class B 
CISPR 22 
GBIC-1250 Long Distance Series 
5 
(#2) Immunity:  
Radio Frequency 
Electromagnetic Field 
(#3) Immunity:  
Electrostatic Discharge to the 
Duplex SC Receptacle 
(#4) Electrostatic Discharge to 
the Electrical Pins 
EN 61000-4-3 
IEC 1000-4-3 
EN 61000-4-2 
IEC 1000-4-2  
IEC 801.2 
MIL-STD-883C 
Method 3015.4 
EIAJ#1988.3.2B 
Version 2, 
Machine model 
Ordering information for GBIC modules  
GBIC-1250X1X2X3X
X1:  Light source types 
A: Multi-mode  
B: 1310nm Single-mode 
D: 1550nm Single-mode 
X2:  Power Supply Voltage 
5: 3.3 and 5V 
4
5 
(1) Satisfied with electrical characteristics of 
product spec. 
5 
(2) No physical damage 
5 
X3: Distance: 
L: 25km 
M: 10km 
W: 70km 
R: 80km 
V: 100km 
X4: R: RoHS Compliant 
Others: customized parts 
Available Products  
z   GBIC-1250A5FR : Dual supply voltage (3.3/5V), 850nm VCSEL, 50um MMF 500m. 
z   GBIC-1250B5QR : Dual supply voltage (3.3/5V), 1310nm MQW FP LD, SMF 10km. 
12 01/23/2008
DELTA ELECTRONICS, INC. 
www.deltaww.com
Rev. 0F