HFBR-0527P Avago Technologies US Inc., HFBR-0527P Datasheet - Page 9

• Manufacturer Part Number: HFBR-0527P
• Description: Fiber Optics, Evaluation Kit
• Manufacturer: Avago Technologies US Inc.

Specifications of HFBR-0527P

• Kit Contents: TX/RX Mods, Cable, Pol Kit, SW, Pwr. Sup
• Tool / Board Applications: Fiber Optic Transceivers
• Mcu Supported Families: HFBR-1527, HFBR-2526
• Main Purpose: Interface, Fiber Optics
• Embedded: No
• Utilized Ic / Part: HFBR-1527, HFBR-2526
• Primary Attributes: 125MBd, Communication up to 25m
• Secondary Attributes: 650nm LED, 1mm POF
• Description/function: Fiber Optic Kit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: HFBR-1527, HFBR-2526
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 516-2143; HFBR-0527P

Figure 8. Fiber Optic Transceiver Using Surface Mount Components
Local Area Network Links
High speed LANs such as FDDI and ATM have adopted a
common footprint +5 V ECL transceiver, often referred to
as a “1X9 transceiver”. The circuit in Figure 8 matches the
electrical functions of these industry standard transceivers,
with the exception that there is no signal detect function in
the Figure 8 circuit (pin 4 is nonfunctional). Therefore, the
recommended circuit can be directly inserted into boards
designed for 1X9 transceivers and used as a lower-cost
alternative to the industry standard 1300 nm transceivers.
If the MC10H116 comparator is replaced with a Signetics
NE5224 IC, the signal detect function can also be imple-
mented, at a total transceiver cost that is slightly higher
than the MC10H116 circuit, but still significantly less than
half the cost of an integrated 1300 nm 1X9 transceiver.
9
NOTES:
9
8
7
6
5
4
3
2
1
+
(1) ALL CAPACITORS ARE IN µF WITH ±10% TOLERANCE UNLESS OTHER WISE NOTED.
(2) ALL RESISTORS ARE IN OHMS WITH ±5% TOLERANCE UNLESS OTHER WISE NOTED.
5439-8
C14
R21
R20
10
62
12
U5
TL431
CD
BFT92
+
Q1
R6
91
C20
10
R5
22
Q2
R7
91
BFT92
19
18
U4C
74ACTQ00
R25
R24
0.001
1K
1K
C1
2
1
15
17
U1A
V BB
V BB
7
TDK #HF30ACB453215
0.1
C2
R23
1K
R22
1K
3
C15
0.1
C16
0.1
L1
10
12
13
9
4
5
74ACTQ00
R18
R19
51
51
U1C
U1D
U1B
+3V
+3V
4
14
3
MC10H116
U4A
10
FN
Lower speed LANs such as Ethernet and Token Ring
typically use TTL ICs. The circuit of Figure 8 can easily be
modified for TTL I/O for such networks. Also note that the
HFBR-25X6Z receiver will work well with the Micro Linear
ML4622/4624 quantizer ICs designed specifically for Ether-
net and Token Ring.
The fiber optic data links described in this note will not be
interoperable with the available industry standard trans-
ceivers, and do not conform to the specifications of IEEE or
ANSI LAN standards as currently defined. However, these
fiber optic links can be used in proprietary systems where
a lower-cost, fiber optic solution is desired.
8
11
6
5
7
0.1
C3
MMBT
3904
LT1
R17
R16
51
51
C18
C17
0.1
0.1
Q3
8
9
C8
0.001
C4
20
U4B
C19 0.1
V BB
14
2
13
12
+
C5
10
R14
R15
R10
1K
1K
C10
0.1
R8
R9
15
R8
R9
R11
C8
V BB
R12
0.1
4.7
C6
C11
C12
C13
0.1
0.1
301 Ω
301 Ω
1K Ω
43 pF
0.1
POF
R11
0.001
R13
C7
4.7
HCS™
82.5 Ω
82.5 Ω
475 Ω
120 pF
1
2
3
4
1
2
3
4
TOLERANCE
HFBR-
25X6Z
HFBR-
15X7Z
0.47
C9
1%
1%
1%
5%
8
5
8
5
U3
U2