Turns Ratio
Insertion Loss
Return Loss
Crosstalk
Differential to Common
Part
(5%)
(dB MAX)
(dB MIN)
(dB MIN)
Mode Rejection
Hipot
Number
(db MIN)
(Vrms MIN)
Receive
Transmit
100 kHz100 MHz
30 MHz
60 MHz
80 Mhz
30 MHz 60 MHz
80 Mhz
30 MHz 60 MHz 100 MHz
H1267
1CT:1CT
1CT:1CT
-1.0
-16
-12
-12
-40
-40
-35
-42
-37
-33
1500
10/100BASE-T SINGLE PORT,
SMT TRANSFORMER
For Fast Ethernet to Gigabit Ethernet
Interchangeable Designs
USA 858 674 8100
UK 44 1483 401 700
France 33 3 84 35 04 04
Singapore 65 6287 8998
Shanghai
86 21 32181071
China 86 769 5538070
Taiwan 886 2 26980228
www.pulseeng.com
1
H342.B (8/05)
Meets IEEE802.3 and ANSI X3.263 standards,
including 350 H OCL with 8 mA DC bias
Pin-compatible to Pulse Gigabit Ethernet part
numbers H5004 and H5007
Electrical Specifications @ 25C -- Operating Temperature 0C to +70C
Weight . . . . . . . . . .2.7 grams
Tape & Reel . . . . . . .300/reel
Tube . . . . . . . . . . . . .25/tube
Dimensions: Inches
mm
Unless otherwise specified all tolerances are .010.
0,25
.500
12,70
.650
16,51
.550
13,97
11X .050
1,27
24X .030
0,76
DATE CODE CNTRY OF MFG
.690
17,53
.550
13,97
11X .050
1,27
24X .020
0,51
.480
12,20
.630
16,00
.225
5,51
.004
24 SURFACES
.010
0,25
24X .045
1,14
08
When ordering Tape & Reel packaging add the suffix "T" to the part number, such as "H1267T."
Mechanical
H1267
10/100BASE-T SINGLE PORT,
SMT TRANSFORMER
For Fast Ethernet to Gigabit Ethernet
Interchangeable Designs
USA 858 674 8100
UK 44 1483 401 700
France 33 3 84 35 04 04
Singapore 65 6287 8998
Shanghai
86 21 32181071
China 86 769 5538070
Taiwan 886 2 26980228
www.pulseeng.com
2
H342.B (8/05)
Application Notes
The Fast Ethernet to Gigabit Ethernet interchangeable
design is a design concept that allows design engineers
to design a network applications board that can support
both Fast Ethernet (10/100Base-T) and Gigabit Ethernet
(1000Base-T) applications by simply replacing several
components without having to re-design the whole board.
Two components that play a part in this design are the
Ethernet silicon and the transformer. Both the silicon and
the transformer for both 10/100 and gigabit must have
footprint compatibility. This footprint compatibility will
mean a single board layout for the interface between the
Ethernet silicon and the transformer of either 10/100 or
gigabit applications.
Presently, if a network design engineer wants to design a
10/100 card, he would have to choose a 10/100
transformer. If the engineer wants to design a gigabit
card, he would have to choose a gigabit transformer. This
leads to two different designs (board layout) for two
different applications.
The objective of interchangeable design is to allow the
engineer to utilize the same design (and board layout) for
10/100 and for a gigabit design (and vice versa) with
minimal change as possible to the design.
TRANSMIT
TDC
1
TD
+
2
TD
-
3
RDC
4
RD
+
5
RD
-
6
RECEIVE
24
TCT
23
TX
+
22
TX
-
21
RCT
2
0
RX
+
19
RX
-
18
17
16
15
14
13
1
:
1
1
:
1
Schematic
H1267
10/100BASE-T SINGLE PORT,
SMT TRANSFORMER
For Fast Ethernet to Gigabit Ethernet
Interchangeable Designs
USA 858 674 8100
UK 44 1483 401 700
France 33 3 84 35 04 04
Singapore 65 6287 8998
Shanghai
86 21 32181071
China 86 769 5538070
Taiwan 886 2 26980228
www.pulseeng.com
3
H342.B (8/05)
EFI Capicitor
(1000 pF, 2 kV)
Fast Ethernet Circuit
1
2
3
4
5
6
7
8
H1267
CHIP SIDE
CABLE SIDE
(2X 0.01 F)
4X 75 W
Application Circuit
H1267
The above circuit is a simple interface for a Fast Ethernet tranformer connecting to both the Fast Ethernet silicon and the RJ-45 connector. In order
to design a gigabit application, simply replace the Fast Ethernet Silicon, the Fast Ethernet transformer and the rest of the passive components with a
gigabit ethernet silicon, a gigabit transformer and the rest of the passive components.
It is highly recommended that the cable side Center Taps of each transformer be terminated to 75
resistors and that the four center taps be
terminated to an EFI capacitor prior to ground termination.
10/100BASE-T SINGLE PORT,
SMT TRANSFORMER
For Fast Ethernet to Gigabit Ethernet
Interchangeable Designs
USA 858 674 8100
UK 44 1483 401 700
France 33 3 84 35 04 04
Singapore 65 6287 8998
Shanghai
86 21 32181071
China 86 769 5538070
Taiwan 886 2 26980228
www.pulseeng.com
4
H342.B (8/05)
Application Circuit
H5004
The above circuit is a simple interface for a gigabit transformer connectiong to both the Gigabit Ethernet silicon and the RJ-45 connector.
It is highly recommended that the cable side Center Taps of each transformer be terminated to 75
resistors and that the four center taps be
terminated to an EFI capacitor prior to ground termination.
EFI Capicitor
(1000 pF, 2 kV)
Gigabit Circuit
H5004
CHIP SIDE
CABLE SIDE
1
2
3
4
5
6
7
8
(4X 0.01 F)
4X 75 W
Gigabit Circuit
H5007
EFI Capicitor
(1000 pF, 2 kV)
CHIP SIDE
CABLE SIDE
1
2
3
4
5
6
7
8
(4X 0.01 F)
4X 75 W
10/100BASE-T SINGLE PORT,
SMT TRANSFORMER
For Fast Ethernet to Gigabit Ethernet
Interchangeable Designs
Application Circuit
H5007
The above circuit is a simple interface for a gigabit transformer connectiong to both the Gigabit Ethernet silicon and the RJ-45 connector.
It is highly recommended that the cable side Center Taps of each transformer be terminated to 75
resistors and that the four center taps be
terminated to an EFI capacitor prior to ground termination.
www.pulseeng.com
5
H342.B (8/05)
For More Information:
Pulse Worldwide
Headquarters
12220 World Trade Drive
San Diego, CA 92128
U.S.A.
www.pulseeng.com
TEL: 858 674 8100
FAX: 858 674 8262
Pulse
Northern Europe
3 Huxley Road
Surrey Research Park
Guildford, Surrey GU2 5RE
United Kingdom
TEL: 44 1483 401700
FAX: 44 1483 401701
Pulse
Southern Europe
Zone Industrielle
F-39270
Orgelet
France
TEL: 33 3 84 35 04 04
FAX: 33 3 84 25 46 41
Pulse South Asia
150 Kampong Ampat
#07-01/02
KA Centre
Singapore 368324
TEL: 65 6287 8998
FAX: 65 6280 0080
Pulse North Asia
3F-4, No. 81, Sec. 1
Hsin Tai Wu Road
Hsi-Chih
Taipei Hsien
Taiwan
TEL: 886 2 26980228
FAX: 886 2 26980948
Pulse
China Headquarters
No. 1
Industrial District
Changan, Dongguan
China
TEL: 86 769 5538070
FAX: 86 769 5538870
Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product
names mentioned herein may be trademarks or registered trademarks of their respective owners.
Copyright, 2005. Pulse Engineering, Inc. All rights reserved.
Pulse North China
Room 1002
No. 819
Nanjing West Rd
Shanghai
China
TEL: 86 21 32181071
FAX: 86 21 32181396
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