© Coilcraft, Inc. 2010
Specifications subject to change without notice.
Please check our website for latest information.
© Coilcraft, Inc. 2010
Document 222-1
Document 222-1 Revised 11/20/10
These transformers have been designed to provide
optimum performance with the ADSL chip sets from a
variety of leading manufacturers.
They feature a compact size, minimum DC resistance
and very low leakage inductance. Primary inductance is
stable from -40°C to +85°C and the longitudinal balance
is optimized for the best overall performance at the
ADSL transmission speed. Most parts have been de-
signed to meet UL 1950 requirements.
For free evaluation samples or to discuss custom de-
signs, please contact Coilcraft.
1. All electrical specifications referenced to line side.
2. Operating temperature range -40°C to +85°C.
3. Electrical specifications at 25°C.
Line side Leakage
Part inductance inductance DCR max (Ohms)
number Style Chip set (mH) max (µH) Chip side Line side
AS8426-A Leaded Alcatel DynaMiTe MTK-20140 0.410 ± 10% 6.5 0.130 (10-8), 0.095 (9-7) 0.200 (1-3, 2-4)
AS8446-A SMT Alcatel DynaMiTe MTK-20140 0.410 ± 10% 6.5 0.130 (10-8), 0.095 (9-7) 0.200 (1-3, 2-4)
AS8696-B Leaded Alcatel DynaMiTe MTK-20140 0.442 ± 5% 5.0 0.375 (10-8), 0.310 (9-7) 0.425 (1-3, 2-4)
AS8697-B SMT Alcatel DynaMiTe MTK-20140 0.442 ± 5% 5.0 0.375 (10-8), 0.310 (9-7) 0.415 (1-3, 2-4)
AS8425-A Leaded Motorola MC145660/MS143462SK 3.96 ± 5% 18 2.42 (10-6), 1.87 (9-7) 2.53 (1-4, 2-5)
AS8397-B SMT Motorola MC145660/MS143462SK 3.96 ± 5% 18 2.42 (10-6), 1.87 (9-7) 2.53 (1-4, 2-5)
AS8578-A Leaded TI TNETD4000R/3000R 1.5 ± 5% 18 0.800 (1-4) 3.75 (10-7)
AS8579-A SMT TI TNETD4000R/3000R 1.5 ± 5% 18 0.800 (1-4) 3.75 (10-7)
Dielectric Longitudinal THD
Part strength Turns ratio Capacitance balance @ 20 kHz Designed
number (V) line:chip max (pF) min (dB) typ (dB) to meet
AS8426-A 3000 2:1 N/A 45 (30 kHz - 1.1 MHz) -77 UL 1950
AS8446-A 2300 2:1 N/A 45 (30 kHz - 1.1 MHz) -77 UL 1950
AS8696-B 3000 1:1 N/A 45 (30 kHz - 1.1 MHz) -84 UL 1950
AS8697-B 2300 1:1 N/A 45 (30 kHz - 1.1 MHz) -84 UL 1950
AS8425-A 1875 1.2:1 N/A 40 (20 kHz - 1.1 MHz) -92 UL 1950
AS8397-B 1875 1.2:1 N/A 40 (20 kHz - 1.1 MHz) -92 UL 1950
AS8578-A 1875 1.42:1 35.0 40 (20 kHz - 1.1 MHz) -85 UL 1950
AS8579-A 1875 1.42:1 35.0 40 (20 kHz - 1.1 MHz) -85 UL 1950
ADSL Transformers For Alcatel, Motorola
and TI chip sets
This product is not RoHS-compliant. Contact Coilcraft
for current status or possible alternatives.
© Coilcraft, Inc. 2010
Specifications subject to change without notice.
Please check our website for latest information.
© Coilcraft, Inc. 2010
Document 222-2 Revised 11/20/10
Document 222-2
ADSL Transformers for Alcatel, Motorola, TI
Schematics
Leaded Transformers
A max B max C max E F typ G typ
0.530 0.699 0.500 0.590 0.098 0.050 × 0.061
13,46 17,75 12,70 14,99 2,50 1,27 × 1,55
Surface Mount Transformers
AS8426-A, AS8446-A
AS8696-B, AS8697-B AS8425-A, AS8397-B AS8578-A, AS8579-A
4
5
6
7
1
2
10
9
Line
side
Chip
side
2
1
9
10
4
3
7
8
Line
side
Chip
side
77 44
1010 11
Line
side
Line
side
Chip
side
Chip
side
Recommended
Land Pattern
C
B
A
B
10
10
1
1
5
5
6
6
10 1
56
A
E
F
G
D
E
FF
H
C
G
Dot above pin1
Recommended
Board Layout
A max B max C max D min E F typ G dia H dia
0.550 0.550 0.500 0.100 0.400 0.100 0.013 0.032
13,97 13,97 12,70 2,54 10,16 2,54 0,33 0,82
Packaging 50 parts per tray Packaging
AS8446-A, AS8697-B, AS8579-A: 100 parts per tray
AS8379-A: 175 per 13″ reel. Plastic tape: 32 mm wide,
0.5 mm thick, 28 mm pocket spacing, 12.93 mm pocket depth
