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HDSL2 Transformers
H28161-A, H27649-B

For Level One SK70740/-41/-42 and most other HDSL2 transceiver chip sets
Low leakage inductance and DCR
1 CT:2.3 CTS version available for lower supply voltage applications
2300 V line isolation
Low profile design, only .46" high
Evaluation samples are available
Custom versions also available

SPECIFICATIONS

Schematic Dimensions

View data sheet in Acrobat PDF format

Part number	Data rate (kb/s)	Turns ratio chip:line	Primary inductance (mH) ± 15%	Leakage inductance (µH) max	Capacitance (pF) max	DCR (Ohms) max
Part number	Data rate (kb/s)	Turns ratio chip:line	Primary inductance (mH) ± 15%	Leakage inductance (µH) max	Capacitance (pF) max	Chip side	Line side
H28161-A	1500	1CT:2.3CTS	2.0	25	90	1.5 (9-7)	1.5 (1-4), 1.5 (2-5)
H27649-B	1500	1CT:2CTS	2.0	25	90	1.5 (9-7)	1.5 (1-4), 1.5 (2-5)

Part number	DC bias capacity (mA)	Dielectric strength (V)	Return loss (dB) min		Longitudinal balance (dB) typ	THD (dB) typ
Part number	DC bias capacity (mA)	Dielectric strength (V)	@ 40 kHz	@ 320 kHz	Longitudinal balance (dB) typ	THD (dB) typ
H28161-A	100	2300	13	13	65 @ 40 kHz	-85 @ 20 kHz
H27649-B	100	2300	14	15	65 @ 40 kHz	-85 @ 20 kHz

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Updated: August 26, 1999