lxt384 Intel Corporation, lxt384 Datasheet - Page 56

• Manufacturer Part Number: lxt384
• Description: Octal T1/e1/j1 Short Haul Transceiver
• Manufacturer: Intel Corporation

Intel
56
Figure 6. Intel
®
LXT384 Octal T1/E1/J1 S/H PCM Transceiver with JA
Intel
Transceiver
Component
®
D1 - D4
LXT384
TVS1
1
2
3
68µF
3.3V
4
R
R
T
R
Common decoupling capacitor for all TVCC and TGND pins.
Typical value. Adjust for actual board parasitics to obtain optimum return loss.
Refer to Transformer Specifications Table for transformer specifications.
DC blocking capacitor needed when pulse shaping is disabled. See pin
description for TCLK7, pin 2 of QFP package in Table 1.
0.1µF
®
1
LXT384 Transceiver External Transmit/Receive Line Circuitry
International Rectifier.............11DQ04 or 10BQ060
Motorola.......................................MBR0540T1
SGS-Thomson..............SMLVT 3V3 3.3V Transient Voltage Suppressor (TVCC=3.3V)
Semtech.......................SMCJ5.0AC 5.0V Transient Voltage Suppressor (TVCC=5.0V)
TVCC
9.31
VCC
GND
75Ω Coax
11
Ω
0.1µF
Ω
± 1%
± 1%
(ONE CHANNEL)
Intel
Transceiver
LXT384
®
LXT384
120Ω Twisted Pair
TVCC
15.0
11
Ω
TVS1
Ω
± 1%
RRING
TRING
± 1%
RTIP
TTIP
TVCC
TVCC
1kΩ
1kΩ
D4
D2
D3
D1
100Ω Twisted Pair
0.47µF
4
12.4
TVCC = 5V
9.1
R
R
Ω
Ω
R
R
± 1%
± 1%
R
560pF
R
T
0.22µF
2
T
1:2
100Ω Twisted Pair
1:2
3
TVCC = 3.3V
12.4
Rx LINE
Revision Date: September 22, 2005
0
Ω
Ω
± 1%
Tx LINE
Document Number: 248994
Revision Number: 004