lxt351 Intel Corporation, lxt351 Datasheet - Page 34

• Manufacturer Part Number: lxt351
• Description: T1/e1 Short Haul Transceiver With Crystal-less Jitter Attenuation
• Manufacturer: Intel Corporation

LXT351 — T1/E1 Short Haul Transceiver with Crystal-less Jitter Attenuation
34
Digital I/O pins
High level input voltage
Low level input voltage
High level output voltage
Low level output voltage
Input leakage current
Recommended output load on TTIP/TRING
AMI output pulse amplitudes
Jitter added by the
transmitter
Receiver sensitivity
Allowable consecutive zeros before LOS (T1)
Allowable consecutive zeros before LOS (E1)
Input jitter tolerance (T1)
Input jitter tolerance (E1)
Jitter attenuation curve corner frequency
Driver output impedance
Receiver input impedance
Receive return loss (E1)
1. Typical figures are at 25° C and are for design aid only; not guaranteed and not subject to production testing.
2. Output drivers will output CMOS logic levels into CMOS loads.
3. Listed pins are for the PLCC package. Refer to
1. Typical figures are at 25° C and are for design aid only; not guaranteed and not subject to production testing.
2. Input signal to TCLK is jitter-free. The Jitter Attenuator is in the receive path or disabled.
3. Guaranteed by characterization; not subject to production testing.
4. Circuit attenuates jitter at 20 dB/decade above the corner frequency.
package.
Table 22. DC Electrical Characteristics
Table 23. Analog Characteristics
2
Parameter
2
2
Parameter
2
(pins 1-5, 9-12, 17, 23-28)
2
(pins 1-5, 9-12, 17, 23-28)
(pins 6-8, 10, 11,23, 28)
(pins 6-8, 10, 11,23, 28)
2.048 MHz - 3.072 MHz
102 kHz - 2.048 MHz
51 kHz - 102 kHz
10 kHz - 100 kHz
10 kHz - 100 kHz
8 kHz - 40 kHz
10 Hz - 40 kHz
10 Hz - 8 kHz
Broad Band
4
1 Hz
1 Hz
E1
T1
3
3
3
3
“Pin Assignments and Signal Descriptions” on page 8
3
3
3
3
3
3
3
3
Sym
V
V
V
V
I
Min
138
160
OH
LL
2.4
2.7
0.4
0.2
OL
50
37
20
20
25
IH
IL
–
–
–
–
0
–
–
–
–
Min
2.0
2.4
Typ
–
–
–
175
3.0
3.0
32
40
22
28
30
–
–
–
–
–
–
–
–
–
–
3
3
1
Typ
–
–
–
–
–
0.025
0.025
Max
0.02
0.05
1
200
190
3.6
3.3
18
–
–
–
–
–
–
–
–
–
–
–
Max
±10
0.8
0.4
–
–
Unit
k
dB
Hz
dB
dB
dB
UI
UI
UI
UI
UI
UI
UI
UI
V
V
–
–
Unit
V
V
V
V
A
for the 44-pin QFP
R
R
@ 1024 kHz
1.431
0 dB line
AT&T Pub 62411
0 dB line
ITU (G.823)
selectable in data port
RTIP to RRING
L
L
Test Conditions
= 100
= 120
Test Conditions
I
I
OUT
OUT
Datasheet
= -400 A
= 1.6 mA