LXT351 — T1/E1 Short Haul Transceiver with Crystal-less Jitter Attenuation
Table 22. DC Electrical Characteristics
Parameter
Sym
Min
Typ1
Max
Unit
Test Conditions
Digital I/O pins
High level input voltage 2 (pins 1-5, 9-12, 17, 23-28)3
Low level input voltage 2 (pins 1-5, 9-12, 17, 23-28)3
High level output voltage 2 (pins 6-8, 10, 11,23, 28)3
Low level output voltage 2 (pins 6-8, 10, 11,23, 28)3
Input leakage current
VIH
VIL
2.0
–
–
–
–
–
–
–
0.8
–
V
V
VOH
VOL
ILL
2.4
–
V
IOUT = -400 µA
0.4
±10
V
IOUT = 1.6 mA
–
µA
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 “Pin Assignments and Signal Descriptions” on page 8 for the 44-pin QFP
package.
Table 23. Analog Characteristics
Parameter
Min
Typ1
Max
Unit
Test Conditions
Recommended output load on TTIP/TRING
50
2.4
2.7
–
–
3.0
3.0
–
200
3.6
Ω
V
T1
E1
RL = 100 Ω
RL = 120 Ω
AMI output pulse amplitudes
3.3
V
10 Hz - 8 kHz 3
8 kHz - 40 kHz 3
10 Hz - 40 kHz3
Broad Band
0.02
0.025
0.025
0.05
UI
UI
UI
UI
–
–
Jitter added by the
transmitter2
–
–
–
–
@ 1024 kHz
1.431
Receiver sensitivity
0
–
18
dB
Allowable consecutive zeros before LOS (T1)
Allowable consecutive zeros before LOS (E1)
160
–
175
32
–
190
–
–
–
10 kHz - 100 kHz
0.4
138
0.2
37
–
–
UI
UI
UI
UI
Hz
Ω
0 dB line
AT&T Pub 62411
Input jitter tolerance (T1)
1 Hz3
10 kHz - 100 kHz
1 Hz3
–
–
–
–
0 dB line
ITU (G.823)
Input jitter tolerance (E1)
–
–
Jitter attenuation curve corner frequency 4
3
–
selectable in data port
RTIP to RRING
Driver output impedance
–
3
–
Receiver input impedance
–
40
22
28
30
–
kΩ
dB
dB
dB
51 kHz - 102 kHz3
20
20
25
–
Receive return loss (E1)
102 kHz - 2.048 MHz3
–
2.048 MHz - 3.072 MHz3
–
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.
34
Datasheet
INTEL [ INTEL ]
