Datasheet

DS26303: 3.3V, T1/E1/J1, Short-Haul, Octal Line Interface Unit
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10 AC CHARACTERISTICS
10.1 Line Interface Characteristics
Table 10-1. Transmitter Characteristics
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
E1 75Ω
2.14 2.37 2.6
E1 120Ω
2.7 3.0 3.3
T1 100Ω
2.4 3.0 3.6
Output Mark Amplitude V
T1 110Ω
2.4 3.0 3.6
V
Output Zero Amplitude (Note 1) V
s
-0.3 +0.3 V
Transmit Amplitude Variation with
Supply
-1 +1 %
Single-rail 8
Transmit Path Delay
Dual-rail 3
UI
Table 10-2. Receiver Characteristics
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Cable Attenuation Attn 12 dB
Analog Loss-of-Signal Threshold (Note 1) 200 mV
Analog Loss-of-Signal Threshold
Hysteresis
(Note 1) 60 mV
192
192
Allowable Zeros Before Loss
(Note 2)
2048
24
192
Allowable Ones Before Loss (Note 3)
192
Dual-rail 3
Receive Path Delay
Single-rail 8
UI
Note 1: Measured at the RRINGn and RTIPn pins with an all-ones input pattern.
Note 2: 192 zeros for T1 and T1.231 specification compliance, 192 zeros for E1 and G.775 specification compliance, 2048 zeros for ETS
300 233 compliance.
Note 3: 24 ones in 192-bit period for T1.231, 192 ones for G.775, 192 ones for ETS 300 233.