DS3154+ Maxim Integrated Products, DS3154+ Datasheet - Page 26

• Manufacturer Part Number: DS3154+
• Description: IC LIU DS3/E3/STS1 QUAD 144CSBGA
• Manufacturer: Maxim Integrated Products
• Type: Line Interface Units (LIUs)r

Specifications of DS3154+

• Number Of Drivers/receivers: 4/4
• Protocol: IEEE 1149.1
• Voltage - Supply: 3.135 V ~ 3.465 V
• Mounting Type: Surface Mount
• Package / Case: 144-CSBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Transmitter Power-Down. To minimize power consumption when the transmitter is not being used, assert the
TPD configuration bit (CPU bus mode only). When the transmitter is powered down, the TXP and TXN pins are put
in a high-impedance state and the transmit amplifiers are powered down.
Transmitter Jitter Generation (Intrinsic). The transmitter meets the jitter generation requirements of all
applicable standards, with or without the jitter attenuator enabled.
Transmitter Jitter Transfer. Without the jitter attenuator enabled in the transmit side, the transmitter passes jitter
through unchanged. With the jitter attenuator enabled in the transmit side, the transmitter meets the jitter transfer
requirements of all applicable telecommunication standards in
Table 7-A. DS3 Waveform Template
Governing Specifications: ANSI T1.102 and Bellcore GR-499.
Table 7-B. DS3 Waveform Test Parameters and Limits
Table 7-C. STS-1 Waveform Template
Governing Specifications: Bellcore GR-253 and Bellcore GR-499 and ANSI T1.102.
Rate
Line Code
Transmission Medium
Test Measurement Point
Test Termination
Pulse Amplitude
Pulse Shape
Unframed All-Ones Power Level at
22.368MHz
Unframed All-Ones Power Level at
44.736MHz
Pulse Imbalance of Isolated Pulses
TIME (IN UNIT INTERVALS)
TIME (IN UNIT INTERVALS)
-0.68 ≤ T ≤ +0.36
-0.36 ≤ T ≤ +0.36
-0.68 ≤ T ≤ +0.26
-0.36 ≤ T ≤ +0.36
-0.85 ≤ T ≤ -0.68
-0.85 ≤ T ≤ -0.36
-0.85 ≤ T ≤ -0.68
-0.85 ≤ T ≤ -0.36
PARAMETER
0.36 ≤ T ≤ 1.4
0.36 ≤ T ≤ 1.4
0.26 ≤ T ≤ 1.4
0.36 ≤ T ≤ 1.4
DS3151/DS3152/DS3153/DS3154 Single/Dual/Triple/Quad DS3/E3/STS-1 LIUs
LOWER CURVE
LOWER CURVE
UPPER CURVE
UPPER CURVE
44.736Mbps (±20ppm)
B3ZS
Coaxial cable (AT&T 734A or equivalent)
At the end of 0 to 450ft of coaxial cable
75Ω (±1%) resistive
Between 0.36V and 0.85V
An isolated pulse (preceded by two zeros and
followed by one or more zeros) falls within the
curves listed in
Between -1.8dBm and +5.7dBm
At least 20dB less than the power measured at
22.368MHz
Ratio of positive and negative pulses must be
between 0.90 and 1.10.
NORMALIZED AMPLITUDE EQUATIONS
NORMALIZED AMPLITUDE EQUATION
0.5 {1 + sin[(π / 2)(1 + T / 0.34)]} + 0.03
0.5 {1 + sin[(π / 2)(1 + T / 0.34)]} + 0.03
0.5 {1 + sin[(π / 2)(1 + T / 0.18)]} - 0.03
0.5 {1 + sin[(π / 2)(1 + T / 0.18)]} - 0.03
26 of 61
0.08 + 0.407e
Table
0.1 + 0.61e
SPECIFICATION
Table
7-A.
-0.03
-0.03
-0.03
-0.03
0.03
0.03
-2.4(T - 0.26)
-1.84(T - 0.36)
1-A. See
Figure
9-1.