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XR-T7288IW Datasheet(PDF) 5 Page - Exar Corporation

Part # XR-T7288IW
Description  CEPT1 Line Interface
Download  24 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XR-T7288IW Datasheet(HTML) 5 Page - Exar Corporation

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XR-T7288
5
Rev. 1.01
ELECTRICAL CHARACTERISTICS
Test Conditions: TA = -40°C to +85°C; VDD = 5V 10%
Symbol
Parameter
Min.
Typ.
Max.
Unit
Conditions
Logic Interface Electrical Characteristics
Input Voltage
VIL
Low
GNDD
0.8
V
VIH
High
2.0
VDDD
V
Output Voltage1
VOL
Low
GNDD
0.4
V
2.0mA Sink
VOH
High
2.4
VDDD
V
80
µA Source
CI
Input Capacitance
20
pF
CL
Load Capacitance
40
pF
Transmitter Specifications
Output Pulse Amplitude
75
Ω (ZS = 0)
2.14
2.37
2.60
V
120
Ω (ZS = 1)
2.70
3.00
3.30
V
Pulse Width (50%)
219
244
269
ns
Positive/Negative Pulse
Imbalance
5
%
Zero Level
102
%2
Output Transformer Turns Ratio
1:1.33
1:1.36
1:1.39
Receiver Specifications
Receiver Sensitivity3
0.7
4.2
Vp
Allowed Cable Loss at BER 10-9
No Interference
10
7
dB
Interfering PBRS, 18dB
6
dB
Below Transmitted PBRS
PLL4
3dB Bandwidth
28
kHz
Peaking
0.24
0.5
dB
ICO Free-running Frequency
Error
7
%
Notes
1 Digital outputs drive purely capacitive loads to full output levels (VDDD, GNDD)
2 Percentage of the nominal pulse amplitude.
3 Measured at T1, R1 (V peak-to-zero, GND reference)
4 Transfer characteristics (1/4 input)
5 All measurements are with a matched-impedance transmit interface (see Figure 3. and Figure 4.) and with VDD or GND applied to
digital input leads.
Internal pull-up devices are provided on the following input leads: LP1, LP2, LP3 and ALMT. Internal pull-down devices are provided
on the following leads: SD, RBC, HDB3/TNDATA, TBC, SR/DR, FLM, and ZS. The internal pull-up or pull-down devices require the
input to source or sink to be no more than 20
µA.
Specifications are subject to change without notice


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