TMXF28155 Datasheet, PDF (36/606 Pages) Agere Systems – TMXF28155 Super Mapper 155/51 Mbits/s SONET/SDH x28/x21 DS1/E1

TMXF28155/51 Super Mapper
155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
Preliminary Data Sheet
May 2001
4 Electrical Characteristics (continued)
4.5 LVDS Interface Characteristics
3.3 V ± 5% VDD, 0—125 °C, slow—fast process.
Table 23. LVDS Interface Characteristics
.
Parameter
Symbol
Test Conditions
Min Typ
Input Buffer Parameters
Input Voltage Range, VIA or VIB
VI
|VGPD| < 925 mV, dc—1 MHz 0.0 1.2
Input Differential Threshold
VIDTH
|VGPD| < 925 mV, 311 MHz –100 —
Input Differential Hysteresis
VHYST
(+VIDTH) – (–VIDTH)
—
—
Receiver Differential Input
Impedance
RIN
With built-in termination,
80 100
center-tapped
Output Buffer Parameters
Output Voltage:
Low (VOA or VOB)
High (VOA or VOB)
VOL
RLOAD = 100 Ω ±1%
—
—
VOH
RLOAD = 100 Ω ±1%
0.925 —
Output Differential Voltage
|VOD|
RLOAD = 100 Ω ±1%
0.25 —
Output Offset Voltage
VOS
RLOAD = 100 Ω ±1%
1.125 —
Output Impedance, Single Ended RO
VCM = 1.0 V and 1.4 V
40 50
RO Mismatch Between A and B
∆RO
VCM = 1.0 V and 1.4 V
—
—
Change in Differential Voltage
Between Complementary
States
|∆VOD|
RLOAD = 100 Ω ±1%
—
—
Change in Output Offset Voltage
Between Complementary
States
∆VOS
RLOAD = 100 Ω ±1%
—
—
Output Current
ISA, ISB
Driver shorted to VSS
—
—
Output Current
ISAB
Drivers shorted together
—
—
* Buffer will not produce output transition when input is open-circuited.
Max
2.4
100
—*
120
1.475
—
0.40
1.275
60
10
25
25
24
12
Unit
V
mV
mV
Ω
V
V
V
V
Ω
%
mV
mV
mA
mA
36
Agere Systems Inc.