LVDS, 1:4 CLOCK BUFFER TERABUFFER™ 7 Rev A 5/13/15
5T9304 DATA SHEET
Table 5C. LVEPECL (2.5V) and LVPECL (3.3V) Differential Input AC Characteristics, V
DD
= 2.5V±0.2V, T
A
= 0°C to 70°C
NOTE 1. The 732mV peak-to-peak input pulse level is specified to allow consistent, repeatable results in an automatic test equipment (ATE)
environment. This device meets the VDIF (AC) specification under actual use conditions.
NOTE 2. A 1082mV LVEPECL (2.5V) and 1880mV LVPECL (3.3V) crossing point level is specified to allow consistent, repeatable results in an
automatic test equipment (ATE) environment. This device meets the V
X specification under actual use conditions.
NOTE 3. In all cases, input waveform timing is marked at the differential cross-point of the input signals.
NOTE 4. The input signal edge rate of 2V/ns or greater is to be maintained in the 20% to 80% range of the input waveform.
Table 5D. LVDS Differential Input AC Characteristics, T
A
= 0°C to 70°C
NOTE 1. The 400mV peak-to-peak input pulse level is specified to allow consistent, repeatable results in an automatic test equipment (ATE)
environment. This device meets the VDIF (AC) specification under actual use conditions.
NOTE 2. A 1.2V crossing point level is specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment. This
device meets the V
X specification under actual use conditions.
NOTE 3. In all cases, input waveform timing is marked at the differential cross-point of the input signals.
NOTE 4. The input signal edge rate of 2V/ns or greater is to be maintained in the 20% to 80% range of the input waveform.
Table 5E. AC Differential Input Characteristics
(1)
, V
DD
= 2.5V±0.2V, T
A
= 0°C to 70°C
NOTE 1. The output will not change state until the inputs have crossed and the minimum differential voltage range defined by V
DIF
has been
met or exceeded.
NOTE 2. V
DIF
specifies the minimum input voltage (V
TR
– V
CP
) required for switching where V
TR
is the “true” input level and V
CP
is the
“complement” input level. The AC differential voltage must be achieved to guarantee switching to a new state.
NOTE 3. V
CM
specified the maximum allowable range of (V
TR
+ V
CP
) /2.
Symbol Parameter Maximum Units
V
DIF
Input Signal Swing
(1)
732 mV
V
X
Differential Input Cross Point Voltage
(2)
LVEPECL 1082 mV
LVPECL 1880 mV
D
H
Duty Cycle 50 %
V
THI
Input Timing Measurement Reference Level
(3)
Crossing Point V
t
R
/ t
F
Input Signal Edge Rate
(4)
2V/ns
Symbol Parameter Maximum Units
V
DIF
Input Signal Swing
(1)
400 mV
V
X
Differential Input Cross Point Voltage
(2)
1.2 V
D
H
Duty Cycle 50 %
V
THI
Input Timing Measurement Reference Level
(3)
Crossing Point V
t
R
/ t
F
Input Signal Edge Rate
(4)
2V/ns
Symbol Parameter Minimum Typical Maximum Units
V
DIF
AC Differential Voltage
(2)
0.1 3.6 V
V
X
Differential Input Cross Point Voltage 0.05 V
DD
V
V
CM
Common Mode Input Voltage Range
(3)
0.05 V
DD
V
V
IN
Input Voltage -0.3 3.6 V
