DS92LV3221 Datasheet, PDF (9/24 Pages) National Semiconductor (TI) – 20-50 MHz 32-Bit Channel Link II Serializer / Deserializer

Deserializer Switching Characteristics
Over recommended operating supply and temperature ranges unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max Units
t_ROCP
Receiver Output Clock Period
t_ROCP = t_CIP
Figure 9
20
t_ROCP
50
ns
t_RODC
t_ROTR
t_ROTF
RxCLKOUT Duty Cycle
LVCMOS Low-to-High Transition
Time
LVCMOS High-to-Low Transition
Time
C_L = 8pF
(lumped load)
Figure 8
45
50
55
%
3.2
ns
3.5
ns
t_ROSC
t_ROHC
t_HZR
RxOUT[31:0] Setup to RxCLKOUT f = 50 MHz
RxOUT[31:0] Hold to RxCLKOUT
Data Output High to TRI-STATE® Figure 11
Delay
0.5 x
5.6
t_ROCP
ns
0.5 x
7.4
t_ROCP
ns
5
10
ns
t_LZR
Data Output Low to TRI-STATE®
Delay
5
10
ns
t_ZHR
Data Output TRI-STATE® to High
Delay
5
10
ns
t_ZLR
Data Output TRI-STATE® to Low
Delay
5
10
ns
t_RD
Deserializer Porpagation Delay –
Latency
f = 20 MHz
Figure 10
5.5 x
ns
t_ROCP +
3.35
f = 50 MHz
5.5 x
ns
t_ROCP +
6.00
t_RPLLS
Deserializer PLL Lock Time
20 MHz – 50 MHz
Figure 11
(Note 5)
128k x
t_ROCP
ns
TOL_JIT
t_LVSKR
Deserializer Input Jitter Tolerance
LVDS Differential Input Skew
Tolerance
20 MHz – 50 MHz
Figure 15
0.25
UI
0.4 x
t_ROCP
ns
Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of device reliability
and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or other conditions beyond those indicated in
the Recommended Operating Conditions is not implied. The Recommended Operating Conditions indicate conditions at which the device is functional and the
device should not be operated beyond such conditions.
Note 2: Typical values represent most likely parametric norms at V_DD = 3.3V, T_A = +25°C, and at the Recommended Operating Conditions at the time of product
characterization and are not guaranteed.
Note 3: Current into a the device is defined as positive. Current out of a device pin is defined as negative. Voltages are referenced to ground except V_OD,
ΔV_OD, V_TH, V_TL which are differential voltages.
Note 4: When the Serializer output is at TRI-STATE® the Deserializer will lose PLL lock. Resynchronization MUST occur before data transfer.
Note 5: t_RPLLS is the time required by the Deserializer to obtain lock when exiting power-down mode.
9
www.national.com