DS90C185 Datasheet, PDF (6/19 Pages) Texas Instruments – Low Power 1.8V FPD-Link (LVDS) Serializer

Recommended Transmitter Input Characteristics
Over recommended operating supply and temperature ranges unless otherwise specified
Symbol
Parameter
TCIT
TxCLK IN Transition Time (Figure 5)
TCIP
TxCLK IN Period (Figure 6)
TCIH
TxCLK IN High Time (Figure 6)
TCIL
TxCLK IN Low Time (Figure 6)
Min
1.0
9.52
0.35T
0.35T
Typ
T
0.5T
0.5T
Max
6.0
40
0.65T
0.65T
Units
ns
ns
ns
ns
Transmitter Switching Characteristics
Over recommended operating supply and temperature ranges unless otherwise specified
Symbol
Parameter
Min
LLHT
LVDS Low-to-High Transition Time (Figure 4(Note 5))
LHLT
LVDS High-to-Low Transition Time (Figure 4(Note 5))
TPPOS0
Transmitter Output Pulse Positions Normalized for f = 105 MHz
Bit 0
Figure 10
TPPOS1
Transmitter Output Pulse Positions Normalized for
Bit 1
TPPOS2
Transmitter Output Pulse Positions Normalized for
Bit 2
TPPOS3
Transmitter Output Pulse Positions Normalized for
Bit 3
TPPOS4
Transmitter Output Pulse Positions Normalized for
Bit 4
TPPOS5
Transmitter Output Pulse Positions Normalized for
Bit 5
TPPOS6
Transmitter Output Pulse Positions Normalized for
Bit 6
ΔTPPOS
Variation in Transmitter Pulse Position (Bit 6 — Bit
0)
TSTC
Required TxIN Setup to TxCLK IN
Figure 6
0
THTC
Required TxIN Hold to TxCLK IN
2.5
TCCJ
Cycle to Cycle Jitter
f = 105 Mhz
(Note 5)
TSD
Serializer Propagation Delay
f = 105 MHz
Figure 7
TCCS
TxOUT Channel to Channel Skew
TPLLS
Transmitter Phase Lock Loop Set
Figure 8
TPPD
Transmitter Power Down Delay
Figure 9
(Note 6)
Typ
Max
Units
0.18
0.5
ns
0.18
0.5
ns
1
UI
2
UI
3
UI
4
UI
5
UI
6
UI
7
UI
±0.06
UI
ns
ns
0.028
0.035
UI
2*TCIP + 2*TCIP +
ns
10.54
13.96
110
ps
1
ms
100
ns
Note 1: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the device
should be operated at these limits. The tables of “Electrical Characteristics” specify conditions for device operation.
Note 2: Typical values are given for V_CC = 1.8 V and T_A = +22C unless specified otherwise.
Note 3: Current into device pins is defined as positive. Current out of device pins is defined as negative. Voltages are referenced to ground unless otherwise
specified (except V_OD and ΔV_OD).
Note 4: V_OS previously referred as V_CM.
Note 5: Parameter is guaranteed by characterization and is not tested at final test.
Note 6: Parameter is guaranteed by design and is not tested at final test.
www.ti.com
6