DS125MB203_15 Datasheet, PDF (9/54 Pages) Texas Instruments – Low-Power 12.5-Gbps Dual-Lane 2:1/1:2 Mux/Buffer

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DS125MB203
SNLS432C – OCTOBER 2012 – REVISED DECEMBER 2015
Electrical Characteristics (continued)
See ⁽¹⁾⁽²⁾.
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
V_{tx-de-ratio_6}
TX de-emphasis ratio
VOD = 1.0 Vp-p,
DEM_x[1:0] = F, 0
–6
dB
t_TX-DJ
Deterministic jitter
VID = 800 mV, PRBS15 pattern, 8.0 0.05 Gbps,
VOD = 1.0 V, UIpp EQ = 0x00, DE = 0 dB (no input
or output trace loss)
0.05
UIpp
t_TX-RJ
Random jitter
VID = 800 mV, 0101 pattern, 8.0 Gbps, 0.3
VOD = 1.0 V, ps RMS EQ = 0x00, DE = 0 dB, (no
input or output trace loss)
0.3
ps RMS
T_TX-RISE-FALL
T_RF-MISMATCH
RL_TX-DIFF
TX rise/fall time
TX rise/fall mismatch
TX Differential return
loss
20% to 80% of differential output voltage
20% to 80% of differential output voltage
0.05 - 7.5 GHz
7.5 - 15 GHz
35
45
ps
0.01
0.1
UI
–15
dB
–5
dB
RL_TX-CM
TX common-mode
return loss
0.05 - 5 GHz
–10
dB
Z_TX-DIFF-DC
DC differential TX
impedance
100
Ω
V_TX-CM-AC-PP
TX AC common-mode VOD = 1.0 Vp-p,
voltage
DEM_x[1:0] = R, F
100 mVpp
I_TX-SHORT
TX short circuit
current limit
Total current the transmitter can supply when shorted
to VDD or GND
20
mA
V_TX-CM-DC-
ACTIVE-IDLE-DELTA
Absolute delta of DC
common-mode
voltage during L0 and
electrical idle
100
mV
V_{TX-CM-DC-LINE-}
DELTA
Absolute delta of DC
common-mode
voltage between TX+
and TX–
25
mV
T_TX-IDLE-DATA
Max time to transition
to differential DATA VID = 1 Vp-p, 8 Gbps
signal after IDLE
3.5
ns
T_TX-DATA-IDLE
Max time to transition
to IDLE after
differential DATA
signal
VID = 1 Vp-p, 8 Gbps
6.2
ns
T_PLHD/PHLD
High-to-low and low-
to-high differential
propagation delay
EQ = 00⁽⁴⁾
200
ps
T_LSK
T_PPSK
Lane-to-lane skew
Part-to-part
propagation delay
skew
T = 25°C, VDD = 2.5 V
T = 25°C, VDD = 2.5 V
25
ps
40
ps
T_MUX-SWITCH
Mux/switch time
EQUALIZATION
100
ns
DJE1
Residual deterministic 30-inch 4-mils FR4, VID = 0.6 Vp-p, PRBS15,
jitter at 12 Gbps
EQ = 07'h, DEM = 0 dB
0.18
UI
DJE2
Residual deterministic 30-inch 4-mils FR4, VID = 0.6 Vp-p, PRBS15,
jitter at 8 Gbps
EQ = 07'h, DEM = 0 dB
0.11
UI
DJE3
Residual deterministic 30-inch 4-mils FR4, VID = 0.6 Vp-p, PRBS15,
jitter at 5 Gbps
EQ = 07'h, DEM = 0 dB
0.07
UI
DJE4
Residual deterministic 5 meters 30 awg cable, VID = 0.6 Vp-p, PRBS15,
jitter at 12 Gbps
EQ = 07'h, DEM = 0 dB
0.25
UI
(4) Propagation Delay measurements will change slightly based on the level of EQ selected. EQ = 00 will result in the shortest propagation
delays.
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