MAX14950 Datasheet, PDF (5/17 Pages) Maxim Integrated Products – Quad PCI Express Equalizer/Redriver

MAX14950
Quad PCI Express Equalizer/Redriver
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +3.0V to +3.6V, CCL = 200nF coupling capacitor on each output, RL = 50I on each output, TA = 0NC to +70NC, unless oth-
erwise noted. Typical values are at VCC = +3.3V and TA = +25NC.) (Note 3)
PARAMETER
Input Equalization, 16dB
AC PERFORMANCE (Note 4)
Output Common-Mode Voltage
Swing Peak-to-Peak
Propagation Delay
Rise/Fall Time
Rise/Fall Time Mismatch
Deterministic Jitter
SYMBOL
VRX-EQ-
16dB
CONDITIONS
INEQ1 = VCC, INEQ0 = VCC (Note 5)
VTX-CM-
AC-PP
tPD
tTX-RISE-
FALL
tTX-RF-
MISMATCH
tTX-DJ-DD
Max(VOUT_P + VOUT_N)/2
- Min(VOUT_P + VOUT_N)/2
(Note 6)
(Note 6)
K28.5 pattern, AC-coupled, RL = 50I,
data rate = 8GT/s
MIN TYP MAX UNITS
16
dB
100 mVP-P
120 160 240
ps
20
ps
5
ps
10.5 23.5 psP-P
Random Jitter
tTX-RJ-DD
D10.2 pattern, no deemphasis, no
preshoot, data rate = 8GT/s
0.5
1.5 psRMS
Electrical Idle Entry Delay
tTX-IDLE-
SET-TO-
IDLE
From input to output, D10.2 pattern,
data rate = 1GT/s
5
8
ns
Electrical Idle Exit Delay
tTX-IDLE-
TO-DIFF-
DATA
From input to output, D10.2 pattern,
data rate = 1GT/s
5
8
ns
Electrical Idle Detect Threshold ^{VTX-IDLE- D10.2 pattern, data rate = 1GT/s (Note 3)}
65
THRESH D10.2 pattern, data rate = 1GT/s to 8GT/s
112 175
mVP-P
112
Output Voltage During Electrical
Idle (AC)
VTX-IDLE- _{|(VOUT_P - VOUT_N)|}
DIFF-AC-P
20
mVP-P
Receiver Detection Pulse
Amplitude
VTX-RCV- _{Voltage change in positive direction}
DETECT
600
mV
Receiver Detection Pulse Width
150
ns
Receiver Detection Retry Period
300
ns
CONTROL LOGIC
Input Logic-Level Low
Input Logic-Level High
Input Logic Hysteresis
Input Pulldown Resistance
ESD PROTECTION
VIL
VIH
VHYST
RPD
0.6
V
1.4
V
0.1
V
200 250
kI
ESD Voltage
Human Body Model
±5
kV
Note 3: All units are 100% production tested at TA = +70NC. Specifications for all temperature limits are guaranteed by design.
Note 4: Guaranteed by design, unless otherwise noted.
Note 5: Equivalent to same amount of deemphasis driving the input.
Note 6: Rise and fall times are measured using 20% and 80% levels.
Maxim Integrated
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