MAX14954 Datasheet, PDF (5/17 Pages) Maxim Integrated Products – Computer on Modules

MAX14954
Ruggedized Quad PCIe Redriver with
Equalization and Extended Temperature Operation
Electrical Characteristics (continued)
(V_CC = +3.0V to +3.6V, C_CL = 200nF coupling capacitor on each output, R_L = 50Ω on each output, T_A = -40°C to +85°C, unless oth-
erwise noted. Typical values are at V_CC = +3.3V and T_A = +25°C.) (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
Random Jitter
SYMBOL
V_RX-EQ-
16dB
CONDITIONS
INEQ1 = V_CC, INEQ0 = V_CC (Note 5)
V_TX-CM-
AC-PP
t_PD
t_TX-RISE-
FALL
t_TX-RF-
MISMATCH
t_TX-DJ-DD
Max(V_{OUT_P} + V_{OUT_N})/2 -
Min(V_{OUT_P} + V_{OUT_N})/2
(Note 6)
(Note 6)
K28.5 pattern, AC-coupled, R_L = 50Ω,
data rate = 8GT/s
t_TX-RJ-DD
D10.2 pattern, no deemphasis, no
preshoot, data rate = 8GT/s
MIN TYP MAX UNITS
16
dB
100 mV_P-P
120
160
240
ps
20
ps
5
ps
10.5
0.5
23.5 ps_P-P
1.5 ps_RMS
Electrical Idle Entry Delay
t_TX-IDLE-
SET-TO-
IDLE
From input to output, D10.2 pattern,
data rate = 1GT/s
5
8
ns
Electrical Idle Exit Delay
t_TX-IDLE-
TO-DIFF-
DATA
From input to output, D10.2 pattern,
data rate = 1GT/s
5
8
ns
Electrical Idle Detect Threshold
V_TX-IDLE-
THRESH
D10.2 pattern, data rate = 1GT/s,
(Note 3)
D10.2 pattern, data rate = 1GT/s to 8GT/s
65
112
175
mV_P-P
112
Output Voltage During Electrical
Idle (AC)
Receiver Detection Pulse
Amplitude
Receiver Detection Pulse Width
Receiver Detection Retry Period
V_TX-IDLE-
DIFF-AC-P
V_TX-RCV-
DETECT
|(V_{OUT_P} - V_{OUT_N})|
Voltage change in positive direction
20
mV_P-P
600
mV
150
ns
300
ns
CONTROL LOGIC
Input Logic-Level Low
Input Logic-Level High
Input Logic Hysteresis
Input Pulldown Resistance
ESD PROTECTION
ESD Voltage
V_IL
V_IH
V_HYST
R_PD
Human Body Model
0.6
V
1.4
V
0.1
V
200 250
kΩ
±5
kV
Note 3: All units are 100% production tested at T_A = +85°C. 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.
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