MAX14955 Datasheet, PDF (5/19 Pages) Maxim Integrated Products – Computer on Modules

MAX14955
Single-Lane PCIe Gen III 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 otherwise
noted. Typical values are at V_CC = +3.3V and T_A = +25°C.) (Note 3)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Input Equalization, 8dB
V_RX-EQ-8dB INEQ_1 = GND, INEQ_0 = V_CC (Note 5)
8
dB
Input Equalization, 12dB
V_RX-EQ-
12dB
INEQ_1 = V_CC, INEQ_0 = GND (Note 5)
12
dB
Input Equalization, 16dB
V_RX-EQ-
16dB
INEQ_1 = INEQ_0 = V_CC (Note 5)
16
dB
Output Common-Mode Voltage
V_TX-CM-AC- MAX(V_{OUT_P} + V_{OUT_M})/2 - MIN(V_{OUT_P}
PP
+ V_{OUT_M})/2
100 mV_P-P
Propagation Delay
t_PD
120
160
240
ps
Rise/Fall Time
t_{TX-RISE- (Note 6)}
FALL
20
ps
Rise/Fall Time Mismatch
t_{TX-RF- (Note 6)}
MISMATCH
20
ps
Deterministic Jitter
t_TX-DJ-DD
K28.5 pattern, AC-coupled, R_L = 50I, no
deemphasis, no preshoot, data rate = 8GT/s
7
23.5 ps_P-P
Random Jitter
t_TX-RJ-DD
D10.2 pattern, no deemphasis, no preshoot,
data rate = 8GT/s
0.5
1.5 ps_RMS
Electrical Idle Entry Delay
t_TX-IDLE- From input to output, D10.2 pattern, data
SET-TO-IDLE ^{rate = 1GT/s}
Electrical Idle Exit Delay
Electrical Idle Detect Threshold
t_TX-IDLE-
TO-DIFF-
DATA
From input to output, D10.2 pattern, data
rate = 1GT/s
V_TX-IDLE-
THRESH
D10.2 pattern, data rate = 1GT/s (Note 3)
D10.2 pattern, data rate = 1GT/s to 8GT/s
Output Voltage During Electrical
Idle (AC)
Receiver-Detect Pulse Amplitude
Receiver-Detect Pulse Width
Receiver-Detect Retry Period
CONTROL LOGIC
Input-Logic Level Low
Input-Logic Level High
Input-Logic Hysteresis
Input Pulldown Resistance
ESD PROTECTION
ESD Voltage
V_TX-IDLE-
DIFF-AC-P
V_TX-RCV-
DETECT
V_IL
V_IH
V_HYST
R_PD
|(V_{OUT_P} - V_{OUT_M})|
Voltage change in positive direction
Human Body Model (HBM)
5
ns
5
ns
50
112
190
mV_P-P
112
20
mV_P-P
600
mV
100
ns
200
ns
0.6
V
1.4
V
0.1
V
200
375
kΩ
±4
kV
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