Lead Temperature (soldering, 10s) .................................
+300°C
Soldering Temperature (reflow)
.......................................+260°C
Package Thermal Characteristics
(Note 2)
TQFN
Junction-to-Ambient Thermal Resistance (θ
JA
) ..........29°C/W
Junction-to-Case Thermal Resistance (θ
JC
) .................2°C/W
Note 2:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to
www.maximintegrated.com/thermal-tutorial.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics
(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
DC PERFORMANCE
Power-Supply Range
V
CC
OEQ2 = GND, OEQ1 = GND,
OEQ0 = GND
OEQ2 = GND, OEQ1 = GND,
OEQ0 = V
CC
OEQ2 = GND, OEQ1 = V
CC
,
OEQ0 = GND
OEQ2 = GND, OEQ1 = V
CC
,
OEQ0 = V
CC
OEQ2 = V
CC
, OEQ1 = GND,
OEQ0 = GND
OEQ2 = V
CC
, OEQ1 = GND,
OEQ0 = V
CC
OEQ2 = V
CC,
OEQ1 = V
CC
,
OEQ0 = GND
OEQ2 = V
CC
, OEQ1 = V
CC
,
OEQ0 = V
CC
3.0
205
212
214
247
213
263
276
328
3.6
260
270
270
305
mA
270
330
345
410
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Current
I
CC
EN = V
CC
www.maximintegrated.com
Maxim Integrated
│
2
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 otherwise
noted. Typical values are at V
CC
= +3.3V and T
A
= +25°C.) (Note 3)
PARAMETER
SYMBOL
CONDITIONS
OEQ2 = GND, OEQ1 = GND,
OEQ0 = GND
OEQ2 = GND, OEQ1 = GND,
OEQ0 = V
CC
OEQ2 = GND, OEQ1 = V
CC
,
OEQ0 = GND
OEQ2 = GND, OEQ1 = V
CC
,
OEQ0 = V
CC
OEQ2 = V
CC
, OEQ1 = GND,
OEQ0 = GND
OEQ2 = V
CC
, OEQ1 = GND,
OEQ0 = V
CC
OEQ2 = V
CC
, OEQ1 = V
CC
,
OEQ0 = GND
OEQ2 = V
CC
, OEQ1 = V
CC
,
OEQ0 = V
CC
Differential Input Impedance
Differential Output Impedance
Common-Mode Resistance to
GND When Input Terminations
Are Not Powered
Common-Mode Resistance to
GND When Input Terminations
Are Powered
Output Short-Circuit Current
Common-Mode Delta Between
Active and Idle States
DC Output Offset During Active
State
DC Output Offset During
Electrical Idle
Z
RX-DIFF-
DC
MIN
TYP
113
122
125
150
122
172
184
237
MAX
150
150
155
185
UNITS
Standby Current
I
STBY
EN = GND
mA
150
210
225
290
120
120
Ω
Ω
kΩ
DC
DC
-150mV < V
IN_CM
< 200mV
80
80
50
100
100
Z
TX-DIFF-
DC
Z
RX-HIGH-
IMP-DC
Z
RX-DC
I
TX-SHORT
V
TX-CM-
DC-ACTIVE-
IDLE-DELTA
DC
Single-ended (Note 4)
20
90
25
30
Ω
mA
8
mV
V
TX-
ACTIVE-
DIFF-DC
|(V
OUT_P -
V
OUT_N
)|
|(V
OUT_P -
V
OUT_N
)|
100
100
mV
mV
V
TX-IDLE-
DIFF-DC
www.maximintegrated.com
Maxim Integrated
│
3
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
AC PERFORMANCE (Note 4)
f = 0.05GHz to 1.25GHz
Differential Input Return Loss
Common-Mode Input Return
Loss
Differential Output Return Loss
Common-Mode Output Return
Loss
Redriver Operation Differential
Input-Signal Range
Full-Swing Differential Output
Voltage (No Deemphasis)
Output Deemphasis Ratio, 0dB
Output Deemphasis Ratio, 3.5dB
Output Deemphasis Ratio, 6dB
Output Deemphasis Ratio, 6dB
with Higher Amplitude
Output Deemphasis Ratio, 3.5dB
with Preshoot
Output Deemphasis Ratio, 6dB
with Preshoot
Output Deemphasis Ratio, 9dB
with Preshoot
Output Deemphasis Ratio,
9dB with Preshoot with Higher
Amplitude
Input Equalization, 5dB
Input Equalization, 8dB
Input Equalization, 12dB
RL
RX-DIFF
RL
RX-CM
RL
TX-DIFF
RL
TX-CM
V
RX-DIFF-
PP
SYMBOL
CONDITIONS
MIN
10
8
5
6
4
10
8
4
6
4
100
TYP
MAX
UNITS
f = 1.25GHz to 2.5GHz
f = 2.5GHz to 4GHz
f = 0.05GHz to 2.5GHz
f = 2.5GHz to 4GHz
f = 0.05GHz to 1.25GHz
f = 1.25GHz to 2.5GHz
f = 2.5GHz to 4GHz
f = 0.05GHz to 2.5GHz
f = 2.5GHz to 4GHz
dB
dB
dB
dB
1200
1350
0
3.5
6
6
3.5
6
9
9
5
8
12
mV
P-P
mV
P-P
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
V
TX-DIFF-
PP
|(V
OUT_P
- V
OUT_N
)|, OEQ2 = GND,
OEQ1 = GND, OEQ0 = GND
OEQ2 = GND, OEQ1 = GND,
OEQ0 = GND, Figure 1
OEQ2 = GND, OEQ1 = GND,
OEQ0 = V
CC,
Figure 1
OEQ2 = GND, OEQ1 = V
CC
,
OEQ0 = GND, Figure 1
800
V
TX-DE-
RATIO-0dB
V
TX-DE-
RATIO-
3.5dB
V
TX-DE-
RATIO-6dB
V
TX-DE-HA-
OEQ2 = GND, OEQ1 = V
CC
,
RATIO-6dB
OEQ0 = V
CC,
Figure 1
V
TX-DE-
PS-RATIO-
3.5dB
OEQ2 = V
CC
, OEQ1 = GND,
OEQ0 = GND, Figure 1
V
TX-DE-PS-
OEQ2 = V
CC
, OEQ1 = GND,
RATIO-6dB
OEQ0 = V
CC
, Figure 1
V
TX-DE-PS-
OEQ2 = V
CC
, OEQ1 = V
CC
,
RATIO-9dB
OEQ0 = GND, Figure 1
V
TX-DE-PS-
HA-RATIO-
9dB
OEQ2 = V
CC
, OEQ1 = V
CC
,
OEQ0 = V
CC
, Figure 1
INEQ1 = GND, INEQ0 = GND (Note 5)
INEQ1 = GND, INEQ0 = V
CC
(Note 5)
INEQ1 = V
CC
, INEQ0 = GND (Note 5)
V
RX-EQ-
5dB
V
RX-EQ-
8dB
V
RX-EQ-
12dB
www.maximintegrated.com
Maxim Integrated
│
4
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
Electrical Idle Entry Delay
V
TX-CM-
AC-PP
SYMBOL
V
RX-EQ-
16dB
CONDITIONS
INEQ1 = V
CC,
INEQ0 = V
CC
(Note 5)
Max(V
OUT_P
+ V
OUT_N
)/2 -
Min(V
OUT_P
+ V
OUT_N
)/2
MIN
TYP
16
MAX
UNITS
dB
100
120
160
240
mV
P-P
ps
ps
t
PD
t
TX-RISE-
FALL
(Note 6)
(Note 6)
K28.5 pattern, AC-coupled, R
L
= 50Ω,
data rate = 8GT/s
D10.2 pattern, no deemphasis, no
preshoot, data rate = 8GT/s
From input to output, D10.2 pattern,
data rate = 1GT/s
From input to output, D10.2 pattern,
data rate = 1GT/s
D10.2 pattern, data rate = 1GT/s,
(Note 3)
D10.2 pattern, data rate = 1GT/s to 8GT/s
|(V
OUT_P
- V
OUT_N
)|
Voltage change in positive direction
20
5
10.5
0.5
5
23.5
1.5
8
t
TX-RF-
MISMATCH
ps
ps
P-P
ps
RMS
ns
t
TX-DJ-DD
t
TX-RJ-DD
t
TX-IDLE-
SET-TO-
IDLE
Electrical Idle Exit Delay
t
TX-IDLE-
TO-DIFF-
DATA
5
65
112
112
8
175
ns
Electrical Idle Detect Threshold
Output Voltage During Electrical
Idle (AC)
Receiver Detection Pulse
Amplitude
Receiver Detection Pulse Width
Receiver Detection Retry Period
CONTROL LOGIC
Input Logic-Level Low
Input Logic-Level High
Input Logic Hysteresis
Input Pulldown Resistance
ESD PROTECTION
ESD Voltage
Note
Note
Note
Note
3:
4:
5:
6:
V
TX-IDLE-
THRESH
mV
P-P
mV
P-P
mV
ns
ns
V
TX-IDLE-
DIFF-AC-P
20
600
150
300
V
TX-RCV-
DETECT
V
HYST
R
PD
V
IH
V
IL
0.6
1.4
0.1
200
Human Body Model
250
±5
V
V
V
kΩ
kV
All units are 100% production tested at T
A
= +85°C. Specifications for all temperature limits are guaranteed by design.
Guaranteed by design, unless otherwise noted.
Equivalent to same amount of deemphasis driving the input.
Rise and fall times are measured using 20% and 80% levels.
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