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.
Package Thermal Characteristics
(Note 1)
Junction-to-Ambient Thermal Resistance (θ
JC
) .............2.7°C/W
Junction-to-Ambient Thermal Resistance (θ
JA
) ..............35°C/W
Note 1:
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.
Electrical Characteristics
PARAMETER
Operating Power-Supply Range
Operating Supply Current
Standby Supply Current
Input Termination
Output Termination
AC PERFORMANCE
Differential Input Return Loss
(Note 3)
(V
CC
= +3.0V to +3.6V, C
COUPLE
= 12nF, R
L
= 50Ω, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
CC
= +3.3V,
T
A
= +25°C.) (Note 2)
SYMBOL
V
CC
I
CC
I
STBY
R
RX-SE
R
TX-SE
EQ_ = PE_ = GND
EQ_ = PE_ = V
CC
EN = GND
Single-ended to V
CC
Single-ended to V
CC
0.1GHz ≤ f ≤ 0.3GHz
S
DD11
0.3GHz ≤ f ≤ 3.0GHz
3.0GHz ≤ f ≤ 6.0GHz
0.1GHz ≤ f ≤ 0.3GHz
S
CC11
0.3GHz ≤ f ≤ 3.0GHz
3.0GHz ≤ f ≤ 6.0GHz
0.1GHz ≤ f ≤ 0.3GHz
S
DD22
0.3GHz ≤ f ≤ 3.0GHz
3.0GHz ≤ f ≤ 6.0GHz
0.1GHz ≤ f ≤ 0.3GHz
S
CC22
0.3GHz ≤ f ≤ 3.0GHz
3.0GHz ≤ f ≤ 6.0GHz
V
IN-DIFF
EQ
V
OUT-DIFF
SAS 1.5, 3.0, or 6.0GT/s MODE = GND
SATA 1.5, 3.0, or 6.0GT/s MODE = V
CC
EQ_ = V
CC
(Note 4)
f = 750MHz, PE_ = GND
750
42.5
42.5
-10
-7.9
0
-6
-5
0
-10
-7.9
0
-6
-4
0
275
225
3
1200
1600
1600
mV
P-P
dB
mV
P-P
dB
dB
dB
dB
CONDITIONS
MIN
3.0
140
175
16
TYP
MAX
3.6
175
220
20
57.5
57.5
UNITS
V
mA
mA
Ω
Ω
Common-Mode Input Return Loss
(Note 3)
Differential Output Return Loss
(Note 3)
Common-Mode Output Return
Loss (Note 3)
Differential Input Voltage
Input Equalization
Differential Output Voltage
www.maximintegrated.com
Maxim Integrated
│
2
MAX14986
Dual 6GT/s SAS/SATA Redriver
with Equalization and Extended
Temperature Operation
(V
CC
= +3.0V to +3.6V, C
COUPLE
= 12nF, R
L
= 50Ω, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
CC
= +3.3V,
T
A
= +25°C.) (Note 2)
PARAMETER
Output Preemphasis
Propagation Delay
Output Transition Time
Differential Output Skew Same Pair
Deterministic Jitter
Random Jitter
OOB Squelch Threshold
OOB Squelch Entry Time
OOB Squelch Exit Time
OOB Differential Offset Delta
OOB Common-Mode Offset Delta
OOB Output Disable
CONTROL LOGIC INPUTS
Input Logic-High
Input Logic-Low
Input Logic Hysteresis
Input Leakage Current
V
IH
V
IL
V
HYST
I
IN
V
CC
= +3.3V, V
IN
= +0.5V or +1.5V
-50
75
+50
1.4
0.6
V
V
mV
µA
SYMBOL
PE
t
PD
T
TX-RF
T
SK
T
DJ
T
RJ
V
SQ-DIFF
T
OOB,SQ
T
OOB,EX
∆V
OOB,DIFF
∆V
OOB,CM
V
OOB,OUT
K28.5 pattern, 6.0GT/s, PE_ = EQ_ = GND
(Note 3)
D10.2 pattern, 6.0GT/s, PE_ = EQ_ = GND
MODE = GND, f = 0.75GHz
MODE = V
CC
, f = 0.75GHz
f = 0.75GHz (Note 3)
f = 0.75GHz (Note 3)
Difference between OOB and active-mode
output offset
Difference between OOB and active-mode
output common-mode voltage
OOB disabled output level
-50
-30
120
75
CONDITIONS
PE_ = V
CC
, Figure 1
PE_ = EQ_ = GND
PE_ = GND, 20% to 80%
30
10
23
1.5
220
200
5
9
+50
+30
30
MIN
TYP
3
300
MAX
UNITS
dB
ps
ps
ps
ps
P-P
ps
RMS
mV
P-P
ns
ns
mV
mV
mV
P-P
Electrical Characteristics (continued)
Note 2:
All devices are 100% production tested at T
A
= +85°C. All temperature limits are guaranteed by design.
Note 3:
Guaranteed by design.
Note 4:
EQ (input equalization) as employed in this device refers to the equivalent of adding preemphasis before the input. For
example, input EQ of 3dB would show the same waveform as output PE of 3dB (see Figure 1).
Timing Diagram
V
LOW_PP
V
HIGH_PP
PE(dB) = 20log
[(
V
HIGH_PP
V
LOW_PP
)]
Maxim Integrated
│
3
Figure 1. Output Preemphasis
www.maximintegrated.com
MAX14986
Dual 6GT/s SAS/SATA Redriver
with Equalization and Extended
Temperature Operation
Typical Operating Characteristics
(V
CC
= +3.3V, T
A
= +25°C, all eye diagrams measured using K28.5 pattern.)
V
IN
= 275mV
P-P
, 1.5Gbps, PE = 0, EQ = 0
MAX14986 toc01
V
IN
= 275mV
P-P
, 3Gbps, PE = 0, EQ = 0
EYE DIAGRAM VOLTAGE (200mV/div)
400
200
0
-200
-400
MAX14986 toc02
600
EYE DIAGRAM VOLTAGE (200mV/div)
400
200
0
-200
-400
-600
V
IN
= 275mV
P-P
, 6Gbps, PE = 0, EQ = 0
MAX14986 toc03
EYE DIAGRAM VOLTAGE (200mV/div)
400
200
0
-200
-400
-400
-200
0
200ps/div
200
400
-200
-100
0
100ps/div
100
200
-100
-50
0
50ps/div
50
100
800
EYE DIAGRAM VOLTAGE (200mV/div)
600
400
200
0
-200
-400
-600
-800
V
IN
= 275mV
P-P
, 1.5Gbps, PE = 1, EQ = 0
MAX14986 toc04
800
EYE DIAGRAM VOLTAGE (200mV/div)
600
400
200
0
-200
-400
-600
-800
V
IN
= 275mV
P-P
, 3Gbps, PE = 1, EQ = 0
MAX14986 toc05
-400
-200
0
200ps/div
200
400
-200
-100
0
100ps/div
100
200
800
EYE DIAGRAM VOLTAGE (200mV/div)
600
400
200
0
-200
-400
-600
-800
V
IN
= 275mV
P-P
, 6Gbps, PE = 1, EQ = 0
MAX14986 toc06
600
EYE DIAGRAM VOLTAGE (200mV/div)
400
200
0
-200
-400
-600
V
IN
= 1600mV
P-P
, 1.5Gbps, PE = 0, EQ = 0
MAX14986 toc07
-100
-50
0
50ps/div
50
100
-400
-200
0
200ps/div
200
400
www.maximintegrated.com
Maxim Integrated
│
4
MAX14986
Dual 6GT/s SAS/SATA Redriver
with Equalization and Extended
Temperature Operation
Typical Operating Characteristics (continued)
(V
CC
= +3.3V, T
A
= +25°C, all eye diagrams measured using K28.5 pattern.)
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