MAX4951CCTP+T Maxim Integrated, MAX4951CCTP+T Datasheet - Page 8

• Manufacturer Part Number: MAX4951CCTP+T
• Description: Buffers & Line Drivers 6Gbps SATA Bidirecti onal Redriver with I
• Manufacturer: Maxim Integrated

Specifications of MAX4951CCTP+T

• Rohs: yes
• Number Of Input Lines: /
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 3 V

The MAX4951C consists of two identical buffers that take
SATA input signals and return them to full SATA compliant
output levels. Each buffer includes an equalizer, a limiting
amplifier, and an output driver with preemphasis. The buf-
fer outputs are protected from high-voltage electrostatic
discharge (ESD) to Q8kV Human Body Model (HBM).
Inputs and outputs are internally 50I terminated and
must be AC-coupled to the SATA controller IC and SATA
device for proper operation.
The device provides full OOB signal support through
high-speed, OOB-detection circuitry. SATA OOB differ-
ential input signals of V
as off and are not passed to the output. This prevents the
6Gbps SATA Bidirectional Redriver with Input Equalization,
Preemphasis, and Advanced Power Management
BOUTM
BOUTP
AINM
AINP
50Ω
50Ω
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GND
V
V
CC
CC
Input/Output Terminations
OOB_TH_LOW
Detailed Description
MODE
50Ω
50Ω
CONTROL LOGIC
MAX4951C
OOB Signal Detection
PA
V
CC
PB
50Ω
50Ω
or less are detected
EN
V
V
CC
CC
CAD
50Ω
50Ω
AOUTP
AOUTM
BINM
BINP
system from responding to unwanted noise. SATA OOB
differential input signals of V
detected as on and passed to the output. This allows
OOB signals to transmit through the device. The time
for the OOB detection circuit to detect an inactive SATA
OOB input and squelch the associated output, or detect
an active SATA OOB input and enable the output, is 3ns
(typ). The MODE pin can be used to program the OOB
detection range. When MODE = GND, the SATA version
3.0 range is used. When MODE = V
2.6 range is used.
The device features an active-high enable input (EN). EN
has an internal pulldown resistor of 390kI (typ). Drive
EN low or leave unconnected to place the device into
low-power standby mode. In standby, the buffers are dis-
abled, reducing the supply current to 20FA (typ). Drive
EN high for normal operation.
NOTE: PA, PB, EN, AND MODE HAVE A 390k I RESISTOR PULLDOWN TO GND.
CAD HAS A 390k I RESISTOR PULLUP TO V
X = DON'T CARE.
EN
EN CAD
MODE
0
1
1
1
1
0
0
1
1
0
1
Functional Diagram/Truth Table
PA
X
0
1
0
1
0
1
0
1
V
OOB_TH_LOW
PB
X
0
0
1
1
LOW-POWER STANDBY
LOW-POWER STANDBY
LOW-POWER STANDBY
STANDARD SATA
STANDARD SATA
STATUS
PREEMPHASIS
PREEMPHASIS
75
50
ACTIVE
CHANNEL A
STANDBY
(mV
P-P
) V
OOB_TH_HIGH
STANDARD SATA
STANDARD SATA
CC
PREEMPHASIS
PREEMPHASIS
OOB_TH_HIGH
CHANNEL B
.
STANDBY
MAX4951C
200
150
(mV
CC
P-P
, the SATA version
)
Enable Input
or more are