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MAX14954 Datasheet Download - Maxim Integrated

Номер произв MAX14954
Описание Ruggedized Quad PCIe Redriver
Производители Maxim Integrated
логотип Maxim Integrated логотип 



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MAX14954 Даташит, Описание, Даташиты
MAX14954
EVALUATION KIT AVAILABLE
Ruggedized Quad PCIe Redriver with
Equalization and Extended Temperature Operation
General Description
The MAX14954 is a quad equalizer/redriver designed to
improve PCI Express® (PCIe) signal integrity by providing
programmable input equalization at its receiver and pro-
grammable redrive circuitry. The output circuitry reestab-
lishes deemphasis lost on the board and compensates for
circuit-board loss. The device permits optimal placement
of key PCIe components. The device is useful with strip-
line, microstrip printed circuits, and balanced 100Ω cable.
The device is tailored for PCIe and features electrical idle
and receiver detection on each channel. It is optimized for
PCIe Gen III (8.0GT/s) and Gen II (5.0GT/s) data rates,
while still handling Gen I (2.5GT/s).
The MAX14954 is available in a small, lead-free, 42-pin
(3.5mm x 9.0mm) TQFN package for optimal layout and
minimal space requirements. The device is specified over
-40NC to +85NC extended operating temperature range.
Applications
● Industrial/Embedded PCs
● Computer on Modules
● Carrier Boards
● Test Equipment
● Rack Server Industrial PCs
● Medical Equipment
Benefits and Features
Fully Integrated for Ease of Use and Design
Flexibility
Optimized for PCIe Gen III (8.0GT/s), Gen II
(5.0GT/s); Gen I (2.5 GT/s) Compatible
• Four Levels of Input Equalization Up to 16dB
• Eight Levels of Output Deemphasis Up to 9dB
● High Level of Performance to Overcome Noise in
Lossy Channels
• Random Jitter: 0.5psRMS (typ)
• Deterministic Jitter: 10.5psP-P (typ)
• Equalization Permits Placement Up to 30in FR4
● Robust Solution for Harsh Environments
• Industrial Temperature Rated: -40°C to + 85°C
• ±5kV Human Body Model (HBM) Protection on
All Pins
• Housed in a Flow-Through (3.5mm x 9.5mm)
TQFN Package for Resistance to Vibration/
Shocks
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part, refer
to www.maximintegrated.com/MAX14954.related.
PCI Express is a registered trademark of PCI-SIG Corp.
19-6531; Rev 0; 11/12







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MAX14954 Даташит, Описание, Даташиты
MAX14954
Ruggedized Quad PCIe Redriver with
Equalization and Extended Temperature Operation
Absolute Maximum Ratings
(Voltages referenced to GND.)
VCC...........................................................................-0.3V to +4V
All Other Pins (Note 1).............................. -0.3V to (VCC + 0.3V)
Continuous Current IN_P/IN_N.........................................±30mA
Peak Current IN_P/IN_N
(pulsed for 1µs, 1% duty cycle)...................................±100mA
Note 1: All I/O pins are clamped by internal diodes.
Continuous Power Dissipation (TA = +70°C)
TQFN (derate 34.5mW/°C above +70°C)..................2759mW
Operating Temperature Range............................ -40°C to +85°C
Storage Temperature Range............................. -55°C to +150°C
Junction Temperature.......................................................+150°C
Lead Temperature (soldering, 10s).................................. +300°C
Soldering Temperature (reflow)........................................+260°C
Package Thermal Characteristics (Note 2)
TQFN
Junction-to-Ambient Thermal Resistance (θJA)...........29°C/W
Junction-to-Case Thermal Resistance (θJC)..................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
(VCC = +3.0V to +3.6V, CCL = 200nF coupling capacitor on each output, RL = 50Ω on each output, TA = -40°C to +85°C, unless otherwise
noted. Typical values are at VCC = +3.3V and TA = +25°C.) (Note 3)
PARAMETER
DC PERFORMANCE
Power-Supply Range
Supply Current
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
VCC
3.0 3.6
OEQ2 = GND, OEQ1 = GND,
OEQ0 = GND
205 260
OEQ2 = GND, OEQ1 = GND,
OEQ0 = VCC
OEQ2 = GND, OEQ1 = VCC,
OEQ0 = GND
212 270
214 270
OEQ2 = GND, OEQ1 = VCC,
ICC
EN = VCC
OEQ0 = VCC
OEQ2 = VCC, OEQ1 = GND,
OEQ0 = GND
247 305
213 270
OEQ2 = VCC, OEQ1 = GND,
OEQ0 = VCC
OEQ2 = VCC, OEQ1 = VCC,
OEQ0 = GND
263 330
276 345
OEQ2 = VCC, OEQ1 = VCC,
OEQ0 = VCC
328 410
V
mA
www.maximintegrated.com
Maxim Integrated 2







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MAX14954 Даташит, Описание, Даташиты
MAX14954
Ruggedized Quad PCIe Redriver with
Equalization and Extended Temperature Operation
Electrical Characteristics (continued)
(VCC = +3.0V to +3.6V, CCL = 200nF coupling capacitor on each output, RL = 50Ω on each output, TA = -40°C to +85°C, unless otherwise
noted. Typical values are at VCC = +3.3V and TA = +25°C.) (Note 3)
PARAMETER
Standby Current
Differential Input Impedance
Differential Output Impedance
Common-Mode Resistance to
GND When Input Terminations
Are Not Powered
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
OEQ2 = GND, OEQ1 = GND,
OEQ0 = GND
113 150
OEQ2 = GND, OEQ1 = GND,
OEQ0 = VCC
OEQ2 = GND, OEQ1 = VCC,
OEQ0 = GND
122 150
125 155
ISTBY
EN = GND
OEQ2 = GND, OEQ1 = VCC,
OEQ0 = VCC
OEQ2 = VCC, OEQ1 = GND,
OEQ0 = GND
150 185
122 150
mA
OEQ2 = VCC, OEQ1 = GND,
OEQ0 = VCC
OEQ2 = VCC, OEQ1 = VCC,
OEQ0 = GND
172 210
184 225
ZRX-DIFF-
DC
ZTX-DIFF-
DC
DC
DC
OEQ2 = VCC, OEQ1 = VCC,
OEQ0 = VCC
237 290
80 100 120
80 100 120
ZRX-HIGH-
IMP-DC
-150mV < VIN_CM < 200mV
50
kΩ
Common-Mode Resistance to
GND When Input Terminations
Are Powered
ZRX-DC DC
20 25 30
Output Short-Circuit Current
Common-Mode Delta Between
Active and Idle States
DC Output Offset During Active
State
DC Output Offset During
Electrical Idle
ITX-SHORT Single-ended (Note 4)
VTX-CM-
DC-ACTIVE-
IDLE-DELTA
VTX-
ACTIVE-
DIFF-DC
|(VOUT_P - VOUT_N)|
VTX-IDLE-
DIFF-DC
|(VOUT_P - VOUT_N)|
90 mA
8 mV
100 mV
100 mV
www.maximintegrated.com
Maxim Integrated 3










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