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PDF MAX14954 Data sheet ( Hoja de datos )
| Número de pieza | MAX14954 | |
| Descripción | Ruggedized Quad PCIe Redriver | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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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
1 page  
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 oth-
erwise noted. Typical values are at VCC = +3.3V and TA = +25°C.) (Note 3)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
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
VRX-EQ-
16dB
INEQ1 = VCC, INEQ0 = VCC (Note 5)
VTX-CM-
AC-PP
tPD
tTX-RISE-
FALL
tTX-RF-
MISMATCH
tTX-DJ-DD
Max(VOUT_P + VOUT_N)/2 -
Min(VOUT_P + VOUT_N)/2
(Note 6)
(Note 6)
K28.5 pattern, AC-coupled, RL = 50Ω,
data rate = 8GT/s
16 dB
100 mVP-P
120 160 240
ps
20 ps
5 ps
10.5 23.5 psP-P
Random Jitter
tTX-RJ-DD
D10.2 pattern, no deemphasis, no
preshoot, data rate = 8GT/s
0.5 1.5 psRMS
Electrical Idle Entry Delay
tTX-IDLE-
SET-TO-
IDLE
From input to output, D10.2 pattern,
data rate = 1GT/s
5 8 ns
Electrical Idle Exit Delay
tTX-IDLE-
TO-DIFF-
DATA
From input to output, D10.2 pattern,
data rate = 1GT/s
5 8 ns
Electrical Idle Detect Threshold
VTX-IDLE-
THRESH
D10.2 pattern, data rate = 1GT/s,
(Note 3)
D10.2 pattern, data rate = 1GT/s to 8GT/s
65
112 175
mVP-P
112
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
VTX-IDLE-
DIFF-AC-P
VTX-RCV-
DETECT
|(VOUT_P - VOUT_N)|
Voltage change in positive direction
VIL
VIH
VHYST
RPD
Human Body Model
20 mVP-P
600 mV
150 ns
300 ns
0.6
1.4
0.1
200 250
V
V
V
kΩ
±5 kV
Note 3: All units are 100% production tested at TA = +85°C. Specifications for all temperature limits are guaranteed by design.
Note 4: Guaranteed by design, unless otherwise noted.
Note 5: Equivalent to same amount of deemphasis driving the input.
Note 6: Rise and fall times are measured using 20% and 80% levels.
www.maximintegrated.com
Maxim Integrated │ 5
5 Page 
MAX14954
Ruggedized Quad PCIe Redriver with
Equalization and Extended Temperature Operation
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
INEQ1 = 1, INEQ0 = 0, VIN = 500mVP-P,
OEQ2 = OEQ1 = OEQ0 = 0, 18in MICROSTRIP
ON INPUT, DATA RATE = 8GT/s
MAX14954 toc31
600
400
200
0
-200
-400
-600
-100 -50 0 50 100
(ps)
INEQ0 = INEQ1 = 0, VIN = 200mVP-P,
0EQ2 = 0, OEQ1 = 0, OEQ0 = 1, OUTPUT
AFTER 19in STRIPLINE, DATA RATE = 8GT/s
MAX14954 toc33
300
200
10
0
-100
-200
-300
-100 -50 0 50 100
(ps)
INEQ0 = INEQ1 = 0, VIN = 200mVP-P,
0EQ2 = 1, OEQ1 = 1, OEQ0 = 0, OUTPUT
AFTER 19in STRIPLINE, DATA RATE = 8GT/s
MAX14954 toc35
250
200
150
100
50
0
-50
-100
-150
-200
-250
-100 -50 0 50 100
(ps)
INEQ1 = 1, INEQ0 = 1, VIN = 500mVP-P,
OEQ2 = OEQ1 = OEQ0 = 0, 24in MICROSTRIP
ON INPUT, DATA RATE = 8GT/s
MAX14954 toc32
600
400
200
0
-200
-400
-600
-60 -40 -20 0 20 40 60
(ps)
INEQ0 = INEQ1 = 0, VIN = 200mVP-P,
0EQ2 = 1, OEQ1 = 1, OEQ0 = 1, OUTPUT
AFTER 19in STRIPLINE, DATA RATE = 8GT/s
300
MAX14954 toc34
200
10
0
-100
-200
-300
-100 -50 0 50 100
(ps)
INEQ0 = INEQ1 = 0, VIN = 200mVP-P,
0EQ2 = 1, OEQ1 = 0, OEQ0 = 1, OUTPUT
AFTER 19in STRIPLINE, DATA RATE = 8GT/s
MAX14954 toc36
300
200
10
0
-100
-200
-300
-100 -50 0 50 100
(ps)
www.maximintegrated.com
Maxim Integrated │ 11
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet MAX14954.PDF ] | |
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