MAX3785 Maxim, MAX3785 Datasheet
MAX3785
Manufacturer Part Number
MAX3785
Description
6.25Gbps / 1.8V PC Board Equalizer
Manufacturer
Maxim
Datasheet
1.MAX3785.pdf
(10 pages)
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MAX3785ITT+T
Manufacturer:
MAXIM
Quantity:
12
Company:
Part Number:
MAX3785UTT+T
Manufacturer:
MAXIM
Quantity:
14
The MAX3785 6.25Gbps equalizer operates from a sin-
gle 1.8V supply and compensates for transmission-
medium losses encountered with FR4 transmission
lines. Optimized for low-voltage, high-density, DC-cou-
pled interconnections between the line card and switch
card, the MAX3785 enables a system upgrade path
while maintaining a legacy rate of 2.5Gbps to
3.125Gbps. Roughly the size of two 0603 passive com-
ponents, the MAX3785 easily provides placement and
routing flexibility.
The MAX3785 is comprised of an equalizer, limiting
amplifier, and output driver. For data rates of 3.2Gbps
and lower, the MAX3785 equalizes signals for spans up
to 40in of FR4 board material. For data rates up to
6.25Gbps, the MAX3785 compensates for 30in of FR4
board material. The MAX3785 is coding independent,
functioning equally well for 8b/10b or scrambled signals.
The MAX3785 features DC-coupled current-mode logic
(CML) data inputs and outputs. It is packaged in a tiny
1.5mm
6-pin TDFN package.
19-2630; Rev 1; 8/03
UCSP is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
✕
1.5mm chip-scale package (USCP™) and a
HSBI for ≤ 6.4Gbps
Double IEEE 802.3ae XAUI
Double STM-16/OC-48
________________________________________________________________ Maxim Integrated Products
Rx
Tx
MAC
General Description
Rx
Tx
LINE CARD
6.25Gbps, 1.8V PC Board Equalizer
OUT
Applications
MAX3785
1.8V
V
CC
IN
BACKPLANE
6.25Gbps
o Single 1.8V Supply
o Very Low Power, 60mW
o Spans 30in with FR4 at 6.25Gbps
o Operates from 1.0Gbps to 6.4Gbps
o Coding Independent, 8b/10b or Scrambled
o DC-Coupled CML Inputs and Outputs
o Small 1.5mm × 1.5mm Footprint
MAX3785UBL
MAX3785UTT
TOP VIEW (BUMPS ON BOTTOM OF DIE)
PART
∆
IN
30in (0.75m)
IN+
IN-
C1
A1
MAX3785UBL
3 x 3 UCSP
MAX3785
Typical Application Circuit
GND
V
0°C to +85°C 6 UCSP (3 × 3)
0°C to +85°C 6 TDFN
A2
C2
1.8V
V
CC
CC
RANGE
TEMP
OUT+
OUT-
SWITCH CARD
A3
C3
Ordering Information
OUT
Pin Configuration
OUT-
GND
IN-
PACKAGE
1
2
3
PIN-
ASIC WITH
Rx
Tx
SWITCH
SERDES
MAX3785UTT
TDFN
Features
PACKAGE
CODE
T633-1
—
6
5
4
IN+
V
OUT+
CC
1
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