19-1523; Rev 7, 2/06
+3.0V to +5.5V, 1.25Gbps/2.5Gbps
Limiting Amplifiers
Features
♦ +3.0V to +5.5V Supply Voltage
♦ Low Deterministic Jitter
14ps (MAX3264)
11ps (MAX3265/MAX3765)
♦ 150ps (max) Edge Speed (MAX3265/MAX3765)
300ps (max) Edge Speed (MAX3264)
♦ Programmable Signal-Detect Function
♦ Choice of CML or PECL Output Interface
♦ 10-Pin µMAX or 16-Pin TSSOP Package
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
0°C to +70°C
16 TSSOP-EP*
MAX3264CUE+
0°C to +70°C
16 TSSOP-EP*
MAX3264C/D
0°C to +70°C
Dice**
MAX3265CUE
0°C to +70°C
16 TSSOP-EP*
MAX3265CUE+
0°C to +70°C
16 TSSOP-EP*
MAX3265CUB
0°C to +70°C
10 µMAX-EP*
MAX3264CUE
Applications
Gigabit Ethernet Optical Receivers
MAX3265CUB+
0°C to +70°C
10 µMAX-EP*
Fibre Channel Optical Receivers
MAX3265EUE
-40°C to +85°C
16 TSSOP-EP*
System Interconnect
MAX3265EUE+
-40°C to +85°C
16 TSSOP-EP*
MAX3265C/D
ATM Optical Receivers
0°C to +70°C
Dice**
+Denotes lead-free package.
*EP = Exposed paddle.
**Dice are designed to operate from 0°C to +70°C, but are tested
and guaranteed only at TA = +25°C.
Selector Guide appears at end of data sheet.
Pin Configurations appear at end of data sheet.
Ordering Information continued at end of data sheet.
Typical Operating Circuits
CAZ
VCC
CAZ1
VCC
VCC
CAZ2
MAX3264CUE
MAX3265CUE
MAX3265EUE
CIN
0.01µF
RTERM
0.01µF
OUT+
IN+
100Ω
IN-
MAX3266
MAX3267
0.01µF
OUT-
CIN
0.01µF
RL
100Ω
RTERM
TH
SQUELCH
LOS
LEVEL
LOSS N.C.
OF
SIGNAL
N.C.
LOS
VCC
RTH
Typical Operating Circuits continued at end of data sheet.
N.C.
________________________________________________________________ Maxim Integrated Products
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
MAX3264/MAX3265/MAX3268/MAX3269/MAX3765/MAX3768
General Description
The 1.25Gbps MAX3264/MAX3268/MAX3768 and the
2.5Gbps MAX3265/MAX3269/MAX3765 limiting amplifiers are designed for Gigabit Ethernet and Fibre
Channel optical receiver systems. The amplifiers accept
a wide range of input voltages and provide constantlevel output voltages with controlled edge speeds.
Additional features include RMS power detectors with
programmable loss-of-signal (LOS) indication, an
optional squelch function that mutes the data output signal when the input voltage falls below a programmable
threshold, and excellent jitter performance.
The MAX3264/MAX3265/MAX3765 feature current-mode
logic (CML) data outputs that are tolerant of inductive
connectors and a 16-pin TSSOP package, making these
circuits ideal for GBIC receivers. The MAX3268/
MAX3269/MAX3768 feature standards-compliant positive-referenced emitter-coupled logic (PECL) data outputs and are available in a tiny 10-pin µMAX package
that is ideal for small-form-factor (SFF) receivers.
