MAX3264 Datasheet, PDF (1/17 Pages) Maxim Integrated Products – 3.0V to 5.5V, 1.25Gbps/2.5Gbps Limiting Amplifiers

19-1523; Rev 6, 5/04
+3.0V to +5.5V, 1.25Gbps/2.5Gbps
Limiting Amplifiers
General Description
The 1.25Gbps MAX3264/MAX3268/MAX3768 and the
2.5Gbps MAX3265/MAX3269/MAX3765 limiting ampli-
fiers are designed for Gigabit Ethernet and Fibre
Channel optical receiver systems. The amplifiers accept
a wide range of input voltages and provide constant-
level 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 sig-
nal 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 posi-
tive-referenced emitter-coupled logic (PECL) data out-
puts and are available in a tiny 10-pin µMAX package
that is ideal for small-form-factor (SFF) receivers.
Applications
Gigabit Ethernet Optical Receivers
Fibre Channel Optical Receivers
System Interconnect
ATM Optical Receivers
Selector Guide appears at end of data sheet.
Pin Configurations appear at end of data sheet.
C_AZ
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
MAX3264CUE
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*
MAX3265CUB+
0°C to +70°C
10 µMAX-EP*
MAX3265EUE
-40°C to +85°C
16 TSSOP-EP*
MAX3265EUE+
-40°C to +85°C
16 TSSOP-EP*
MAX3265C/D
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 T_A = +25°C.
Ordering Information continued at end of data sheet.
Typical Operating Circuits
V_CC
V_CC
CAZ1 CAZ2
MAX3266
MAX3267
C_IN
0.01µF
IN+
100Ω
IN-
C_IN
0.01µF
TH SQUELCH
R_TH
N.C.
Typical Operating Circuits continued at end of data sheet.
V_CC
MAX3264CUE
MAX3265CUE
MAX3265EUE
R_TERM
0.01µF
OUT+
0.01µF
OUT-
R_L
100Ω
LOS LOS LEVEL
LOSS N.C. N.C.
OF
SIGNAL
R_TERM
V_CC
________________________________________________________________ Maxim Integrated Products 1
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