Datasheet

MAX3264/MAX3265/MAX3268/MAX3269/MAX3765/MAX3768
+3.0V to +5.5V, 1.25Gbps/2.5Gbps
Limiting Amplifiers
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(Data outputs terminated per Figure 1, V
CC
= +3.0V to +5.5V, T
A
= 0°C to +70°C. Typical values are at V
CC
= +3.3V, T
A
= +25°C,
unless otherwise noted.) (Note 1)
PARAMETER CONDITIONS
MIN TYP MAX
UNITS
MAX3264/MAX3268/MAX3768 5.6 9
Medium LOS Assert Level R
TH
= 7kΩ
MAX3265/MAX3269/MAX3765
9.9 16
mV
MAX3264/MAX3268/MAX3768
15
19.8
Medium LOS Deassert Level R
TH
= 7kΩ
MAX3265/MAX3269/MAX3765
27
40.5
mV
MAX3264/MAX3268/MAX3768 9.4
21.6
High LOS Assert Level R
TH
= 20kΩ
MAX3265/MAX3269/MAX3765
18.0 41.5
mV
MAX3264/MAX3268/MAX3768 35
High LOS Deassert Level R
TH
= 20kΩ
MAX3265/MAX3269/MAX3765 67
mV
Squelch Input Current 0 80 400 µA
Differential Input Resistance IN+ to IN- 97
100
103 Ω
MAX3264/MAX3268/MAX3768
150
Input-Referred Noise
MAX3265/MAX3269/MAX3765
230
µV
RMS
LEVEL = open, R
LOAD
= 50Ω
550 1200
CML Output Voltage
LEVEL = GND, R
LOAD
= 75Ω
1100 1270 1800
mV
PECL Output High Voltage
Referenced to V
CC
-1.025 -0.880
V
PECL Output Low Voltage
Referenced to V
CC
-1.810 -1.620
V
LOS Output High Voltage
I
LOS
= -30µA 2.4 V
LOS Output Low Voltage
I
LOS
= +1.2mA 0.4 V
Output Signal When Squelched
Outputs AC-coupled 20 mV
Power-Supply Rejection Ratio
f < 2MHz 20 dB
C
AZ
= open 2
MHz
Low-Frequency Cutoff
C
AZ
= 0.1µF 2 kHz
MAX3264/MAX3265/MAX3765 85
100
115
O utp ut Resi stance ( S i ng l e E nd ed )
MAX3268/MAX3269/MAX3768 4
Ω
MAX3268 39 62
MAX3269 48 78
MAX3264 38 62
MAX3265 50 76
MAX3765 50 76
Output not
squelched
MAX3768 39 62
Power-Supply Current Figure 2
Output squelched
MAX3765 64 90
mA