MAX3881ECB+TD Maxim Integrated, MAX3881ECB+TD Datasheet - Page 6

• Manufacturer Part Number: MAX3881ECB+TD
• Description: Serializers & Deserializers - Serdes Integrated Circuits (ICs)
• Manufacturer: Maxim Integrated
• Type: Deserializerr

Specifications of MAX3881ECB+TD

• Rohs: yes
• Data Rate: 2.488 Gbit/s
• Input Type: TTL
• Output Type: PECL
• Number Of Inputs: 1
• Number Of Outputs: 16
• Operating Supply Voltage: 3 V to 3.6 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: TQFP-64 EP
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Factory Pack Quantity: 750
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 3 V

The MAX3881 deserializer with clock recovery converts
2.488Gbps serial data to 16-bit-wide, 155Mbps parallel
data. The device combines a fully integrated phase-
locked loop (PLL), input amplifier, data retiming block,
16-bit demultiplexer, clock divider, and PECL output
buffer (Figure 3). The PLL consists of a phase/frequen-
cy detector (PFD), a loop filter, and a voltage-controlled
oscillator (VCO). The MAX3881 is designed to deliver
the best combination of jitter performance and power
+3.3V, 2.488Gbps, SDH/SONET
1:16 Deserializer with Clock Recovery
Figure 3. MAX3881 Functional Diagram
6
SLBI+
SLBI-
SDI+
SDI-
SIS
_______________________________________________________________________________________
V
V
CC
CC
50Ω
50Ω
0
I
AMP
AMP
Detailed Description
0
I
MUX
PHADJ+
FREQUENCY
DETECTOR
PHASE &
LOL
TTL
PHADJ-
FIL+
FILTER
MAX3881
LOOP
FIL-
dissipation by using a differential signal architecture
and low-noise design techniques. The PLL recovers the
serial clock from the serial input data stream. The
demultiplexer generates a 16-bit-wide 155Mbps paral-
lel data output.
The input amplifiers on both the main data and system
loopback accept a differential input amplitude from
50mVp-p to 800mVp-p. The bit error ratio (BER) is bet-
ter than 1 x 10
VCO
D
CK
-10
Q
for input signals as small as 9.5mVp-p,
DIVIDER
CLOCK
DEMULTIPLEXER
16-BIT
Input Amplifier
PECL
PECL
PECL
PECL
PD15
PD1
PD0
PCLK+
PCLK-