OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

MAX3783UCM+TD

P1-P3P4-P6P7-P8
MAX3783
2.7Gbps Dual Mux/Buffer with Loopback
4 _______________________________________________________________________________________
Pin Description
PIN NAME FUNCTION
1, 12, 24,
30, 31, 37
GND Supply Ground
2 SIA- Serial Input A Negative, CML
3 SIA+ Serial Input A Positive, CML
4, 9, 14, 17,
20, 23, 27,
34, 38, 41,
44, 47
V
CC
+3.3V Supply
5 LB1A Line Out 1A Loopback Mode Select. TTL low selects loopback.
6 LB2A Line Out 2A Loopback Mode Select. TTL low selects loopback.
7 LB1B Line Out 1B Loopback Mode Select. TTL low selects loopback.
8 LB2B Line Out 2B Loopback Mode Select. TTL low selects loopback.
10 SIB+ Serial Input B Positive, CML
11 SIB- Serial Input B Negative, CML
13 SELB Serial Output B Input Select, TTL
15 SOB+ Serial Output B Positive, CML
16 SOB- Serial Output B Negative, CML
18 LO1B+ Line Out 1B Positive, CML
19 LO1B- Line Out 1B Negative, CML
21 LO2B+ Line Out 2B Positive, CML
22 LO2B- Line Out 2B Negative, CML
25 LI2B+ Line In 2B Positive, CML
26 LI2B- Line In 2B Negative, CML
28 LI1B+ Line In 1B Positive, CML
29 LI1B- Line In 1B Negative, CML
32 LI1A- Line In 1A Negative, CML
33 LI1A+ Line In 1A Positive, CML
35 LI2A- Line In 2A Negative, CML
36 LI2A+ Line In 2A Positive, CML
39 LO2A- Line Out 2A Negative, CML
40 LO2A+ Line Out 2A Positive, CML
42 LO1A- Line Out 1A Negative, CML
43 LO1A+ Line Out 1A Positive, CML
45 SOA- Serial Output A Negative, CML
46 SOA+ Serial Output A Positive, CML
48 SELA Serial Out A Input Select, TTL
EP
Exposed
Pad
Ground. Must be soldered to the circuit board for proper thermal and electrical performance (see
the Exposed-Pad (EP) Package section).
Detailed Description
The MAX3783 is a 2.7Gbps dual serial mux/buffer with
selectable line-side loopback for system test. Each half
of the MAX3783 provides a transmitter with a fanout of
two and a receiver with a 2:1 mux, as shown in the func-
tional diagram.
Input Stages
The input amplifiers accept CML or AC-coupled PECL
signals and each input has an on-chip 100Ω differential
impedance for optimal termination, as shown in Figure 1.
Control Lines
TTL-compatible control lines are provided to select the
MAX3783’s operating mode (Table 1). SELA and SELB
set the mux for channels A and B, respectively, to
select LI1_ or LI2_ to connect to the SO_ output. LB1A,
LB1B, LB2A, and LB2B enable loopback mode for
each of the four LO_ outputs. All control lines are inter-
nally pulled high through 15kΩ resistors.
Output Buffers
The outputs are high-speed CML interfaces with 50Ω
back termination, as shown in Figure 2.
Exposed-Pad (EP) Package
The exposed pad on the 48-pin TQFP-EP provides a
very low thermal-resistance path for heat removal from
the IC. The pad is also electrical ground on the
MAX3783 and must be soldered to the circuit board for
proper thermal and electrical performance.
MAX3783
2.7Gbps Dual Mux/Buffer with Loopback
_______________________________________________________________________________________ 5
MAX3783
CML
CML
CML
1
0
CML
1
0
V
CC
V
CC
CML
1
0
V
CC
CML
2
SOA
SELA
2
SIA
2
2
2
2
LI1A
LI2A
LO2A
LO1A
LB2A
LB1A
CML
CML
CML
1
0
CML
1
0
V
CC
V
CC
CML
1
0
V
CC
CML
2
SOB
SELB
2
SIB
2
2
2
2
LI1B
LI2B
LO2B
LO1B
LB2B
LB1B
15kΩ
15kΩ
15kΩ
15kΩ
15kΩ
15kΩ
MAX3783
V
CC
V
CC
- 0.5V
V
CC
IN+
IN-
50Ω
50Ω
1.2kΩ
Figure 1. Input Structure
Functional Diagram
SEL_ SO_
0 LI2_
1 LI1_
LB_ LO_
0 LI_
1 SI_
Table 1. Operating Modes
MAX3783
Chip Information
TRANSISTOR COUNT: 2816
PROCESS: BiPOLAR
2.7Gbps Dual Mux/Buffer with Loopback
6 _______________________________________________________________________________________
V
CC
50Ω 50Ω
32mA
OUT+
OUT-
MAX3783
Figure 2. CML Output Structure
Package Information
(For the latest package outline information, go to
www.maxim-ic.com/packages
.)
PACKAGE TYPE DOCUMENT NO.
48 TQFP-EP
21-0065
P1-P3P4-P6P7-P8

MAX3783UCM+TD

Mfr. #:
Buy MAX3783UCM+TD
Manufacturer:
Maxim Integrated
Description:
Encoders, Decoders, Multiplexers & Demultiplexers 2.7Gbps Dual Mux/Buffer with Loopback
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet