Rainbow-electronics MAX9395 Bedienungsanleitung PDF herunterladen (Seite 9)

Balanced cables such as twisted pair offer superior

signal quality and tend to generate less EMI due to

canceling effects.

Board Layout

Use a four-layer printed circuit (PC) board providing

separate signal, power, and ground planes for high-

speed signaling applications. Bypass V

to GND as

close to the device as possible. Install termination

resistors as close to receiver inputs as possible. Match

the electrical length of the differential traces to minimize

signal skew.

MAX9394/MAX9395

2:1 Multiplexers and 1:2 Demultiplexers with

Loopback

_______________________________________________________________________________________ 9

LOGIC INPUTS DIFFERENTIAL OUTPUTS

LB_SELA LB_SELB BSEL OUTA_ / OUTA_ OUTB / OUTB

0 0 0 INA selected INB0 selected

0 0 1 INA selected INB1 selected

0 1 X INA selected INA selected

1 0 0 INB0 selected INB0 selected

1 0 1 INB1 selected INB1 selected

1 1 0 INB0 selected INA selected

1 1 1 INB1 selected INA selected

Table 1. Input Select Truth Table

LB_SEL_ OUT_ _

GND or open Normal inputs selected.

Loopback inputs selected.

Table 2. Loopback Select Truth Table

LB_SELA

PULSE

GENERATOR

OUTA0

OUTA1

INA

50Ω

MAX9394

MAX9395

ENA0 = ENA1 = HIGH

1 CHANNEL SHOWN.

FROM

CHANNEL B

= 100Ω ±1%

= 1.0pF

Figure 5. Output Transition Time, Propagation Delay, and Output Channel-to-Channel Skew Test Circuit

X = Don’t care.

1 2 3 4 5 6 7 8 9 10 11 12 13

MAX9394/MAX9395 1
Loopback 1

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