MAX9234(2005) Ver la hoja de datos (PDF) - Maxim Integrated

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MAX9234
(Rev.:2005)

Hot-Swappable, 21-Bit, DC-Balanced LVDS Deserializers

Maxim Integrated 

19-3641; Rev 0; 4/05

Hot-Swappable, 21-Bit, DC-Balanced LVDS

Deserializers

General Description

The MAX9234/MAX9236/MAX9238 deserialize three

LVDS serial-data inputs into 21 single-ended

LVCMOS/LVTTL outputs. A parallel-rate LVDS clock

received with the LVDS data streams provides timing for

deserialization. The outputs have a separate supply,

allowing 1.8V to 5V output logic levels. All these devices

are hot-swappable and allow “on-the-fly” frequency

programming.

The MAX9234/MAX9236/MAX9238 feature DC balance,

which allows isolation between a serializer and deseri-

alizer using AC-coupling. Each deserializer decodes

data transmitted by one of the MAX9209/MAX9211/

MAX9213/MAX9215 serializers.

The MAX9234 has a rising-edge output strobe. The

MAX9236/MAX9238 have a falling-edge output strobe.

The MAX9234/MAX9236/MAX9238 operate in DC-

balanced mode only.

The MAX9234/MAX9236 operate with a parallel input

clock of 8MHz to 34MHz, while the MAX9238 operates

from 16MHz to 66MHz. The transition time of the single-

ended outputs is increased on the low-frequency version

parts (MAX9234/MAX9236) for reduced EMI. The LVDS

inputs meet ISO 10605 ESD specification, ±25kV for Air

Discharge and ±8kV Contact Discharge.

The MAX9234/MAX9236/MAX9238 are available in 48-pin

TSSOP packages and operate over the -40°C to +85°C

temperature range.

Applications

Automotive Navigation Systems

Automotive DVD Entertainment Systems

Digital Copiers

Laser Printers

Features

♦ DC Balance Allows AC-Coupling for Wider-Input

Common-Mode Voltage Range

♦ On-the-Fly Frequency Programming

♦ Operating Frequency Range

8MHz to 34MHz (MAX9234/MAX9236)

16MHz to 66MHz (MAX9238)

♦ Falling-Edge Output Strobe (MAX9236/MAX9238)

♦ Slower Output Transitions for Reduced EMI

(MAX9234/MAX9236)

♦ High-Impedance Outputs when PWRDWN Is Low

Allow Output Busing

♦ 5V-Tolerant PWRDWN Input

♦ PLL Requires No External Components

♦ Up to 1.386Gbps Throughput

♦ Separate Output Supply Pins Allow Interface to

1.8V, 2.5V, 3.3V, and 5V Logic

♦ LVDS Inputs Meet ISO 10605 ESD Requirements

♦ LVDS Inputs Conform to ANSI TIA/EIA-644 LVDS

Standard

♦ Low-Profile, 48-Lead TSSOP Package

♦ +3.3V Main Power Supply

♦ -40°C to +85°C Operating Temperature Range

Ordering Information

PART

MAX9234EUM

MAX9236EUM

MAX9238EUM

TEMP RANGE

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

PIN-PACKAGE

48 TSSOP

48 TSSOP

48 TSSOP

Functional Diagram and Pin Configuration appear at end of

data sheet.

________________________________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

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