MAX9234EUM+TD Maxim Integrated Products, MAX9234EUM+TD Datasheet

IC DESERIALIZER 21BIT 48TSSOP

MAX9234EUM+TD

Manufacturer Part Number
MAX9234EUM+TD
Description
IC DESERIALIZER 21BIT 48TSSOP
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX9236EUMD.pdf (15 pages)

Specifications of MAX9234EUM+TD

Function
Deserializer
Data Rate
1.386Gbps
Input Type
LVDS
Output Type
LVTTL, LVCMOS
Number Of Inputs
3
Number Of Outputs
21
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
48-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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-
Gap 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.
19-3641; Rev 1; 10/07
Functional Diagram and Pin Configuration appear at end of
data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Automotive Navigation Systems
Automotive DVD Entertainment Systems
Digital Copiers
Laser Printers
Hot-Swappable, 21-Bit, DC-Balanced LVDS
________________________________________________________________ Maxim Integrated Products
General Description
Applications
MAX9234EUM
MAX9236EUM
MAX9238EUM
DC Balance Allows AC-Coupling for Wider Input
Common-Mode Voltage Range
On-the-Fly Frequency Programming
Operating Frequency Range
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
8MHz to 34MHz (MAX9234/MAX9236)
16MHz to 66MHz (MAX9238)
PART
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
Deserializers
PIN-
PACKAGE
48 TSSOP
48 TSSOP
48 TSSOP
Features
CODE
U48-1
U48-1
U48-1
PKG
1

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MAX9234EUM+TD Summary of contents

Page 1

... Digital Copiers Laser Printers Functional Diagram and Pin Configuration appear at end of data sheet. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. DC Balance Allows AC-Coupling for Wider Input Common-Mode Voltage Range ...

Page 2

Hot-Swappable, 21-Bit, DC-Balanced LVDS Deserializers ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.5V to +4. GND.........................................................-0.5V to +6.0V CCO RxIN_, RxCLK IN_ to GND ....................................-0.5V to +4.0V PWRDWN to GND....................................................-0.5V to 6.0V RxOUT_, RxCLK OUT to GND ................-0.5V ...

Page 3

Hot-Swappable, 21-Bit, DC-Balanced LVDS DC ELECTRICAL CHARACTERISTICS (continued) = +3.0V to +5.5V, PWRDWN = high, differential input voltage ⏐ +3.0V to +3.6V CCO = ⏐V /2⏐ to 2.4V - ⏐V mode voltage +3.3V, ...

Page 4

Hot-Swappable, 21-Bit, DC-Balanced LVDS Deserializers AC ELECTRICAL CHARACTERISTICS ( +3.0V to +3.6V, 100mV CC CCO 0.1V to 1.2V, input common mode voltage V = +3.3V, ⏐V values are CCO ID PARAMETER SYMBOL ...

Page 5

Hot-Swappable, 21-Bit, DC-Balanced LVDS = 8pF, PWRDWN = high, differential input voltage ⏐ +3.3V CCO +25°C, unless otherwise noted.) A MAX9234/MAX9236 WORST-CASE PATTERN AND PRBS SUPPLY CURRENT vs. FREQUENCY 100 90 ...

Page 6

Hot-Swappable, 21-Bit, DC-Balanced LVDS Deserializers PIN NAME 45, RxOUT14–RxOUT20 Channel 2 Single-Ended Outputs 46 25, 32, 38, GND Ground 44 6 N.C. No Connection 7, 13, 18 LVDS GND LVDS Ground 8 RxIN0- Inverting ...

Page 7

Hot-Swappable, 21-Bit, DC-Balanced LVDS Table 1. Part Equivalent Table PART EQUIVALENT WITH DCB/NC = HIGH OR OPEN MAX9234 MAX9236 MAX9238 Detailed Description The MAX9234/MAX9236 operate at a parallel clock fre- quency of 8MHz to 34MHz. The MAX9238 operates at a ...

Page 8

Hot-Swappable, 21-Bit, DC-Balanced LVDS Deserializers RxOUT_ OR RxCLK OUT 8pF Figure 3. Output Load and Transition Times IDEAL SERIAL BIT TIME RSKM RSKM IDEAL MIN MAX INTERNAL STROBE Figure 4. LVDS Receiver Input Skew Margin RCIP RxCLK OUT 2.0V 2.0V ...

Page 9

Hot-Swappable, 21-Bit, DC-Balanced LVDS PWRDWN 0.8V RxCLK IN RxOUT_ RxCLK OUT Figure 8. Power-Down Delay MAX9234/MAX9236/MAX9238 vs. MAX9210/MAX9220/MAX9222 The MAX9234/MAX9236/MAX9238 operate in DC-bal- ance mode only. Pinouts are the same as the MAX9210/MAX9220/MAX9222 except that pin 6 on the MAX9234/MAX9236/MAX9238 ...

Page 10

Hot-Swappable, 21-Bit, DC-Balanced LVDS Deserializers MAX9209 MAX9211 MAX9213 MAX9215 2):1 7 TxIN (7 + 2): 2):1 PWRDWN PLL TxCLK IN 21:3 SERIALIZER Figure 10. Two Capacitors per Link, AC-Coupled MAX9209 MAX9211 MAX9213 MAX9215 7 ...

Page 11

Hot-Swappable, 21-Bit, DC-Balanced LVDS In the following example, the capacitor value for a droop calculated. Jitter due to this droop is then calculated assuming a 1ns transition time DSV) / ...

Page 12

Hot-Swappable, 21-Bit, DC-Balanced LVDS Deserializers Keep the LVTTL/LVCMOS outputs and LVDS input sig- nals separated to prevent crosstalk. A four-layer PC board with separate layers for power, ground, LVDS inputs, and digital signals is recommended. The MAX9234/MAX9236/MAX9238 ESD tolerance is ...

Page 13

Hot-Swappable, 21-Bit, DC-Balanced LVDS where 0. (data outputs output (14pF x 1.9V x 0.5 x 34MHz x 21) + (14pF x 1. 34MHz). I ...

Page 14

Hot-Swappable, 21-Bit, DC-Balanced LVDS Deserializers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) N MARKING AAA TOP VIEW b A1 ...

Page 15

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15 © 2007 Maxim Integrated Products ...

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