ISL3333EVAL1Z Intersil, ISL3333EVAL1Z Datasheet

ISL3333EVAL1Z

Manufacturer Part Number

ISL3333EVAL1Z

Description

EVAL BOARD 1 FOR ISL3333

Manufacturer

Intersil

Datasheets

1.ISL3333IRZ.pdf (26 pages)

2.ISL3333EVAL1Z.pdf (9 pages)

Specifications of ISL3333EVAL1Z

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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Description

The ISL3333EVAL1Z evaluation board is RoHS compliant,

and provides a quick and easy method for evaluating this

two-port Dual Protocol IC. The evaluation board also

accommodates the ISL3331; see the “ISL3331EVAL1Z

User’s Manual” for details.

This board was designed to allow the user to evaluate all the

features available on the ISL3332 and ISL3333 products.

The ISL3333 is the full featured version (see “Key Features”

in next section), where the QFN package’s increased pin

count gives the user access to functionality not available on

the pin limited ISL3332. The same die is used in both

products, so other than minor package effects, evaluating

the QFN packaged ISL3333 is a reasonable substitute for

evaluating the ISL3332.

By changing jumper positions the user can quickly set the

board to evaluate any of the ISL3333’s many modes and

features, and the input states can also be set via jumpers.

Refer to the ISL3333 data sheet for complete details

regarding the functions and features of this device. These

dual protocol ICs feature many modes. However, studying

the device’s truth table along with its operating circuits and

detailed description is the best way to gain an understanding

of how the part works.

Key Features

• QFN Version Demonstrates All Enhanced Features:

• Quick Configuration Using Jumpers

• State of All Inputs Can be Set by Jumper Positions

• No Bus Termination Resistors on Port 1 Allows Easy

• Simple Operation Requires Only One, 3.3V Power Supply

Important Notes

To facilitate locating jumpers on this board, Figure 3 is a

jumper locator and, in this Application Note, the

a jumper mention corresponds to the red jumper number on

the locator. See “Jumper Definitions” on page 7 for a

description of the function of each jumper.

- Logic Supply Pin (V

- Three RS-485 Speed Options -

- Active Low RS-485 Rx Enable for Simple Direction

- Active Low RS-232 Tx Disable Function

RS-232 Evaluation; Bus Termination Resistors on Port 2

for RS-485 Evaluation

115kbps/460kbps/20Mbps

Control

)

Application Note

(#)

following

1-888-INTERSIL or 1-888-468-3774

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

ISL3333EVAL1Z User’s Manual

The base board is used to evaluate both the ISL3333 (2-port)

and ISL3331 (1-port) products, so the jumper and connector

names reflect the functionality of both products. Due to space

limitations some jumper labels are abbreviated, but the

corresponding BNC connector has the full label.

In most cases, a name that applies to both products contains

no parenthesis (e.g., “B1”), and a name that applies to only

the ISL3333 is followed by “(NC)” (e.g., “B2 (NC)”).

It is important to note that the ISL333x do not follow the

RS-485 convention whereby the inverting I/O is labeled

“B/Z”, and the non-inverting I/O is “A/Y”. Thus, the ISL3332

and ISL3333 A/Y (B/Z) pins connect to the B/Z (A/Y) pins of

generic RS-485/422 ICs.

Input signals that connect to a BNC connector, because they

are likely to be driven by a generator, include a 50Ω

termination resistor to GND when the jumper is in the “LOW”

position.

Port 1 includes no Rx input nor Tx output termination

resistors, as this port is intended for RS-232 evaluation.

Port 2, intended for RS-485/422 evaluation, includes 120Ω

differential termination resistors across the Rx inputs, and

across the Tx outputs.

Default Configuration

As delivered (see “Functional Diagram (Default

Configuration)” on page 2), the board is configured for Port 1

in RS-232 mode with Tx and Rx enabled, Rx inputs floating,

and Tx inputs low. Port 2 is in RS-485 mode with Tx and Rx

enabled, Tx set for high speed (20Mbps) operation, driver

input (DY) low, Rx inputs floating but shorted together

through a 120Ω termination resistor. Additionally, the

ISL3333 is powered-up (i.e., not SHDN), has internal

loopback disabled, and has V

this configuration, the jumpers (see “Jumper Definitions” on

page 7) are installed as follows (unlisted jumpers are not

installed, and

jumper locator): SEL1

(DEN)

SPB

DE2

DZ1/DE1 (DY)

VCC-VL

(22)

(17)

(19)

(28)

= VH; DY1 (DZ/SLEW)

All other trademarks mentioned are the property of their respective owners.

(26)

= VH; RXEN2

= VH; DY2

June 3, 2009

= VH; RXEN1

Intersil (and design) is a registered trademark of Intersil Americas Inc.

= installed; VL-VHIGH

(#)

(24)

indicates the jumper number on Figure 3

= LOW; RXBIAS-VCC

(20)

(7)

(18)

= LOW; ON/OFF

= LOW; SEL2

(15)

= LOW; (RXEN)

= LOW; SPA

shorted to V

(23)

= LOW;

(27)

(8)

= installed.

(25)

(21)

= VH;

(16)

(29)

. To achieve

AN1470.0

= installed;

= VH;

Related parts for ISL3333EVAL1Z

ISL3333EVAL1Z Summary of contents

Page 1

... Application Note Description The ISL3333EVAL1Z evaluation board is RoHS compliant, and provides a quick and easy method for evaluating this two-port Dual Protocol IC. The evaluation board also accommodates the ISL3331; see the “ISL3331EVAL1Z User’s Manual” for details. This board was designed to allow the user to evaluate all the features available on the ISL3332 and ISL3333 products. The ISL3333 is the full featured version (see “ ...

Page 2

Functional Diagram (Default Configuration) (26) +3.3V + 0.1µ C1 0.1µ C2+ + 0.1µ C2 5kΩ RXEN1 17 ...

Page 3

Rx is also failsafe “shorted”. Failsafe “open” is best demonstrated using Port 1. Simply move the “SEL1” (7) jumper to the VH position to place Port 1 in RS-485 mode (note that I CC “DE2” ...

Page 4

Tx speed setting. Table 1 details the jumper settings for each of the speed options. TABLE 1. JMPR SETTINGS FOR Tx SPEED SELECTION (16) DATA RATE J-SPA 115kbps “LOW” 460kbps “LOW” ...

Page 5

The Tx outputs are disabled in SHDN driving DEN1(DEN) low (move jumper (DEN) position). Remove the “external loopback” jumpers when finished, and switch the “DY1 (DZ/SLEW)” and “DZ1/DE1 (DY)” jumpers back to the “LOW” positions, and the (DEN) ...

Page 6

If the logic device is also powered by 3.3V, then the V shorted to the V pin evaluate the V pin performance, remove the “VCC-VL” L (26) jumper, and connect a ...

Page 7

... Rx; “VH” disables Rx. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that the Application Note or Technical Brief is current before proceeding. For information regarding Intersil Corporation and its products, see www.intersil.com ...

Page 8

... Application Note 1470 FIGURE 2. QFN LAND PATTERN AND DIMENSIONS (in mm FIGURE 3. JUMPER LOCATOR DIAGRAM ISL3333EVAL1Z AN1470.0 June 3, 2009 ...

Page 9

RXBIAS B1 J9 TP1 TP6 J- TP5 C4 TP2 Z1 C2 VLOAD VHIGH R7 R6 J-SEL1 R10 R13 VHIGH R11 RXBIAS 10 J11 J-SEL2 R14 VLOAD A2/Y2_LB RXBIAS J4 C6 J12 TP7 Z2 ...

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