ISL3333EVAL1Z Intersil, ISL3333EVAL1Z Datasheet

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ISL3333EVAL1Z

Manufacturer Part Number
ISL3333EVAL1Z
Description
EVAL BOARD 1 FOR ISL3333
Manufacturer
Intersil
Datasheets

Specifications of ISL3333EVAL1Z

Lead Free Status / RoHS Status
Lead free / RoHS Compliant
3.3V, ±15kV ESD Protected, Two Port, Dual
Protocol (RS-232/RS-485) Transceivers
The ISL3332, ISL3333 are two port interface ICs where each
port can be independently configured as a single
RS-485/422 transceiver, or as a dual (2 Tx, 2 Rx) RS-232
transceiver. With both ports set to the same mode, two
RS-485/RS-422 transceivers, or four RS-232 transceivers
are available.
If either port is in RS-232 mode, the onboard charge pump
generates RS-232 compliant ±5V Tx output levels from a
single V
RS-232 compliant, with the Rx inputs handling up to ±25V.
In RS-485 mode, the transceivers support both the RS-485
and RS-422 differential communication standards. The
receivers feature "full failsafe" operation, so the Rx outputs
remain in a high state if the inputs are open or shorted
together. The transmitters support up to three data rates, two
of which are slew rate limited for problem free
communications. The charge pump disables when both
ports are in RS-485 mode, thereby saving power, minimizing
noise, and eliminating the charge pump capacitors.
Both RS-232 and RS-485 modes feature loopback and
shutdown functions. Loopback internally connects the Tx
outputs to the corresponding Rx input, to facilitate board
level self test implementation. The outputs remain connected
to the loads during loopback, so connection problems (e.g.,
shorted connectors or cables) can be detected. Shutdown
mode disables the Tx and Rx outputs, disables the charge
pumps, and places the IC in a low current (35µA) mode.
The ISL3333 is a QFN packaged device that includes two
additional user selectable, lower speed and edge rate
options for EMI sensitive designs, or to allow longer bus
lengths. It also features a logic supply pin (V
V
inputs, to be compatible with another supply voltage in mixed
voltage systems. The QFN also adds RS-232 mode Tx EN
pins (DEN), and active low Rx enable pins (RXEN) to
increase design flexibility. In RS-485 applications, active low
Rx enable pins allow Tx/Rx direction control, via a single
signal per port, by connecting the corresponding DE and
RXEN pins together.
For a single port version of these devices, please see the
ISL3330, ISL3331 data sheet.
PART NUMBER
ISL3332
ISL3333
OH
level of logic outputs, and the switching points of logic
CC
supply as low as 3.15V. The transceivers are
NO. OF
PORTS PACKAGE OPTIONS
2
2
28 Ld SSOP
40 Ld QFN (6 x 6mm) 20M, 460k, 115k
¬
1
Data Sheet
L
) that sets the
TABLE 1. SUMMARY OF FEATURES
RS-485 DATA
RATE (bps)
20M
1-888-INTERSIL or 1-888-468-3774
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
RS-232 DATA
RATE (kbps)
400
400
Features
• ±15kV (HBM) ESD Protected Bus Pins (RS-232 or
• Operates From a Single 3.3V Supply
• Two Independent Ports, Each User Selectable for RS-232
• True Flow-Through Pinouts Simplify Board Layouts
• Pb-free (RoHS compliant)
• Full Failsafe (Open/Short) Rx in RS-485/422 Mode
• Loopback Mode Facilitates Board Self Test Functions
• User Selectable RS-485 Data Rates (ISL3333 Only)
• Fast RS-232 Data Rate . . . . . . . . . . . . . . . Up to 400kbps
• RS-232 Tx and Rx Enable Pins (ISL3333 Only)
• Small Charge Pump Caps . . . . . . . . . . . . . . . . . 4 x 0.1µF
• Low Current Shutdown Mode. . . . . . . . . . . . . . . . . . .35µA
• QFN Package Saves Board Space (ISL3333 Only)
• Logic Supply Pin (V
Applications
• Gaming Applications (e.g., Slot Machines)
• Single Board Computers
• Factory Automation
• Security Networks
• Industrial/Process Control Networks
• Level Translators (e.g., RS-232 to RS-422)
• Point of Sale Equipment
• Dual Channel RS-485 Interfaces
RS-485)
(2 Transceivers) or RS-485/RS-422 (1 Transceiver)
- Fast Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Mbps
- Slew Rate Limited. . . . . . . . . . . . . . . . . . . . . . . 460kbps
- Slew Rate Limited. . . . . . . . . . . . . . . . . . . . . . . 115kbps
Systems (ISL3333 Only)
All other trademarks mentioned are the property of their respective owners.
V
May 27, 2008
L
YES
|
NO
PIN?
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2008. All Rights Reserved.
RS-232 Tx
ENABLE?
YES
L
NO
) Eases Operation in Mixed Supply
ISL3332, ISL3333
ACTIVE H or L
Rx ENABLE?
NONE
L
SHUTDOWN?
LOW POWER
FN6362.0
YES
YES

Related parts for ISL3333EVAL1Z

ISL3333EVAL1Z Summary of contents

Page 1

... NO 400 YES CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. | 1-888-INTERSIL or 1-888-468-3774 Intersil (and design registered trademark of Intersil Americas Inc. All other trademarks mentioned are the property of their respective owners. ISL3332, ISL3333 FN6362.0 ) Eases Operation in Mixed Supply L RS-232 Tx ...

Page 2

... NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. ...

Page 3

INPUTS SEL1 or 2 ON/OFF N. NOTE: 1. Charge pumps are off if SEL1 = SEL2 = ON/OFF = ...

Page 4

INPUTS SEL1 or 2 ON/OFF SPA SPB ...

Page 5

Pin Descriptions PIN MODE GND BOTH Ground connection. LB BOTH Enables loopback mode when low. Internally pulled-high. NC BOTH No Connection. ON/OFF BOTH If either port is in RS-232 mode, a low on ON/OFF disables the charge pumps. In either ...

Page 6

Typical Operating Circuits RS-232 MODE WITHOUT LOOPBACK +3.3V + 0.1μ C1 0.1µ C2+ + 0.1µ 5kΩ 5kΩ ...

Page 7

... Ld SSOP Package (Note QFN Package (Notes 4, 6 Maximum Junction Temperature (Plastic Package +150°C Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp + 0.5V 0.5V) L Operating Conditions Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C = 3.15V to 3.45V 0.1µ ...

Page 8

Electrical Specifications Test Conditions: V Typicals are at V PARAMETER SYMBOL Input Low Voltage Input Current I IN1 I IN2 DC CHARACTERISTICS - RS-485 RECEIVER INPUTS (SEL = V Receiver Differential Threshold V Voltage ...

Page 9

Electrical Specifications Test Conditions: V Typicals are at V PARAMETER SYMBOL RS-232 DRIVER AND RECEIVER SWITCHING CHARACTERISTICS (SEL = GND, ALL VERSIONS AND SPEEDS) Driver Output Transition Region SR Slew Rate Driver Output Transition Time t r Driver Propagation Delay ...

Page 10

Electrical Specifications Test Conditions: V Typicals are at V PARAMETER SYMBOL Driver Enable to Output High t ZH Driver Disable from Output Low t LZ Driver Disable from Output High t HZ Driver Enable from Shutdown to t ZL(SHDN) Output ...

Page 11

Test Circuits and Waveforms SIGNAL GENERATOR FIGURE 2A. TEST CIRCUIT FIGURE 2. RS-485 DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES 11 ISL3332, ISL3333 ...

Page 12

Test Circuits and Waveforms SIGNAL Z GENERATOR C L FOR SHDN TESTS, SWITCH ON/OFF RATHER THAN DE PARAMETER ON/DE OUTPUT DY t 1/- Y/Z 0 1/- Y/Z 1 1/- Y/Z 0/1 ZH ...

Page 13

Test Circuits and Waveforms DEN (QFN ONLY Y SIGNAL GENERATOR FIGURE 6A. TEST CIRCUIT FIGURE 6. RS-232 DRIVER PROPAGATION DELAY AND TRANSITION TIMES RXEN (QFN ONLY SIGNAL ...

Page 14

Typical Application RS-232 to RS-485 Converter The ISL3332, ISL3333 are ideal for implementing a single IC 2-wire (Tx Data, Rx Data) protocol converter, because each port can be programmed for a different protocol. Figure 8 illustrates the simple connections to ...

Page 15

ISL333X (MASTER) 1kΩ GND . ISL333x Advantages These dual protocol ICs offer many parametric improvements vs those offered on competing dual protocol devices. Some of the ...

Page 16

RS-232 mode I is reduced significantly. Unlike competing devices CC that require the charge pump in RS-485 mode, disabling the charge pump saves power, and minimizes noise. If the application keeps both ports ...

Page 17

Higher data rates require faster edges, so both the ISL333X versions offer an edge rate capable of 20Mbps data rates. The ISL3333 also offers two slew rate limited edge ...

Page 18

All but 10uA of SHDN supply current (I control input (ON, LB, SP, DE, DEN) pull-up resistors (~11μA/resistor), so SHDN supply current varies depending on the ISL333X configuration. The spec tables indicate the SHDN currents for configurations that optimize these ...

Page 19

... Table 3), and the selection pertains to each port programmed for RS-485 mode. Evaluation Board An evaluation board, part number ISL3333EVAL1Z, is available to assist in assessing the dual protocol IC’s performance. The evaluation board contains a QFN packaged device, but because the same die is used in all packages, the board is also useful for evaluating the functionality of the other versions. The board’ ...

Page 20

Typical Performance Curves +25 ° +85 ° 5 RECEIVER OUTPUT VOLTAGE (V) FIGURE 14. RECEIVER OUTPUT CURRENT vs RECEIVER OUTPUT VOLTAGE ...

Page 21

Typical Performance Curves 60 NO LOAD GND RXEN = GND RS-232, DEN = 1.5 2.0 2.5 V ...

Page 22

Typical Performance Curves 54Ω 100pF DIFF DLH -40 - TEMPERATURE (°C) FIGURE 26. RS-485, DRIVER PROPAGATION DELAY vs TEMPERATURE (FAST DATA RATE) ...

Page 23

Typical Performance Curves R DIFF TIME (10ns/DIV) FIGURE 32. RS-485, DRIVER AND RECEIVER WAVEFORMS, LOW TO HIGH (FAST DATA RATE) 7 5.0 OUT 2.5 ALL T ...

Page 24

Typical Performance Curves C = 1000pF, 2 CHANNELS SWITCHING Y 2µs/DIV. FIGURE 38. RS-232, TRANSMITTER AND RECEIVER WAVEFORMS AT 400kbps 550 ≥ ±4V AND DUTY CYCLE BETWEEN 40% AND 60% ...

Page 25

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

Page 26

Package Outline Drawing L40.6x6 40 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 3, 10/06 6.00 6 PIN 1 INDEX AREA (4X) 0.15 TOP VIEW ( TYP ) ( TYPICAL RECOMMENDED LAND PATTERN 26 ...

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