ISL81487EIP Intersil, ISL81487EIP Datasheet

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ISL81487EIP

Manufacturer Part Number
ISL81487EIP
Description
IC TXRX RS-485/422 ESD 8-DIP
Manufacturer
Intersil
Type
Transceiverr
Datasheet

Specifications of ISL81487EIP

Number Of Drivers/receivers
1/1
Protocol
RS422, RS485
Voltage - Supply
4.5 V ~ 5.5 V
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ISL81487EIP
Manufacturer:
Intersil
Quantity:
95
Part Number:
ISL81487EIPE
Manufacturer:
INTERSIL
Quantity:
20 000
Part Number:
ISL81487EIPZ
Manufacturer:
INTERSIL
Quantity:
20 000
±
Low Power, High Speed or Slew Rate
Limited, RS-485/RS-422 Transceivers
These Intersil RS-485/RS-422 devices are ESD protected,
fractional unit load (UL), BiCMOS, 5V powered, single
transceivers that meet both the RS-485 and RS-422
standards for balanced communication. Each driver output/
receiver input is protected against ±15kV ESD strikes,
without latch-up. Unlike competitive devices, this Intersil
family is specified for 10% tolerance supplies (4.5V to 5.5V).
All devices present a 1/8 “unit load” to the RS-485 bus,
which allows up to 256 transceivers on the network for large
node count systems (e.g., process automation, remote
meter reading systems). In a remote utility meter reading
system, individual (apartments for example) utility meter
readings are routed to a concentrator via an RS-485
network, so the high allowed node count minimizes the
number of repeaters required to network all the meters. Data
for all meters is then read out from the concentrator via a
single access port, or a wireless link.
Slew rate limited drivers on the ISL8487E and ISL81487L
reduce EMI, and minimize reflections from improperly
terminated transmission lines, or unterminated stubs in
multidrop and multipoint applications. Data rates up to
250kbps are achievable with these devices.
Data rates up to 5Mbps are achievable by using the
ISL81487E, which features higher slew rates.
Receiver (Rx) inputs feature a “fail-safe if open” design,
which ensures a logic high Rx output if Rx inputs are floating.
Driver (Tx) outputs are short circuit protected, even for
voltages exceeding the power supply voltage. Additionally,
on-chip thermal shutdown circuitry disables the Tx outputs to
prevent damage if power dissipation becomes excessive.
These half duplex devices multiplex the Rx inputs and Tx
outputs to allow transceivers with Rx and Tx disable
functions in 8 lead packages.
ISL81487E
ISL81487L
NUMBER
ISL8487E
15kV ESD Protected, 1/8 Unit Load, 5V,
PART
HALF/FULL
DUPLEX
Half
Half
Half
ALLOWED ON BUS
®
NO. OF DEVICES
1
256
256
256
Data Sheet
DATA RATE
TABLE 1. SUMMARY OF FEATURES
(Mbps)
0.25
0.25
5
1-888-INTERSIL or 1-888-468-3774
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
SLEW-RATE
LIMITED?
Yes
Yes
No
ISL8487E, ISL81487L, ISL81487E
Features
• RS-485 I/O Pin ESD Protection . . . . . . . . . . ±15kV HBM
• Fractional Unit Load Allows up to 256 Devices on the Bus
• Specified for 10% Tolerance Supplies
• High Data Rate Version (ISL81487E) . . . . . up to 5Mbps
• Slew Rate Limited Versions for Error Free Data
• Low Current Shutdown Mode (Except ISL81487E). . . 0.5
• Low Quiescent Supply Current:
• -7V to +12V Common Mode Input Voltage Range
• Three State Rx and Tx Outputs
• 30ns Propagation Delays, 5ns Skew (ISL81487E)
• Half Duplex Pinouts
• Operate from a Single +5V Supply (10% Tolerance)
• Current Limiting and Thermal Shutdown for Driver
• Pin Compatible Replacements for: MAX487E, (ISL8487E);
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• High Node Count Networks
• Automated Utility Meter Reading Systems
• Factory Automation
• Security Networks
• Building Environmental Control Systems
• Industrial/Process Control Networks
- Class 3 ESD Level on all Other Pins . . . . . . >7kV HBM
Transmission (ISL8487E, ISL81487L) . . . . .up to 250kbps
- ISL8487E, ISL81487L . . . . . . . . . . . . . . . 145
- ISL81487E . . . . . . . . . . . . . . . . . . . . . . . . 420
Overload Protection
LTC1487, ADM1487 (ISL81487L); MAX1487E, ST485ER
(ISL81487E)
February 27, 2006
DRIVER ENABLE?
RECEIVER/
All other trademarks mentioned are the property of their respective owners.
|
Yes
Yes
Yes
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2003-2006. All Rights Reserved
QUIESCENT
I
CC
120
120
350
(µA)
SHUTDOWN?
LOW POWER
Yes
Yes
No
FN6051.7
µ
µ
A (Max.)
A (Max.)
COUNT
PIN
8
8
8
µ
A

Related parts for ISL81487EIP

ISL81487EIP Summary of contents

Page 1

... 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. Copyright © Intersil Americas Inc. 2003-2006. All Rights Reserved All other trademarks mentioned are the property of their respective owners. FN6051.7 µ ...

Page 2

... ISL81487EIP ISL81487EIP - ISL81487EIPZ ISL81487EIPZ - (Note) *Add “-T” suffix to part number for tape and reel packaging. **Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder processing applications. NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets ...

Page 3

Pin Descriptions PIN RO Receiver output > least 0.2V high < 0.2V or more low High if A and B are unconnected (floating). RE Receiver ...

Page 4

Absolute Maximum Ratings V to Ground ...

Page 5

Electrical Specifications Test Conditions: V Typicals are at V PARAMETER SYMBOL No-Load Supply Current, (Note 3) I Shutdown Supply Current I SHDN Driver Short-Circuit Current, I OSD1 V = High or Low O Receiver Short-Circuit Current I OSR SWITCHING CHARACTERISTICS ...

Page 6

Electrical Specifications Test Conditions: V Typicals are at V PARAMETER SYMBOL Receiver Enable from Shutdown to t ZH(SHDN) Output High Receiver Enable from Shutdown to t ZL(SHDN) Output Low SWITCHING CHARACTERISTICS (ISL81487L) Driver Input to Output Delay t PLH Driver ...

Page 7

Test Circuits and Waveforms SIGNAL GENERATOR FIGURE 2A. TEST CIRCUIT FIGURE 2. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES SIGNAL Y GENERATOR C L (SHDN) for ISL8487E and ...

Page 8

Test Circuits and Waveforms RE B +1. SIGNAL GENERATOR FIGURE 4A. TEST CIRCUIT SIGNAL A GENERATOR (SHDN) for ISL8487E and ISL81487L only. PARAMETER (Note 6) ...

Page 9

All the receivers include a “fail-safe if open” function that guarantees a high level receiver output if the receiver inputs are unconnected (floating). Receivers easily meet the data rates supported by the corresponding driver, and receiver outputs are three-statable via ...

Page 10

Human Body Model Testing As the name implies, this test method emulates the ESD event delivered during human handling. The tester delivers the charge stored on a 100pF capacitor through a 1.5kΩ current limiting resistor into the ...

Page 11

Typical Performance Curves 750 700 650 600 550 500 450 -40 - TEMPERATURE (°C) FIGURE 10. DRIVER PROPAGATION DELAY vs TEMPERATURE (ISL8487E, ISL81487L PLHY 22 t PLHZ PHLY 16 -40 ...

Page 12

Typical Performance Curves R DIFF B A TIME (20ns/DIV) FIGURE 16. DRIVER AND RECEIVER WAVEFORMS, LOW TO HIGH (ISL81487E) Die Characteristics SUBSTRATE POTENTIAL (POWERED UP): GND TRANSISTOR COUNT: 518 PROCESS: Si ...

Page 13

Dual-In-Line Plastic Packages (PDIP INDEX N/2 AREA -B- -A- D BASE PLANE -C- SEATING PLANE 0.010 (0.25 NOTES: 1. Controlling Dimensions: INCH. In case of conflict between ...

Page 14

... 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 ...

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